Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Bio 101 Glendale college > EXAM 3 > Flashcards

EXAM 3 Flashcards

You may prefer our related Brainscape-certified flashcards:
Physics 101 flashcards Psychology 101 flashcards Chemistry 101 flashcards Biology 101 flashcards Organic Chemistry 101 flashcards Sociology 101 flashcards
1
Q

whether an allele is dominant or recessive depends on

A which chromosome it is on
B whether it is inherited from the mother or father
C whether or not it is linked to other genes
D ho common an alle is relative to other alleles
E whether it or another allele determines the phenotype in the heterozygote

A

E whether it or another allele determines the phenotype in the heterozygote

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

the phenotype of an individual

A

depends at least in part on the genotype

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

father has type O mother has type AB what blood types could their children have

A

Children could have blood types A or B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

a test cross is used to

A

determine whether an organism expressing the dominant phenotype is homozygous or heterozygous

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

in humans brown spotting of teeth is caused by a dominant X-linked gene id a man with brown teeth married a woman with normal teeth ……

A

all of their dughters would have brown teeth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

ABO blood groups are an example of

A

COdominance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

coat color in Labrador retievers is an example of

A

epistasis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

all the offspring of a white fox and black fox are all greay the simplest expleanation for this pattern of inheritance is

A

incomplete dominance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

a woman with hempopilia marries a normal man which of the following would best describe their children
A. their daughters will be hemophilic their sons will be normal
B their daughters will be normal their sons will be hempphelic
C all their daughters and sons will be carriers
D all daughters will be normal and 1/2 sons will be hemophilic
E all children will be hemophilic

A

B their daughters will be normal theirs sons will be hemophilic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

which of the following human traits is caused by non-disjunction

A xxy( klinefelters syndrome) 
B downs sydrom 
C sickle cell disease 
D hemophilia 
E both A and B
A

E both xxy( klinefelters syndrome) and downs syndrome

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

which of the following human traits is caused by an autosomal dominant alle

A

huntingtons disease

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

CcDd is crossed with CcDd what fraction of the offdpring are expected to have the first gene and the ressve pheno type for the second gene

A

3/16

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

cystic fibrosis is an autosomal rescessive disease in one family bth parents are heterozygous and they have two children what is the probabloity that both children are normal

A

9/16

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

why are some phenotypes complex

A

the phenotype is affected by the environment and is determined by multiple genes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

grffiths studies of streptococcus pnemoniae

A

demonstrated the phenomenon of bacterial transformation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

one strand of DNA has the sequence of 5’-GAACG-3’ the complementary strand for this

A

5’-CTTAGC-3’

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

what kind of damage does uv light cause to DNA

A

produces thimine dimers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

okazaki fragments are

A

joined together with helicase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

telomerase contains an rna sequence that acts as a template

A

true

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

whose experiments showed that DNA replication is semiconsorvative

A

meleson /stahl

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

which of the following best describes the flow of information( central dogma) within the cell

A

DNA–>RNA–>protein

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

which kind of RNA contains the information which specifies the amino acid sequence of a protein

A

mRNA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

which of the following enzymes can synthesize a strand of rna

A

DNA polymerase and rna polymerase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

what is the function of the enzymes known as aminozcyl tRNA synthetase

A

they put amino acids on the tRNA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

what contribution did rosalind franklin make to the discovery of the structure of DNA

A

she performed the X-ray crystaliography

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

where does transcription begin

A

at the promoter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

ribosomes are composed of

A

a few proteins and four rRNA molecules

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

what is the name of the enzymes that unwinds the double helix of DNA

A

helicase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

what cause sickle cell disease

A

a missense mutation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

what is the result when hologous chromosomes break at differnt positions and swap segments

A

deletion and duplication

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

the PCR reaction

A

amplifies specific DNA sequences

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

in PCR double stranded fragments of DNA are seperated into single strands by

A

heating

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

what happens when a dedoxyiribouleotide is added during a DNA sequence reaction

A

synthesis on that DNA strand stops

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

which of the following is a technique used to separate DNA molecules of differnt sizes

A

electrophoresis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

which of the following techniques would be most useful for quickley determing the identity of a drop of blood

A

PCR

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

viruses are obligate intracellular parasites

A

true

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

individuals with xeroderms pigmentosym are very sensitive to uv light why>

A

theyre excision repair mechanism does not work properly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

bacteriophage are bacteria that eat other bacteria

A

false

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

what is the genetic material of viruses

A

DNA single or double or rna single or doubel

40
Q

why do people need to get caccinated against influenza every year

A

the influenza virus changes from year to year

41
Q

hiv is a

A

retrovirus

42
Q

some bacteria can transfer DNA from cell to another through a tube called sexy pilus what is this process called

A

conjugation

43
Q

some bacteria can pick up DNA from their environment usuallly from cells that have died what is this process called

A

transformation

44
Q

proteins are synthesized starting from the C terminus and finishing at the N terminus

A

false

45
Q

peptidyl transferase activly is found in a molecule of tRNA

A

true

46
Q

bacteria are usally haploid

A

true

47
Q

a virus enters a bacteria cell and inserts a copyu of its genetic material into the host

A

the lysogenic cycle

48
Q

the simplest virsuses are composed of which of the folowing

A

capsid proteins and nucleic acid

49
Q

what enzymes produce the genetic material inside HIV

A

reverse transcriptase

50
Q

bacteriophage lambda infects a cell and makes lots of cl protein and little cro proteins what happens

A

a lysogenic cycle

51
Q

what is a wobble

A

altered rules for base pairing between codon and anticodon

52
Q

what is a signal sequance

A

it indicates where a protein should go

53
Q

what happens to proteins after translation

A

some proteins are modified by the addition of sugars and some proteins are modified by the addition of phosphate groups

54
Q

which of the following statments about HIV is False

a. HIV has a high mutation rate
b. Infection by HIV results in the destruction of helper T cells
c. Reverse transcriptase, protease, and integrase are required for HIV replication
d. HIV is surrounded by an envelope containing glycoproteins
e. Reverse transcriptase uses RNA as a template to synthesize DNA in the nucleus

A

reverse transcriptase usses RNA as a template to syntesize DNA in the nucleus

55
Q

influenza virus does not contain a viral envelope

A

true

56
Q

mendels experemnts support the blending theory of inheritance

A

false

57
Q

an individual pea plant is both male and female

A

true

58
Q

what did mendel discover from his monohybrid crosses

A

segregation of alleles

59
Q

what did mendel discover when he performed dihybrid crosses

A

independent assortment

60
Q

when a single allele has more than one distinguishable phenotypic effect the alle is

A

pleitropic

61
Q

we learned about an experimentwhere a cell in sphase was fused to a cell in G1 phase of the cell cycle what happened

A

the g1 phase nucleus began DNA replication

62
Q

when does DNA replication occur in eukaryotic cells

A

during interphase

63
Q

before s phase each chromose contains onkly one double stranded dna molecule

A

true

64
Q

when do chromosomes line up on the equater in mitosis

A

metaphase

65
Q

when do chromosomes become visable during mitosis

A

prophase

66
Q

when does dna synthesis take place in eukaryotes

A

s phase

67
Q

which of the following is a type of protein that wraps around to form beads on a string

A

histone

68
Q

before a cell can leave G1 and go to s of the cell cycle

A

RB protein must be phosphorlated by a Cdk

69
Q

in meiosis

A

homologous chromosomes separate from one another in anaphase I

70
Q

when does crossing over occur

A

prophase I

71
Q

what kind of cells divide by mitosis

A

eukaryotic cells

72
Q

when does cytokenisis usually begin

A

during telophase

73
Q

which of the following is not a function of mitosis

production of gametes

growth

asexual reproduction

cell replacement

repair of damaged organs

A

production of gametes

74
Q

how many chromosmes would be found in a normal human somatic cell during interphase

A

46

75
Q

the special cells that produce gamets in animals are called

A

germ cells

76
Q

during meiosis sister chromatids f each cromosome moce apart during

A

anaphase II

77
Q

the spindle is made of _________ and attatches to the _____________

A

microtubles, kinetochores

78
Q

sometimes chromosomes fail to separate properly during meiosis what is this process

A

nondisjunction

79
Q

what kind of sexual life cycle do most anuimals have

A

diplontic

80
Q

what kind of sexual life cycle do most plants have

A

alternation of generations

81
Q

What does HIV stand for

A

human immunodeficiency virus

82
Q

what does PCR stand for

A

polymerase chain reaction

83
Q

the ends of chromosomes are called

A

telomeres

84
Q

Dominant

A

always shows T

85
Q

recessive

A

needs two copies to show t

86
Q

homozygous

A

has two of the same either TT or tt

87
Q

heterozygous

A

has one of each Tt

88
Q

genotype

A

genetic makeup

89
Q

phenotype

A

physical characteristics

90
Q

What is rob protein

A

A tumor suppressor

91
Q

WHen does DNA replication occur in eukaryotes

A

During interphase

92
Q

What is p 21

A

A protein that weighs 21000 daltons

93
Q

What is cytokinesis

A

When a cell divides in two

94
Q

A patient odiscovers an unusual growth and goes to the doctors which diagnosis means that the growth is spreading

A

Metastasis

95
Q

A virus infects the cell and inactivated retinoblastoma protein what will happen next

A

Cell leaves g1 and goes to s phase

96
Q

How do prokaryotic cells divide

A

Binary fission

97
Q

Cell in s phase fused to G 1 phase what happens

A

G1 phase nucleus begin DNA replication

Bio 101 Glendale college (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions