Biology Review - Chapter 1-2

Question 1

____ is anything that takes up space and has mass.

Accepted Answer

Matter

Question 2

Which word describes water best?

Accepted Answer

Polar

Question 3

According to this theory, all living things are made up of cells.

Accepted Answer

Cell theory

Question 4

Anything with a pH of 7 is

Accepted Answer

Neutral

Question 5

A ________ is a statement that describes what always happens under certain conditions in nature

Accepted Answer

Scientific law

Question 6

A _____ is a mixture of two or more substances that has the same composition throughout.

Accepted Answer

Homogeneous mixture, Solution

Question 7

Which of these is NOT a nitrogenous base in DNA

Accepted Answer

Guanine

Question 8

A substance that forms as a result of a chemical reaction is called ______

Accepted Answer

Product

Question 9

A _____ is the basic unit of the structure and function of living things.

Accepted Answer

Cell

Question 10

What are the two MAIN types of carbohydrates?

Accepted Answer

Monosaccharides, and polysaccharides

Question 11

What % of the earth's surface is covered in water?

Accepted Answer

75%

Question 12

Which fatty acid is solid at room temperature?

Accepted Answer

Saturated

Question 13

Anything with a pH of 2 is

Accepted Answer

Acidic

Question 14

Which is NOT one of the 6 characteristics of living things?

Accepted Answer

Consists of matter

Question 15

A _____________ is a possible answer to a scientific question.

Accepted Answer

Hypothesis

Question 16

A(n) ___ is a pure substance that cannot be broken down into other types of substances

Accepted Answer

Element

Question 17

A solution with more hydronium ions is a ____

Accepted Answer

Acid

Question 18

______ is the process by which living things give rise to offspring.

Accepted Answer

Reproduction

Question 19

The sum of all of the biochemical reactions within your body is called _____.

Accepted Answer

Metabolism

Question 20

Which law states that matter can neither be created nor destroyed?

Accepted Answer

Law of Conservation of Matter

Question 21

Reactants ---> Products + Heat is an example of an _____ reaction.

Accepted Answer

Exothermic

Question 22

Anything with a pH of 13 is

Accepted Answer

Basic

Question 23

All living things try to keep their body at normal levels through _______

Accepted Answer

Homeostasis

Question 24

Reactants + Heat ---> Products is an example of which type of reaction?

Accepted Answer

Endothermic

Question 25

What is the third step of the scientific method?

Accepted Answer

Hypothesis

Question 26

A ______ is an organic compound made up of small molecules called amino acids.

Accepted Answer

Protein

Question 27

Organic chemistry is a branch of chemistry that studies mainly molecules that contain______

Accepted Answer

Carbon

Question 28

The energy needed to start a chemical reaction is called ______.

Accepted Answer

Activation energy

Question 29

A substance that starts a chemical reaction is called a _____.

Accepted Answer

Reactant

Question 30

A _____ is a substance that consists of two or more elements.

Accepted Answer

Molecule, Compound

Biology Review - Chapter 1-2

Questions 30

Biology Review - Chapter 1-2

Questions 30