Cytotoxic T cells bind to MHC ________ and ________ the target cell
a. I / kill
b. I / signal
c. 8 / kill
d. 8 / signal
Answer: A
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A plant performing photosynthesis will produce ____ and consume _____.
A. water, carbon dioxide B. oxygen, water C. carbon dioxide, oxygen D. oxygen, carbon dioxide E. carbon dioxide, water
Genotype Qq produces 10 offspring per year. Genotype QQ has a fitness value of 0.4 and genotype qq has a fitness value of 0.2. How many offspring does genotype qq produce each year?
A. 4 B. 1 C. 6 D. 2 E. 8
From the outside to the inside, which is the
correct order of tissues in a eudicot root?
a. epidermis>>cortex>>endodermis>>vascular tissue b. epidermis>>endodermis>>vascular tissue>>cortex c. endodermis>>cortex>>epidermis>>vascular tissue d. epidermis>>vascular tissue>>endodermis>>cortex e. endodermis>>epidermis>>cortex>>vascular tissue
These contain enzymes that digest various substances
a. mitochondria b. Golgi bodies c. nuclei d. ribosomes e. lysosomes