Chapter 2 Chapter Test

Question 1

Molecules are made of of particles called

Answer 1

Atoms

Question 2

Positively charged particles within the nucleus of an atom

Answer 2

Protons

Question 3

Electrons inhabit regions of the atom called

Answer 3

Energy levels

Question 4

Substances sighing molecules having more than one kind of atom are called

Answer 4

Compounds

Question 5

A _____ chemical bond occurs when atoms share electrons

Answer 5

Covalent

Question 6

The symbol K+ represents the potassium

Answer 6

Ion

Question 7

A compiling that dissociates in water to form ions is called

Answer 7

An electrolyte

Question 8

Molecules that have a carbon-carbon bond

Answer 8

Organic

Question 9

In saltwater salt is the solute and water is the

Answer 9

Solvent

Question 10

When water is used to build up small molecules into larger molecules

Answer 10

Dehydration synthesis

Question 11

Solutions that have an excess of hydrogen ions

Answer 11

Acid

Question 12

Blood contains chemicals that help to maintain pH

Answer 12

Buffers

Question 13

Example of glycogen

Answer 13

Carbohydrate

Question 14

Example of collagen

Answer 14

Protein

Question 15

Example of RNA

Answer 15

Nucleic acid

Question 16

Example of cholesterol

Answer 16

Lipid

Question 17

Example of NaCl

Answer 17

Salt

Question 18

Example of NaOH

Answer 18

Base

Question 19

Example of HCL

Answer 19

Acid

Question 20

Ion is formed when

Answer 20

Electrons are gained or lost

Question 21

Steroid hormones are

Answer 21

Lipids

Question 22

_____ and ______ are two fat based molecules that make up part of the structure of the plasma membrane

Answer 22

Phospholipid and cholesterol

Question 23

A term that refers to small structures inside the cell

Answer 23

Organelles

Question 24

______ is the movement of substances across a cell membrane using cell energy whereas ____ is the movement of substance across the cell membrane without using cell energy

Answer 24

Active transport; passive transport

Question 25

______ refers to the movement of fluids or dissolved molecules into the cell by trapping them in the plans membrane

Answer 25

Phagocytosis

Question 26

____ and ______ are two nucleic acids that are involved in transcription.

Answer 26

DNA and mRNA

Question 27

Process of protein synthesis that uses the info in mRNA to build a protein molecule

Answer 27

Translation

Question 28

______ is the process that forms the mRNA molecule

Answer 28

Transcription

Question 29

Segment of base pairs in a chromosome

Answer 29

Gene

Question 30

Total genetic package in a cell

Answer 30

Genome

Question 31

4 main types of tissue in the body

Answer 31

Epithelial, nerve, connective and muscle

Question 32

Specialized forms of diffusion

Answer 32

Filtration

Question 33

A long cell projection used to propel sperm cells

Answer 33

Flagella

Question 34

Bags of digestive enzymes found in the cell

Answer 34

Lysosomes

Question 35

Tubelike passages that carry substances through the cytoplasm

Answer 35

ER

Question 36

Short hair like structures on the free surface of some cells

Answer 36

Cilia

Question 37

Chemically process and package substances from the ER

Answer 37

Golgi apparatus

Question 38

Directs protein synthesis

Answer 38

Nucleus

Question 39

Protein factories in the cell

Answer 39

Ribosome

Question 40

Helps in the formation of ribosomes

Answer 40

Nucleoli

Question 41

Powerhouse of the cell

Answer 41

Mitochondria

Question 42

Anything that occupies space and has mass

Answer 42

Matter