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
c
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The release of insulin from pancreatic cells occurs by
A. endocytosis. B. pinocytosis. C. phagocytosis. D. exocytosis. E. receptor-mediated endocytosis.
Suppose that an organism has the same life strategy as a maple tree. When will the synaptonemal complex be observed?
a. only in a unicellular haploid phase b. in each generation c. only in a multicellular haploid phase d. only in alternating generations
One function of plants cells is to use light energy to make nutrients. Which structure enables plant cells to carry out this function?
A) cell wall B) nucleus C) chloroplasts D) cell membrane
Antibiotics are NOT effective against
A) fungi. B) bacteria. C) protists. D) viruses.