The formation of carbohydrates from carbon dioxide and water occurs in the portion of Figure 4-4 labeled:
a. A
b. B
c. C
d. D
e. E
A
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A scientist is trying to coax stem cells to differentiate into muscle to use as a therapy for muscular dystrophy. He looks at his Petri dish and is excited to see the cells contracting! The cells appear striated and multinucleate. What type of muscle are they?
A. cardiac muscle B. smooth muscle C. involuntary muscle D. skeletal muscle Clarify Question What is the key concept addressed by the question? What type of thinking is required?8 Gather Content What do you already know about muscle tissue? What other information is related to the question? Choose Answer 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 result from sperm penetration? (Check all that apply.)
_____ eggs complete meiosis _____ haploid nucleus of egg undergoes final mitotic division _____ movement of egg cytoplasm _____ outer pigmented cap of egg cytoplasm rotates toward point of entry _____ sharp increase in protein synthesis
Karyotype analysis
a. is a means of detecting and reducing mutagenic agents. b. is a surgical technique that separates chromosomes that have failed to segregate properly during meiosis II. c. can be used in prenatal diagnosis to detect chromosomal mutations and genetic disorders in embryos. d. replaces defective alleles with normal ones. e. is used in DNA analysis for paternity.
What is the tropism that describes the movement of a plant towards light?
A. negative gravitropism B. positive gravitropism C. positive phototropism D. negative phototropism E. thigmotropism