IB Biology Reproduction 1

What happens to the polar bodies formed during oogenesis?

• They cause the acrosome reaction.

• They cause the cortical reaction.

• They pull chromosomes to the ends of the cell when the zygote divides.

• They are not used and break down.

What part of spermatogenesis in humans takes place while spermatids are associated with Sertoli cells?

• Cell differentiation

• First division of meiosis

• Second division of meiosis

• Testosterone production

What is a difference between human sperm and human egg cells?

• Sperm have more chromosomes.

• Sperm have a larger surface area to volume ratio.

• Eggs have an acrosome.

• The division of the cytoplasm in sperm production is uneven.

In sexual reproduction each parent contributes a __________ gamete (a sex cell)

• Diploid

• Hiploid

• Ovum

• Haploid

Tags

NGSS.HS-LS3-2

The acronym GnRH, FSH and LH stand for:

• Gonadotropin-retracting hormone, follicle stimulating hormone, luteinising hormone

• Gonado- releasing hormone, follicle stimulus hormone, looting hormone

• Gonadotropin-reacting hormone, follicle stopping hormone, lutenising hormone

• Gonadotropin-releasing hormone, follicle stimulating hormone, lutenising hormone

Where are hormones produced (FSH, LH):

• The hypothalamus

• The anterior pituitary gland

• The brain

• The reproductive system

Progesterone is released by the female in order to:

• Increase ovulation

• Promote thick endometrium for implantation

• Decrease ovulation

• promote loss of endometrial lining

Estrogen levels decrease:

• Before ovulation

• After a menstrual period

• After ovulation

• During implantation

Estrogen works in the female to:

• Decrease the levels of FSH and LH

• Decrease the levels of progesterone

• Increase the levels of progesterone

• Increase the levels of FSH and LH

Tags

NGSS.HS-LS1-3

The prostate gland:

• Releases an acidic fluid to nourish sperm

• Releases a high carbohydrate fluid to nourish sperm

• Releases an alkaline fluid to neutralize vaginal pH

• Releases an alkaline fluid to nourish sperm