The bulk of an herbaceous eudicot root consists of loosely arranged parenchyma cells in the:a
endodermis.
b. pericycle.
c. epidermis.
d. cortex.
e. periderm.
D
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In mammals, urine drains out of the ____ into a collecting duct
a. distal convoluted tubule b. Bowman's capsule c. descending segment of the loop of Henle d. proximal convoluted tubule e. ascending segment of the loop of Henle
Which structure is the site of the synthesis of proteins that may be exported from the cell?
a. rough ER b. lysosomes c. plasmodesmata d. Golgi vesicles e. tight junctions
It has been found that a particular "+ –" combination of frameshift mutations in gene X gives a wild-type phenotype, whereas a "– +" combination gives a mutant phenotype, even though the sites of insertion/deletion are the same
How might these results be explained?
Which membranous organelle, present in both animal and plant cells, is primarily used for storage?
A. the vacuole B. the Golgi apparatus C. the lysosome D. the mitochondrion