Which of the following is the substance referred to as endotoxin
a. Hemolysis
b. coagulase
c. lipolysaccharide
d. collagenase
e. streptolysin
f. staphylokinase
c. lipolysaccharide
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If the allele frequency of a population of ducks
changes from one generation to the next, the population is undergoing
a. genetic equilibrium. b. upheaval. c. macroevolution. d. transition. e. microevolution
Eukaryotic cell membranes use many sterol molecules for construction, which contrasts with archaeal membranes that utilize ________.
Fill in the blank(s) with the appropriate word(s).
These are nonmotile parasites with special organelles for penetrating host tissue.
a. Apicomplexa b. ciliates c. dinoflagellates d. Microsporidia
In mammals, an egg fertilized by one sperm divides repeatedly (1-2-4-8-16-32-64, etc.). At the 64-cell stage, only three cells go on to become the embryo while 61 grow to become the fetal side of the placenta. In plants, fertilization likewise results in the development of an embryo and nourishing endosperm. However, how does this process differ from the mammal embryo and placenta?
What will be an ideal response?