The second phase of glycolysis:
A. phosphorylates glucose.
B. cleaves the phosphorylated glucose and
rearranges the products.
C. generates ATP by substrate level
phosphorylation.
D. reduces NAD+ to NADH.
E. generates ATP by oxidative
phosphorylation.
B
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The promotion phase of carcinogenesis refers to
A) enhanced levels or exposures to a carcinogen B) metabolic oxidation by a P450 cytochrome C) normal cell progression to a precancerous cell D) precancerous cell progression to a cancerous cell E) the amount of DNA damage in a cell
After being exposed to high intensity light for some time, how will leaf chloroplasts be organized?
a. Chloroplasts will move toward internal tissues. b. Chloroplasts will move toward leaf surfaces. c. Chloroplasts will be distributed at either end of the cell. d. Chloroplasts will not be able to adjust positions. e. Chloroplasts will evenly distribute across the cell.
From a standpoint of natural selection, we see that the heterozygous advantage for ?A?S individuals is balanced by the disadvantage to those with SCD or the wild-type alleles (and no malaria protection)
The action of these conflicting trends produces an overall increase in the mutant allele until it reaches a state where the gain and loss of ?S alleles is equal. What is the term for this stable condition that allows mutant alleles to remain in a particular population? A) equilibrium frequency B) heterozygote fitness C) restriction fragment length polymorphism D) single nucleotide polymorphism E) balanced polymorphism
Compared with prokaryotic chromosomes, eukaryotic chromosomes are ________
A) large, linear, less densely packed with protein-coding genes, mainly organized in single-gene units with introns B) small, mainly organized in polygenic transcription units without introns C) large, mainly organized in polygenic transcription units without introns D) small, mainly organized in-single gene transcription units with introns E) large, mainly organized in single-gene transcription units without introns