Which high energy light wave length can penetrate sea water the deepest?
a. Blue
b. Green
c. Violet
d. Red
e. a, b, and c above
E
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The first informational molecule probably was ________
a. phospholipid b. RNA c. DNA d. protein
Crossing over is one of the most important
events in meiosis because
a. it produces new combinations of alleles on chromosomes. b. separation of homologous chromosomes occurs. c. separation of sister chromatids occurs. d. it results in the production of haploid gametes. e. it aligns homologous chromosomes at the center of the cell so that they can be separated in anaphase II
Which of the following statements about the similarities and difference between chemotherapy and radiation therapy as cancer treatments is INCORRECT?
a) In radiation therapy, the nearby tissue may be harmed, while in chemotherapy, the rate at which healthy cells divide may be reduced. b) Both chemotherapy and radiation therapy work by disrupting cell division. c) Both chemotherapy and radiation therapy have side-effects. d) The drugs used in chemotherapy circulate throughout the entire body, while radiation therapy directs high energy radiation only at the part of the body where the tumor is located. e) Radiation therapy has a significantly higher success rate than does chemotherapy.
Acanthamoeba infections are usually transmitted via insects
Indicate whether the statement is true or false