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Unit Test — Unit test Answers

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A
A pea plant has the same flower color as its parent plants.
A
A daughter looks different from both her mother and her father.
A
A cheetah cub has very similar fur to its mother.
A
A Labrador puppy looks exactly like its father.
2
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Which equation represents fertilization?

h
haploid + diploid = diploid
d
diploid + haploid = haploid
h
haploid + haploid = diploid
d
diploid + diploid = diploid
3

DNA replication occurs during which phase of the eukaryotic cell cycle?

S
S phase
G
G1 phase
G
G2 phase
M
M phase
4

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

d
differentiation
s
self-renewal
h
homeostasis
s
specialization
5

Which function of the cell cycle is especially important to burn victims?

g
growth of existing cells
r
repair of existing cells
p
protection of new cells
r
reproduction of new cells
6

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

3
3
6
6
2
24
4
48
7

What is the end result of the eukaryotic cell cycle?

n
no parent cells and two daughter cells
o
one parent cell and two daughter cells
t
two parent cells and one daughter cell
o
one parent cell and one daughter cell
8

Chloroplasts have a complex internal structure, as shown in the model below.In which location is glucose formed?

Question illustration
L
Location A
L
Location B
L
Location C
L
Location D
9

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
10

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

f
food digestion
s
skeletal movement
p
pumping of blood
h
heart contraction
11

best

O
One cell becomes two cells that have identical copies of DNA.
O
One cell becomes two cells that have different copies of DNA.
T
Two cells become two cells that have identical copies of DNA.
T
Two cells become two cells that have different copies of DNA.
12

In algae and plants, photosynthesis happens in the

v
vacuoles.
m
mitochondria.
c
chloroplasts.
c
chromosomes.
13

Which series of diagrams correctly represents the order of mitosis?

Question illustration
A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D
14

Tissue cultures (samples of cancer cells) are taken from cancer patients, and the cells are then grown in a laboratory. What is the purpose of growing cancer cells in a laboratory?

t
to test medicinal treatments before giving them to patients
t
to replace cancer cells with healthy cells
t
to provide evidence of cancer cells in the patient
t
to stop the cancer from growing in the patient
15

What do all cellular activities in living organisms use as a source of energy?

A
ATP
l
lactic acid
p
pyruvic acid
c
carbon dioxide
16

Which part of cell division is different in plant and animal cells?

A
cytokinesis
B
anaphase
C
mitosis
D
eukaryotic
17

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.
18

James wants to create a self-sustaining ecosystem, or vivarium. Which method would most likely result in an ecosystem that is viable for the longest amount of time with no additional care?

A
Put a few plants, water, sand, and a heat lamp inside a clear glass aquarium and seal the top. Place it in a sunny location.
B
Put water, fertilizer, soil, plants and insects in an open, clear glass aquarium. Place it in an area that has some sunlight and some shade.
C
Put rocks, water, and many plants in an open, dark-colored plastic tub. Place it in an area with direct sunlight.
D
Put soil, water, many plants, and a few insects in a sealed, clear plastic aquarium. Place it in an area with indirect sunlight.
19

How does ATP supply energy for cellular activities?

A
by breaking off a phosphate group from its structure
B
by releasing the sugar molecule from its structure
C
by adding a phosphate group to its structure
D
by attaching itself to a glucose molecule
20

Which is the first type of cell to differentiate?

A
neuron
B
epithelial cell
C
muscle cell
D
blood cell

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