A diploid (2n) hyphal cell of Neurospora crassa will take the next step in its life cycle by ________
a. breaking open to disperse spores
b. undergoing meiosis to produce ascospores
c. undergoing mitosis to produce more 2n hyphal cells
d. finding a compatible strain and completing cytoplasmic fusion
b
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Which of the following statements accurately describes transcription by RNA polymerase?
A. RNA polymerase simultaneously transcribes both strands of DNA B. It is possible for one RNA polymerase to transcribe one strand of DNA in the 5’ to 3’ direction and another RNA polymerase to transcribe the complimentary strand of DNA in the 3’ to 5’ direction, producing two identical transcripts C. It is possible for one RNA polymerase to transcribe one strand of DNA in the 5’ to 3’ direction and another RNA polymerase to transcribe the complimentary strand of DNA in the 5’ to 3’ direction, producing two identical transcripts D. It is possible for one RNA polymerase to transcribe one strand of DNA in the 5’ to 3’ direction and another RNA polymerase to transcribe the complimentary strand of DNA in the 3’ to 5’ direction, producing two different transcripts E. It is possible for one RNA polymerase to transcribe one strand of DNA in the 5’ to 3’ direction and another RNA polymerase to transcribe the complimentary strand of DNA in the 5’ to 3’ direction, producing two different transcripts
Phagocyte attachment to a pathogen is enhanced by a process known as 109)
A) opsonization. B) leukocytosis. C) chemotaxis. D) margination. E) diapedesis.
In sponges, spicules are secreted by amoeboid cells
____________________ Indicate whether the statement is true or false.
Which of the following uses fluorescent-labeled antibodies?
A) agglutination B) complement fixation C) precipitation D) flow cytometry E) neutralization