In which of the following kingdoms are fertilization and meiosis not part of the life cycle?
A. Animalia
B. Protista
C. Plantae
D. Fungi
E. Archaea
Answer: E
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During the biotransformation of a large molecular weight compound, two major products are formed. While one of the products is catabolized, the other compounds accumulation represses the biotransformation of the large compound
Which approach is MOST likely to artificially enhance the biotransformation beyond this point in a batch culture? A) addition of an isoenzyme for the biotransformation route to increase its transcription B) addition of inducer molecules into the medium to increase transcriptional repression C) inclusion of more of an intermediate compound in the catabolic pathway D) spike in additional activator proteins that control the transcription of this pathway
For water to vaporize
A. energy must be supplied. B. energy must be released. C. hydrogen bonds are broken. D. both energy must be supplied and hydrogen bonds broken. E. both energy must be released and hydrogen bonds broken.
You are a genetic counselor, and a couple comes to you with concerns that if they have a child
together it could have hemophilia. The woman has an X-linked recessive form of hemophilia, but the man does not. Which of the following would be a correct thing to tell them?
a. Any child that they produce will have a 50% chance of having hemophilia. b. All of their male offspring will have hemophilia, and each of their female offspring will have a 50% chance of having hemophilia. c. None of their offspring should have hemophilia, but all of their female offspring will be carriers for hemophilia. d. Each of their male offspring will have a 50% chance of having hemophilia, and while their female offspring should not have hemophilia they will each have a 50% chance of being carriers. e. All of their male offspring will have hemophilia, and while their female offspring should not have hemophilia, they will all be carriers.
Nondisjunction of chromosomes may result in
A) the loss of one homologous chromosome pair. B) the addition of one homologous chromosome pair. C) the addition of a single chromosome. D) the loss of a single chromosome. E) All of these