Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
34 Cards in this Set
- Front
- Back
Which of the following is true of the nuclear envelope?
|
the outer portion of the membrane is continuous with the endoplasmic reticulum
|
|
The cellular organelle responsible for packaging secretions into vesicles is called:
|
golgi complex
|
|
Cell products that are to be secreted are processed and packaged into vesicles by the:
|
golgi complex
|
|
The plasma membrane is composed of a _____layer of phospholipids
|
double
|
|
the ___ends of the phospholipids face the core of the membrane
|
polar
|
|
the_____ends of the phospholipids face the interior of the cell (towards the cytoplasm)
|
nonpolar
|
|
The inner part of the membrane is
|
hydrophobic
|
|
The polar regions of the phospholipids are
|
hydrophilic
|
|
The proteins and phospholipids ____move laterally through the membrane
|
can
|
|
Phagocytosis Transport characteristics
|
bulk transport, amoeboid movement, pseudopods, performed by neurtophils and macrophages
|
|
Endocytosis Transport characteristics
|
bulk transport
pinocytosis receptor mediated cholesterol enters a cell |
|
Exocytosis Transport Characteristics
|
Involved in neurotransmitter release
increases the surface area of the cell membrane releases proteins produced in golgi complex |
|
Phagocytes are attracted by which of the following?
|
chemical products of microorganisms
|
|
In phagocytosis the digested contents are eliminated by
|
exocytosis
|
|
A lysosome
|
contains lysozyme and proteases which digest bacteria.
|
|
Complement factor C3b coats a bacterium and binds to C3b receptors on phagocytes, making the bacterium more susceptible to being phagocytized.
true or false |
true
|
|
A phagosome containing the engulfed bacteria combines with a lysosome containing enzymes to produce a phagolysosome.
true or false |
true
|
|
Toxins, such as cholera toxin, process through the Golgi complex and endoplasmic reticulum through a process called:
|
Retrograde Transport
|
|
Which of the following is a function of the smooth endoplasmic reticulum?
|
Both steroid hormone production and calcium ion storage.
|
|
How does phagocytosis differ from endocytosis?
|
phagocytosis uses pseudopods to surround and engulf material.
|
|
The plasma membrane contains both carbohydrates and proteins.
true or false |
true
|
|
The process by which cellular products are secreted into the external environment is ________.
|
exocytosis
|
|
A secondary lysosome:
|
contains partially digested remnants from other organelles and ingested organic material
|
|
Which characteristic describes the plasma membrane of a cell?
|
The cellular proteins can serve as antigens
|
|
Which of the following would most easily pass through the plasma membrane of a cell?
|
steroid hormones
|
|
what produces energy for the cell
|
mitochondria
|
|
proteins are produced in what?
|
the ribosomes
|
|
the lattice-work of mircofilaments and microtubules comprise the
|
cytoskeleton
|
|
is the cytoskeleton flexible or rigid?
|
flexible
|
|
Chromatin is threadlike material which:
|
makes up chromosomes
|
|
cell such as macrophages form___ to pull through the extracellular matrix
|
pseudopods
|
|
the process of ______involves engulfing organic matter
|
phagocytosis
|
|
after phagocytic cells engulf matter, the ingested particle fuses with a ____ to be broken down by enzymes
|
lysosome
|
|
immune cells such as neutrophils attack ____ to protect the body
|
bacteria
|