Third phase of mitosis; chromosomes are aligned at the metaphase plate.

What will be an ideal response?


metaphase

Biology & Microbiology

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Review Figure 19.15 below: The lactose operon is an example of negative regulation by a repressor whose function is modulated by an inducer

A. true B. false

Biology & Microbiology

Synthetic thyroxine taken orally in the form of pills

is the recommended treatment for a. hypothyroidism. b. goiters. c. hyperthyroidism. d. Graves’ disorder. e. acromegaly.

Biology & Microbiology

During male ejaculation, the internal urethral sphincter closes tightly to

A) prevent urine from leaking into the urethra. B) isolate the ureters from the urinary bladder. C) block movement of mucus from the bulbourethral gland into the ejaculatory duct. D) keep sperm from moving into the ductus deferens. E) allow seminal vesicle to transfer sperm to the epididymis.

Biology & Microbiology

Which of the following lack a nucleus and are structurally simple?

A. Eukaryotes B. Prokaryotes C. Fungi D. Algae E. Protists

Biology & Microbiology