Which two STDs commonly occur together?
a. HPV infection and chlamydia
b. chlamydia and gonorrhea
c. gonorrhea and syphilis
d. trichomoniasis and genital herpes
e. trichomoniasis and syphilis
B
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Which of the following is a component of phloem?
A. Tracheids B. Sclerenchyma cells C. Epidermal cells D. Cork cambium E. Collenchyma cells
When testing donated blood for compatibility you would find a person with O type blood
A) has O type antigens on their red blood cells. B) will lack plasma antibodies to A and B type antigens. C) will lack A and B red blood cell antigens. D) lacks HLA and MHC antigens. E) will have anti-O antibodies in their plasma.
The use of bovine growth hormone (BGH) to increase milk yield in dairy cows is highly controversial. What other hormone is regularly added to milk, yet causes little controversy?
A. MSG B. Vitamin A C. Vitamin D D. Preservatives
Carbon dioxide is carried in the plasma as
A. carbonic acid. B. carbonic anhydrase. C. reduced hemoglobin. D. a gas, carbon dioxide. E. bicarbonate ions.