How are simple diffusion and facilitated diffusion similar to each other?
a. They both belong to active transport.
b. They both transport through the aid of a transport molecule.
c. They both require energy.
d. They both belong to passive transport.
Ans: d. They both belong to passive transport.
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Since meningitis is caused solely by bacterial infections, antibiotic treatment is appropriate in all cases.
Answer the following statement true (T) or false (F)
For a particular gene, if one gene in a million experiences a mutation each generation, what is its mutation frequency?
What will be an ideal response?
Which of the following statements is not correctly matched with the given scientific method term?
A. Bethany watched butterflies feeding in a large field of wild flowers. She noticed that more butterflies approached the yellow and purple flowers than the red flowers. (Observation) B. All organisms are comprised of cells. (Data collection) C. Leslie set up mist nets to catch bats flying over a small stream. Each bat that was caught was weighed and sexed. (Experimental design) D. A researcher reported that red-foot tortoises preferred red-colored fruits and vegetables to those that were green or white. (Conclusion) E. Biologists suggested that 2-3 cups of coffee per day can decrease death rates among women. (Hypothesis)
Mutations are important because they do what?
(A) provide variation that can result in evolutionary change. (B) occur in response to environmental demands. (C) are always beneficial in the individuals affected by them. (D) usually provide an individual with increased reproductive rates.