Infectious protein that is abnormally folded
What will be an ideal response?
prion
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When Mendel crossed true-breeding yellow seed plants with true-breeding green seed plants, the offspring were phenotypically:
A. yellow seed. B. green seed. C. a mixture of yellow and green seed. D. made up of a combination of yellow and green alleles.
Philodendron flowers pass electrons through a mitochondrial electron transport chain to generate heat. What step is bypassed in generating heat?
A. formation of a proton gradient B. transfer of electrons to oxygen C. excitation of electrons by sunlight D. donation of electrons to the electron transport chain E. release of electrons from water
Many studies of potentially useful new drugs involve the use of two groups of people: One group takes the drug and another group takes a placebo (like a sugar pill). Members of both groups do not know whether they are taking the drug or the placebo. What is the reason for designing these experiments this way?
What will be an ideal response?
Which of the following does not contain DNA in any cell type?
1.nucleus 2.cytoplasm 3.mitochondrion 4.none of the choices (all may contain DNA)