Higher Biology Unit 3 KA1 a and b

Question 1

The ___________ spectrum shows the extent to which each wavelength of light is absorbed by a particular pigment.

Accepted Answer

Absorption

Question 2

What is formed by the fixation of carbon dioxide to RuBP by RuBisCo?

Accepted Answer

3PG

Question 3

What is the fate of the oxygen produced in photolysis?

Accepted Answer

Evolved from cell

Question 4

Name a technique which can be used to separate photosynthetic pigments from green plants.

Accepted Answer

Chromatography

Question 5

G3P can by synthesised into glucose or used to regenerate RuBP.

Accepted Answer

True

Question 6

Which of the following is the coenzyme that transports hydrogen to the carbon fixation stage?

Accepted Answer

NADP

Question 7

What is the approximate current global population?

Accepted Answer

7.8 billion

Question 8

Energy from the sun drives all of the Earth's food chains.

Accepted Answer

True

Question 9

Which of the following is a structural carbohydrate found in plant cell walls?

Accepted Answer

Cellulose

Question 10

Why are crops, in general, more efficient at providing food per unit area than livestock?

Accepted Answer

Energy is lost between trophic levels

Question 11

The absorption spectrum and the action spectrum for a green plant have very different shapes.

Accepted Answer

False

Question 12

Which of the following is an example of an environmental factor which can affect crop production?

Accepted Answer

Rainfall

Question 13

Carotenoids are accessory pigments and must pass the energy they absorb to which molecule?

Accepted Answer

Chlorophyll

Question 14

Which enzyme fixes carbon dioxide in the Calvin cycle?

Accepted Answer

RuBisCO

Question 15

3PG accepts hydrogen from NADPH and is phosphorylated by ATP to form what?

Accepted Answer

G3P

Question 16

Which of the following are products of the light reactions?

Accepted Answer

ATP, Oxygen and NADPH

Question 17

Which of the following is not a factor underpinning food security?

Accepted Answer

Preference of food

Question 18

What is the fate of most of the light energy to reach a leaf on a green plant?

Accepted Answer

Absorbed

Question 19

Which of the following is an example of when it might be more efficient to use land for livestock than crops?

Accepted Answer

When the habitat is unsuitable for crops

Question 20

What does RuBP stand for?

Accepted Answer

Ribulose bisphosphate

Questions 20