List and describe the five functions of the reproductive system.
What will be an ideal response?
1. The testes and ovaries produce the sex hormones.
2. Males produce sperm and females produce eggs.
3. Males nurture and transport the sperm in ducts. Females transport the eggs in the uterine tubes to the uterus.
4. The penis functions to deliver the sperm to the female reproductive tract. The vagina functions to receive the penis as well as transport the menstrual flow outside of the body.
5. The uterus allows for the fertilized egg to develop.
6. After birth, the breasts serve to produce milk for the developing child.
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The reagent used in the "string test" is:
a. bile solubility. b. sodium deoxycholate. c. bile esculin. d. 0/129 (2,4-diamino-6,7-diisopropylpteridine).
Small size, in general, is necessary for all cells, whether prokaryotic or eukaryotic. Why?
a. The surface area to volume ratio limits the size of all cells. b. If cells were larger, they would be eaten by predators. c. Size is limited by electron orbitals. d. They are limited by the size of the ecosystem.
Which of the following most accurately
describes the cellular activity associated with the actual passage of a nerve impulse? a. electrical discharge b. action of sodium-potassium pump c. positive feedback d. hyperpolarization followed by rebalancing e. active transport of ions
An __________ is an enclosed coastal region where seawater mixes with nutrient-rich fresh water
from rivers and streams. Fill in the blank(s) with the appropriate word(s).