Answer the following questions true (T) or false (F)

1. Different cell layers may have different cell adhesion molecules.

2. Menopause and puberty are both examples of developmental changes.

3. Normally, anywhere from one to four sperm fertilize the egg.


1. TRUE
2. TRUE
3. FALSE

Biology & Microbiology

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Transgenic animals are bred ________

a. for convenience in production b. all of the choices c. to increase food yield d. for medical research

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Which of the following eukaryotic organelles

are believed to have existed as independent prokaryotes in the past?

a. peroxisomes b. chloroplasts c. mitochondria d. lysosomes e. more than one of these

Biology & Microbiology

When there is the same amount of things inside of the cell compared to what's outside of the cell it is called what?

What will be an ideal response?

Biology & Microbiology

Infectious mononucleosis is caused by ________

A) pernicious anemia B) Epstein-Barr virus C) lead poisoning D) blood doping

Biology & Microbiology