AQA AS Biology Unit 1 - Causes of Disease (3.1.1)

Revision flashcards for AQA AS Biology Unit 1 - Causes of Disease (3.1.1).

The flashcards take the form of question and answer, and the number of marks for each question is given in brackets (). These flashcards were formed using past paper mark scheme answers, the AQA Biology syllabus, the Nelson Thornes AQA Biology textbook and class/revision notes.

Also available (or soon to be available) are a full set of U1, U2, U4 & U5 notes for AQA Biology, as well as flashcards for each of the subunits within each unit.

Hope they help!

Created by: ex-Lechiayim
Created on: 13-04-13 16:23

What is the basic definition of a pathogen? (1)

A disease-causing microorganism

1 of 10

Name the three main types of pathogen (3)

Bacteria, Viruses & Fungi

2 of 10

Give the three main ways that pathogens gain entry to the body (3)

Breaks in the skin, gas exchange system (airborne pathogens), digestive system (waterborne pathogens)

3 of 10

Name the body's main anti-entry defense mechanisms (3)

Skin, mucous layer on exchange surfaces, anti-pathogenic enzymes in bodily fluid, stomach acid

4 of 10

How do pathogens cause disease (2)

Damaging host cell tissue (inhibit DNA/RNA synthesis, break down host membrane), producing toxins

5 of 10

Name the key factor that determines the rate at which symptoms develop (1)

The rate of mitosis/cell division of the bacteria/infected host cell

6 of 10

What is the basic definition of risk? (1)

A measure of the probability of that damage will occur as a result of a given hazard

7 of 10

What is the basic definition of hazard? (1)

A potential source of harm

8 of 10

Give three lifestyle factors that effect health (3)

Smoking, alcohol intake, diet, exercise, exposure to sunlight

9 of 10

Give three questions you should consider when analysing scientific data (3)

Has the study been repeated? Do those collecting the data have a vested interest/bias? Is the data collection method reliable? Has the correct factor been measured?

10 of 10

Other cards in this set

Card 2

Front

Name the three main types of pathogen (3)

Back

Bacteria, Viruses & Fungi

Card 3

Front

Give the three main ways that pathogens gain entry to the body (3)

Back

Card 4

Front

Name the body's main anti-entry defense mechanisms (3)

Back

Card 5

Front

How do pathogens cause disease (2)

Back

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AQA AS Biology Unit 1 - Causes of Disease (3.1.1)