The perianth of a flower consists of:
A. the pistil and stamens
B. the petals and sepals
C. the peduncle and receptacle
D. the anthers and stigma
E. the style and ovary
B. the petals and sepals
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Antigens are _____
A) proteins found in the blood that cause foreign blood cells to clump B) proteins embedded in B cell membranes C) proteins that consist of two light and two heavy polypeptide chains D) foreign molecules that trigger an immune response E) proteins released during an inflammatory response
Why is it problematic to take antibiotics for viral diseases?
What will be an ideal response?
Which blood type is the universal donor?
a. A b. B c. AB d. O e. none of these
The sedimentary rock known as ________ stores carbon deposited by the shells of ocean animals
Fill in the blank(s) with correct word