Cell division- Mitosis & Meiosis
Which explanation can the student form to describe how mitosis contributes to maintaining genetic continuity?
Mitosis increases genetic variation through the recombination of alleles.
Mitosis causes alleles to independently assort from each other during division.
Mitosis prevents mutations from occurring during replication of the genetic information.
Mitosis produces daughter cells with the same number of chromosomes as the parent cell.
Mitosis produces daughter cells with the same number of chromosomes as the parent cell.
3. Which statement is the best explanation for genetic variation.
New genetic combinations arise from separation of chromosomes in meiosis I.
New genetic combinations arise from crossing over of chromosomes in meiosis II.
New genetic combinations arise from chromosomes pairing together in meiosis I.
New genetic combinations arise from chromosomes staying together in meiosis II
New genetic combinations arise from separation of chromosomes in meiosis I.
What type of transport is osmosis?
A. facilitated diffusion
B. passive transport
C. simple diffusion
D. active transport
B. Passive transport
What is the probability that the offspring will have the AB blood type?
(Parents blood type- AO X BB)
A. 25%
B. 50%
C. 75%
D. 100%
B. 50%
Which could be a societal concern of producing transgenic organisms?
It can increase the shelf life of different foods
Eating transgenic foods can increase allergic reactions
It can decrease the amount of pesticides used in agriculture
Eating transgenic foods can decrease vitamin and mineral deficiencies
Eating transgenic foods can increase allergic reactions
How does the process of mitosis help in genetic continuity?
a. 44 ------- 22 & 22
b. 44 --------44
c. 44---------44 & 44
d. 44---------11 11 11 11
c. 44----------- 44 & 44
Which research question is the BEST for a scientist to ask to conduct research about the role of meiosis in the inheritance pattern?
Are the offspring in the cross haploid since the gametes in meiosis are haploid?
How does meiosis cause the appearance of the non-parental offspring in the F2 generation?
If meiotic crosses show a 9:3:3:1 ratio, do the actual offspring of the cross show the
same ratio?
If meiosis does not result in variation in the F1 parents, how does it result in variation in the F2 offspring?
How does meiosis cause the appearance of the non-parental offspring in the F2 generation?
If a cell is placed in a hypertonic sodium chloride (salt) solution, which TWO actions will be the MOST LIKELY result from the cell attempting to maintain homeostasis?
Salt will move by active transport out of the cell.
B. Water will move by osmosis out of the cell.
C. Salt will move by osmosis out of the cell.
D. You have finished the
E. The cell will shrink (crenation) as water moves between the environments to reach equilibrium.
B & E
Water will move out and cell will shrink
22. What type of DNA mutation results in no amino acid changes in the resulting protein compared to the protein made from the non-mutated DNA?
A. a silent mutation
B. a missense mutation
C. a nonsense mutation
D. a frameshift mutation
a silent mutation
How will genetic modification benefit the entire ecosystem?
The corn plant will be able to survive and produce more food for the ecosystem.
The chemical produced by the corn plant will be consumed by others in the ecosystem.
The modified gene will mutate, and the new chemical produced will not be toxic to the corn borer.
The corn plant will self-fertilize and cross- pollinate and continue to produce pest resistant corn plants.
The corn plant will be able to survive and produce more food for the ecosystem.
Which of the following BEST explains the impact of mRNA being double stranded before translation?
it would inhibit the binding of DNA to mRNA to synthesize protein
it would inhibit the binding of tRNA to mRNA to synthesize protein
it would lead to a two-fold increase in the amount of synthesized protein
it would lead to a two-fold decrease in the amount of synthesized protein
it would inhibit the binding of tRNA to mRNA to synthesize protein
During meiosis I, alleles from each parent organism are distributed among haploids randomly. Which of Mendel’s Laws describes this phenomenon?
A. Independent Assortment
B. Random Assortment
C. Segregation
D. Dominance
Independent Assortment
Which statement BEST explains how a lysosomal storage disease may affect the cell?
The cell cannot regulate its uptake and excretion of molecules.
Certain macromolecules accumulate to toxic levels within the cell.
There is reduced ATP production to fuel the cell’s metabolic needs.
Newly synthesized proteins cannot reach their correct destinations.
Certain macromolecules accumulate to toxic levels within the cell.
23. Which of the following statements are correct regarding the sickle cell trait and malaria? Select all that apply.
A person can be homozygous dominant for sickle cell and have a protective advantage
against severe malaria.
A person can be heterozygous for sickle cell and have a protective advantage against
severe malaria.
A person can be homozygous recessive for sickle cell and not have a protective advantage against severe malaria.
A person can be heterozygous for sickle cell and not have a protective advantage against severe malaria.
A person can be homozygous recessive for sickle cell and have a protective advantage over against severe malaria.
A person can be heterozygous for sickle cell and not have a protective advantage against severe malaria.
16. Which of the following should be considered as the result of therapeutic cloning ONLY, and why?
It involves testing new drugs for research purposes, and not for reproductive cloning.
It involves the growth of stem cells for research purposes, and not for reproductive cloning.
C. It involves the use of advantageous genes for research purposes, and not for reproductive cloning.
D. it involves the use of genetically modified embryos for research purposes, and not for reproductive cloning.
It involves the growth of stem cells for research purposes, and not for reproductive cloning.
Which characteristic of this cell's cytokinesis process ensures that equal chromosome complements are transmitted to each future daughter cell?
Cytokinesis occurs in telophase immediately after nuclear membrane formation.
Cytokinesis occurs in anaphase immediately after the segregation of chromosomes.
Cytokinesis occurs after nuclear membrane formation and immediately after telophase.
Cytokinesis occurs after the segregation of chromosomes and immediately after anaphase.
Cytokinesis occurs after nuclear membrane formation and immediately after telophase.
What percentage of the gametes resulting from a nondisjunction event of one chromosome pair during meiosis I will have only seven chromosomes?
0%
25%
50%
75%
50%
When compared to prokaryotic cells, eukaryotic cells
are simple, smaller, and have DNA floating freely throughout the cell.
are complicated, larger, and have DNA captured in a membrane-bound structure.
are round and hard, unlike rectangular and soft prokaryotic cells.
are able to move from place to place, unlike stationary prokaryotic cells.
are complicated, larger, and have DNA captured in a membrane-bound structure.
A monohybrid cross of short plants and tall plants, yields only heterozygous plants of intermediate height. This is an example of what pattern of inheritance?
A. Dominance
B. Codominance
C. Independent Assortment
D. Incomplete Dominance
Incomplete Dominance
Which argument is supported by these facts occurring in humans and other vertebrates?
Glucose’s small size allows it to be transported through cell membranes, which demonstrates that its size is related to its function.
Glucose is soluble in water which allows it to be transported through cell membranes, which demonstrate that its solubility is related to its function.
Glucose is an energy source because of its large proportion of carbon atoms, which demonstrates that its composition is related to its function.
Glucose is quickly broken down by liver and muscle cells to provide energy, which demonstrates that its type of chemical bonds is related to its function.
Glucose’s small size allows it to be transported through cell membranes, which demonstrates that its size is related to its function.
Which statement BEST explains, specifically, the step in meiosis which accounts for Mendel's law of independent assortment?
Sister chromatids separate independently of each other during anaphase I.
Sister chromatids separate independently of each other during anaphase II.
Homologous pairs of chromosomes separate independently of each other during anaphase I.
Homologous pairs of chromosomes separate independently of each other during anaphase II.
Homologous pairs of chromosomes separate independently of each other during anaphase I.
How does meiosis contribute to genetic variability?
During meiosis, gametes receive a full set of chromosomes, and the offspring resulting
fertilization have two full sets of chromosomes, and therefore, a larger number of gene combinations.
During meiosis, gametes receive half of the set of chromosomes, and, at fertilization, the
gametes are randomly assorted resulting in a unique set of chromosomes.
During meiosis, gametes receive different combinations of genes, and the offspring resulting from fertilization have a unique set of chromosomes.
During meiosis, gametes receive the same genes, and the combination of gametes at
fertilization give offspring characteristics of both parents.
During meiosis, gametes receive half of the set of chromosomes, and, at fertilization, the
gametes are randomly assorted resulting in a unique set of chromosomes.
By observing a half-leaf experiment tested negative for starch, what question can be answered?
Does carbon fixation occur during the light-independent reactions?
Do the light reactions supply the light- independent reactions with CO ?
C.Can the light-independent reactions in the Calvin cycle produce glucose without using CO ?
D. How much CO does the light-independent reactions in the Calvin cycle use to synthesize glucose?
Can the light-independent reactions in the Calvin cycle produce glucose without using CO ?
In a cross between an LlDd parent and an LlDd parent, what is the probability of an offspring inheriting the LlDd genotype?
0/8
2/8
⅜
5/8
2/8
Which statement CORRECTLY explains how DNA and RNA differ in structure?
DNA contains uracil while RNA contains thymine.
DNA contains deoxyribose while RNA contains ribose.
DNA is short-lived while RNA is a more stable molecule.
DNA is single-stranded while RNA is usually double-stranded.
DNA contains deoxyribose while RNA contains ribose.