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Worksheets19-20 Semester 1 Focused Review
Total questions: 40
Worksheet time: 20mins
How do scientists describe DNA Replication?
each new molecule has an original strand and a new strand
semi-conservative
occurs in the nucleus of eukaryotes
all of these
Where does this occur?
mitochondria
nucleus
cytoplasm
ribosome
What is going on here?
replication
transcription
translation
respiration
Where does this process occur?
mitochondria
nucleus
ribosome
cytoplasm
What process is shown?
replication
transcription
translation
respiration
Where are the chromosomses in Metaphase?
pairing up
headed to the poles
lined up on the equator
unwinding in the nucleus
What are chromosomes doing in Telophase?
headed to the poles
pairing up
unwinding in the nucleus
lining up on the equator
When does crossing over occur?
prophase I
metaphase I
prophase II
Metaphase II
Why is crossing over important?
It prevents DNA from getting tangled
It increases genetic variation
It allows the DNA to continue into the afterlife
It is not important and should not happen
What happens in anaphase?
DNA condenses and centrioles move to the poles
chromosomes line up on the equator
chromatids are pulled apart and move to the poles
two nuclei are formed
An oocyte will form a ___ and a spermatocyte will form a ___.
egg cell, sperm cell
sperm cell, egg cell
diploid cell, haploid cell
haploid cell, diploid cell
Why does crossing over occur?
because it wants to
homologs are paired up and can easily exchange parts
sister chromatids are matched up and easily exchange parts
random chromosomes meet and exchange parts easily
The difference between mitosis and meiosis is
mitosis produces 2 diploid cells, meiosis produces 4 haploid cells
meiosis occurs in germ cells, mitosis occurs in somatic cells
meiosis has 2 rounds of division, mitosis has 1 round
all of these are correct
Which of the following is TRUE about binary fission in prokaryotes?
binary fission does not form nuclear envelopes
binary fission does not produce multiple daughter cells
binary fission does not replicate DNA
binary fission occurs in eukaryotes
If a somatic cell of a horse has 64 chromosomes, how many chromosomes will the egg of a mare have?
32
128
64
none of these
What stages of the cell cycle are a part of interphase?
G1
G2
M
S
What is the correct order of the cell cycle?
G2, S, G1, M
M, G1, G2, S
G2, M, S, G1
S, G2, M, G1
What is the correct phase order of mitosis?
PMAT
PTAM
MAPT
MPAT
What is the term that means the fusion of gamete nuclei?
fertilization
reproduction
gametogenesis
How are cancer cells different from healthy cells?
Cancer cells originate from an outside organism
Cancer cells divide more slowly and die more quickly
Cancer cells do not follow the normal requirements for cell division
Cancer cells do not have copies of DNA from the parent cells
What part of the cell cycle is DNA replicated?
G1
G2
M
S
What is the monomer for building a nucleic acid?
fatty acid
amino acid
nucleotide
monosaccharide
What do we use lipids for?
muscle function
energy and insulation
controlling reactions
holding genetic instructions
What is an example of cohesion in the "real world"?
Icebergs float on the surface of the ocean.
Shivering helps people stay warm in cold temperatures.
A dog running at the park pants to cool down.
A person drinking water through a straw.
What is (are) the main difference(s) between passive transport and active transport?
Passive transport does not require any cellular proteins; active transport requires cellular proteins.
Active transport requires cellular energy for substances to cross the cell membrane; passive transport does not.
Passive transport occurs primarily in single-celled organisms; active transport occurs primarily in multi-cellular organisms.
Active transport works against gravity (for example, upwards from the roots of a tree); passive transport works with gravity (downward).
A plant's roots absorbing water from the soil is an example of ___.
endocytosis
osmosis
facilitated diffusion
pumps
Diffusion will happen if there is a(n) _ and will stop when _ is reached.
concentration gradient, perfect ratio
solute, equilibrium
concentration gradient, equilibrium
solute, perfect ratio
A human body cell in a hypertonic salt water solution will _
not change
swell
shrink
mutate
Which of these is passive transport for a cell
endocytosis
phagocytosis
sodium-potassium ion pump
facilitated diffusion
If I display the recessive trait for height, what would my genotype be?
HH
Hh
hh
none of these
Which of these is a a homozygous genotype?
BB
Bb
bb
all of these
If Susie's husband has the recessive trait and Susie has the dominant trait, is it possible for them to have a child who is recessive for height, also?
Yes, Susie could be heterozygous
No, because Susie is dominant
Yes, because anything is possible if I believe it is
If I show the dominant trait for hair texture, what could be my genotype?
HH
Hh
hh
If B=brown, b=blonde, S=straight, and s=curly...
What is the chance that this cross will produce offspring that have Brown, curly hair?
9/16
3/16
1/16
6/16
Which of these phenotype groups would be an example of codominance
blue and red
blue, red, purple
blue, red, and striped (blue and red)
Which of these phenotype groups would be an example of incomplete dominance?
blue and red
blue, red, purple
blue, red, and striped (blue and red)
What is the probability that the offspring will be heterozygous?
50%
0%
75%
100%
If a disorder is found to be recessive, how many alleles must you inherit to display this disorder if it is autosomal?
1
2
Not enough info to answer
If a disorder is found to be dominant, how many alleles must you inherit to display this disorder?
1
2
Not enough info to answer
How is hemophilia inherited?
sex-linked, recessive
sex-linked, dominant
autosomal, recessive
autosomal, dominant
