Turner syndrome (XO) is a sex chromosome aneuploidy. Of the effects listed below, which one is not usually seen in this syndrome?
A) unusually short stature
B) infertility
C) skeletal abnormalities
D) unusually long limbs
D) unusually long limbs
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Which of the following are common causative agents of STIs?
a. Hepatitis A virus b. Streptococcus pyogenes c. Neisseria gonorrhoeae d. HIV e. Trichomonas f. Candida albicans g. Hepatitis B virus h. Shigella
The main function of the rough endoplasmic reticulum is the production of
A) mitochondria and proteins secreted by the cell. B) hydrogen peroxide and steroid hormones secreted by the cell. C) ribosomes and steroid hormones. D) membrane and proteins secreted by the cell.
Which of the following statements is TRUE of disinfectants?
A) They are effective in destroying endospores. B) They are used on living tissue. C) They are used for sterilization. D) They are used on inanimate surfaces. E) They are only effective for short periods of time (seconds to minutes).
If an egg cell contained EDTA, a chemical that binds calcium and magnesium, what effect would this have on reproduction?
A) The acrosomal reaction would be blocked. B) The fusion of sperm and egg nuclei would be blocked. C) The fast block to polyspermy would not occur. D) The fertilization envelope would not be formed. E) The zygote would not contain maternal and paternal chromosomes.