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The Process of Photosynthesis — Unit test Answers

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1
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Which refers to the maintenance of a stable internal environment despite changing external conditions?

A
differentiation
B
self-renewal
C
homeostasis
D
specialization
2
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Which structure will form when a primitive cell engulfs an aerobic bacterium?

A
mitochondria
B
chloroplast
C
nucleus
D
cell membrane
3

A patient is in need of hydration. Which type of solution are the patient’s cells most likely in?

A
hypotonic
B
hypertonic
C
isotonic
D
osmotic
4

Which statement best summarizes the importance of meiosis to reproduction?

A
It produces diploid cells that are needed for sexual reproduction.
B
It produces diploid cells that are needed for asexual reproduction.
C
It produces gametes that are needed for sexual reproduction.
D
It produces gametes that are needed for asexual reproduction.
5

Smooth muscle, which is a tissue made up of a type of specialized muscle cell, functions in which process?

A
food digestion
B
skeletal movement
C
pumping of blood
D
heart contraction
6

The data in the graph are the result of a paramecium being placed in a hypertonic salt solution.Based on the data in the graph, which would most likely happen if the paramecium were placed in distilled water?

Question illustration
A
The contractions would increase.
B
The contractions would decrease.
C
The contractions would cease altogether.
D
The contractions would establish dynamic equilibrium.
7

Which is a function of the cell membrane?

A
performs photosynthesis
B
controls what enters and leaves the cell
C
produces proteins
D
provides energy to the cell
8

If an organism's diploid number is 12, what would be its haploid number?

A
3
B
6
C
24
D
48
9

Which statement best describes the overall change that occurs as a result of mitosis?

A
One cell becomes two cells that have identical copies of DNA.
B
One cell becomes two cells that have different copies of DNA.
C
Two cells become two cells that have identical copies of DNA.
D
Two cells become two cells that have different copies of DNA.
10

Which best describes stem cells?

A
Differentiation produces specialized cells from stem cells.
B
Self-renewal produces specialized cells from differentiated cells.
C
Self-renewal produces differentiated cells from stem cells.
D
Differentiation produces stem cells from specialized cells.
11

A species of mud snail was studied for five years. During this time, scientists observed the season in which they mated, the number of offspring they produced, and the results of such stressors as drought, famine, and lack of mates. Which question were the scientists most likely studying?

A
What is the food source most often chosen by the mud snail?
B
Are the reproductive rates of mud snails affected by environmental changes?
C
Are mud snails more likely to choose mates with colorful shells?
D
Do mud snails prefer to live in water or near a water source?
12

A new multicellular organism has been discovered, and scientists want to study the organism’s cell structures, including organelles. Which microscope should they use?

A
scanning electron microscope
B
transmission electron microscope
C
compound light microscope
D
simple microscope
13

What is the maximum magnification of most classroom compound light microscopes?

A
100x
B
500x
C
1,000x
D
5,000x
14

Which best defines a diploid cell during meiosis?

A
a cell that has double the number of chromosomes as the parent cell
B
a cell that has half the number of chromosomes as the parent cell
C
a cell that has double the number of chromosomes as the daughter cell
D
a cell that has half the number of chromosomes as the daughter cell
15

Which is the first type of cell to differentiate?

A
neuron
B
epithelial cell
C
muscle cell
D
blood cell

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