The antibody active in agglutination or clumping of antigens is that determine blood groups. This antipody is a pentamer and it is found in the blood and the lymph.

A) IgA
B) IgM
C) IgG
D) IgD


Answer: B) IgM

Biology & Microbiology

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The first, inner-most energy shell of an atom

A. can have a maximum of 8 electrons. B. can have a maximum of 2 electrons. C. is called the 2p orbital. D. is called the 1s orbital and can have a maximum of 8 electrons. E. is called the 2p orbital and can have a maximum of 2 electrons.

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What is the correct order of biome distribution starting at the lowest elevation and moving to higher elevations?

A. deciduous forest - montane coniferous forest - tropical forest - alpine tundra B. tropical forest - grasslands - montane coniferous forest - deciduous forest C. tropical forest - deciduous forest - desert - alpine tundra D. tropical forest - deciduous forest - montane coniferous forest - alpine tundra E. montane coniferous forest - alpine tundra - temperate deciduous forest - savanna

Biology & Microbiology

Cellular adaptive immunity is carried out by ________.

A) B cells B) T cells C) bone marrow D) neutrophils

Biology & Microbiology

Cocoa butter is a source of __________ fat.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology