Transcription factors activate or repress the transcription of specific genes by binding to regions of DNA that interact with the promoter region of a gene.
Indicate whether the statement is true or false.
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Question 2) There are twenty different molecules of tRNA.
Indicate whether the statement is true or false.
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Question 3) Free ribosomes differ from membrane-bound ribosomes in that free ribosomes specialize in synthesizing proteins for export (secretion) from the cell.
Indicate whether the statement is true or false.
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Question 4) A ribosome is composed of one molecule of RNA and several proteins.
Indicate whether the statement is true or false.
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Question 5) Ribosomes transcribe DNA into RNA.
Indicate whether the statement is true or false.
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Question 6) The promoter sequence of nucleotides in a gene is present on both strands of the DNA molecule, allowing transcription of both strands.
Indicate whether the statement is true or false.
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Question 7) Lysosomes are organelles specialized for breaking down intracellular debris or malfunctioning parts of cells.
Indicate whether the statement is true or false.
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Question 8) The special functions of plasma and organelle membranes depend primarily on the specific composition of the phospholipids of those membranes.
Indicate whether the statement is true or false.
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Question 9) Desmosomes are structures that permit direct communication between cells by allowing the cells to exchange small molecules in their cytoplasms.
Indicate whether the statement is true or false.
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Question 10) Chromosomes are composed mainly of DNA.
Indicate whether the statement is true or false.
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