Biology

Question 1

DEFINE DISEASE

Answer 1

Disease is any condition in which the body or parts of the body do not function properly.

Question 2

DEFINE PATHOGENS

Answer 2

Pathogens are disease causing organisms or agents - e.g. bacteria, viruses, fungi, parasites

Question 3

STEP 1 OF ANTIBIOTIC RESISTANCE

Answer 3

1. In a population of bacteria, oine bacteria mutates and becomes antibiotic resistant

Question 4

FUNCTION OF ANTIBIOTICS

Answer 4

Antibiotics are substances that kill or prevent the growth of bacteria.

Question 5

STEP 2 OF ANTIBIOTIC RESISTANCE

Answer 5

2. Antibiotcs kill off all bacteria excpt the antibiotic resistant ones

Question 6

STEP 3 OF ANTIBIOTIC RESISTANCE

Answer 6

3. Antibiotic-resistant bacteria multiplies, forming a population of antibiotic-resistant bacteria

Question 7

STEP 4

Answer 7

4. Antibiotic-resistant bacteria can transfer their mutation to other bacteria

Question 8

DEFINE ASPECTS OF VIRUSES

Answer 8

Viruses are pathogens about 1/100th of the size of bacteria
Classed as non-living because they do not need nutrients/produce waste
Must need a host cell to replicate

Question 9

DEFINE FUNGI

Answer 9

Some are useful - e.g. for food
Some are decomposers
Are made of spores (single cell)
Disease - tinea, thrush, Athletes’ foot, ringworm

Question 10

DEFINE PARASITE

Answer 10

An organism that lives on or in the body of another organism (host)
Disease - Malaria, Amoebic dysentry

Question 11

COLD V.S. FLU

Answer 11

COLD - snotty, rhinovirus

FLU - fever, influenza, body aches