The Biology Quiz

by Anshuman Mirani

Questions

1. Which gland secretes the most kinds of hormones?

2. Before DNA and proteins evolved, what is believed to have performed their functions?

3. What human organ has its own immune system that is separate from the "normal" one?

4. Why is the DNA in the mitochondria from your mother and not from your father?

5. What are the two types of nervous system cells?

6. Why do women’s menstrual cycles sync up when they live in close proximity with each other?

7. Which of the following is not found in plant cells: a) lysosomes; b) ribosomes; c) mitochondria?

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Answers

1. Pituitary gland

2. RNA

3. Brain

4. The sperm does not contribute any mitochondria

5. Neurons and Glia

6. It increases the chances of getting pregnant at the same time.

Explanation: By having women's cycle's the same, the chance of conception around the same time increases. This is evolutionarily favorable. If women who live with each other get pregnant at the same time, they can help each other in child rearing duties. In addition, any equipment for the child can be shared amongst the mothers.

7. Lysosomes

April 2007, Jeev
http://www.dce.edu/jeev






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