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Questions in biology

[Free] Also need help on this one.

[Free] In an experiment, these are the variables that you make sure stay the same throughout the experiment. This makes for a fair experiment. A. Control Variable B. Independent Variable C. Dependent Variable

[Free] A testable prediction that predicts a cause and effect relationship between variables is a(n) A. analysis B. hypothesis C. observation D. inference

[Free] How do different temperatures (22 C or 40 C) affect the amount of bacteria in a Petri dish? Independent Variable: Dependent Variable: Constant: A. Amount of bacteria B. Size of petri dish C. Different temperatures

[Free] Which of the following is an example of a biological influence on intelligence? A. level of education B. generational changes C. inherited traits D. poor nutrition

[Free] Metagenesis i.e. alternation of generation does not occur in: a. Hydra b. Obelia c. Physalia d. Sea horse Note: Hydra occurs only in polyp stage

[Free] Genetic engineering is used to make what type of drugs? A. Synthetic B. Homeopathic C. Natural D. None of the above

[Free] When are hypotheses supported in science?

[Free] Why does cell division occur? Check all that apply. ☐ to generate energy for cellular processes ☐ to replace damaged cells ☐ make the body larger ☐ to create new molecules from component parts

[Free] When skeletal muscles are used for more than a minute or two, a condition called oxygen debt may occur. Select one: O True O False