Chapter 3 Section 1 Chemical Compounds in Cells

Question 1

Define Element and give 2 examples

Answer 1

substances that cannot be broken down

hydrogen, oxygen, carbon

Question 2

Define Compound and give 2 examples

Answer 2

when 2 or more elements combine chemically
water (2 hydrogen, 1 oxygen)
carbon dioxide (2 carbon, 2 oxygens)

Question 3

how is a compound different from an element?

Answer 3

elements make up compounds

Question 4

what 3 important functions does water perform for a cell

Answer 4

it helps keep temperatures regulated
allows chemical reactions to occur
helps keep cells their size and shape

Question 5

suppose a cell is deprived of water - how might this lack of water affect the cell’s enzymes?

Answer 5

since cells require water for chemical reactions to occur and enzymes speed up these chemical reactions, a lack of water would cause the enzyme not to perform its job

Question 6

what are 4 types of organic molecules found in living things?

Answer 6

carbohydrates, lipids, nucleic acids, proteins

Question 7

what type of large organic molecule is made up of smaller molecules called amino acids?

Answer 7

protein

Question 8

a _____ is a type of protein that speeds up chemical reactions in living cells

Answer 8

enzyme

Question 9

____ contain instructions that cells need to carry out all the functions of life

Answer 9

nucleic acids

Question 10

what are 2 kinds of nucleic acids and describe their functions

Answer 10

DNA - deoxyribonucleic acid- carries out instructions for the cell to function
RNA - ribonucleic acid - helps the production of proteins