Practice Test

Question 1

Which level of organization is characterized by a group of cells that work together to perform a common function?

Revolt · Accepted Answer

tissue

Question 2

Which is a characteristic of a typical carbon atom?

Revolt · Accepted Answer

Carbon can form single, double, and triple bonds.

Question 3

Which process is performed by both plants and animals to break down sugars to provide energy in the form of ATP?

Revolt · Accepted Answer

cellular respiration

Question 4

Which statement describes one way that RNA differs from DNA?

Revolt · Accepted Answer

They contain different five-carbon sugars and a different nitrogenous base.

Question 5

Which reaction is exothermic?

Revolt · Accepted Answer

a reaction that releases energy into the environment

Question 6

Which states the difference between an alcohol and an ether?

Revolt · Accepted Answer

In an alcohol, a carbon atom is single bonded to a hydroxide group open paren OH raised to the negative power close paren ; in an ether, an oxygen atom is single bonded to two carbon atoms.

Question 7

Which component is affected when a catalyst is added to a chemical reaction?

Revolt · Accepted Answer

the activation energy

Question 8

A lion eating a zebra is an example of which characteristic of life?

Revolt · Accepted Answer

using energy

Question 9

There are more hydrogen atoms in living organisms than any other atom, but oxygen is more abundant in terms of mass. Why is this statement true?

Revolt · Accepted Answer

Hydrogen atoms have a lower mass than oxygen atoms.

Question 10

A scientist is working with methane open paren CH sub 4 close paren and butane open paren cap c sub 4 cap h sub 10 close paren Which statement best compares these chemicals?

Revolt · Accepted Answer

They are compounds made of the same two elements, but each contain different numbers of atoms.

Practice Test Answers

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