chapter 8 Set 1

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Biology
Chapter 8
Biology 1406, Summer, Dr. Kirk Test4
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College: First year
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1

The primary source of energy for most organisms is ultimately derived from

the sun

2

Which of the following type of organism is most likely an autotroph?

tree

3

These organisms most specifically utilize light energy to make organic molecules from inorganic molecules.

photoautotrophs

4

________ consume organic molecules to live.

Heterotrophs

5

Which of the following organisms produce organic matter from inorganic molecules?

A. photosynthetic bacteria
B. plants
C. algae
D. autotrophs

6

The equation, 6CO2 + 6H2O-->C6H12O6 + 6O2, describes a reaction that

is anabolic

7

The equation, 6CO2 + 6H2O-->C6H12O6 + 6O2, describes which of the following processes?

photosynthesis

8

In what portion of the plant does photosynthesis takes place?

A. mesophyll
B. chloroplast
C. thylakoid membrane
D. grana

9

The main structure for gas exchange in plants is called the

stomata

10

Which of the following statements would be most INCORRECT if there were a sudden decline in plants on Earth?

The rate of photosynthesis in existing plants would decline

11

Which of the following is NOT a product of the light reaction?

oxygen

12

A new flower species has a unique photosynthetic pigment. The leaves of this plant appear to be blue-green. What wavelengths of visible light does this pigment reflect?

red and yellow

13

Among the different forms of electromagnetic radiation emitted by the sun, which form is visible?

light

14

Which of the following statements about chlorophyll is correct?

It reflects light in the green light spectrum

15

This pigment is responsible for the red-yellow coloration seen in leaves during the color change in autumn.

carotenoids

16

Which of the following is mismatched with its location?

ATP synthase; intermembrane space

17

Which of the following produces NADPH

light reactions alone

18

During the light reaction water is oxidized to form oxygen. This process

yields low-energy electrons and is needed to replace the electron lost by P680 during the light reaction.

19

Which of the following molecules directly converts NADP+ to NADPH?

NADP reductase

20

Which of the following is FALSE when comparing the mitochondria and chloroplast?

The stroma of chloroplasts is similar to that of the mitochondrial inner-membrane space insofar as each has a higher H+ concentration relative to that of the chloroplast thylakoid lumen and the mitochondrial matrix.

21

During noncyclic electron flow of the light reaction, which molecule is the final acceptor of the high-energy electron?

NADP+

22

In photosynthesis, which of the following is LEAST involved in the production of ATP?

NADP reductase