If you are hiking through the desert for several days, one would pack which of the following to ensure proper hydration?
A) a drink with a combination of water and electrolytes
B) caffeinated beverages
C) bottled water kept at room temperature
D) bottled water that had been frozen to ensure that it would be as cold as possible
Answer: A
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What is the link between colored pigment molecules and other organic molecules?
Many traits of organisms, such as body form and color, are controlled by specific proteins, in turn controlled by the DNA genetic sequence of nucleotides. The genetic control of color, as in aphids, does not usually shift during the life of an organism. Researchers found that some specific aphid populations shift from an original red coloration to a green coloration. Genetics could be a factor, if some programmed shift could be identified. Environmental conditions of the living and nonliving habitat could be a factor. Either way, the chemistry and observed changes of pigment molecules in the aphids can be studied with the scientific method. A. All of the answer choices are correct. B. In the case of the aphids, the pigment molecules of bacteria are genetically passed on to the DNA of infected aphids. C. The DNA molecule genetic sequence regulates protein molecule function, which can change pigment structure that affects color. D. Pigment molecules are made up of all four of the other organic molecule groups. E. This one group of aphids can easily alter the pigment molecule structure by modifying its DNA nucleotide sequence and building new proteins.
Which portion of the renal tubule empties directly into the collecting duct?
a. Bowman's capsule b. distal convoluted tubule c. proximal convoluted tubule d. descending loop of Henle e. ascending loop of Henle
A person who is unable to speak after a stroke has had damage to what part of the brain?
What will be an ideal response?
You digest DNA from the frog Xenopus laevis with the enzyme NotI that produces sticky DNA ends. You can ligate your DNA to (select all that apply)A) blunt AluI ends from Xenopus laevis.B) sticky NotI ends from Xenopus laevis.C) blunt AluI ends from bacteria.D) sticky NotI ends from bacteria.E) sticky EcoRI ends from Xenopus laevis.F) sticky EcoRI ends from bacteria.
What will be an ideal response?