Question: QUESTION 1 The purpose of the mitotic cell cycle is to make a. gametes (sperm and eggs). ...

Question: QUESTION 1
The purpose of the mitotic cell cycle is to make

a. gametes (sperm and eggs).

…

QUESTION 1

The purpose of the mitotic cell cycle is to make

		a. gametes (sperm and eggs).
		b. haploid daughter cells.
		c. two daughter cells that are identical to the starting cell.
		d. haploid cells become diploid.
		e. tumors.

QUESTION 2

The three major checkpoints of the mitotic cell cycle

	a.	pause the cell cycle until conditions are right to continue dividing.
	b.	stop the cell cycle permanently.
	c.	stop the cell cycle and cause the damaged cell to die immediately.
	d.	are each controlled by growth factor concentrations in the environment of the cell.
	e.	are where the cell checks if it should undergo mitosis or meiosis.

QUESTION 3

During interphase

		a. DNA is replicated.
		b. cells divide.
		c. chromosomes move to opposite poles.
		d. sister chromatids separate.
		e. spindles first form.

QUESTION 4

Histones are proteins that

		a. remove phosphates from other proteins.
		b. form the core of a nucleosome.
		c. make cAMP.
		d. pull on sister chromatids during mitosis.
		e. are involved in cytokinesis.

QUESTION 5

When a ligand binds to a receptor or a protein is phosphorylated
it changes the function of the protein because ligand binding and
phosphorylation both

		a. change the shape of proteins.
		b. make the proteins move to the nucleus.
		c. make the proteins move from the nucleus to the cytoplasm.
		d. make the proteins bind to DNA.
		e. disrupt the membrane around the proteins.

QUESTION 6

When have spindles and asters started to form, but the
microtubules of the spindle have not yet reached kinetochores?

		a. prophase of mitosis and prophase I and II of meiosis
		b. prophase of mitosis and metaphase I and II of meiosis
		c. interphase of mitosis and interphase before meiosis I and II
		d. metaphase of mitosis and prophase I and II of meiosis
		e. None of the other answers is correct because microtubules of the spindle attached to the centrioles, not the kinetochores.

QUESTION 7

You perform a monohybrid cross of plants with a gene for plant
height with Mendelian inheritance. Tall (T) is dominant to short
(t). In the F1 generation you would expect

		a. half TT and half tt plants.
		b. half tall and half short plants.
		c. all short plants.
		d. all Tt plants.
		e. 75% tall plants.

QUESTION 8

G-proteins

a.		are active when they are bound to GDP.
b.		are active when they are bound to GTP.
c.		are activated by gravity.
d.		often bind to extracellular ligands that cannot cross the plasma membrane.
e.		are often found inside the Golgi apparatus.

QUESTION 9

Which of the following was NOT a part of Mendel’s experiments to
understand inheritance?

a.		He determined the sequence of genes in peas for seven characters, like pea color.
b.		He used true-breeding strains of peas which always give rise to progeny with the same characteristics.
c.		He crossed different true-breeding strains of peas to each other and counted frequency of traits in the progeny.
d.		He self-fertilized hybrid offspring and counted the frequency of traits in the progeny.
e.		He counted the frequency of traits of several generations of pea plants.

QUESTION 10

During mitosis, which happens after the chromosomes line up on
the metaphase plate?

a.		Chromosomes condense.
b.		Microtubules attach to the kinetochores.
c.		Sister chromatids separate.
d.		The nuclear envelope dissolves.
e.		Centrioles (centrosomes) move to opposite sides of the cell.

QUESTION 11

During mitosis of an animal cell, which of the following happens
FIRST?

a.		The nuclear envelope reforms.
b.		Cohesin degrades allowing the sister chromatids to separate.
c.		Microtubules attach to the kinetochores.
d.		The chromosomes align on the metaphase plate.
e.		the plasma membrane divides the cell into two daughter cells.

QUESTION 12

Interphase of the cell cycle includes

		a. mitosis and meiosis.
		b. mitosis and G phase.
		c. G₁, S and G₂ phases.
		d. cytokinesis.
		e. mitosis and cytokinesis.

QUESTION 13

During mitosis of an animal cell, which of the following happens
LAST?

a.		The chromosomes condense.
b.		Microtubules connect a centriole at one pole of the cell and to a centromere in the middle of a chromosome.
c.		The metaphase plate forms.
d.		Sister chromatids are pulled to opposite poles.
e.		The nuclear envelope dissolves.

QUESTION 14

The purpose of meiosis is to

	a.	get exactly one copy of each chromosome into each daughter cell.
b.		make diploid gametes from haploid cells.
c.		to get exactly one copy of each type of chromosome into each daughter cell.
d.		combine the chromosomes in a sperm cell with the chromosomes in an egg cell.
e.		replace cells that have died.