Elements of Life (1.2)

Question 1

What do living systems need to grow, reproduce, ad maintain organization?

Answer 1

A constant input of energy

Question 2

Living systems mainly use energy stored in what?

Answer 2

Chemical bonds

Question 3

What is used to build new molecules?

Answer 3

Atoms and molecules from the environment

Question 4

What are the four macromolecules?

Answer 4

Carbohydrates, proteins, nucleic acids, and lipids

Question 5

All macromolecules contain what?

Answer 5

Carbon

Question 6

What two macromolecules contain nitrogen?

Answer 6

Proteins and nucleic acids

Question 7

What two macromolecules contain phosphorus?

Answer 7

Nucleic acids and lipids

Question 8

Carbon skeletons are created by what?

Answer 8

Carbon bonding to other carbon atoms

Question 9

What are three types of carbon skeletons?

Answer 9

Rings, chains, and branches

Question 10

Can other atoms attach to carbon skeletons?

Answer 10

Yes

Question 11

Carbon skeletons are used to make what?

Answer 11

Complex molecules

Question 12

Carbon containing molecules are used for what?

Answer 12

Storing energy and forming basic cell structures