Chapter Questions
All cells have these three things in common:_______a. cytoplasm, DNA, and organelles with membranesb. a plasma membrane, DNA, and a nuclear envelopec. cytoplasm, DNA, and a plasma membraned. a cell wall, cytoplasm, and DNA
Every cell is descended from another cell. This idea is part of _______a. evolutionb. the theory of heredityc. the cell theoryd. cell biology
The surface-to-volume ratio _______a. does not apply to prokaryotic cellsb. constrains cell sizec. is part of the cell theory
Cell membranes consist mainly of _______ and _______a. lipids; carbohydratesb. phospholipids; proteinc. lipids;phospholipidsd. phospholipids; ECM
In a lipid bilayer, the ______________ of all the lipid molecules are sandwiched between all of the _______ a. hydrophilic tails; hydrophobic headsb. hydrophilic heads; hydrophilic tailsc. hydrophobic tails; hydrophilic headsd. hydrophobic heads; hydrophilic tails
What controls the passage of molecules into and out of the nucleus?a. endoplasmic reticulum, an extension of the nucleusb. nuclear pores, which consist of membrane proteinsc. nucleoli, in which ribosome subunits are maded. dynamically assembled microtubulese. tight junctions
Most of a membrane's diverse functions are carried out by _______Wa. proteinsb. phospholipidsc. nucleic acidsd. hormones
The main function of the endomembrane system is _______a. building and modifying proteins and lipidsb. isolating DNA from toxic substancesc. secreting extracellular matrix onto the cell surfaced. 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 membraneb. Golgi bodiesc. endoplasmic reticulumd. peroxisomes
Put the following structures in order according to the pathway of a secreted protein:a. plasma membraneb. Golgi bodiesc. endoplasmic reticulumd. post-Golgi vesicles
No animal cell has a _______a. plasma membraneb. flagellumc. lysosomed. cell wall
Which of the following organelles contains no DNA?Choose all that are correct.a. nucleusb. Golgi bodyc. mitochondriond. chloroplast
_______connect the cytoplasm of plant cells.a. Plasmodesmatab. Adhering junctionsc. Tight junctionsd. Adhesion proteinse. Chloroplastsf. Gap junctions
Match each cell component with its function.$$ \text { mitochondrion} \quad \quad\quad\quad\quad \text {a. connection} $$$$ \text { chloroplast} \quad \quad\quad\quad\quad \text {b. protective covering} $$$$ \text {ribosome} \quad \quad\quad\quad\quad \text {c. ATP production} $$$$ \text { nucleus} \quad \quad\quad\quad\quad \text {d. protects DNA} $$$$ \text {cell junction} \quad \quad\quad\quad\quad \text {e. protein synthesis} $$$$ \text {flagellum } \quad \quad\quad\quad\quad \text {f. photosynthesis} $$$$ \text { cuticle} \quad \quad\quad\quad\quad \text { g. movement } $$