Bacillus thuringiensis is used
a) to treat sewage.
b) in bioremediation.
c) as a natural insecticide.
d) to recycle vital elements.
Ans: c) as a natural insecticide.
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When male moose engage in their annual battles, butting heads with their oversized antlers, they are exhibiting ____
selection.
a. stabilizing b. disruptive c. directional d. intrasexual e. intersexual
Huntington’s disease is a dominant autosomal
genetic disorder. Albert has Huntington’s disease as did his mother. His father was normal. Albert is married to Lydia who does not have Huntington’s disease. If Albert and Lydia have a child, what is the probability that their child will have Huntington’s disease?
a. 0% b. 25% c. 50% d. 75% e. 100%
Consider the following food chain: hawk - rabbit - clover. Each species will contain a different amount of calories in its body (clover: 10 calories, rabbit: 500, and hawk: 1200). Each species has a different daily caloric requirement (clover: sunlight, rabbit: 100 calories, hawk: 300). How many clover plants, per day, does it take to support one hawk?
A. approximately 30 clover plants B. approximately 600 clover plants C. approximately 60 clover plants D. approximately 3 clover plants E. None, clover plants do not support hawks.
You are instructed to add 2.0ml of your original sample to 2.0ml of diluent. What is your dilution?
What will be an ideal response?