Cell Cycle & Mitosis I
The purpose of the mitotic cell cycle is to produce daughter cells that __________.
a) have the same number of chromatids as the parent cell had chromosomes
b) have the same number of chromosomes as the parent cell but not the same genetic content
c) have a random assortment of maternal and paternal chromosomes
d) are genetically identical to the parent cell
e) None of the above are correct.
d) are genetically identical to the parent cell
DNA replication occurs in __________.
a) Prophase of mitosis
b) Cytokinesis
c) Metaphase of mitosis
d) G1 Phase of Interphase
e) S phase of Interphase
e) S phase of Interphase
When we say that an organism is haploid, we mean that __________.
a) its cells have a single set of chromosomes
b) It has half of a chromosome
c) Its cell have two sets of chromosomes
d) Its cells have half of one set of chromosomes
a) its cells have a single set of chromosomes
A molecule becomes more reduced when it:
A) Gains an electron
B) Changes shape
C) Loses an electron
D) Gains a H+ ion
A) Gains an electron
Where does glycolysis occur in a eukaryotic cell?
A) The matrix of the mitochondria
B) The cytoplasm
C) The inner membrane of the mitochondria
D) None of the above are correct
B) The cytoplasm
This is the region where two sister chromatids are attached to one another.
What is a centromere?
One event occurring during prophase is __________.
a) the synthesis of a new nuclear envelope
b) the beginning of the formation of a spindle apparatus
c) cytokinesis
d) Alignment of chromosomes in a single plane
b) the beginning of the formation of a spindle apparatus
What is the typical result when a diploid cell has completed meiosis?
a) two diploid cells
b) two haploid cells
c) four haploid cells
c) four diploid cells
c) four haploid cells
The synthesis of ATP is this type of chemical process:
A) Exergonic
B) Enthalpic
C) Entropic
D) Endergonic
D) Endergonic
The function of cellular respiration is to:
A) Produce carbohydrates
B) Extract CO2 from the atmosphere
C) Make macromolecules from monomers
D) Break down and extract usable energy from glucose
D) Break down and extract usable energy from glucose
How many paternal chromosomes are in a somatic human cell that is not engaged in cell division?
a) 23
b) 46
c) 92
d) 184
e) None of the above are correct.
a) 23
Which of the following represents a mismatch or incorrect description?
a) metaphase: chromosomes line up on the equatorial plane
b) anaphase: there is movement of the chromosomes to the poles
c) prophase: chromosomes become more tightly coiled
d) metaphase: the nuclear envelope disappears
e) telophase: chromosomes begin to unwind
d) metaphase: the nuclear envelope disappears
Synapsis occurs during __________.
a) Prophase II
b) Cytokinesis
c) Metaphase I
d) Prophase I
e) Anaphase I
d) Prophase I
These two compounds function as electron carriers that shuttle electrons to the Electron Transport Chain during respiration.
What is NAD+ and FAD?
Which of the following generates most of the NADH that delivers electrons the ETC?
A) Glycolysis
B) Pyruvate oxidation
C) Citric Acid cycle
D) Oxidative phosphorylation
C) Citric Acid cycle
If a cell contains 40 chromatids at the start of mitosis, how many chromosomes will be found in each daughter cell at the completion of the cell cycle?
a) 10
b) 20
c) 30
d) 40
e) 120
b) 20
You would know that a dividing cell was a plant cell rather than an animal cell if you saw that __________.
a) it had microtubules
b) it had formed a cell plate
c) it had two pairs of centrioles during prophase
d) it had formed a cleavage furrow
e) All of the above.
b) it had formed a cell plate
Which of the following occurs during anaphase I?
a) Chromosomes line up on one plate.
b) The cell is haploid.
c) The nuclei re-form.
d) Sister chromatids separate and migrate toward opposite poles.
e) Homologous pairs separate and migrate toward opposite poles.
e) Homologous pairs separate and migrate toward opposite poles.
Most of the ATP produced in cellular respiration comes from which of these processes?
A) ETC / Oxidative phosphorylation
B) Glycolysis
C) The Citric Acid Cycle
D) Substrate-level phosphoyrlation
A) ETC / Oxidative phosphorylation
This is the final electron acceptor at the end of the Electron Transport Chain during aerobic respiration.
What is Oxygen?
Down syndrome is characterized by cells having three copies of chromosome 21. As a cell in an individual with Down syndrome prepares to enter mitosis, how many chromatids would be present?
a) 23
b) 46
c) 92
d) 94
e) None of the above.
d) 94
Which of the following processes does NOT occur in dividing bacteria?
a) Mitosis
b) DNA Replication
c) Binary Fission
d) Separation of the origins of replication
e) All of the above occur in dividing bacteria.
a) Mitosis
The diploid number of chromosomes in a certain animal is 8 (2n = 8). How do the four pairs of homologous chromosomes align and separate during meiosis?
a) Exactly two maternal and two paternal chromosomes always move to each of the two poles.
b) All 16 chromatids move together.
c) They align and assort independently to form any of 16 different combinations.
d) The first to move influences all the others.
e) All of the maternal chromosomes always move to one pole, and all the paternal chromosomes always move to the other pole.
c) They align and assort independently to form any of 16 different combinations.
For each glucose molecule that enters glycolysis, how many ATP, NADH, and FADH2 are produced in the complete citric acid cycle?
A) 2 ATP, 6 NADH and 2 FADH2
B) 1 ATP, 3 NADH and 1 FADH2
C) About 38 ATP
D) 5 ATP, 12 NADH and 4 FADH2
A) 2 ATP, 6 NADH and 2 FADH2
When oxygen is scarce, muscle tissue performs lactic acid fermentation to do what?
A) Remove pyruvate made by glycolysis
B) Produce additional CO2
C) Use the energy in pyruvate
D) Regenerate NAD+
D) Regenerate NAD+