Which of the following choices best describes the neural organization of a cnidarian?
a. both central and peripheral nervous systems
b. nerve net
c. cephalization with ganglia
d. central nervous system (CNS)
b
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Land dwelling insects do not have the ability to excrete ammonia so instead they will convert it into ________
a. urea b. urine c. plasma d. water e. uric acid
_____ corrects the genetic defect in an individual with a genetic disorder by _____
a. Enzyme replacement therapy; delivery of a normal gene to affected cells in the body b. PGD; removing affected cells from an early stage embryo c. Gene therapy; PGD d. Gene therapy; delivery of a normal gene to affected cells in the body e. Chorionic villus sampling; constructing karyotypes from affected cells
How do cells at the completion of meiosis compare with cells that are in prophase of meiosis I? They have _____
A) half the number of chromosomes and half the amount of DNA. B) the same number of chromosomes and half the amount of DNA. C) half the number of chromosomes and one-fourth the amount of DNA. D) half the amount of cytoplasm and twice the amount of DNA.
George is stuck out in the hot, dry desert without any water, and he is sweating a lot. Which of these components of the blood should decrease?
A) plasma B) red blood cells C) platelets D) glucose