________ pulls water through a plant
A) Transpiration
B) Photosynthesis
C) Pressure flow
D) Adhesion
Answer: A
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The Nef protein helps HIV evade the adaptive immune system by____
a. destroying cytotoxic T cells b. destroying class I MHC proteins present on the surface of infected cells c. destroying class I MHC proteins in the cytoplasm d. binding to class I MHC proteins at the cell surface, thereby blocking their availability to cytotoxic T cells e. binding to class I MHC proteins and preventing their transport to the cell surface
Humans cultivate rice, wheat, rye, oats, and barley for their nutritious seeds. What part of the seed is traditionally used in flour for baking?
a. seed coat b. sporophyte c. endosperm d. embryo e. fruit
________ are the long thin cells of skeletal muscles.
a. Myofibrils b. Bursa c. Sarcomeres d. Fibers e. Tendons.
Which of the following are the most abundant leukocytes in blood, so they are often the first responders at a site of infection?
A. Macrophage B. Neutrophils C. Basophil D. Cytokines E. Dendritic cell