Cell size is limited by _____
A) the number of proteins within the plasma membrane
B) the surface area of mitochondria in the cytoplasm
C) surface to volume ratios
D) the size of the endomembrane system
C
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A radula is a specialized feeding organ used to scrape material off of food for ingestion, much like a cheese grater scrapes shreds off of a block of cheese. Snails, which have this structure, are thus which kind of feeder?
A) suspension feeder B) fluid feeder C) deposit feeder D) mass feeder
Why is carbon so important in biology?
A) It is a common element on Earth. B) It has very little electronegativity, making it a good electron donor. C) It bonds to only a few other elements. D) It can form a variety of carbon skeletons and host functional groups.
Leaf characteristics are useful indicators of the trade-offs plants make to combat environmental constraints
Indicate whether the statement is true or false
Which of the following is not a target for immune complex deposition?
A. Joints B. Kidneys C. Blood vessels and skin D. Heart and lungs E. Brain