Biology

Question 1

What is the shape of DNA?

Answer 1

Double helix

Question 2

What base pairs with adenine in DNA?

Answer 2

Thymine

Question 3

What components make the backbone of DNA?

Answer 3

Pentose sugar and Phosphate

Question 4

What is homeostasis?

Answer 4

Maintaining a stable internal environment

Question 5

Give an example of a response

Answer 5

Sweating or shivering

Question 6

How many parents are required for sexual reproduction?

Answer 6

2

Question 7

Asexual reproduction produces offspring that are

Answer 7

Genetically identical

Question 8

The stimulus-response model starts with?

Answer 8

Stimulus

Question 9

The main function of the nervous system is to

Answer 9

Transmit signals

Question 10

The part of a neuron that receives signals is the

Answer 10

Dendrite

Question 11

What is a type of asexual reproduction?

Answer 11

Budding, Binary fission, Fragmentation, vegetative propagation.

Question 12

The gap between two neurons is called

Answer 12

Synapse

Question 13

Which gland produces insulin?

Answer 13

Pancreas

Question 14

Are reflex actions voluntary or involuntary?

Answer 14

Involuntary

Question 15

DNA is found in the

Answer 15

Nucleus

Question 16

What does the endocrine system use?

Answer 16

Hormones

Question 17

The main function of a Axon is to

Answer 17

Transmit signals away from the cell body

Question 18

Which process results in genetic variation out of asexual and sexual reproduction?

Answer 18

Sexual reproduction

Question 19

List some advantages of asexual reproduction.

Answer 19

Fast population growth, less time taken and only 1 parent required.

Question 20

Which feedback loop amplifies a change?

Answer 20

Positive feedback

Question 21

Define stimulus

Answer 21

An event that evokes the feedback loop eg. Hot temperature.

Question 22

The pituitary gland is located in the

Answer 22

Brain

Question 23

Which part of the neuron sends signals to other cells

Answer 23

Axon

Question 24

The function of the myelin sheath is to:

Answer 24

Speed up nerve impulses

Question 25

What is the function of sensory neurons

Answer 25

Carry signals from receptors to the CNS

Question 25

Which is the correct order for the reflex arc

Answer 25

Receptor → Sensory neuron → CNS → Motor neuron → Effector

Question 26

The central nervous system (CNS) includes

Answer 26

The brain and the spinal chord.

Question 27

Which hormone controls metabolism

Answer 27

Thyroxine

Question 28

Which structure carries nerve impulses away from the cell body

Answer 28

Axon

Question 29

Advantages of sexual reproduction

Answer 29

Offspring is genetically different, and that the species can adapt to a new environment.

Question 29

Which organ produces adrenaline

Answer 29

Adrenal glands

Question 30

The main role of the reflex arc is to

Answer 30

Provide fast, involuntary responses

Question 30

Which part of the neuron insulates the axon

Answer 30

Myelin sheath