Which statement is true of plasma membranes?
a. They have molecules on their surfaces that
identify them.
b. They are essentially impermeable.
c. They are basically static, non-changing
structures.
d. They are hydrophilic barriers between cells.
e. They function primarily through the activity of
their carbohydrates.
Answer: a
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An objective function is best described as:
A. a function ultimately wished to be maximized or minimized. B. the function relating the degree of support for a sufficient statistic. C. the function that determines the degree of freedom. D. the line associating how treatment and outcome variables move together.
Which of the following can occur by the process of meiosis but not mitosis?
A) Haploid cells fuse to form diploid cells. B) Haploid cells multiply into more haploid cells. C) Diploid cells form haploid cells. D) A diploid cell combines with a haploid cell.
If dogs, lizards, and deer all share the characteristic of having four legs but only dogs and deer share the characteristic of fur, which of the following would be considered the most closely related taxa?
A. Deer and dogs B. Dogs and lizards C. Lizards and deer
Which of the following is normal oral and nasopharyngeal flora but is involved in infective endocarditis in adults who have underlying congenital or rheumatic heart disease?
A. Haemophilus influenzae B. Haemophilus aphrophilus C. Haemophilus aegyptius D. Haemophilus ducreyi E. All of the choices are correct