The repeating sequence of cells dividing, growing, and dividing again is called

A) homologous differentiation. B) the cell cycle.
C) stem cell differentiation. D) fission.


B

Biology & Microbiology

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A cuboidal shaped cell with six sides is 1mm X 1mm X 1mm. What is the volume and the surface area of the cell?  

A.  1mm3 : 6mm2 B.  3mm3 : 3mm2 C.  1mm3 : 3mm2 D.  3mm3 : 1mm2 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 know about area and volume of a cube? How does it relate to the question? 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

Cellular pH is kept near a value of 7 because of

a. salts. b. buffers. c. acids. d. bases. e. water.

Biology & Microbiology

Transcription starts at a region of DNA called a(n)

a. sequencer. b. promoter. c. activator. d. terminator. e. transcriber.

Biology & Microbiology

Why do some scientists consider automixis sexual reproduction?

a. It results in only heterozygous gametes. b. It allows for crossing-over. c. It can turn back Muller's ratchet. d. It reshuffles variation that originated in a bisexually reproducing popula-tion. e. B and C.

Biology & Microbiology