Exam One

Question 1

smallest functional unit of a living organism

Answer 1

cell

Question 3

cell theory says

Answer 3

All living organisms are comprised of one or more cells.
Cells are the fundamental unit of life.
Cells originate only from preexisting cells.

Question 4

what are the four biomolecules

Answer 4

nucleotides, proteins, lipids, carbohydrates

Question 5

nucleotide bonds for monomer units

Answer 5

phosphodiester

Question 6

bond forming amino acid polymers

Answer 6

peptide

Question 7

nucleotide undergo _____ reactions to form nucleic acids

Answer 7

condensation

Question 8

____ is a precursor molecule for all other steroids

Answer 8

cholesterol

Question 9

fats (acylglycerols) serve as ____

Answer 9

long term energy storage

Question 10

phospholipids serve as

Answer 10

membrane structure

Question 11

steroids serve as

Answer 11

chemical messengers

Question 12

waxes serve as a

Answer 12

protective barrier

Question 13

mono and disaccharides are quickly metabolized to make

Answer 13

ATP

Question 14

Which type of carbohydrate is best used to store energy? (select from: simple carbohydrate, monosaccharide, disaccharide, complex carbohydrate)

Answer 14

complex

Question 15

enzymes (can undergo conformational change) interact with a ___ at an ___ ____

Answer 15

substrate; active site

Question 16

The relaxed euchromatin state of DNA is best utilized for which function?

Answer 16

gene expression

Question 17

What kind of molecule induces expression of specific genes? (select from: regulators, transcription factors, RNA, DNA)

Answer 17

transcription factors

Question 18

If hydrogen bonding failed to occur, which level(s) of protein organization would be affected?

Answer 18

secondary, tertiary, quartenary

Question 19

Direct movement of solute across the membrane.

Answer 19

simple diffusion

Question 20

Movement of water across the membrane to equilibrate impermeable solute concentration.

Answer 20

osmosis

Question 21

Movement of solute across the membrane using a transport protein as a passageway.

Answer 21

facilitated diffusion