Adaptations to extreme cold
What will be an ideal response?
insulation
hibernation
delayed ice formation
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If the out-of-Africa hypothesis of human origins is correct, which of the following best describes the pattern of hominin migration from Africa?
A. H. ergaster migrated 2 million years ago; H. sapiens migrated 200,000 years ago. B. H. sapiens migrated once 2 million years ago and again 200,000 years ago. C. H. ergaster migrated once 2 million years ago and again 200,000 years ago. D. H. neanderthalensis migrated once 1.3 million years ago and H. sapiens migrated 200,000 years ago. E. H. heidelbergensis migrated 2 million years ago and H. sapiens migrated 200,000 years ago.
Nerves of the parasympathetic system typically stimulate organs in response to stress
____________________ Indicate whether the statement is true or false.
Which of the following is a genetically modified organism?
A) an organism carrying a gene that was acquired by artificial means B) the first organism in which a particular mutation has appeared C) a cloned organism carrying two different alleles D) an organism that gestated in an artificial womb
NADH contains a high-energy bond that, when cleaved, donates a pair of electrons to the electron-transport chain. What are the immediate products of this bond cleavage?
(a) NAD+ + OH– (b) NAD+ + H– (c) NAD– + H+ (d) NAD + H