Which of the following represents a mechanism of genetic transfer in bacteria?
A. Transformation
B. Transduction
C. Conjugation
D. All of the answers are correct
D
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You are given a sample of plant tissue and asked to identify the type of tissue and its location in the plant. Using your microscope, you notice two distinct layers of cells. One layer contains cells that are tightly compacted together while the other layer has loosely arranged cells. The cells in both layers contain many chloroplasts. Based on this information, you determine the tissue is
A. mesophyll tissue from a leaf. B. ground tissue from a stem. C. vascular tissue from a leaf. D. mesophyll tissue from a stem. E. vascular tissue from a root. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about the shape, characteristics, and arrangement of plant cells? How does it relate to the question? 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?
Fertilization in mammals normally occurs in the
a. ovary. b. uterus. c. vagina. d. oviduct. e. follicle.
In a testcross, if all the offspring show the dominant phenotype, then the individual with the unknown genotype was Select one:
a. a clone of the other testcross individual. b. homozygous recessive. c. heterozygous recessive. d. homozygous dominant. e. heterozygous.
Wolves are predators of moose in a certain ecosystem. Which statement is true about the predator-prey relationship?
a) it represents competition between species b) it is highly effective at controlling populations of both species c) it is usually a cause of extinction of one of the species d) it contributes to exponential growth of the predator species