AnswersFirst Semester BiologyThe Process of Photosynthesis

The Process of Photosynthesis — Unit test Answers

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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
3

most likely

h
hypotonic
h
hypertonic
i
isotonic
o
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?

p
performs photosynthesis
c
controls what enters and leaves the cell
p
produces proteins
p
provides energy to the cell
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

best

D
Differentiation produces specialized cells from stem cells.
S
Self-renewal produces specialized cells from differentiated cells.
S
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

most

1
100x
5
500x
1
1,000x
5
5,000x
14

best

a
a cell that has double the number of chromosomes as the parent cell
a
a cell that has half the number of chromosomes as the parent cell
a
a cell that has double the number of chromosomes as the daughter cell
a
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
16

Which two microscopes generate three-dimensional images?

s
scanning electron microscope and scanning tunneling microscope ✓ Correct
t
transmission electron microscope and scanning electron microscope
s
scanning tunneling microscope and transmission electron microscope
c
compound light microscope and scanning electron microscope
19

Which homeostatic process is characterized by the diffusion of only water molecules?

a
active transport
o
osmosis
p
passive transport
d
dynamic equilibrium
20

What is shown in the image?

Question illustration
p
prokaryote
e
eukaryote
c
chloroplast
m
mitochondrion

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