What is the basic unit of life and the building block of tissues and organs?

a) atom
b) organelle
c) cell
d) dna


Answer: c) cell

Biology & Microbiology

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Birds, snakes, lizards, turtles, and crocodiles are all thought to share a common ancestor and several homologous traits. Assuming that this is true, these groups of animals and their common ancestor would represent  

A.  a polyphyletic group. B.  a monophyletic group. C.  homoplastic convergence. D.  an outgroup. E.  a species cluster. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean?   Gather Content · What do you already know about monophyly?   Consider Possibilities · Consider the different answer options. Which can you rule out?   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

Which of the following is not an example of an abiotic factor?

A) Temperature B) Energy C) Bacteria D) Nutrients

Biology & Microbiology

Which of the following is NOT a domain?

A. Protista. B. Archaea. C. Bacteria. D. Eukarya. E. Both Bacteria and Protista.

Biology & Microbiology

ALL of the following processes are anaerobic respirations EXCEPT

a. methanotrophy. b. denitrification. c. sulfate reduction. d. acetogenesis.

Biology & Microbiology