A mature walled ascus of an ascomycete usually contains
A. eight diploid nuclei.
B. eight haploid nuclei.
C. many multinucleate conidia.
D. an egg and a sperm.
E. a zygote.
B. eight haploid nuclei.
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Which of the following molecules coordinates the expression of nonadjacent genes?
A) leucine zippers B) response elements C) transcription factors D) coactivators E) control elements
A research group claims that they have discovered microscopic fossilized embryos, including some at the blastula stage, but other researchers are skeptical. Finally, one student develops a technique for splitting the embryos in half to reveal the substructure. Cutting open the first blastocyst embryo, the student is very excited. “It is a blastula!" she shouts,"Look, you can see the ____________________ inside!”
A. granulosa cells B. hollow blastocoel C. archenteron D. neural tube 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 a blastula? 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?
The circulatory and lymphatic systems both serve major transport functions in the body, with contents of the lymphatic system essentially derived from the circulatory system
Indicate whether the statement is true or false
Which list of muscle components is in the correct order from smallest to largest?
A) muscle, sarcomeres, myofibrils, muscle fibers B) sarcomeres, myofibrils, muscle fibers, muscle C) sarcomeres, myofibrils, muscle, muscle fibers D) myofibrils, muscle, sarcomeres, muscle fibers