How does gene expression differ in muscle and nerve cells?
What will be an ideal response?
Answer: muscle cells and nerve cells express different subsets of the same genes
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Which microorganism species is most well-adapted to life on the skin?
A. Malassezia B. Staphylococcus epidermidis C. Streptococcus pyogenes D. Corynebacterium diphtheriae E. Candida albicans
Proteins are composed of subunits called ____ linked together by chemical bonds
a. nucleotides b. polynucleotides c. mRNAs d. amino acids
e. proteasomesThe DNA sequence capable of pairing with 5' CGATTAGT 3' is:
A. 3' GCTAATCA 5'. B. 5' CGATTAGT 3'. C. 3' CGATTAGT 5'. D. 5' GCTAATCA 3'.
Fossils of Cooksonia represent the oldest known fossils of vascular plants. Such fossils date to about
a. 1.5 billion years ago. b. 425 million years ago. c. 250 million years ago. d. 125 million years ago. e. 17 million years ago.