Some proteins are commonly synthesized by ribosomes in association with the rough endoplasmic reticulum. Ultimately, where will these proteins be found? ()
A. cytosolic ribosomes, lysosomes, mitochondria, and cloroplasts;
B. integral proteins of the plasma membrane, lysosomal proteins, proteins involved in the processing of proteins within the endoplasmic reticulum;
C. ribosomal proteins, lysosomes, secretion;
D. proteins bound for organelles (mitochondria and chloroplasts) and proteins of cytosolic ribosomes
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Amino acid chains built by the ribosome in the RER then move to the ()
A. Golgi apparatus
B. lysosome
C. cytoplasm
D. mitochondria
The Golgi bodies are best described as ()
A. a net work of tubules
B. hundreds of thousands of tiny structures
C. stacks of membranous pouches
D. the cell's "brain"
Enzymes embedded in the membrane of the smooth ER ()
A. synthesize lipids
B. may be used for detoxification
C. synthesize carbohydrates
D. all of the above
The power house of a cell is ____. ()
A. Chloroplast
B. nucleolus
C. mitochondrion
D. vacuole
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