Unit Test — Unit test Answers

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4

dioxidesoxygenproductsreactants

A
dioxides
B
oxygen
C
products
D
reactants
6

Study the diagram, which represents the general equation for photosynthesis.

Question illustration
A
Y - glucoseZ - oxygen
B
Y - glucoseZ - carbon dioxide
C
Y - carbon dioxideZ - hydrogen
D
Y - carbon dioxide Z - oxygen
7

Which order shows the levels of organization from largest to smallest?

A
organism, organ system, cell, organ, tissue
B
organism, tissue, organ system, organ, cell
C
organism, organ, organ system, cell, tissue
D
organism, organ system, organ, tissue, cell
8

Which statement describes the energy involved in diffusion?

A
Diffusion requires energy in all cases.
B
Diffusion requires energy only to move material in through the cell membrane.
C
Diffusion does not require energy in any situation.
D
Diffusion requires energy only to move material out through the cell membrane.
9

The diagram illustrates photosynthesis.

Question illustration
A
Carbon dioxide enters the stem through xylem.
B
Oxygen enters the stem through stomata.
C
Water is carried to the leaves by stomata.
D
Water is carried to the leaves by xylem.
10

Which is a component of cell theory?

A
Cells come from bacteria.
B
Cells come from cells.
C
Cells come from nonliving matter.
D
Cells come from non-cells.
11

Examine the diagram of a cell.

Question illustration
A
chloroplast
B
mitochondrion
C
nucleus
D
ribosome
13

The picture shows molecules inside and outside of a cell. Assume that the molecules can pass through the cell membrane.

Question illustration
A
The molecules inside the cell will move out of the cell until they are all outside of it.
B
The molecules outside of the cell will move into the cell until they are all inside it.
C
The molecules inside the cell will expand in size until the cell is large enough to hold all the molecules.
D
The molecules outside of the cell will move into the cell until the number of molecules on both sides of the cell membrane is equal.
14

Which controls the movement of waste out of the cell?

A
mitochondrion
B
cell membrane
C
ribosome
D
chloroplast
15

Laaj made a Venn diagram to compare the two stages of cellular respiration.

Question illustration
A
Energy is released.
B
Oxygen is used up.
C
Glucose is broken down.
D
Carbon dioxide is used up.
16

Which process(es) has steps called prophase, metaphase, anaphase, and telophase?

A
meiosis and mitosis
B
mitosis and fertilization
C
fertilization only
D
meiosis only
17

Which statements describe differences between metaphase I and metaphase II? Select two options.Chromosomes line up in the middle in metaphase I only.Chromosomes condense in metaphase I only.A cell has half the number of chromosomes in metaphase II.There are twice the number of cells in metaphase II.Spindle fibers exist in metaphase II only.

A
Chromosomes line up in the middle in metaphase I only.
B
Chromosomes condense in metaphase I only.
C
A cell has half the number of chromosomes in metaphase II.
D
There are twice the number of cells in metaphase II.
E
Spindle fibers exist in metaphase II only.
20

Where in an equation for photosynthesis does oxygen belong?

A
on the left side, because it is a product
B
on the right side, because it is a product
C
on the right side, because it is a reactant
D
on the left side, because it is a reactant

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