Integration of linear transforming DNA into the chromosome
A) is not required for the expression for the transformed genes.
B) is catalyzed by the RecA gene.
C) almost never occurs because restriction endonuclease will degrade the DNA before it is integrated.
D) only occurs in laboratory-based systems in artificial competent cells.
Answer: B
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Which of the following is TRUE of cell cleavage?
A. It involves consecutive cycles of cell division without cell growth. B. It forms a blastula. C. It is a rather slow event of embryonic development. D. It involves consecutive cycles of cell division without cell growth and forms a blastula. E. It is a rather slow event of embryonic development involving consecutive cycles of cell division.
The _____ is/are also known as the female prostate, and lie(s) between the wall of the urethra and the wall of the vagina.
A. Skene's gland B. seminiferous tubules C. Bartholin glands D. vas deferens
Why are latent viruses more likely to be transmitted to unsuspecting hosts than other types of viruses?
A) Because latent viruses have the ability to infect host cells better than most types of viruses. B) Latent viruses lack a capsid, which enables them to infect host cells more readily. C) Latent viruses reproduce slowly and steadily, allowing them to gain a foothold in the host. D) Latent viruses can undergo long periods of dormancy, enabling infected hosts to transmit them to others unknowingly.
All leukocytes have major roles in adaptive immunity.
Answer the following statement true (T) or false (F)