BIOL 221 Final

Match the following

• vas deferens

• A

• bulbourethral gland

• B

• prostrate gland

• D

• seminal vesicle

• E

• ejaculatory duct

• C

• body of uterus

• E

• ovarian ligament

• F

• vagina

• G

• ovary

• B

• uterine tube

• A

Identify the process that is happening at A

Identify the process that is happening at B

Identify the process that is happening at C

Match the steps

• morula

• D

• ovum

• E

• blastocyst

• G

• spermatozoa

• F

• dividing zygote

• H

List the three primary germ layers and give an example of the organ systems each produces.

Answer explanation

Endoderm - Inner layer; digestive & respiratory organs

Mesoderm - Middle Layer; muscles & bones

Ectoderm - Outer layer; epidermis & brain

Explain the difference between mitosis and meiosis.

Answer explanation

Mitosis is cell reproduction, producing identical clones.

Meiosis is sex cell reproduction, producing cells that have half the number of chromosomes.

What is the zygote?

• The fertilised egg

• The stage of fetal development when the organs begin to form

• The stage of fetal development when the fetus becomes recognisable as human

• The stage of fetal development when the fetus begins to move

Stem cells are

• cells that grow uncontrollably
• undifferentiated and can be any type of cell
• never go through cell division
• only found in embryos