Brainscape's Knowledge GenomeTM

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


See full index

Cell Bio > Unit 3 Cell Bio Stiller > Flashcards

Unit 3 Cell Bio Stiller Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

Which of the following is the correct nucleotide base pairing for DNA?

A

AT

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

Nucleotides contain

A

a sugar, a phosphate, and a nitrogen-containing base.

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

Which of the following are purine nucleotides?

A

adenine and guanine

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

DNA replication is said to be:

A

semiconservative

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

DNA is wrapped around ______________ to form _________________

A

histones, chromatin

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

The structure of chromatin resembles ______________________.

A

beads on a string

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

The enzyme that unwinds DNA for replication

A

helicase

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

Enzyme involved in DNA replication

A

all the above

polymerase, ligase, helicase, topoisomerase

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

Replication of DNA begins at which site?

A

origin

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

Continuous DNA replication:

A

leading strand

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

Discontinuous DNA replication:

A

B and C

lagging strand and okazaki fragment

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

(Mitotic) chromosomes consist of ______________ that are liked at the ________________.

A

sister chromatids; centromere

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

The enzyme that synthesizes the RNA primer

A

primase

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

The enzyme that links Okazaki fragments

A

ligase

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

The enzyme that proof reads DNA

A

polymerase

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

True or false? In DNA replication, new nucleotides are delivered as nucleoside-triphosphates

A

TRUE

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

DNA polymerase adds new nucleotides to the

A

3’ end of the newly forming strand

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

DNA polymerase binds to

A

primer

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

The approximate error rate of DNA replication with proofreading is

A

1 mistake per 10,000,000 nucleotides (107)

20
Q

In transcription….

A

DNA template is used to synthesize mRNA.

21
Q

RNA polymerase binds to

A

promoter

22
Q

_________________ blocks RNA polymerase and decreases transcription

A

repressor

23
Q

If you were looking for a TATA-box your best bet would be to ….

A

to take a close look at the template strand of DNA in eukaryotes.

24
Q

Post-transcriptional RNA modification involves….

A

all the above

addition of 5 prime G-cap, addition of 3 prime poly-A-tail, removal of introns, RNA splicing

25
Q

True or false. The peptidyl-amino transferase activity of ribosomes is located within the small subunit.

A

FALSE

26
Q

In translation,…

A

mRNA template is used to synthesize protein

27
Q

The anticodon sequence is located on

A

tRNA

28
Q

Which of the following is not directly involved in translation?

A

DNA

29
Q

Translation initiation involves

A

binding rRNA to mRNA

30
Q

Translation elongation involves

A

transfer of amino acid from P site to A site

should be a to p

31
Q

Translation termination involves

A

rRNA reaching stop codon

32
Q

A piece of mRNA that is 600 nucleotides long would be able to encode at most

A

200 AA

33
Q

The first codon used to begin making protein is always

A

AUG

34
Q

Which of the following is a stop codon?

A

All the above

UGA, UAA, UAG

35
Q

In elongation of translation, charged tRNA is brought into which site?

A

A site

36
Q

the enzyme involved in charging tRNA with an amino acid is ______________

A

aminoacyl-tRNA synthetase

37
Q

The enzyme involved in adding charged tRNA to the growing polypeptide is ____________

A

peptidyl-aminotransferase

38
Q

The Trp-operon is …

A

repressible

39
Q

The Lac-operon is …

A

inducible

40
Q

Eukaryotic gene expression involves …

A

all the above

activiators, enhancers, mediators, regulators

41
Q

(extra) Phospholipids are

A

Amphipathic

42
Q

(extra) The most common phospholipids on the extracellular side of plasma membrane is/are

A

Phosphatidylcholine

43
Q

(extra) The most common phospholipids on the cytosolic side of plasma membrane is/ are

A

Phosohatidylethanolamine and phosphatidylserine

44
Q

(extra) Which of the following is not a type of membrane protein?

A

Transporters, anchors, and receptors and enzymes

45
Q

(extra) True or false: channels transmembrane proteins

A

TRUE

46
Q

(extra) True or false: transmembrane proteins are integral proteins

A

TRUE

Cell Bio (3 decks)

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