AnswersAHS Biology CR PrescriptiveOverview of Animals

Overview of Animals Answers

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A scientist is studying an organism and has classified it as an animal.

A
It is multicellular.
B
It displays radial symmetry.
C
It has a backbone.
D
It contains cells without nuclei.
2
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multicellularheterotrophseukaryotesvertebrates

A
multicellular
B
heterotrophs
C
eukaryotes
D
vertebrates
3

Animals produce a substance called insulin, which helps them maintain healthy levels of glucose in their blood.

A
movement
B
feeding
C
reproduction
D
homeostasis
4

Which function allows animals to find mates?

A
movement
B
homeostasis
C
reproduction
D
feeding
5

Clams and oysters are examples of invertebrates.

A
shell
B
backbone
C
gills
D
muscles
6

A scientist discovers a new organism and is trying to classify it. Which observations would most likely indicate that the organism is an animal?

A
It is multicellular and can move itself from place to place.
B
It is heterotrophic and unicellular.
C
It makes food from sunlight and is eukaryotic.
D
It is prokaryotic and can move itself from place to place.
7

Which two characteristics describe all animals?

A
multicellular and symmetrical
B
multicellular and asymmetrical
C
heterotrophic and multicellular
D
heterotrophic and unicellular
8

Which two characteristics do all animals have?

A
They are symmetrical and heterotrophic.
B
They are heterotrophs and have a backbone.
C
Their cells have a nucleus and membrane-bound organelles.
D
They have a backbone, and their cells have membrane-bound organelles.
9

Which three steps describe how an animal obtains and uses energy for growth?

A
First, an animal eats another organism. Then, food is built into larger molecules. Next, the animal’s cells use molecules to make new cells.
B
First, food is built into larger molecules. Then, the animal eats another organism. Next, the animal’s cells use molecules to make new cells.
C
First, an animal eats another organism. Then, food is broken down into smaller molecules. Next, the animal’s cells use molecules to make new cells.
D
First, food is broken down into smaller molecules. Then, the animal eats another organism. Next, the animal’s cells use molecules to make new cells.
10

What do all vertebrates and invertebrates have in common?

A
They are prokaryotic.
B
They are covered by an outer skeleton.
C
They are multicellular.
D
They are bilaterally symmetrical.

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