Meiosis starts with a single diploid cell and produces

four haploid cells.

four diploid cells.

eight haploid cells.

two haploid cells.

two diploid cells.

four haploid cells

A cell preparing to undergo meiosis duplicates its chromosomes during

interphase.

prophase I.

metaphase I.

meiosis II.

anaphase I.

interphase.

During prophase I of meiosis,

there are two daughter cells, each with 23 chromosomes.

chromosome pairs are positioned in the middle of the cell.

homologous chromosomes stick together in pairs.

the homologous chromosomes separate and move towards opposite poles.

there are four haploid daughter cells.

homologous chromosomes stick together in pairs.

The correct order of events during meiosis is

prophase I, anaphase I, metaphase I, telophase I, meiosis II, cytokinesis.

prophase I, anaphase I, telophase I, metaphase I, meiosis II.

metaphase I, prophase I, anaphase I, telophase I, cytokinesis, meiosis II.

prophase I, metaphase I, anaphase I, telophase I, cytokinesis, meiosis II.

metaphase I, prophase I, telophase I, anaphase I, cytokinesis, meiosis II.

prophase I, metaphase I, anaphase I, telophase I, cytokinesis, meiosis II.

During meiosis, segments of nonsister chromatids can trade places. This recombination of maternal and paternal genetic material is a key feature of meiosis. During what phase of meiosis does recombination occur?

prophase I.

meiosis II.

telophase I.

anaphase I.

Metaphase I.

prophase I.

Art Based Question

Can you fill in the meiosis concept map?

See Photo

A) Diploid Organism

B) Haploid Organism

C) Meiosis II

D) Maternal Chromosome

E) Crossing Over Occurs

F) Sister Chromatids Separate

Which of the following reduces circulating blood levels of follicle-stimulating hormone (FSH) when the sperm count is high?

androgen-binding protein (ABP)

inhibin

estradiol

luteinizing hormone (LH)

inhibin

Which of the following would most directly interfere with sperm production?

ingestion of a substance that mimicked inhibin

interruption of sustentocytes' production of ABP

low sperm count

use of synthetic steroids (testosterone)

interruption of sustentocytes' production of ABP

The release of __________ encourages sustentocytes to release __________.

inhibin; testosterone

luteinizing hormone; testosterone

luteinizing hormone; androgen-binding protein

follicle-stimulating hormone; androgen-binding protein

follicle-stimulating hormone; androgen-binding protein

In males, which of the following includes the correct target and result of LH stimulation?

interstitial cells: ABP secretions

sustentacular cells: increase spermatogenesis

interstitial cells: androgen secretions

sustentacular cells: increase testosterone

interstitial cells: androgen secretions

Which of the following cells is released during ovulation?

primary oocyte

oogonium

secondary oocyte

ovum

secondary oocyte

Why does only one egg, rather than four eggs, develop during oogenesis, given that spermatogenesis results in four sperm formed from one stem cell?

Actually, gametogenesis (oogenesis in the female and spermatogenesis in the male) produces four eggs and four sperm.

The unequal cytoplasmic division that results in one egg and three polar bodies ensures that a fertilized egg has ample nutrients for its journey to the uterus.

Only one egg can be fertilized at a time.

The egg does not go through the meiotic division processes that the sperm undergo.

The unequal cytoplasmic division that results in one egg and three polar bodies ensures that a fertilized egg has ample nutrients for its journey to the uterus.

Formation of a secondary oocyte occurs during __________.

ovulation

the luteal phase

the follicular phase

pregnancy

the follicular phase

A surge in __________ directly triggers ovulation.

estrogen

progesterone

follicle-stimulating hormone (FSH)

luteinizing hormone (LH)

luteinizing hormone (LH)

What event coincides with the transition from the proliferative phase to the secretory phase?

Stratum functionalis is shed.

Enrichment of the blood supply and glandular secretions prepare for reception of an embryo.

menstruation

ovulation

ovulation

During what phase of the female’s uterine cycle is the uterine lining shed?

menstrual phase

secretory, or postovulatory, phase

proliferative phase

preovulatory phase

menstrual phase

What ovarian structure forms at the beginning of the secretory phase, encouraging its progress, and then degenerates just before menses?

corpus albicans

vesicular follicle

primary follicle

corpus luteum

corpus luteum

During the secretory phase of the uterine cycle, __________.

the endometrium is shed

ovulation occurs

the functional layer of the endometrium regenerates

the endometrium prepares for implantation

the endometrium prepares for implantation

What anterior pituitary-produced hormone works in conjunction with gonadal steroids to promote bone development?

growth hormone

prolactin

luteinizing hormone

follicle-stimulating hormone

growth hormone

Which male reproductive structure is NOT correctly matched with its function?

epididymis: produce sperm

bulbourethral gland: neutralize urethra before ejaculation

ductus deferens: carry sperm toward ejaculation

seminal vesicles: produce semen

epididymis: produce sperm

Which gland is NOT matched with its type of secretion?

seminal vesicles: 70% of seminal volume

prostate gland: milky, acidic semen

bulbourethral glands: lubricating secretion

urethra: clear, viscous mucus that neutralizes urine

urethra: clear, viscous mucus that neutralizes urine

Which of the following cells remains at the basal lamina to continue the pool of dividing germ cells?

type A daughter cells

type B daughter cells

primary spermatocytes

secondary spermatocytes

type A daughter cells

What is the function of the blood-testis barrier?

to prevent activation of the immune system of the male against the developing sperm

to filter out male sex hormones

to ensure that semen contains only sperm and seminal fluid

to provide only select nutrients to the developing sperm

to prevent activation of the immune system of the male against the developing sperm

Which of the following statements best describes the round ligament?

It connects the uterus to the labia majora.

It anchors the uterus and the ovary.

It anchors the ovary to the pelvic wall.

It is a large ligament that supports the ovaries, fallopian tubes, and uterus.

It connects the uterus to the labia majora.

The __________ is shed during each menstruation and is then regenerated by the __________.

stratum functionalis; stratum basalis

stratum basalis; stratum functionalis

stratum functionalis; myometrium

myometrium; perimetrium

stratum functionalis; stratum basalis

Which of the following is an INCORRECT matching of female reproductive structures with their functions?

uterine tube: transport unfertilized ovum to uterus for removal from the body

uterus: the womb--area of development of the fetus

ovarian follicle: ovum (egg) production

vagina: birth canal

uterine tube: transport unfertilized ovum to uterus for removal from the body