Which of the following statements about inositol triphosphate is FALSE?
It is formed in the cytoplasm.
It is synthesized by a membrane-bound enzyme.
It is synthesized by the enzyme phosphatase.
It binds to and opens Ca2+ channels in the endoplasmic reticulum.
It is synthesized by the enzyme phosphatase.
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Which type of bond must be broken for water to vaporize?
A) ionic bonds B) both hydrogen bonds and ionic bonds C) polar covalent bonds D) hydrogen bonds E) both polar covalent bonds and hydrogen bonds
Disadvantageous recessive alleles are protected from natural selection due to ____
a. homozygosity b. diploidy c. genetic drift d. haploidy
e. adaptationThis figure illustrates the process of
a. conjugation. b. transformation. c. transduction. d. translocation. e. excystation.
The letter "B" in the above figure represents
a. sclerenchyma fibers. b. parenchyma. c. xylem. d. epidermis. e. phloem.