Which of the listed contraceptive methods is the most effective?

a. withdrawal
b. diaphragm
c. condoms
d. douching
e. rhythm method


ANSWER: c

Biology & Microbiology

You might also like to view...

Answer the following statements true (T) or false (F)

1. ATP synthase is a good example of a molecular machine that is composed of various protein subunits and that has moving parts. 2. The proton motive force is key to chemiosis because the H+ electrochemical gradient is lower in the intermembrane space than inside the matrix. 3. If oxygen is present, pyruvate will be converted to acetyl CoA in the mitochondrial matrix. 4. When a molecule of NAD+ (nicontinamide adenine dinucleotide) gains a hydrogen atom, the molecule becomes reduced. 5. Proteins and fats may be used as energy sources to drive aerobic respiration.

Biology & Microbiology

Most of the energy that is released by the full breakdown of glucose to CO2 and water ends up in _____

a. NADH b. ATP c. heat d. electrons

Biology & Microbiology

Which soil horizon, A, B, or C, contains larger soil particles, not much organic matter, and a greater accumulation of minerals?

1.A 2.B 3.C

Biology & Microbiology

Lysosomal proteins are marked by adding a phosphate to a _______ group.

a. glucose b. serine c. GDP d. mannose

Biology & Microbiology