Which of these categories of classification contains organisms that are most closely related?

A. family
B. class
C. order
D. genus


Ans: D. genus

Biology & Microbiology

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If you are tossing a six-sided die, what is the probability of getting either a 1 or a 2 on your first toss AND a 1 or a 2 on your second toss?  

A.  1/18 B.  1/9 C.  1/6 D.  1/3 E.  2/3 Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain? Gather Content · What do you already know about probability? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?

Biology & Microbiology

In multicellular organisms, the mechanism most directly responsible for directing development and maintaining homeostasis is gene 

A.  mutation. B. duplication. C. deletion. D. regulation.  

Biology & Microbiology

Reported toxins' effects on marine phytoplankton include all of the following except

a. increased sinking rate. b. inhibited photosynthesis. c. reduced growth. d. reduced cell division. e. tumors.

Biology & Microbiology

What term describes a species with a disproportionately large effect on a community relative to its abundance?

a. pioneer b. indicator c. keystone d. exotic e. invasive

Biology & Microbiology