Which feature is found in prokaryotic cells?
A) nucleus
B) endoplasmic reticulum
C) Golgi apparatus
D) cell wall
D
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The type of mutation that alters the nucleotide sequence of a gene but does not alter the amino acid sequence of the protein produced from that gene is called ________ mutation.
A. frameshift B. missense C. silent D. nonsense
One generalization of the cell theory is that
a. all cells have a nucleus. b. all cells have cell walls. c. the cell is the smallest unit that displays the properties of life. d. cells can arise from nonliving matter. e. all cells are microscopic
Which of the following is in the correct sequence?
a. the origin of self-replicating molecules -> the abiotic synthesis of small molecules -> the abiotic synthesis of polymers -> packaging of molecules into protobionts b. packaging of molecules into protobionts -> the abiotic synthesis of small molecules -> the abiotic synthesis of polymers -> the origin of self-replicating molecules c. the abiotic synthesis of polymers -> the abiotic synthesis of small molecules -> packaging of molecules into protobionts -> the origin of self-replicating molecules d. the abiotic synthesis of small molecules -> the abiotic synthesis of polymers -> packaging of molecules into protobionts -> the origin of self-replicating molecules
Phage typing is useful for identifying bacteria because of the specificity of (antibodies/bacteriophages/PCR) for unique bacterial structures.
Fill in the blank(s) with the appropriate word(s).