Communicable diseases key terms

pathogens

Microorganisms that cause infectious diseases, including viruses, bacteria, protists, and fungi.

infectious disease

A disease caused by pathogens that can be transmitted from one individual to another.

pathogens

Microorganisms that cause infectious diseases, which can be classified as viruses, bacteria, protists, or fungi.

infectious diseases

In Communicable (infectious) diseases, infectious diseases refers to diseases caused by pathogens that can spread from one organism to another. This matters in Communicable diseases because it supports the learning objective to state that pathogens may be viruses, bacteria, protists or fungi. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

pathogens

In Communicable (infectious) diseases, pathogens refers to microorganisms that cause infectious diseases, which can infect both plants and animals. This matters in Communicable diseases because it supports the learning objective to explain that pathogens may infect plants or animals. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

infection

The process by which pathogens invade and multiply within a host organism, potentially causing disease.

pathogens

Microorganisms that cause infectious diseases, including viruses, bacteria, protists, and fungi.

transmission

The process by which pathogens spread from one host to another, which can occur through direct contact, water, or air.

pathogens

Microorganisms such as viruses, bacteria, protists, or fungi that cause infectious diseases.

transmission

The process by which diseases caused by pathogens are spread between animals and plants.

disease prevention

In Communicable (infectious) diseases, disease prevention refers to methods and strategies used to reduce the risk of spreading infectious diseases. This matters in Communicable diseases because it supports the learning objective to explain how the spread of diseases can be reduced or prevented. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

transmission routes

The various ways in which pathogens can spread, including direct contact, water, and air.

bacteria

In Communicable (infectious) diseases, bacteria refers to single-celled microorganisms that can reproduce rapidly and may cause infectious diseases. This matters in Communicable diseases because it supports the learning objective to explain that bacteria and viruses may reproduce rapidly inside the body. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

viruses

Microscopic pathogens that require living cells to reproduce and can cause various diseases.

toxins

In Communicable (infectious) diseases, toxins refers to substances produced by bacteria that can damage tissues and lead to illness. This matters in Communicable diseases because it supports the learning objective to explain that bacteria may produce toxins that damage tissues and make us feel ill. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

bacteria

In Communicable (infectious) diseases, bacteria refers to microorganisms that can reproduce rapidly and may produce toxins causing harm to the host. This matters in Communicable diseases because it supports the learning objective to explain that bacteria may produce toxins that damage tissues and make us feel ill. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

viruses

In Communicable (infectious) diseases, viruses refers to microorganisms that can live and reproduce inside host cells, often causing cell damage. This matters in Communicable diseases because it supports the learning objective to explain that viruses live and reproduce inside cells, causing cell damage. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

cell damage

In Communicable (infectious) diseases, cell damage refers to harm caused to cells as a result of viral reproduction, which can lead to illness. This matters in Communicable diseases because it supports the learning objective to explain that viruses live and reproduce inside cells, causing cell damage. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

measles

In Viral diseases, measles refers to a viral disease characterized by fever and a red skin rash. This matters in Communicable diseases because it supports the learning objective to describe measles as a viral disease that causes fever and a red skin rash. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

viral disease

An illness caused by viruses, which can lead to various symptoms and health complications.

measles

A viral disease characterized by fever and a red skin rash, which can lead to serious complications.

complications

Additional health problems that can arise from an illness, potentially making it more severe or fatal.

vaccination

A medical process that involves administering a vaccine to stimulate the immune system and provide protection against specific diseases.

measles

A highly contagious viral disease characterized by symptoms such as fever and a red skin rash, which can lead to serious complications.

measles virus

In Viral diseases, measles virus refers to a viral infection that is spread by inhalation of droplets from coughs and sneezes. This matters in Communicable diseases because it supports the learning objective to explain that the measles virus is spread by inhalation of droplets from coughs and sneezes. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

inhalation

The process of breathing in air that may contain infectious droplets, facilitating the spread of viruses like measles.

HIV

In Viral diseases, HIV refers to a viral disease that initially causes flu-like symptoms and attacks the body's immune cells. This matters in Communicable diseases because it supports the learning objective to describe HIV as a viral disease that initially causes a flu-like illness. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

flu-like illness

In Viral diseases, flu-like illness refers to initial symptoms associated with HIV, resembling those of the common flu. This matters in Communicable diseases because it supports the learning objective to describe HIV as a viral disease that initially causes a flu-like illness. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

HIV

A viral disease that attacks the body's immune cells and can lead to late-stage infection or AIDS if not controlled.

immune cells

Cells in the body that are part of the immune system and help to fight infections, which are targeted by HIV.

HIV transmission

The process by which the HIV virus is spread through sexual contact or the exchange of body fluids.

body fluids

Fluids such as blood, semen, and vaginal secretions that can carry the HIV virus and facilitate its transmission.

tobacco mosaic virus

A widespread plant pathogen that affects many species, including tomatoes, causing a mosaic pattern of leaf discolouration.

plant pathogen

An organism, such as a virus or bacteria, that causes disease in plants, leading to reduced growth and yield.

tobacco mosaic virus

A widespread plant pathogen that causes a mosaic pattern of leaf discolouration, reducing photosynthesis and plant growth.

photosynthesis reduction

The decrease in the process by which plants convert light energy into chemical energy, often due to diseases like tobacco mosaic virus.

salmonella food poisoning

A bacterial infection caused by the ingestion of salmonella bacteria found in contaminated food or prepared in unhygienic conditions.

spread

The process by which salmonella bacteria are transmitted through contaminated food or poor hygiene practices.

vaccination

A method of preventing disease by introducing a vaccine to stimulate the immune response.

salmonella

A type of bacteria that causes food poisoning and is spread through contaminated food or unhygienic conditions.

salmonella symptoms

Symptoms caused by salmonella infection, including fever, abdominal cramps, vomiting, and diarrhoea.

food poisoning

Illness caused by consuming food contaminated with salmonella bacteria, leading to various gastrointestinal symptoms.

salmonella

A type of bacteria that causes food poisoning, leading to symptoms such as fever, abdominal cramps, vomiting, and diarrhoea.

toxins

Poisonous substances produced by bacteria, including salmonella, that contribute to the symptoms of infection.

gonorrhoea

A sexually transmitted bacterial disease characterized by pain during urination and a thick yellow or green discharge.

bacterial disease

An illness caused by bacteria, which can be transmitted through various means, including sexual contact.

gonorrhoea

A sexually transmitted bacterial disease characterized by symptoms such as pain during urination and a thick discharge.

antibiotic resistance

The ability of bacteria, such as those causing gonorrhoea, to survive and multiply despite the presence of antibiotics like penicillin.

gonorrhoea

In Bacterial diseases, gonorrhoea refers to a sexually transmitted bacterial infection that is spread through sexual contact. This matters in Communicable diseases because it supports the learning objective to explain that gonorrhoea is spread by sexual contact. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

sexual contact

The act of engaging in sexual activity, which is a primary mode of transmission for gonorrhoea.

gonorrhoea

In Bacterial diseases, gonorrhoea refers to a sexually transmitted bacterial infection that can be spread through sexual contact. This matters in Communicable diseases because it supports the learning objective to explain that the spread of gonorrhoea can be controlled by treatment with antibiotics or the use of barrier contraception such as condoms. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

antibiotics

Medications used to treat bacterial infections, including gonorrhoea, by killing or inhibiting the growth of bacteria.

rose black spot

A fungal disease affecting plants, characterized by purple or black spots on leaves.

fungal disease

In Fungal diseases, fungal disease refers to a disease caused by fungi, which can affect various organisms, including plants. This matters in Communicable diseases because it supports the learning objective to identify rose black spot as a fungal disease of plants. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

rose black spot

In Fungal diseases, rose black spot refers to a fungal disease that causes purple or black spots on the leaves of plants. This matters in Communicable diseases because it supports the learning objective to describe rose black spot as causing purple or black spots on leaves. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

leaf infection

The condition where leaves are affected by diseases such as rose black spot, leading to discoloration and potential early leaf drop.

infected leaves

Leaves that have been affected by a disease, leading to changes in color and health.

yellowing

In Fungal diseases, yellowing refers to the process where leaves change color to yellow, often indicating stress or disease. This matters in Communicable diseases because it supports the learning objective to explain that infected leaves often turn yellow and fall early. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

rose black spot

A fungal disease that causes purple or black spots on the leaves of plants, reducing photosynthesis and affecting plant growth.

photosynthesis reduction

The decrease in the process by which plants convert light energy into chemical energy, often due to diseases like rose black spot.

rose black spot

A fungal disease affecting plants, characterized by purple or black spots on leaves.

fungicides

Chemical substances used to kill or inhibit the growth of fungi, often used to treat diseases like rose black spot.

malaria

In Protist diseases, malaria refers to a disease caused by protists that leads to recurrent episodes of fever and can be fatal. This matters in Communicable diseases because it supports the learning objective to state that the pathogens that cause malaria are protists. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

protist

A type of microorganism that includes the pathogens responsible for diseases such as malaria.

malarial protist

A type of protist that causes malaria and has a complex life cycle involving mosquitoes.

mosquito life cycle

The developmental stages of mosquitoes, which are essential for the transmission of the malarial protist.

malaria

In Protist diseases, malaria refers to a disease caused by protists that leads to recurrent episodes of fever. This matters in Communicable diseases because it supports the learning objective to describe malaria as causing recurrent episodes of fever. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

recurrent episodes

In Protist diseases, recurrent episodes refers to repeated occurrences of symptoms, such as fever, associated with malaria. This matters in Communicable diseases because it supports the learning objective to describe malaria as causing recurrent episodes of fever. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

malaria

A serious disease caused by protists, characterized by recurrent episodes of fever and can be fatal.

fatal

In Protist diseases, fatal refers to describes a condition or disease that can lead to death, as seen in severe cases of malaria. This matters in Communicable diseases because it supports the learning objective to explain that malaria can be fatal. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

malaria control

Methods used to manage malaria transmission, including preventing mosquito breeding and using mosquito nets.

mosquito breeding prevention

Strategies implemented to reduce the reproduction of mosquitoes, thereby decreasing the risk of malaria spread.

skin

The outer protective layer of the body that acts as a non-specific defence system against pathogens.

non-specific defence

A type of immune response that provides immediate protection against a wide range of pathogens without targeting specific ones.

non-specific defence system

A mechanism that provides general protection against pathogens without targeting specific invaders.

nose

In Human defence systems, nose refers to an organ that filters and traps pathogens in mucus, serving as a barrier to infection. This matters in Communicable diseases because it supports the learning objective to describe the nose as a non-specific defence system against pathogens. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

trachea

The trachea is a tube that connects the throat to the lungs, serving as a passage for air and a non-specific defence system against pathogens.

bronchi

The bronchi are the two main branches of the trachea that lead into the lungs, acting as non-specific defence systems by trapping and expelling pathogens.

stomach

An organ that acts as a non-specific defence system against pathogens by producing acid to kill harmful microorganisms.

non-specific defence

A type of immune response that provides immediate protection against a wide range of pathogens without targeting specific ones.

immune system

In Human defence systems, immune system refers to the complex network of cells and proteins that defends the body against pathogens. This matters in Communicable diseases because it supports the learning objective to explain the role of the immune system in the defence against disease. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

defence mechanisms

The processes and structures, such as white blood cells and antibodies, that protect the body from disease-causing organisms.

pathogen

In Human defence systems, pathogen refers to an organism that causes disease, such as bacteria, viruses, fungi, or parasites. This matters in Communicable diseases because it supports the learning objective to explain that if a pathogen enters the body the immune system tries to destroy it. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

immune system

In Human defence systems, immune system refers to the body's defense system that identifies and destroys pathogens that enter the body. This matters in Communicable diseases because it supports the learning objective to explain that if a pathogen enters the body the immune system tries to destroy it. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

phagocytosis

The process by which white blood cells engulf and digest pathogens to defend the body against infection.

white blood cells

Cells in the immune system that play a crucial role in defending the body against pathogens, including through mechanisms like phagocytosis.

antibodies

Proteins produced by white blood cells that specifically target and neutralize pathogens.

white blood cells

Cells in the immune system that help defend the body against infections and diseases by identifying and destroying pathogens.

antitoxins

In Human defence systems, antitoxins refers to substances produced by white blood cells that neutralize toxins released by pathogens. This matters in Communicable diseases because it supports the learning objective to explain how white blood cells defend against pathogens by producing antitoxins. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

white blood cells

Cells in the immune system that help defend the body against infections and pathogens.

vaccination

A process that introduces small quantities of dead or inactive pathogens into the body to stimulate an immune response and prevent illness.

immune response

The reaction of the immune system to pathogens, which includes the production of antibodies and activation of white blood cells to defend against disease.

herd immunity

A form of indirect protection from infectious disease that occurs when a large percentage of a population becomes immune to the infection, thereby reducing its spread.

pathogen spread reduction

The decrease in the transmission of infectious agents within a population, often achieved through vaccination and other public health measures.

vaccination

The process of introducing small quantities of dead or inactive pathogens into the body to stimulate an immune response.

pathogen

In Vaccination, pathogen refers to an organism, such as a bacterium or virus, that can cause disease in a host. This matters in Communicable diseases because it supports the learning objective to explain that vaccination introduces small quantities of dead or inactive pathogen into the body. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

vaccination

A process that stimulates the immune system to produce antibodies against specific pathogens, allowing for a quicker response upon re-exposure.

antibodies

Proteins produced by white blood cells that identify and neutralize pathogens such as bacteria and viruses.

vaccination

A process that stimulates the immune system to produce antibodies against specific pathogens, enhancing the body's ability to respond to future infections.

global vaccination strategies

Comprehensive plans implemented worldwide to increase vaccination coverage and prevent the spread of communicable diseases.

antibiotics

Medicines used to treat bacterial infections by killing or inhibiting the growth of bacteria.

painkillers

Medicines that alleviate symptoms of disease without targeting the underlying pathogens.

antibiotics

Medicines that help to cure bacterial diseases by killing infective bacteria inside the body.

penicillin

A specific type of antibiotic that is effective in treating bacterial infections by targeting and destroying bacteria.

specific antibiotics

Antibiotics that are effective against particular types of bacteria, ensuring targeted treatment.

bacterial infection

An infection caused by bacteria that can be treated with antibiotics, depending on the specific strain.

antibiotics

Medicines that help to cure bacterial infections by killing or inhibiting the growth of bacteria.

infectious bacterial diseases

Diseases caused by bacteria that can be transmitted from one individual to another, which antibiotics can effectively treat.

antibiotic resistance

The ability of bacteria to survive and grow in the presence of antibiotics that would normally kill them or inhibit their growth.

major concern

A significant issue that poses a threat to public health, particularly in relation to the effectiveness of antibiotics in treating bacterial infections.

antibiotics

Medicines that are used to treat bacterial infections by killing or inhibiting the growth of bacteria.

viral pathogens

Microorganisms that cause disease and infections but cannot be treated with antibiotics.

painkillers

Medicines that alleviate symptoms of disease without eliminating the pathogens causing the illness.

symptoms

Physical or mental features that indicate a condition or disease, which painkillers aim to relieve.

drug development

The process of creating new medications, which involves stages such as discovery, preclinical testing, and clinical trials.

viral pathogens

Microorganisms that cause disease and are specifically targeted by antiviral drugs, which are challenging to develop without harming healthy cells.

preclinical testing

The stage in drug development where new medicines are tested on cells and animals to assess safety and efficacy before human trials.

clinical testing

The phase of drug development that involves testing new medicines on human participants to evaluate their safety, effectiveness, and optimal dosing.

traditional drugs

Medicines that are derived from natural sources such as plants and microorganisms.

extraction

In Discovery and development of drugs, extraction refers to the process of obtaining substances from natural sources for use in drug development. This matters in Communicable diseases because it supports the learning objective to explain that traditional drugs were extracted from plants and microorganisms. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

digitalis

In Discovery and development of drugs, digitalis refers to in Discovery and development of drugs, digitalis refers to a heart drug that originates from the foxglove plant. This matters in Communicable diseases because it supports the learning objective to recall that the heart drug digitalis originates from foxgloves. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions. This matters in Communicable diseases because it supports the learning objective to recall that the heart drug digitalis originates from foxgloves. In exam questions, treat digitalis as the named drug or product students must remember, and link it back to its natural source correctly.

foxgloves

In Discovery and development of drugs, foxgloves refers to in Discovery and development of drugs, foxgloves refers to plants from which the heart drug digitalis is derived. This matters in Communicable diseases because it supports the learning objective to recall that the heart drug digitalis originates from foxgloves. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions. This matters in Communicable diseases because it supports the learning objective to recall that the heart drug digitalis originates from foxgloves. In exam questions, treat foxgloves as the natural source or organism students must remember, rather than the drug that comes from it.

aspirin

In Discovery and development of drugs, aspirin refers to in Discovery and development of drugs, aspirin refers to a painkiller that originates from the willow tree. This matters in Communicable diseases because it supports the learning objective to recall that the painkiller aspirin originates from willow. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions. This matters in Communicable diseases because it supports the learning objective to recall that the painkiller aspirin originates from willow. In exam questions, treat aspirin as the named drug or product students must remember, and link it back to its natural source correctly.

willow

In Discovery and development of drugs, willow refers to in Discovery and development of drugs, willow refers to a type of tree from which the painkiller aspirin is derived. This matters in Communicable diseases because it supports the learning objective to recall that the painkiller aspirin originates from willow. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions. This matters in Communicable diseases because it supports the learning objective to recall that the painkiller aspirin originates from willow. In exam questions, treat willow as the natural source or organism students must remember, rather than the drug that comes from it.

penicillin

An antibiotic discovered by Alexander Fleming, derived from the Penicillium mould, used to treat bacterial infections.

Alexander Fleming

A Scottish bacteriologist who discovered penicillin in 1928, marking a significant advancement in medical treatment.

synthesis

In Discovery and development of drugs, synthesis refers to the process by which chemists create new drugs in the pharmaceutical industry. This matters in Communicable diseases because it supports the learning objective to explain that most new drugs are synthesised by chemists in the pharmaceutical industry. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

pharmaceutical industry

The sector of the economy that develops, produces, and markets drugs and medications.

chemical extraction

The process of obtaining a substance from a plant or other source, which can be the starting point for developing new drugs.

plant-derived drugs

Medications that originate from compounds found in plants, which may serve as the basis for new pharmaceutical developments.

drug testing

In Discovery and development of drugs, drug testing refers to the process of evaluating new drugs to ensure they are safe and effective for use. This matters in Communicable diseases because it supports the learning objective to explain that new drugs must be tested to show that they are safe and effective. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

safety and efficacy

The assessment of a drug's ability to produce the desired therapeutic effect without causing harmful side effects.

toxicity

In Discovery and development of drugs, toxicity refers to the degree to which a substance can harm humans or animals. This matters in Communicable diseases because it supports the learning objective to explain that new drugs are tested for toxicity, efficacy and dose. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

efficacy

In Discovery and development of drugs, efficacy refers to the ability of a drug to produce the desired therapeutic effect. This matters in Communicable diseases because it supports the learning objective to explain that new drugs are tested for toxicity, efficacy and dose. Students should use this term accurately when they explain the biology, identify symptoms, or justify an answer in GCSE Biology questions.

preclinical testing

The process of evaluating a new drug's safety and efficacy using cells, tissues, and live animals before it is tested in humans.

live animals

Organisms used in preclinical testing to assess the biological effects and safety of new drugs prior to clinical trials.

clinical trials

Research studies that test new drugs on healthy volunteers and patients to assess their safety and efficacy.

healthy volunteers

Individuals without known health issues who participate in clinical trials to help evaluate the safety of new drugs.

clinical trials

Research studies that test new drugs on human participants to assess their safety and effectiveness.

optimum dose

The most effective amount of a drug that achieves the desired therapeutic effect with minimal side effects.

double blind trial

A clinical trial design in which neither the participants nor the researchers know who is receiving the treatment or the placebo, to eliminate bias.

placebo

An inactive substance or treatment given to a control group in a clinical trial, used to compare against the effects of the actual drug.

peer review

A process where scientific findings are evaluated by experts in the field before publication.

published results

The final outcomes of scientific testing and trials that are made available to the public after thorough evaluation.