Home
Flashcards
Preview
Cellular Anatomy
Home
Get App
Take Quiz
Create
What are centrioles?
Paired organelles that organize spindle microtubules that attach to chromosomes during mitosis
The area next to the nucleus that contains the centrioles is called the ____.
Centrosome
Centrioles are only visible in a cell when that cell is doing what?
Undergoing mitosis
What is referred to as the "colored stuff" fund in the nucleus & consisting of uncoiled chromosomes & assoc proteins?
Chromatin
What structure acts to suspend cellular organelles & contains enzymes that mediate cytosolic reactions such as glycolysis or fermentation?
Cytoplasm
What is the function of the cytoskeleton?
Provides structural support for the cell.
What 3 things compose the cytoskeleton?
Microtubules
Intermediate filaments
Microfilaments
T or F; The cytoskeleton is not generally visible under the light microscope
True
False
True
What occurs in the smooth ER?
Lipid synthesis
Detox of drugs and alcohol
What processes occur in the RER?
Synthesis of proteins destined for the cell membrane, lysosomes or secretion
In neurons the RER stains very dark & is called ___ substance.
Chromatophilic
The ___ ___ is a stack of flattened membranes.
Golgi Apparatus
Which organelle receives proteins fr the RER & then modifies, packages & sorts for delivery to other organelles or the plasma membrane?
Golgi Apparatus
Lysosomes are what?
Membrane enclosed sacs containing digestive enzymes
The function of a lysosomes is to what?
Breakdown intracellular debris
What organelle is the powerhouse" of the cell?
Mitochondria
Cellular respiration occurs in the ____.
Mitochondria
Define cellular respiration.
Metabolic pathway that utilizes O2 in breakdown of food molecules to produce ATP
What are the 2 functions of the nucleolis?
Synthesizes rRNA
Assembles ribosomes in the nucleus
What is contained within the nucleus?
A cells genetic material (DNA)
Membrane enclosed sacs that contain catalase & other oxidative enzymes are called ___.
Peroxisomes
Peroxisomes utilize enzymes to break down lipids & toxic substances how?
1st converting them to H2O2 then breaking down H2O2 into water & O2
What provides a selectively permeable barrier between intracellular and extracellular environments of the cell?
Plasma membrane
What occurs in the ribosomes?
Protein synthesis
Fixed ribosomes can be found where?
Attached to RER
Where are free ribosomes found?
Floating within the cytoplasm
What does the nucleus look like under a light microscope?
A very dark stained feature in the center of a cell
How do we recognize the nucleolus in a cell?
Sm dark circular structure within the nucleus
Can we view the plasma membrane w/a light microscope?
No, only with electron microscopy however outer border of cell where it is located IS often visible
Author
medic11
ID
233199
Card Set
Cellular Anatomy
Description
Cell A&P
Updated
2013-09-08T13:40:43Z
Show Answers
Home
Flashcards
Preview