Which hormone prevents the endometrium from breaking down until the placenta secretes enough
hormones to maintain it?
a. hGH
b. FSH
c. estrogen
d. hCG
e. ADH
D
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Myxobacteria lyse bacteria and yeasts by secretion of digestive enzymes. They then use the resulting peptides and amino acids as a source of which of the following?
A. Phosphate B. Iron C. Nitrogen D. All of the choices are correct.
Answer the following statements true (T) or false (F)
1. A bacterial cell would swell and burst if placed in an extremely hypertonic solution. 2. Pasteurization is a method of sterilizing liquids. 3. Archaeans that live in or near hydrothermal vents at the bottom of the ocean are halophilic, barophilic, and thermophilic. 4. Lyophilization is an excellent method of killing microorganisms. 5. Antiseptic technique is a type of aseptic technique.
What is the basic problem with artificial
cloning of adult cells?
a. adult cells are already differentiated b. adult cells do not divide c. adult cells have too many mutations d. adult cells only have a subset of the original embryonic DNA e. more than one of these is a basic problem with the artificial cloning of adult cells
Describe three distinct genetic regions of the human Y chromosome
What will be an ideal response?