Which of the following is also known as a dehydration reaction?
A. condensation
B. hydrolysis
C. synthesis
D. oxidation
E. decomposition
Answer: A
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A DNA molecule has four "ends"— two on each of the two polynucleotide strands. How many of
these ends are phosphate groups? Fill in the blank(s) with the appropriate word(s).
A positively charged sodium ion
a. would get stuck in the hydrophobic core of the membrane. b. freely diffuses directly across the cell membrane. c. would require the use of integral protein channels to pass through a cell membrane.
A selection experiment you are doing requires certain conditions in order for evolutionary change to occur. What conditions would cause this change? (Select all that apply.)A) variation between individuals in a populationB) genetic variations being heritableC) no variation existing between individuals in the next generationD) survival rate of offspring varying due to parental genetic differences
What will be an ideal response?
Which statement is true regarding endospores and sporulation?
a. The three steps of sporulation are activation, germination, and outgrowth. b. Endospores readily take up stain and thus are often seen as stained circles within vegetative cells. c. Calcium complexed with dipicolinic acid helps to dehydrate a developing endospore. d. Sporulation is a type of reproduction and is an alternative to binary fission.