Why is a biomass and/or energy pyramid always broadest at the bottom?
What will be an ideal response?
Producers typically account for most of the biomass in a pyramid, and top carnivores contribute relatively little. Energy losses occur in the subsequent transfers between plants and each trophic level of consumers.
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Which of the following is the introduction of a non-mutated gene at a random location in the genome in hopes of curing a disease?
a. gene therapy b. polymerase chain reaction (PCR) c. gel electrophoresis d. recombinant DNA
Classes of lipids include all of the following except
a. phospholipids. b. fats. c. waxes. d. carbohydrates. e. steroids.
Sexual reproduction is important to the survival of a species in a changing environment because
a)sexual reproduction requires less overall energy expenditure than asexual reproduction. b)sexual reproduction produces genetically different individuals. c)sexual reproduction requires only one individual. d)sexual reproduction produces genetically-identical individuals. e)All answers are correct.
T or F: the right arm is ipsilateral to the right legt
What will be an ideal response?