Quiz: Hormones

1. Which of the following hormones activates the cell's DNA and “turns on” a specific gene ultimately causing the cell to respond?
a. steroid
b. protein
c. water-soluble
2. The release of calcium ions from the endoplasmic reticulum can activate various enzymes causing a cell to respond. Which of the following hormone types ultimately initiate the release of calcium ions?
a. steroid
b. lipid-soluble
c. water-soluble
3. Endocrine products are initially secreted into __________.
a. ducts
b. glands
c. the bloodstream
4. Steroid hormones are made from __________.
a. cholesterol
b. amino acids
c. phospholipids
5. Some hormones are regulated by a negative feedback mechanism while others are regulated by a positive feedback mechanism. Which of the following operate on a negative feedback mechanism and positive feedback mechanism respectively?
a. insulin : oxytocin
b. prolactin : glucagon
c. oxytocin : insulin
6. The hormones produced by the endocrine system have an effect on the body, which is analogous to the effect nerves have on the body. Which of the following correctly compares the endocrine system to the nervous system?
a. Endocrine system: long lasting effects, affects nearby and distant tissue and has immediate response time Nervous system: short lasting effects, affects adjacent tissue and has delayed response time
b. Endocrine system: long lasting effects, affects nearby and distant tissue and has delayed response time Nervous system: short lasting effects, affects adjacent tissue and has immediate response time
c. Endocrine system: short lasting effects, affects nearby and distant tissue and has delayed response time Nervous system: long lasting effects, affects adjacent tissue and has immediate response time
7. Which of the following is the correct description of hormones that are eicosanoid hormones?
a. They are synthesized from amino acids.
b. They are synthesized from cholesterol molecules.
c. They are synthesized from the fatty acids of cell membranes.
8. Some hormones affect a cell by binding to membrane receptors while others diffuse into the cell. The hormones that bind to the membrane receptors are called __________ and the hormones that diffuse into the cell are called __________.
a. lipid-soluble; cyclic
b. cyclic; water-soluble
c. water-soluble; lipid-soluble

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