AnswersHSBIO Biology Sem 1 26-27Lab: Diffusion Across a Semi-permeable Membrane

Lab: Diffusion Across a Semi-permeable Membrane — Unit test Answers

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Consider this animal cell.Which organelles are labeled D, and what is one feature that distinguishes them from the other labeled organelles?

Question illustration
A
chloroplasts; the only organelles that produce sugars from sunlight
B
ribosomes; only found in animal and bacterial cells
C
centrioles; found in animal cells but not plant cells
D
mitochondria; the only energy-generating structures found in cells
3

The endosymbiotic theory provides an explanation for the origin of chloroplasts. Which trait of chloroplasts supports this explanation?

A
Chloroplasts do not reproduce.
B
Chloroplasts rely on proteins that are made by the cell.
C
Chloroplasts are larger than prokaryotic cells.
D
Chloroplasts have their own DNA.
5

How would the contractile vacuole of a freshwater amoeba respond if the organism was placed in seawater?

A
with more contractions
B
with fewer contractions
C
the contractions would suddenly cease
D
with the same frequency of contractions
6

The role of the cell membrane is most like the job of which person?

A
a firefighter who evacuates people from a burning building
B
a police officer who allows select people to enter and leave a crime scene
C
a bus driver who drives the express route from the suburb to downtown
D
a teacher who keeps students in the classroom during an exam
7

Consider this animal cell.Which organelles are labeled G?

Question illustration
A
centrioles
B
lysosomes
C
ribosomes
D
mitochondria
8

Which organelle breaks down sugar molecules that supply energy to the cell?

A
Golgi apparatus
B
nucleus
C
endoplasmic reticulum
D
mitochondrion
9

A scientist discovers a cell that has chloroplasts, cytoplasm, DNA, and a cell membrane. Which statement best describes how the cell could be classified?

A
The cell is prokaryotic because it has DNA.
B
The cell is prokaryotic because it has cytoplasm.
C
The cell is eukaryotic because it has a cell membrane.
D
The cell is eukaryotic because it has chloroplasts.
10

How is mitochondrial DNA (mtDNA) typing used in forensic science?

A
A suspect’s mtDNA sample is matched to an unknown sample of nuclear DNA that was found at a crime scene.
B
A suspect’s mtDNA sample is matched to an unknown sample of mtDNA that was found at a crime scene.
C
A suspect’s nuclear DNA sample is matched to an unknown sample of nuclear DNA that was found at a crime scene.
D
A suspect’s nuclear DNA sample is matched to an unknown sample of mtDNA that was found at a crime scene.
11

Which best defines homeostasis?

A
modifying the external environment
B
maintaining a stable internal environment
C
controlling what enters and exits the cell
D
movement of materials into the cell
12

The data in the table were recorded during an investigation in which a paramecium was placed in a hypertonic salt solution. If this data is shown in a bar graph, which description accurately represents the bars?

Question illustration
A
The graph has five bars of equal height.
B
The bars range from tallest for very high concentration to shortest for very low concentration.
C
The bar for very low concentration is twice the height of the bar for medium concentration.
D
The bar for very high concentration is five times the height of the bar for very low concentration.
13

Which organelle makes the proteins that are needed by the cell?

A
cell membrane
B
Golgi apparatus
C
ribosomes
D
nucleus
16

What is the basic unit of structure and function of all living organisms?

A
mitochondrion
B
mitochondrion
C
DNA
D
DNA
E
nucleus
F
nucleus
G
cell
H
cell
17

Which best describes the difference between osmosis and diffusion?

A
Osmosis is the movement of particles from a high to a low particle concentration, while diffusion is the movement of water from a high to a low water concentration.
B
Diffusion is the movement of particles from a high to low particle concentration, while osmosis is the movement of water from a high to a low water concentration.
C
Diffusion is the movement of particles from a low to a high particle concentration, while osmosis is the movement of water from a low to a high water concentration.
D
Osmosis is the movement of particles from a low to a high particle concentration, while diffusion is the movement of water from a low to a high water concentration.
18

Consider this animal cell.Which organelle is labeled I?

Question illustration
A
cell membrane
B
ribosome
C
endoplasmic reticulum
D
nucleus
19

Consider this plant cell.Which organelle is labeled A?

Question illustration
A
nucleus
B
vacuole
C
ribosome
D
mitochondrion

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