All cells have these three things in common.
cytoplasm, DNA, and a plasma membrane
Unlike eukaryotic cells, prokaryotic cells lack this structure _________________.
have no nucleus.
Every cell is descended from another cell. This idea is part of ____________.
The surface-to-volume ratio ________________.
a. does not apply to prokaryotic cells.
b. is part of cell theory
c. constrains cell size
d. b and c.
True of false? Some protists start out life with no nucleus.
Cell membranes consist mainly of _______ and _______________.
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. Most membrane functions are carried out by phospholipids.
In a lipid bilayer, the ______________ of all the lipid molecules are sandwiched between all of the _______________.
hydrophobic tails, hydrophilic heads.
The main fuction 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.
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
c, b, d, a.
No animal cell has a _______________.
__________________________ connect the cytoplasm of plant cells.
Which of the folliwng organelles contains no DNA?
b. golgi body
ATP production starts in this cell structure.
photosynthesis starts in this cell structure.
Protein synthesis starts in this cell structure.
This cell strucutre protects DNA.
The connection part of the cell structure.
This cell structure aids in movement of the cell.
This cell structure acts as a protective covering
A relationship in which the volume of an object increases with the cube of the diameter, and the surface area increases with the square.
Plasma membrane protein that fastens cells together in animal tissues
Membrane protein that triggers a change in cell activity in response to a stimulus such as binding a certain substance.
Protein that moves specific ions or molecules across a membrane.