The biome with the least annual variation in temperature is (refer to figure)
A) tropical forest
B) temperate broadleaf forest
C) northern coniferous forest
D) tundra
E) desert
Answer: A) tropical forest
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Which of the following statements about blood pressure is false?
a. Systolic pressure occurs when ventricles force blood into arteries b. The greater the blood volume, the higher the blood pressure is. c. The body has blood pressure receptors in the jugular vein and in the superior vena cava. d. Diastolic pressure occurs when ventricles are relaxed.
The "skeleton" of a typical sponge is composed of
a. bones. b. cartilages. c. spicules. d. scales.
If a mutagen such as EMS is used to produce numerous mutagenized cell lines for an organism, PCR can be used to select for a particular gene. However, what feature of this selected sequence is used to find the ones with mutations in that gene?
What will be an ideal response?
The process of using just enough heat to kill most (but not all) of the bacteria that cause spoilage in a beverage was developed by
a) Pasteur. b) Ehrlich. c) Lister. d) Koch.