When bacteria appear in tissues, a type of large cell engulfs and destroys them. Which process are these cells using to engulf the bacteria?
A) exocytosis
B) active transport
C) pinocytosis
D) phagocytosis
D
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Farmers often practice crop rotation to help enrich agricultural fields. Why are beans and other legumes often used in the rotations?
A. Beans fix nitrogen. B. Bacteria in legume root nodules are nitrifiers. C. Legumes enrich the soil by forming heterocysts. D. Legumes remove toxins from the soil. E. Less carbon dioxide. 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 nutrient cycling? How does it relate to the question? · 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?
Which of the following is an exploited product of lactate fermentation?
a. butter b. beer c. yogurt d. ice cream e. loaf of breadDuring fermentation, the immediate fate of the electrons in NADH is that they:a. are transferred to the electron transport chain. b. are transferred to an organic molecule. c. are transferred to O2. d. are used to make CO2. e. are used to form H2O.
Birds are classified as
A. reptiles. B. mammals. C. amphibians. D. fishes. E. invertebrate chordates.
The cell walls of bacteria are a copolymer of _______ and _______.
a. proteins; lipids b. proteins; polysaccharides c. polysaccharides; peptides d. cellulose; lignin