In Drosophila, the hunchback gene encodes a protein (HB) that is required in the correct concentrations for proper segmentation of the embryo. In the zygote and embryo, the expression of hunchback is stimulated by high concentrations of Bicoid protein. You manipulate a Drosophila embryo to have high Bicoid concentrations throughout. Which of the following would occur?
A. The HB protein would be produced throughout the entire embryo.
B. The HB protein would not be produced at all.
C. The HB protein would be produced throughout the entire embryo and segmentation would not occur correctly.
D. The HB protein would not be produced at all and segmentation would not occur correctly.
E. Segmentation would not occur correctly.
Answer: C
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If 16% of the nucleotides in one strand of a DNA molecule contain the base G, what percent of the nucleotides on the complementary strand will also contain the base G?
A. 16% B. 8% C. 34% D. 32% E. Impossible to determine from the information given. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain? Gather Content · What do you already know about base pairing in DNA? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Cell walls of bacteria (domain Bacteria) usually consist of _____________, a network of polysaccharide molecules connected by polypeptide cross-links.
Fill in the blank(s) with the appropriate word(s).
The sepals of a flower make up the ____
a. receptacle b. corolla c. carpel d. calyx e. filament
The only way that cells can produce ATP in the absence of oxygen is through the process of ________
Fill in the blank(s) with correct word