The ion that increases its intracellular concentration in order to trigger the release of neurotransmitters is _____.
A. Mg2+
B. K+
C. Ca2+
D. Cl-
E. HCO3-
C. Ca2+
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Unlike the leading strand, ______________ are made in replicating the lagging strand of DNA.
A. primers B. nucleases C. Okazaki fragments D. pyrophosphates E. DNA polymerases
Answer the following statements true (T) or false (F)
1. Prokaryotic genomes often contain a circular chromosome with hundreds of thousands of genes and highly repetitive DNA. 2. In humans, the genome is made up of 22 autosomes and 1 sex chromosome. 3. Some transposable elements contain a central region that encodes transposase, an enzyme that facilitates the actual transposition. 4. If a researcher determines that 25% of a liver cell's total genome encodes genes for metabolic enzymes, then he/she can conclude that metabolic enzymes make up 25% of the total protein composition of the cell. 5. A nerve cell and a muscle cell taken from the same individual would have two different sets of genes.
Within chloroplasts, the fluid-like matrix in which the Calvin cycle occurs is called ________.
A. stroma B. mesophyll C. thylakoids D. grana
What combination of the characteristics of Huntington's disease puzzled JBS Haldane?
What will be an ideal response?