AnswersIL-Science 7 ACell Cycle

Cell Cycle — Unit test Answers

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1
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A student places four identical cells into four different liquids. Cell WSaltier than the cellXLess salty than the cellYHigher concentration of water than the cellZLower concentration of water than the cell Which cells would take in water and swell?

A
cells X and Z
B
cells W and Y
C
cells X and Y
D
cells W and Z
2
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An organism has 18 chromosomes in its body cells. Its sex cells have 9 chromosomes.Which statement correctly explains this?

A
Its body cells are haploid and a result of mitosis.
B
Its sex cells are diploid and a result of mitosis.
C
Its sex cells are haploid and a result of meiosis.
D
Its body cells are diploid and a result of meiosis.
3

Which image represents the step in mitosis when chromosomes condense and spindle fibers form?

A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D
4

Which best describes two ways in which hydrogen is involved in photosynthesis?

A
1 - Hydrogen is stored in leaves of plants.2 - Hydrogen combines with carbon dioxide to make glucose.
B
1 - Hydrogen is stored in leaves of plants.2 - Hydrogen combines with oxygen to make water.
C
1 - Hydrogen enters plants as a component of water.2 - Hydrogen combines with carbon dioxide to make glucose.
D
1 - Hydrogen enters plants as a component of water.2 - Hydrogen combines with oxygen to make carbon dioxide.
5

Which is a component of cell theory?

A
All living things grow into cells.
B
All living things are made of cells.
C
Cells come from nonliving matter.
D
Cells come from non-cells.
6

What happens during telophase II? Select three options.Chromosomes condense.Chromosomes line up along the middle.Spindle fibers disappear.Nuclear membranes form.Cytoplasm starts to divide.

A
Chromosomes condense.
B
Chromosomes line up along the middle.
C
Spindle fibers disappear.
D
Nuclear membranes form.
E
Cytoplasm starts to divide.
7

Carla drew a diagram to compare the roles of oxygen and hydrogen in photosynthesis.

Question illustration
A
Enters plant as a part of water
B
Combines with carbon dioxide
C
Is released into air through stomata
D
Is stored in leaves for later use
8

Which stage of the cell cycle causes the pinching in of the cell membrane to create two individual cells?

A
mitosis
B
cytokinesis
C
interphase
D
metaphase
9

What are the products of photosynthesis?

A
carbon dioxide and hydrogen
B
hydrogen, oxygen, and water
C
light energy, water, and carbon dioxide
D
oxygen and glucose
10

When will water move into a cell?

A
when the cell is moved from a pure water environment to a saltwater environment
B
when the concentration of water is greater outside the cell than inside the cell
C
when there are an equal number of water molecules inside and outside the cell
D
when the water inside the cell is warmer than the water outside the cell
11

Which process results in two identical cells?

A
meiosis
B
replication
C
fertilization
D
mitosis
12

In which step of meiosis do chromosomes first condense?

A
telophase I
B
telophase II
C
prophase I
D
prophase II
13

Which describes the role of carbon dioxide in photosynthesis?

A
It is a reactant, so it is released by the plant.
B
It is a product, so it is released by the plant.
C
It is a reactant, so it enters the plant.
D
It is a product, so it enters the plant.
14

Which lists the steps of mitosis in the correct order?

A
prophase, anaphase, metaphase, telophase
B
telophase, anaphase, metaphase, prophase
C
telophase, prophase, anaphase metaphase
D
prophase, metaphase, anaphase, telophase
15

Which group of organisms would Schleiden have been most likely to study?

A
flower, pine tree, or cactus
B
mushroom, slime mold, or mildew
C
jellyfish, elephant, or jaguar
D
ant, spider, or beetle

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