Which condoms are useful for reducing your risk for contracting a sexually transmitted infection?

a. latex.

b. polyurethane.

c. lambskin.

d. both a and b are correct?

Substance with only one type of atom

Some people say it is not a good idea to eat a large meal after exercising or before you go to bed. Explain why this could be the truth or an old wives tale based on what you understand about how the neural and hormonal mechanisms control digestion.

What is your hypothesis regarding difference in urine "chloride" concentration between subjects who drank water and subjects who drank a sports drink? Briefly state the physiologic basis for your prediction.

Which of the following are considered macromolecules? select all that apply. A) nitrogen B) lipids C) proteins D) caron

A student conducted an experiment to test the effect of the digestive enzyme pepsin on cooked egg white and potato in the presence of hydrochloric acid at a pH of 1.

Which of the following is not a macronutrient? A) Carbohydrates B) Protein C) Vitamin C D) Fat

Agglutinins are surface antigens on RBCs. contain abundant stained "granules." prevent blood clotting. are antibodies that will attack surface antigens on RBCs of a different blood type.

Which of the following best explains why humans need constant supplies of fresh water? a. Humans need a constant supply of water to provide them with essential vitamins. b. Humans need a constant supply of water to maintain proper hygiene. c.

Which one of the following would be a good tool to represent data in terms of percentage of a whole?

A. E. coli is able to use foods other than glucose in the absence of available glucose, because falling levels of glucose cause an increase of B) activator protein A) operator B) promotor C) structural gene D) CAMP