Chapter 3

Despite the diversity of cell type and function, all cells have these three things in common: a. cytoplasm, DNA, and organelles with membranes b. a plasma membrane, DNA, and a nuclear envelope c. cytoplasm, DNA, and a plasma membrane d. a cell wall, cytoplasm, and DNA

Every cell is descended from another cell. This idea is part of _____ . a. evolution b. the theory of heredity c. the cell theory d. cell biology

True or false? Some protists start out life with no nucleus.

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

Cell membranes consist mainly of _____ and _____. a. lipids; carbohydrates b. phospholipids; proteins c. lipids; carbohydrates d. phospholipids; ECM

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

Which of the following statements is correct? a. Ribosomes are only found in bacteria and archaea. b. Some animal cells are prokaryotic. c. Only eukaryotic cells have mitochondria. d. The plasma membrane is the outermost boundary of all cells.

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

The main function of the endomembrane system is _____. a. building and modifying proteins and lipids b. isolating DNA from toxic substances c. secreting extracellular matrix onto the cell surface d. producing ATP by aerobic respiration

Enzymes contained in _____ break down worn-out organelles,bacteria, and other particles. a. Iysosomes b. mitochondria c. endoplasmic reticulum d. peroxisomes

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

No animal cell has a _____. a. plasma membrane b. flagellum c. Iysosome d. cell wall

_____ connect the cytoplasm of plant cells. a. Plasmodesmata b. Adhering junctions a. Plasmodesmata b. Adhering junctions

Match each cell part with its main function. a. connects cells b. protective covering c. ATP production d. protects DNA e. protein synthesis f. maintains internal environment g. photosynthesis h. movement mitochondrion _____ chloroplast _____ ribosome _____ nucleus _____ cell junction _____ flagellum _____ cell membrane _____ cuticle _____