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Question 1

Which two characteristics describe all animals?

Revolt · Accepted Answer

heterotrophic and multicellular

Question 2

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

Revolt · Accepted Answer

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.

Question 3

A scientist is studying an organism and has classified it as an animal. Which statement must be true about the organism?

Revolt · Accepted Answer

It is multicellular.

Question 4

What do all vertebrates and invertebrates have in common?

Revolt · Accepted Answer

They are multicellular.

Question 5

Clams and oysters are examples of invertebrates. Which structure in these animals helps protect their internal body parts?

Revolt · Accepted Answer

shell

Question 6

Which function allows animals to find mates?

Revolt · Accepted Answer

reproduction

Question 7

Which statement accurately describes reproduction in animals?

Revolt · Accepted Answer

All animals can reproduce sexually, and some can reproduce asexually.

Question 8

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

Revolt · Accepted Answer

It is multicellular and can move itself from place to place.

Question 9

Animals produce a substance called insulin, which helps them maintain healthy levels of glucose in their blood. Insulin is most directly related to which function?

Revolt · Accepted Answer

homeostasis

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