Biology

Question 1

1The respiratory quotient (RQ) for carbohydrate respiration is

Hard

A. 0.7 B. 1.0 C. 0.9 D. 2.0

Question 2

2Anaerobic respiration in yeast produces

Easy

A. oxygen and water B. lactic acid only C. ethanol and carbon dioxide D. glucose

Question 3

3In plants, water moves up the xylem mainly because of

Easy

A. gravity B. phloem pressure C. photosynthesis directly D. transpiration pull

Question 4

4The end products of anaerobic respiration in yeast are

Easy

A. ethanol and carbon dioxide B. oxygen and glucose C. water and carbon dioxide D. lactic acid only

Question 5

5Water moves up the stem of a plant mainly through the

Easy

A. phloem B. pith C. cortex D. xylem

Question 6

6The products of aerobic respiration are

Easy

A. glucose and oxygen B. ethanol and CO₂ C. lactic acid only D. carbon dioxide, water and energy

Question 7

7The transport of manufactured food in plants is called

Easy

A. translocation B. transpiration C. osmosis D. guttation

Question 8

8Water moves up the xylem mainly because of

Easy

A. phloem pressure B. transpiration pull C. respiration D. gravity

Question 9

9The Krebs cycle takes place in the

Hard

A. mitochondrial matrix B. cytoplasm C. ribosomes D. cristae only

Question 10

10The chamber of the heart that pumps blood to the whole body is the

Easy

A. right ventricle B. right atrium C. left ventricle D. left atrium