Nitrification of ammonia occurs when ammonia is first converted to nitrite and then is converted to nitrate by the nitrogen-fixing bacteria.
Answer the following statement true (T) or false (F)
False
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Which portion of mRNA protects the strand and serves as a ribosome attachment site?
a. promoter b. nucleotide cap c. codon d. transcript e. polymerase
When the genome of a particular species is said to include 20,000 protein-coding regions, what does this imply?
A. Any other regions are "junk" DNA. B. There are also genes for RNAs other than mRNA. C. Each gene codes for one protein. D. The species is highly evolved. E. There are 20,000 genes.
In sweet peas, genes C and P are necessary for colored flowers. In the absence of either (__ pp or
cc __), or both (cc pp), the flowers are white. Give the probable genotype of a plant with colored flowers and a plant with white flowers that produced 38 plants with colored flowers and 42 plants with white flowers. What will be an ideal response?
Cells that produce antibodies and provide future immunity against similar pathogens are
A) mast cells. B) natural killer cells. C) T cells. D) dendritic cells. E) B cells.