NR507 week 2 quiz part 1-Questions with Correct Answers/ Verified
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Course
NR507
Institution
NR507
Cell membrane (plasma membrane) - encloses the cell, regulates the passage of materials into
and out of the cell.
Cell membrane (plasma membrane) - consist of 3 bilayers phospholipids, cholesterol protein
Phospholipids - having a polar, hydrophilic head and a nonpolar, hydrophobic tail.
Cholest...
NR507 week 2 quiz part 1-Questions with Correct Answers/ Verified
Cell membrane (plasma membrane) - ✔✔encloses the cell, regulates the passage of materials into
and out of the cell.
Cell membrane (plasma membrane) - ✔✔consist of 3 bilayers phospholipids, cholesterol protein
Phospholipids - ✔✔having a polar, hydrophilic head and a nonpolar, hydrophobic tail.
Cholesterol - ✔✔made in the liver and helps to regulate fluid and permeability of cell membrane,
and helps the Phospholipids to stay close together.
Proteins 3 different types - ✔✔integral protein- helps to transport large molecules
peripheral proteins- helps with communication
glycoprotein- helps with cell recognition
Two broad category of cells - ✔✔eukaryotic cells- is organells with, nucleus and are advanced cells
found in animal and plants
prokaryotic cells-no nucleus or organelle, but found in the nucleus and are unicellular
Organells - ✔✔are jobs of the cells like nucleus (DNA), mitochondria (powerhouse) ribosomes etc.
Nucleus - ✔✔contains DNA and RNA and responsible for growth and reproduction also makes
ribosomes
Chromatin - ✔✔granular material visible within the nucleus; consists of DNA tightly coiled around
proteins
chromosomes - ✔✔threadlike structures made of DNA molecules that contain the genes
Ribosomes - ✔✔Makes proteins and floats in cytoplasm, and attaches to the ER.
, Two types of ER - ✔✔Rough ER has ribosomes attached to it
Smooth ER does not have ribosome attachement
Endoplasmic Reticulum - ✔✔transports synthesized proteins made by ribosomes are not found in
bacteria
Golgi apparatus - ✔✔receives proteins or other molecules that left the ER and folds the into useable
shapes and adding materials such as lipids and proteins
vacuoles - ✔✔acts like a storage
Mitochondria - ✔✔Powerhouse of the cell mekes atp during cellular respiration
Cytoskeleton - ✔✔fibers (microtubules, microfilament) that holds the cell together, helps the cell to
keep its shape, and aids in movement
animal cells - ✔✔Have a cell membrane, not a cell wall. Animal cells can move.
Lysosomes - ✔✔consist of 2 parts:
autophagy-digest molecules from the cell itself and digest dead cells
crinophagy-lysosomal digestion of unneeded (excess) secretory products
acid hydrolases - ✔✔the enzyme found in lysosome that breaks down molecules
Peroxisomes - ✔✔-helps with lipid breakdown
-detoxify the liver of chemicals and drugs
-separates the hydrogen peroxide and enzyme catalase located in the peroxisome and turn the
hydrogen peroxide into oxygen h20
intracellular fluid - ✔✔fluid within the cells, usually high in potassium and phosphate, protein
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