The enzyme catalase functions in the breakdown of hydrogen peroxide, a toxic by-product of fatty acid digestion. In
which cellular organelle is catalase found?
a. Golgi body
b. peroxisome
c. lysosome
d. ribosome
e. mitochondrion
ANSWER: b
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Peptidoglycan forms sheets that stiffen the cell walls of bacteria. How is the formation of sheets possible?
A) The polysaccharides in peptidoglycan are highly branched and form a network. B) The glycosidic linkages between monosaccharides in peptidoglycan are extraordinarily strong. C) Individual strands are joined by peptide bonds, a type of covalent bond. D) The polysaccharides in peptidoglycan form helical structures, as in cellulose.
Which habitat types in the figure above cover the largest area?
A) tropical wet forest plus the ocean neritic zone B) open ocean C) algal beds and reefs plus the ocean neritic zone D) wetlands plus the ocean neritic zone
If a cell has the same concentration of dissolved molecules as its outside environment, the cell's condition is referred to as being
A. isotonic. B. hypertonic. C. hypotonic. D. hydrophobic. E. hydrophilic.
You are working on a research project that involves a mutational analysis of the light harvesting complex Lhca1, which is an important light harvesting complex found in plants. Your labmate asks where this complex is located. You say it is in the.
A. outer chloroplast membrane B. inner chloroplast membrane C. thylakoid membrane D. stroma E. matrix Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about how light harvesting occurs in photo systems during photosynthesis? What other information is related to the question? Choose Answer Do you have all the information needed to provide an explanation? 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?