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WorksheetsUnit 4 & 5: BIO 1 FALL FINAL: 2018
Total questions: 50
Worksheet time: 29mins
Which bond must be broken in order for DNA to replicate?
bond 1
bond 2
bond 3
Look at the bases at the top left side of this picture of DNA. Pick the list of complementary nitrogen bases.
GTUG
GUAG
GATG
Knowing that [A + T] + [C + G] = 100.... If a sample of DNA has 10% C, what are the percentages of the other 4 bases?
G = 10 % ; A = 40% ; T = 40%
A = 40 % ; G = 40 % ; T = 10%
G = 90% ; A = 10% ; T = 10%
G = 10% ; A = 80% ; T = 80%
What makes up a nucleotide of DNA?
ribose + phosphate group + base
deoxyribose + phosphate group + base
What mutation is being shown in this image?
deletion
inversion
translocation
Knowing [A + T ] + [ C + G ] = 100, What are the % of C,G,A if there is 20% T?
C = 30 G = 30 A = 20 T = 20
C = 60 G = 60 A = 20 T = 20
Which type of mutation is more fatal/lethal?
all mutations are always fatal
frameshift
point
inversion
A strand of DNA is exposed to excessive heat. What will happen (first) to the DNA?
more bases can be added into the helix
the bonds will be broken
the nitrogen bases can switch places and put in a different order
bonds will be strengthened
What type of mutation is being shown below:
DNA original: TTCTAG
DNA mutated: TTGTAG
frameshift
point
mutagen
duplication
DNA is being replicated below. What describes what you see?
DNA was translated
DNA was transcribed
a mutation was made when DNA was replicated
If a DNA triplet was transcribed then translated, what is the amino acid?
DNA = triplet = AAC
leucine
histidine
proline
Where does translation take place?
in the cytoplasm (in a ribosome)
in the nucleus
at the ER
cell
What is the location where mRNA is read, amino acids are bonded together to build the protein?
in the nucleus
in the cytoplasm (in a ribosome)
In eukaryotic cells (cells with a nucleus), arrow "A" occurs in this location:
nucleus
cytoplasm
ribosome
Here is a piece of DNA: TTC - CAC - GAT
It is transcribed.
What is the mRNA molecule that results?
UUG - GTG - CUA
AAG - GTG - GAU
UUG - GUG - CUA
This picture shows how the genetic code is expressed. Identify the portions labeled X, Y, and Z.
X = DNA replication
Y = is a gene
Z = is a protein
X = transcription
Y = mRNA
z = translation
X = translation
Y = DNA
Z = transcription
Crossing over results in:
increasing the number of chromosomes
mutations during meiosis 2
chromosomes exchanging corresponding parts of DNA
Mitosis (in humans) ENDS with cells that have_____ chromosomes while Meiosis (in humans) ENDS with cells that have _____ chromosomes.
mitosis = 23
meiosis = 46
mitosis = 46
meiosis = 46
mitosis = 46
meiosis = 23
Exchange of genetic material between chromosomes during prophase I.
Fertilization
Crossing-over
Nondisjunction
Independent assortment
Why is genetic variation important?
Variation changes the diploid number for a species
Variation allows the creation of haploid gametes
variation allows species to adapt to changing environmental conditions
The exchange of segments of DNA between members of a pair of chromosomes:
is called crossing arms
always produces genetic disorders
acts as a source of variation within a species
Mitosis (in humans) STARTS with a cell that has _____ chromosomes while Meiosis (in humans) STARTS with a cell that has _____ chromosomes.
mitosis = 23
meiosis = 46
mitosis = 46
meiosis = 46
mitosis = 46
meiosis = 23
Skin cells, heart cells, ovary cells, and liver cells are all ___________ cells
body/somatic/diploid
body/somatic/haploid
gametes/diploid
gametes/haploid
Mitosis produces _______ cells ; meiosis produces _______ cells.
body
gametes
gametes
body
This diagram shows:
mitosis
crossing over
meiosis
A leafy sea dragon's snout cell has 50 chromosomes. After one cycle of meiosis, the daughter cell produced in meiosis would have _________ chromosomes while a cell that undergoes mitosis would have _______________ chromosomes.
meiosis = 50
mitosis = 25
meiosis = 25
mitosis = 100
meiosis = 25
mitosis = 50
A squirrel has 20 pairs of chromosomes. What is the diploid number?
10
20
40
Spinach has 12 chromosomes in its leaf cells. After 2 cycles of mitosis, what is the number of chromosomes in each of the new leaf cells?
3
6
12
24
If cucumbers have a diploid number of 14, how many chromosomes would be in the gametes of the cucumbers?
7
14
28
How many chromosomes are in your human body cells after 3 cycles of mitosis?
15
23
46
138
if a body cell (2n) has 30 chromosomes , how many chromosomes are in the (1n) cells produced by meiosis?
15
30
60
_______________ is the division of the cytoplasm
mitosis
cytokinesis
interphase
_______________ is the division of the nucleus
mitosis
cytokinesis
interphase
What is the purpose of mitosis? What is the purpose of meiosis?
mitosis: growth and repair
meiosis: make gametes to be able to reproduce
mitosis: reduce # of chromosomes
meiosis: repair damaged tissues
neither set of answers are correct
Which of the following types of reproduction requires only one parent?
sexual
asexual
Which of the following types of reproduction have offspring that are genetically identical to the parent?
sexual
asexual
Which type of reproduction requires the union of gametes?
sexual
asexual
Which type of reproduction requires fertilization?
sexual
asexual
What type of reproduction is energetically expensive?
sexual
asexual
Which of the following types of reproduction creates genetic diversity within a population?
sexual
asexual
In cell division, which type of cell division starts with one cell and ends up with two daughter cells?
mitosis
meiosis
In mitosis, how do the 2 daughter cells produced during cytokinesis compare to the original parent cell?
daughter cells are bigger than the parent cell
daughter cells require more food than then parent cell
daughter cells are genetic clones of each other and the original parent cell
Converting mRNA codons into tRNA anticodons to create (assemble) the protein is called ____.
transcription
translation
If the DNA strand below is transcribed, you would end up with mRNA at the end of transcription. Which one is the proper product of transcription (mRNA)?
DNA = AAT - TGG - CAT
mRNA: TTA - ACC - GTA
mRNA; UUA - UCC - GUA
mRNA: UUA - ACC - GUA
