small openings where CO2 enters the leaf
What will be an ideal response?
Stomata
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In a lysosomal storage disease, the hydrolases of lysosomes are released from the cells, rather than being isolated into vesicles. What is one possible mechanism for this result?
A) A proton gradient within vesicles was not generated. B) The ER was unable to produce lysosomal vesicles. C) Lysosomal enzymes were not phosphorylated in the rER. D) There is a lack of mannose-6-phosphatase activity. E) There is a mutation in all hydrolase genes that results in loss of the signal peptide.
In conifers, meiosis of diploid cells in an ovule produces ____
a. microspores b. pollen sacs c. pollination droplets d. pollen grains e. megaspores
A nucleated, green cell that moves by means of flagella is a(n)
A) Alga. B) Bacterium. C) Fungus. D) Helminth. E) Virus.
What are the termination codons of translation and how do they mediate termination?
What will be an ideal response?