If you were to penetrate through the epidermal layer
of a root, you would next encounter the
a. xylem.
b. endodermis.
c. cortex.
d. phloem.
e. pericycle.
Answer: c
Biology & Microbiology
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In cancer cells, how are promoter regions silenced?
a. Histone acetylation makes DNA inaccessible. b. Repressors bind to the promoter region making it inaccessible to RNA polymerase. c. Methylation of cytosine DNA residues in CpG islands silences promoter regions. d. Promoters are excised by exonuclease.
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Bernoulli's principle
What will be an ideal response?
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Scientists have identified approximately ________ million species of organisms, but millions more are thought to exist
Fill in the blank(s) with correct word
Biology & Microbiology
Ligase enzymes are used to covalently bind together pieces of DNA
Indicate whether the statement is true or false
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