What were the results of DNA profiling on the remains of the last czar of Russia (Czar Nicholas Romanov II) and his
family?
a. The daughter, Anastasia, was not among the family members.
b. Both the son and one of the daughters were missing from the remains.
c. None of the remains were those of the czar or his family.
d. The czar himself was not among those whose remains were found.
e. The czar and all of his family were accounted for in the remain
e
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You decide to volunteer at a community garden and are assigned to tend six equally sized vegetable beds. Three of the beds contain only tomato plants, while the other three contain tomatoes as well as snow peas, bell peppers, cucumbers, okra, and broccoli. You work hard all summer and fall, tending the plants through insect attacks, diseases, and severe summer storms. You harvest vegetables every three days and start to notice a pattern. The mixed vegetable plots consistently produce 4 pecks (a unit of dry goods measurement) each at every harvest, while the tomato only plots produce between 1-6 pecks each at every harvest. The garden director notices the pattern as well, and knowing you are a biology student, she asks you for an explanation.
What concept or hypothesis do you cite in your response? A. The model of island biogeography B. The diversity-stability hypothesis C. The tolerance model D. The intermediate disturbance hypothesis E. The productivity hypothesis
Relative to a pH of 6, a pH of 4 has a ________
A) 200 times higher H+ concentration B) 100 times higher H+ concentration C) 20 times higher H+ concentration D) 100 times lower H+ concentration
The major way in which therapeutic cloning and reproductive cloning differ is that
a. reproductive cloning cannot in reality be accomplished, while therapeutic cloning can. b. therapeutic cloning seeks to provide cells and tissues for use in treatment of human diseases. d. reproductive cloning can only be done in plants, therapeutic cloning only in animals. e. reproductive cloning uses adult stem cells, therapeutic cloning uses embryonic stem cells. f. There is no difference: both processes seek to obtain a genetically pure individual.
The membrane component(s) primarily responsible for the structure and function of plasma membranes is/are
A. nucleic acids. B. glycolipids. C. phospholipids. D. cholesterol. E. glycosylated proteins.