Which birth control method does NOT suppress ovulation?
a. emergency contraception pills
b. birth control pill
c. Progestin implants
d. tubal ligation
e. progesterone patches
ANSWER: d
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Parasitoid wasps are sometimes involved in a plant's defensive response. In what way are the wasps helpful to the plant?
A. The wasps respond to a chemical the plant gives off when wounded, and the wasps lay their eggs on the caterpillar that wounded the plant. B. The wasps live in hollow thorns of the plants, and attack the plants' predators. C. The wasps stimulate the production of alkaloids the plants use for defense. D. The wasps enhance the plants' hypersensitive response. E. The wasps trigger leaf abscission so that herbivores do not have anything to eat.
In cardiac muscle
A) calcium enters the cell from storage chambers called intercalated discs. B) an action potential spreads throughout the Z discs. C) potassium is released from the sarcoplasmic reticulum. D) intercalated discs connect the muscle fibers together.
Which of the following is classified as a spongiform encephalopathy?
A) botulism B) variant Creutzfeldt-Jakob disease C) Hansen's disease D) arboviral encephalitis E) African sleeping sickness
1.0ml of sample added to 99.0ml of diluent is a 10^-2 dilution. What would the final dilution be if you added 0.1ml instead of 1.0ml?
What will be an ideal response?