Answer the following statements true (T) or false (F)
1.In bryophytes, the sporophyte is conspicuous or dominant.
2.A mushroom is a structure that is attached to a much larger growth form of the organism.
3.Molecular evidence places fungi closer to plants than to animals.
4.Molecular evidence places fungi closer to animals than to plants.
5.A yeast is a multicellular fungus.
1.FALSE
2.TRUE
3.FALSE
4.TRUE
5.FALSE
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Answer the following statements true (T) or false (F)
1. Damage to the seminal vesicles would prevent sperm from becoming motile. 2. Erectile dysfunction can be treated by drugs that increase levels of nitric oxide. 3. FSH stimulates the activity of Leydig cells and LH stimulates the activity of Sertoli cells. 4. A human female has the largest number of primary oocytes at the onset of puberty. 5. FSH secreted by the pituitary stimulates fluid secretion into the antrum of the follicle.
In autosomal dominant inheritance, ____
a. the trait often skips generations b. about one-fourth of the progeny in a pedigree will show the trait c. two affected individuals may have unaffected children d. males are more affected than females e. the aa phenotype will be affected
Which of these statements is false concerning
covalent bonds? a. Atoms share electrons. b. Molecules may possess many covalent bonds. c. Water contains polar covalent bonds. d. Covalent bonds may be “double bonds.” e. In polar covalent bonds, electrons are shared equally.
The HIV virion attaches to ________ on the surface of lymphocytes
A) IgG B) MHC II C) IL-2R D) CD4 E) CD3