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zoology > week 4 > Flashcards

week 4 Flashcards

1
Q

Which are present in RNA but not DNA?

Phosphate Group
thymine
Deoxyribose
Ribose
Uracil

A

Ribose
Uracil

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2
Q

What is left over when ATP is Dephosphorylated?

A

ADP and 2 phosphate groups bond to nucleotide

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3
Q

What molecule is produced when dephosphorylation occurs?

A

adenosine diphosphate

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4
Q

Which of the following is a monomer?
Nucelotide
Nucleic acid

A

Nucleotide

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5
Q

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

A

deoxyribose
adenine
guanine
cytosine
thymine

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6
Q

which monomers are found within lipids

A

glycerols, fatty acids

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7
Q

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

A

None

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8
Q

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

A

One

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9
Q

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

A

2 or more

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10
Q

Is lipid synthesis a dehydration or hydrolysis reaction?

A

Dehydration

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11
Q

Is lipid digestion a dehydration or hydrolysis reaction?

A

hydrolysis

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12
Q

Eukaryotic characteristics

A

membrane bound nucleus
cytoskeleton

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13
Q

Prokaryotic characteristics

A

no membrane bound nucleus
no cytoskeleton
cell walls

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14
Q

What eukaryotic organisms have cell walls?

A

plants

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15
Q

What eukaryotic organisms have no cell walls?

A

animals

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16
Q

Protozoa: single or multicelled?

A

single celled

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17
Q

Metazoa: single or multicelled?

A

Multi

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18
Q

What do phospholipids have that triglycerides do not?

A

phosphate group

positively charged molecule

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19
Q

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

A

Hydrophobic

20
Q

Is the head of a phospholipid hydrophobic or hydrophilic?

A

hydrophilic

21
Q

What is passive transport?

A

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

22
Q

Does passive transport require energy input?

A

no

23
Q

Diffusion definition

A

Molecules moving from regions of higher concentration to lower concentration

24
Q

Diffusion leads to…

A

entropy

25
Q

what is osmosis?

A

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

26
Q

what are carrier proteins

A

only transport (diffusion) specific molecules

27
Q

when are molecules let through Gated channels

A

only under certain conditions

28
Q

Are there restrictions on protein channels?

A

No

29
Q

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

A

high solute concentration

30
Q

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

A

Equal solute concentration

31
Q

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

A

Low solute concentration

32
Q

What direction is osmotic pressure generated?

A

From hypotonic to hypertonic

33
Q

Guanine tends to pair with

A

cytosine

34
Q

Adenine tends to pair with

A

thymine

35
Q

Pyrimidines always pair with

A

purines

36
Q

How many C rings do purines have?

A

2

37
Q

Which component of a nucleotide determines nucleotide behavior?

A

N base

38
Q

Easiest way to tell if a lipid is saturated

A

solid at room temperature

39
Q

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

A

Water pushes the hydrophobic molecules into a circular shape

40
Q

What is the name of the linkages between lipid monomers?

A

Ester Linkages

41
Q

Why are lipids a complex polymer?

A

they contain two different monomers

42
Q

first tenet of cell theory

A

all organisms are composed of cells

43
Q

second tenet of cell theory

A

cells are the smallest unit of life

44
Q

what 3 characteristics do all living cells share?

A

Centrally located DNA
Semi-fluid cytoplasm ‘filling’
plasma membrane

45
Q

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

A

deoxyribose has a missing oxygen

46
Q
A

zoology (7 decks)

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