________ showed that biogenesis is responsible for the propagation of life
A) Louis Pasteur
B) Robert Hooke
C) Carl Linnaeus
D) Joseph Lister
E) Antonie van Leeuwenhoek
Answer: A
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The use of selected culture media and incubation conditions to isolate microorganisms from samples is known as a(n)
A) differential culture. B) selective culture. C) enrichment culture. D) sensitive culture.
Azolla filiculoides is a small aquatic fern that is typically 1-2 cm tall. How would a botanist distinguish it from a bryophyte?
A. It produces seeds. B. It has xylem tissue. C. It has a gametophyte. D. It has chloroplasts. 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 ferns and bryophytes? What other information is related to the question? Given what you now know, what information 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 statements about DNA structure is true?
a. The nucleic acid strands in a DNA molecule are oriented antiparallel to each other. b. The arrangement of the sugar-phosphate groups determines the genetic code. c. Phosphodiester bonds form between the phosphate group of one nucleotide and the 5' carbon of the adjacent nucleotide. d. DNA is always synthesized in the 3' to 5' direction.
Which structure contains the angiosperm egg?
A. style B. stigma C. anther D. embryo sac E. endosperm