Prior to mitosis and after S phase, each chromosome of a eukaryotic cell consists of a pair of identical structures called

A) chromatin.
B) sister chromosomes.
C) nucleoli.
D) sister chromatids.


Answer: D

Biology & Microbiology

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The corolla is made up of ____

a. sepals b. petals

c. carpels d. stamens e. anthers

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________ proteins stabilize the arrangement of the chlorophyll within a photosystem and modify the absorption spectra of specific chlorophyll molecules

Fill in the blank with correct word.

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A man presents to the physician's office complaining of irritation in the genital area. Examination reveals a bright red rash with raised pustules with clear fluid. Upon questioning, the man reports he has recently been sexually active. What is the most

likely diagnosis based upon the appearance of the genital lesions? A) genital warts caused by HPV B) chlamydia C) gonorrhea D) genital herpes caused by HSV-2 E) syphilis

Biology & Microbiology

Why can't we use modern atmospheric conditions to infer the origin of life?

What will be an ideal response?

Biology & Microbiology