The maintenance of a constant environment in a cell is called __________. 

A. active transport
B. homeostasis
C. gene expression
D. translation


B. homeostasis

Biology & Microbiology

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In mice, the gene for insulin-like growth factor is imprinted. During embryonic development, only the paternal allele for insulin-like growth factor is expressed. This means

A. that the paternal allele is imprinted. B. that the maternal allele is imprinted. C. that the paternal allele is hyper-methylated. D. that the paternal allele is mutated. E. that the maternal allele is expressed.

Biology & Microbiology

“Prebiotic soup” refers to ____

a. the interior contents of protocells b. the cytoplasm of early prokaryotic cells c. the mix of gases in the atmosphere that gave rise to the first organic molecules d. the polymerized slime coating ancient clay particles e. the accumulation of organic molecules that formed in the oceans before there was life on Earth

Biology & Microbiology

What tissue in vascular plants would be used to move sugars from roots to the stems and leaves, and

from leaves to roots and stems?

a. sclerenchyma b. phloem c. collenchyma d. parenchyma e. xylem

Biology & Microbiology

________ cells have axons that can transmit nerve impulses in addition to being able to secrete hormones like endocrine cells

Fill in the blank(s) with correct word

Biology & Microbiology