Chapter 4

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

The surface-to-volume ratio _______ a. does not apply to prokaryotic cells b. constrains cell size c. is part of the cell theory

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

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

What controls the passage of molecules into and out of the nucleus? a. endoplasmic reticulum, an extension of the nucleus b. nuclear pores, which consist of membrane proteins c. nucleoli, in which ribosome subunits are made d. dynamically assembled microtubules e. tight junctions

Most of a membrane's diverse functions are carried out by _______W a. proteins b. phospholipids c. nucleic acids d. hormones

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

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. e. Some cell membranes do not consist of lipids.

Enzymes contained in _______ break down worn-out organelles, bacteria, and other particles. a. plasma membrane b. Golgi bodies 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. post-Golgi vesicles

No animal cell has a _______ a. plasma membrane b. flagellum c. lysosome d. cell wall

Which of the following organelles contains no DNA? Choose all that are correct. a. nucleus b. Golgi body c. mitochondrion d. chloroplast

_______connect the cytoplasm of plant cells. a. Plasmodesmata b. Adhering junctions c. Tight junctions d. Adhesion proteins e. Chloroplasts f. Gap junctions

Match each cell component with its function. $$ \text { mitochondrion} \quad \quad\quad\quad\quad \text {a. connection} $$ $$ \text { chloroplast} \quad \quad\quad\quad\quad \text {b. protective covering} $$ $$ \text {ribosome} \quad \quad\quad\quad\quad \text {c. ATP production} $$ $$ \text { nucleus} \quad \quad\quad\quad\quad \text {d. protects DNA} $$ $$ \text {cell junction} \quad \quad\quad\quad\quad \text {e. protein synthesis} $$ $$ \text {flagellum } \quad \quad\quad\quad\quad \text {f. photosynthesis} $$ $$ \text { cuticle} \quad \quad\quad\quad\quad \text { g. movement } $$