The DNA of a bacterial cell must be compacted about _______ fold to fit within the confines of the cell
A. 10
B. 100
C. 150
D. 1000
E. 1,000,000
D
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Answer the question using the accompanying figure. This figure illustrates ____ signaling
a. classical endocrine b. exocrine c. autocrine d. Paracrine e. neuroendocrine
At one time, the pituitary was known as the ‘master gland’. Explain why this name is both fitting and
misplaced. What will be an ideal response?
Rank the following one-base point mutations (from most likely to least likely) with respect to their likelihood of affecting the structure of the corresponding polypeptide
1. insertion mutation deep within an intron 2. substitution mutation at the third position of an exonic codon 3. substitution mutation at the second position of an exonic codon 4. deletion mutation within the first exon of the gene A) 1, 2, 3, 4 B) 4, 3, 2, 1 C) 2, 1, 4, 3 D) 3, 1, 4, 2
Through the study of mitochondrial disorders, scientists have suggested a link between the decline of mitochondrial function and aging. What process appears to be involved in this suspected phenomenon?
A) accumulation of sporadic mutations in the nuclear genome B) accumulation of mutations in the mtDNA C) recombination of mtDNA and nuclear DNA D) decline of mutations in the nuclear genome E) recombination among mtDNAs of different mitochondria