Ch 1 : Cells And Heredity

Question 1

A rigid layer of nonliving material that surrounds the cells of plants and some other organisms

Answer 1

Cell wall

Question 2

A cell structure that controls which substances can enter or leave the cell

Answer 2

Cell membrane

Question 3

A cell structure that contains Nucleic acids the chemical instructions that direct all the cells activities

Answer 3

Nucleus

Question 4

Rod shaped structures that convert energy in food molecules to energy the cell ca use to carry out its functions

Answer 4

Mitochondria

Question 5

A structure in the cells of plants and some other organisms that captures energy from the sunlight and uses it to produce food

Answer 5

Chloroplast

Question 6

Any substance that cannot be broken down into simpler substances

Answer 6

Element

Question 7

Two or more elements that are chemically combined

Answer 7

Compound

Question 8

Energy rich organic compound such as a sugar or a starch that is made of the element carbon hydrogen and oxegyn

Answer 8

Carbohydrate

Question 9

Large organic molecule made of carbon hydrogen and oxygen nitrogen and sometimes sulfur

Answer 9

Protein

Question 10

Deoxyribonucleic acid the genetic material that carries information about an organism and is passed from parent to offspring

Answer 10

DNA

Question 11

Ribonucleic acid a Nucleic acid that plays an important. Role in the production of proteins

Answer 11

RNA

Question 12

A property of cell membranes that allows some substances to pass through while others cannot

Answer 12

Selectively permeable

Question 13

The process by which molecules move from an area of high concentration to an area of low concentration

Answer 13

Diffusion

Question 14

The diffusion of water molecules through a selectively permeable membrane

Answer 14

Osmosis

Question 15

The basic unit of structure and function in living things

Answer 15

Cell