BIOL 153: Exam #1- Macromolecules

Question 1

Which is NOT a function of a fluidity of a membrane?

Accepted Answer

pH

Question 2

True or false: a pyrimidine is the larger structure of the two nitrogenous bases.

Accepted Answer

False

Question 3

True or false: R groups can interact with each other.

Accepted Answer

True

Question 4

True or False: a single amino acid can radically alter protein function

Accepted Answer

true

Question 5

Which process requires energy?

Accepted Answer

Endergonic

Question 6

What makes an atom stable?

Accepted Answer

fulfilled octet rule

Question 7

which lipid is used for hormones?

Accepted Answer

steroids

Question 8

What is the monomer for nucleic acids?

Accepted Answer

nucleotides

Question 9

Which is considered an insoluble fiber?

Accepted Answer

Cellulose

Question 10

Which bond forms a carbohydrate?

Accepted Answer

Glycosidic

Question 11

Which polysaccharide comes from a bacterial cell wall?

Accepted Answer

Peptidoglycan

Question 12

True or False: the atomic numbers can be the same among elements.

Accepted Answer

False

Question 13

A-helix

Accepted Answer

Secondary

Question 14

Which display information on the outside of cells?

Accepted Answer

Glycolipids

Question 15

Which bond is for the primary structure of proteins?

Accepted Answer

Peptide

Question 16

In a strand of DNA, the percentage of adenine is 20%. What is the percentage of cytosine?

Accepted Answer

30%

Question 17

The process of water leaving a cell; therefore shrinking the cell.

Accepted Answer

Hypertonic

Question 18

true or false: ions can diffuse into a cell.

Accepted Answer

false

Question 19

True or False: an aldose group is more reactive than a ketose group.

Accepted Answer

true

Question 20

Where is energy stored from sunlight?

Accepted Answer

Chemical bonds

Question 21

Which is an example of an activated nucleotide?

Accepted Answer

ATP

Question 22

Which elements DO NOT participate in polar, covalent bonds?

Accepted Answer

Potassium

Question 23

Which element DOES NOT have a positive charge?

Accepted Answer

Chlorine

Question 24

____ is an educated guess, which uses if-then statements.

Accepted Answer

Hypothesis

Question 25

What is the most important aspect of a cell membrane?

Accepted Answer

maintains homeostasis

Question 26

How many amino acids are essential?

Accepted Answer

9

Question 27

Which enzyme breaks down starch?

Accepted Answer

amylase

Question 28

Which element is the most electronegative?

Accepted Answer

Florine

Question 29

Proteins have diverse function because of diverse ______

Accepted Answer

Structure, Shape, Size, Chemical Properties

Question 30

With complementary base pairing, which is incorrect?

Accepted Answer

C-A

Question 31

Which type of fat oxidizes more easily?

Accepted Answer

Unsaturated

Question 32

____ is supported by a wide body of evidence

Accepted Answer

Theory

Question 33

Which is more energetically stable?

Accepted Answer

Native state, Folded state of a protein

Question 34

How do monomers polymerize?

Accepted Answer

Dehydration reaction, Condensation reaction

Question 35

How many electrons can an orbital hold?

Accepted Answer

2

Question 36

What type of molecules would diffuse into a membrane?

Accepted Answer

gases

Question 37

Mass number is _____

Accepted Answer

Number of protons + neutrons

Question 38

Hemoglobin is an example of what protein function?

Accepted Answer

Transport

Question 39

ribozyme

Accepted Answer

Catalyzes reaction

Question 40

Which is a step in the regulation of proteins?

Accepted Answer

All the above

Question 41

True or False: RNA does not follow the antiparallel rule due to it being single stranded.

Accepted Answer

False

Question 42

Example: gravity

Accepted Answer

Law

Question 43

True or false: RNA is more stable than DNA.

Accepted Answer

False

Question 44

_______ variable is the one you measure.

Accepted Answer

Dependent

Question 45

True or false: the only difference between RNA and DNA is the U and T.

Accepted Answer

False

Question 46

True or false: a protein channel is faster at moving materials compared to a carrier protein.

Accepted Answer

True

Question 47

What helps proteins fold correctly?

Accepted Answer

Molecular chaperones

Question 48

Which property causes a sugar to form in a ring in aqueous solutions?

Accepted Answer

all the above

Question 49

Which bond forms for the secondary structure of proteins?

Accepted Answer

Hydrogen

Question 50

Which is NOT an example of a transport proteins?

Accepted Answer

Diffusion

Question 51

Which is NOT TRUE of acids?

Accepted Answer

decreases proton concentration of a solution

Question 52

What type of transport sets up a concentration gradient?

Accepted Answer

Indirect Active

Question 53

True or false: carbon dioxide needs a carrier protein for membrane entry.

Accepted Answer

false

Question 54

there are two molecules using a symporter into the cell. They go AGAINST their gradient.

Accepted Answer

No idea, Indirect Active

Question 55

What makes an enzyme a good catalyist?

Accepted Answer

specificity

Question 56

8 electrons in the 2nd valence shell

Accepted Answer

Octet Rule, Stability

Question 57

Electrons are found in the _____

Accepted Answer

Orbital

Question 58

Which structure is found in nature?

Accepted Answer

Cis

Question 59

A triglyceride is composed of how many fatty acids?

Accepted Answer

3

Question 60

Which linkages can mammals hydrolyze (break down)?

Accepted Answer

Alpha-1,4 glycosidic

Question 61

Which reaction forms a phosphodiester bond?

Accepted Answer

dehydration, condensation

Question 62

How does the Sodium-Potassium pump work?

Accepted Answer

3 Na out for 2 K in

Question 63

What type of molecule creates an electrochemical gradient?

Accepted Answer

Ions

Question 64

Which is a purine?

Accepted Answer

A

BIOL 153: Exam #1- Macromolecules

Questions 65

BIOL 153: Exam #1- Macromolecules

Questions 65