Cells divide because _______.
a) some single-celled species use cell division as a means of reproduction
b) an organism needs to increase its number of cells in order to grow
c) cells die and need to be replaced
d) all of the above are correct
Ans: d) all of the above are correct
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A true breeding line of green pod pea plants is crossed with a true-breeding line of yellow pod plants. All of their offspring have green pods. From this information, it can be stated that the green color is _____ to the yellow color
A. Recessive B. Dominant C. Subservient D. Blended E. None of the answers are correct
In order to have a positive charge, an atom must have ________
A) more protons than electrons B) more electrons than protons C) more neutrons than protons D) more protons than neutrons
During the first stage of cellular respiration, one six-carbon glucose molecule is converted to two three-carbon
A.) ATP B.) water C.) carbon dioxide D.) pyruvate
For the purposes of this question, assume that being Rh+ is a consequence of D and that Rh? individuals are dd. The ability to taste phenylthiocarbamide (PTC) is determined by the gene symbolized T (tt are nontasters). A female whose mother was Rh?
has the MN blood group, is Rh+ and a nontaster of PTC, and is married to a man who is MM, Rh?, and a nontaster. Assume that all the loci discussed in this problem are autosomal and independently assorting. Which of the following is NOT a possible genotype of the children? A) MMddtt B) MNDdtt C) MNDDtt D) MMDdtt E) MNddtt