Module 1: Section 28.01

Module 1: Section 28.01
Identify the physiological process at "C." - Answer Sperm bind to the oocyte's sperm-
binding receptors.

A zygote contains __________. - Answer the diploid number of chromosomes

Match the event: Fertilization. - Answer Maternal and paternal gametes join to become
a zygote.

Identify the physiological process at "E." - Answer The zona pellucida hardens and
sperm-binding receptors are clipped off.

Identify the physiological process at "B." - Answer Calcium levels within the sperm rise
and trigger the acrosomal reaction.

An ovum is formed by _______. - Answer a sperm penetrating the egg and the oocyte
completing meiosis II

Sperm are known to bear __________ that respond to chemical stimuli that help them
locate the ova. - Answer olfactory receptors

How do sperm navigate to find a released oocyte in the uterine tube? - Answer they
"sniff" their way to the oocyte.

At week _______, the conceptus is now called an embryo. - Answer 3

Identify the physiological process at "D." - Answer Sperm contents enter the oocyte.

__________ refers to events that occur from the time of fertilization (conception) until
the infant is born. - Answer Pregnancy

Identify the physiological process at "A." - Answer A sperm cell weaves its way past
granulosa cells of the corona radiata.

Match the event: Penetration. - Answer Enzymes of sperm acrosomes digest the zona
pellucida.

Match the embryonic term with its correct characteristic: Fetus. - Answer Beginning at
week 9

All except which of the following prevent polyspermy? - Answer A decrease in zonal
inhibiting proteins

Polyspermy - Answer Entry of several sperm into an egg, occurs in some animals, not
humans.