week 4

Question 1

Which are present in RNA but not DNA?

Phosphate Group
thymine
Deoxyribose
Ribose
Uracil

Answer 1

Ribose
Uracil

Question 2

What is left over when ATP is Dephosphorylated?

Answer 2

ADP and 2 phosphate groups bond to nucleotide

Question 3

What molecule is produced when dephosphorylation occurs?

Answer 3

adenosine diphosphate

Question 4

Which of the following is a monomer?
Nucelotide
Nucleic acid

Answer 4

Nucleotide

Question 5

Which of the following can be found within DNA?
Deoxyribose
Ribose
Adenine
Guanine
Cytosine
Thymine
Uracil

Answer 5

deoxyribose
adenine
guanine
cytosine
thymine

Question 6

which monomers are found within lipids

Answer 6

glycerols, fatty acids

Question 7

How many C=C bonds do unsaturated fatty acids have?

Answer 7

None

Question 8

How many C=C bonds do monounsaturated fatty acids have?

Answer 8

One

Question 9

How many C=C bonds do polyunsaturated fatty acids have?

Answer 9

2 or more

Question 10

Is lipid synthesis a dehydration or hydrolysis reaction?

Answer 10

Dehydration

Question 11

Is lipid digestion a dehydration or hydrolysis reaction?

Answer 11

hydrolysis

Question 12

Eukaryotic characteristics

Answer 12

membrane bound nucleus
cytoskeleton

Question 13

Prokaryotic characteristics

Answer 13

no membrane bound nucleus
no cytoskeleton
cell walls

Question 14

What eukaryotic organisms have cell walls?

Answer 14

plants

Question 15

What eukaryotic organisms have no cell walls?

Answer 15

animals

Question 16

Protozoa: single or multicelled?

Answer 16

single celled

Question 17

Metazoa: single or multicelled?

Answer 17

Multi

Question 18

What do phospholipids have that triglycerides do not?

Answer 18

phosphate group

positively charged molecule

Question 19

Are the fatty acid tails of a phospholipid hydrophobic or hydrophilic?

Answer 19

Hydrophobic

Question 20

Is the head of a phospholipid hydrophobic or hydrophilic?

Answer 20

hydrophilic

Question 21

What is passive transport?

Answer 21

substances that move from an area of higher concentration to an area of lower concentration

Question 22

Does passive transport require energy input?

Answer 22

no

Question 23

Diffusion definition

Answer 23

Molecules moving from regions of higher concentration to lower concentration

Question 24

Diffusion leads to…

Answer 24

entropy

Question 25

what is osmosis?

Answer 25

When a substance passes to the other side of the concentration to help balance the substance.

Question 26

what are carrier proteins

Answer 26

only transport (diffusion) specific molecules

Question 27

when are molecules let through Gated channels

Answer 27

only under certain conditions

Question 28

Are there restrictions on protein channels?

Answer 28

No

Question 29

is hypertonic a high or low solute concentration compared to another concentration?

Answer 29

high solute concentration

Question 30

Is isotonic a high or low solute concentration compared to another concentration?

Answer 30

Equal solute concentration

Question 31

Is hypotonic a high or low solute concentration compared to another concentration?

Answer 31

Low solute concentration

Question 32

What direction is osmotic pressure generated?

Answer 32

From hypotonic to hypertonic

Question 33

Guanine tends to pair with

Answer 33

cytosine

Question 34

Adenine tends to pair with

Answer 34

thymine

Question 35

Pyrimidines always pair with

Answer 35

purines

Question 36

How many C rings do purines have?

Answer 36

2

Question 37

Which component of a nucleotide determines nucleotide behavior?

Answer 37

N base

Question 38

Easiest way to tell if a lipid is saturated

Answer 38

solid at room temperature

Question 39

How does water minimize the surface-area of hydrophobic molecules?

Answer 39

Water pushes the hydrophobic molecules into a circular shape

Question 40

What is the name of the linkages between lipid monomers?

Answer 40

Ester Linkages

Question 41

Why are lipids a complex polymer?

Answer 41

they contain two different monomers

Question 42

first tenet of cell theory

Answer 42

all organisms are composed of cells

Question 43

second tenet of cell theory

Answer 43

cells are the smallest unit of life

Question 44

what 3 characteristics do all living cells share?

Answer 44

Centrally located DNA Semi-fluid cytoplasm 'filling' plasma membrane

Question 45

how to tell if an atom is a ribose or deoxyribose atom?

Answer 45

deoxyribose has a missing oxygen