Chapter 3

Every cell is descended from another cell. This idea is called_______. a. evolution b. the theory of relativity c. the cell theory d. cell biology

True or false? Some protists are prokaryotes.

Cell membranes consist mainly of a_______. a. carbohydrate bilayer and proteins b. protein bilayer and phospholipids c. lipid bilayer and proteins

Unlike eukaryotic cells, prokaryotic cells _____. a. have no plasma membrane b. have RNA but not DNA c. have no nucleus d. a and \(c\)

In a lipid bilayer, ______ of all the lipid molecules are sandwiched between all the______. a. hydrophilic tails; hydrophobic heads b. hydrophilic heads; hydrophilic tails c. hydrophobic tails; hydrophilic heads d. hydrophobic heads; hydrophilic tails

Enzymes contained in ______ break down worn-out organelles, bacteria, and other particles.

Put the following structures in order according to the pathway of a secreted protein: a. plasma membrane b. Golgi bodies c. endoplasmic reticulum d. post-Golgi vesicles

Is this statement true or false? The plasma membrane is the outermost component of all cells. Explain your answer.

Most membrane functions are carried out by ______. a. proteins b. phospholipids c. nucleic acids d. hormones

No animal cell has a ______. a. plasma membrane b. flagellum c. nucleic acids d. hormones

_______ connect the cytoplasm of plant cells. a. Plasmodesmata b. Adhering junctions c. Tight junctions d. a and b

Match each cell component with its function. ______mitochondrion\(\quad\)a. protein synthesis ______chloroplast\(\quad\)b. associates with ribosomes ______ribosome\(\quad\)c. ATP production ______smooth ER\(\quad\)d. sorts and ships ______Golgi body\(\quad\)e. assembles lipids; other tasks ______rough ER\(\quad\)f. photosynthesis