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PASS KPZ164 - Week 2 Revision Flashcards | StudBud
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PASS KPZ164 - Week 2 Revision
PASS KPZ164 - Week 2 Revision
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1
What bonds are responsible for the joining of the two DNA strands
Carbon Bonds
Hydrogen Bonds
Pinky Promises
2
Which enzyme "unzips" the double helix structure?
Helicase
topoisomerase
Single stranded binding protiens
Primase
3
Why is DNA reffered to as being "semiconservateive"?
Each new strand of DNA contains two brand new strands
Each new strand of DNA contains two old strands
Each new strand of DNA is completely unique from the old strand
Each new strand of DNA contains one old strand and one new strand
4
What does "DNA" stand for?
Deoxyribosenucleic Acid
Deoxyribosenucleic Acid
Deoxyribosenucleic Acid
Deoxyribosenucleic Acid
5
Which are the correct pairings of bases in DNA
G-T
A-C
A-T
G-C
6
Which of the following needs to occur during cytokineses in
PLANT CELLS
?
All listed need to occur
Vesicles accumulate at the metaphase plate, fusing to form the cell plate
New cell wall must form between daughter cells
Enzymes required to convert glucose into the new cell wall
7
Which stage is seen as similar to mitosis
Meiosis I
Meiosis II
8
Purines have 2 rings?
True
False
9
During which stage of mitosis does the nuclear envelope begin to fragment?
Prometaphase
Telophase
Interphase
Prophase
10
What is the purpose of DNA polyermase 1
Replacing the RNA primer
Forms the okazaki fragments
Joining the fragments left from okazaki fragments
It does not have a purpose
11
In which phase of meosis are chromosomes condensed, with no replication?
Anaphase II
Metaphase II
Telophase II
Prophase II
12
What is the purpose of DNA ligase
Synthesising the RNA primer
Joining the fragments left from the okazaki fragments
Replacing the RNA primer
Unwinding the DNA double helix structure
13
What is the meaning of haploid (in biology terms?)
When a cell has DOUBLE the number of chromosomes
Used to describe the USUAL number of chromosomes
Just an odd word. No need to know!
When a cell has HALF the usual number of chromosomes
14
Which enzyme synthesised the RNA primer?
Single stranded binding protiens
Primase
Helicase
topoisomerase
15
Which enzyme aids with reliving strain, ahead of the replication fork?
Helicase
topoisomerase
Single stranded binding protiens
Primase
16
Which phase does this diagram depict?
Anaphase II
Prophase II
Telophase II
Metaphase II
17
What is TRUE about telomeres
they protect important genes from being eroded in the replication process
they consist of 100-1000 repeats of [TTAGG]
they are the "sacrificial" DNA of a chromosome
They were discivered by a Tasmanian (AWESOME!)
18
How are the leading and lagging strands synthesised
The leading strand is synthesised at the same time the lagging
The leading strand is synthesised before the lagging
The leading strand is synthesised after the lagging
19
Which of the following about prokarote DNA replication?
Prokarotes can not replicate
Prokarotes don’t have a replication "bubble"
Prokarotes have a single origin of replication
Prokarotes have a single replication fork
20
In which stage of mitosis does division of the cytoplasm occur?
Interphase
Telophase
Cytokinesis
Annaphase
21
Which of the base bonding pairs creates a triple hydrogen bond?
G-C
A-T
22
Gamete formation is through which cell replication method?
Mitosis
Meiosis
23
Which enzyme prevents the single stands of DNA joining to reform the double strand?
Helicase
Single stranded binding protiens
topoisomerase
Primase
24
DNA stands are arranged in which direction when bonded together…?
At 90 degree angles
In the same direction
Antiparalell
They are not bonded together?
25
What is the enzyme which restores telomeres in some cell types?
Telomerase
No cell has an enzyme to protect their telomeres
anti-aging enzymes
26
What is a major benifet of crossing over during meiosis?
Keeps genes in the uniform combinations
Just for fun
Allows for maternal and paternal genetic matieral to remain non-mixed
Produces genetic variation
27
DNA polymerase (III)
Adds new strands in a 5' to 3' direction
Adds new strands in a 3' to 5' direction
Keeps the double stranded DNA apart
Completes the same role as DNA polymerase 1
28
In which stage of meiosis are the homologus chromosomes separated?
Mid-prophase 1
Metaphase 1
Telophase 1
Anaphase 1
29
The daughter cells, produced by meiosis, contain which amount of chromosomes as the parent cell
Double the amonunt of the parent
The same amount as the parnet cell
One fourth as many as the parent cell
Half as many as the parent cell
30
In which phase of the cell cycle is DNA replicated?
interphase
anaphase
prophase
Mitosis
31
Which two nucleotide bases are purines?
Cytosine + Thymine
Thymine + Adenine
Adenine + guanine
Guanine + Cytosine
32
In which direction is DNA synthesised?
3' to 5' direction
5' to 3' direction
33
Which is the longest phase of the cell cycle
G1 Phase
Interphase
Mitotic phase
DNA Synthesis
34
What is the name of the process where the cleaves the plasma membrane in two during mitosis?
Telophase
Cleavage Furrow
35
Which two nucleotide bases is a Pyrimidine?
Guanine + Cytosine
Cytosine + Thymine
Thymine + Adenine
Adenine + guanine
36
Which of the following cell replication methods is used for Cell repair?
Meiosis
Mitosis
37
Which enzyme is not used in synthesis of the leading strand
Ligase
DNA Polymerase (III)
Primase
DNA Polymerase 1
38
Purines have 2 rings?
False
True
39
3 nucleotide bases, together, form a…?
protien
aminoacid
anticodon
codon
40
In which stage of meiosis does the homologus chromosomes separate?
Meiosis I
Meiosis II
41
Mitosis produces non-identical daughter cells?
True
FALSE
42
Which is this phase is this a diagram of?
Anaphase 1
Metaphase 1
Early prophase 1
Metaphase 2
