The main difference between prokaryotic cells and eukaryotic cells is A. prokaryotic cells have more internal, membrane-bound compartments than eukaryotic cells. B. eukaryotic cells have membrane-bound subcellular compartments, called organelles, and prokaryotic cells do not. C. prokaryotic cells have linear DNA and eukaryotic cells have circular DNA. D. prokaryotic cells have a nucleus and eukaryotic cells do not. E. eukaryotic cells contain double-stranded DNA while prokaryotic cells do not

Which of the following monomers is NOT correctly matched with an appropriate corresponding polymer? A)amino acid—starch B)nucleotide—DNA C)monosaccharide—glycogen D)nucleotide—RNA E)all of these are correctly matched.

Glycogen is to animal cells as ________ is to plant cells. A. lipid B. cellulose C. starch D. protein E. sugar

______________ function in the collection, packaging, and distribution of molecules made in the cell.A) MitochondriaB) RibosomesC) Golgi bodiesD) PeroxisomesE) Vacuole

. ____ is a cell engulfing large solid materials, and ____ is a cell engulfing materials dissolved in solution. A. Endocytosis; exocytosisB. Exocytosis; endocytosisC. Phagocytosis; pinocytosisD. Pinocytosis; phagocytosis

To observe the three-dimensional structure of a cell the best type of microscopy would be A. fluorescence microscopy. B. standard light microscopy. C. scanning electron microscopy. D. differential-interference light microscopy. E. transmission electron microscopy.

Why is ATP important in living organisms?a. It is easily converted to starch for long-term storage.b. It can transfer some of its energy to other chemicals.c. It is an important structural component of cell membranes.d. Like all other nucleic acids, it stores hereditary information.e. Like RNA, it acts as a source code for the formation of proteins.

For which of the following organelles are the structure and function correctly described?A) Endoplasmic reticulum—a network of interconnected membranes forming sacs and canals that makes and packages protein molecules for secretionB) Ribosomes—membranous vesicles containing digestive enzymesC) Golgi apparatus—particles, composed of protein and RNA, which synthesize proteinsD) Mitochondrion—non-membranous structure that synthesizes proteins

Why does carbon form four covalent bonds? A)Because carbon has a high electronegativity .B)Because carbon needs four electrons to fill its outer shell. C)Because the most common isotope has four neutrons. D)Because carbon tends to give up four electrons to balance the charge of its protons. E)Because carbon has a low electronegativity.

 How is a polymer formed from multiple monomers?a. From the growth of the chain of carbon atomsb. By the removal of an —OH group and a hydrogen atomc. By the addition of an —OH group and a hydrogen atomd. Through hydrogen bonding