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NUR 304 ( LATEST 2024 / 2025 ) CH 2 | A++ EXAM WITH ALL NEW QS & AS - GUARANTEED PASS!
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NUR 304 ( LATEST 2024 / 2025 ) CH 2 | A++ EXAM WITH ALL NEW QS & AS - GUARANTEED PASS!
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NUR 304 Ch 21. Organs
Answer
fully differentiated body parts with specialized functions
2. Tissues
Answer
groups of different cell types that combine to form a specific function
3. Cells
Answer
basic units that make up tissues
4. Plasma Membrane
Answer
protects the cell by creating a barrier that separates intracellular components from extracellular
environment surrounding it
5. Bilayer
Answer
2 interconnected layers
6. Lipid Bilayers
Answer
mainly made up of phospholipids; arrangement of plasma mem- brane
7. Phospholipids
Answer
phosphate [PO4-] bound to lipid; phosphate is the "head", lipid is the "tail"
,8. Polar (hydrophilic)
Answer
having attraction to water; heads of lipid bilayer
9. Nonpolar (hydrophobic)
Answer
lacking an attraction to water; tails of lipid bilayer
10. Glycolipids
Answer
carbohydrate bound to lipid; present in smaller amounts than phospholipids in bilayer
11. Transmembrane Proteins
Answer
Proteins that pass through the membrane; allow communication and transport between
extracellular and intracellular environments
12. Integral Proteins
Answer
specific type of transmembrane protein that becomes part of the membrane; binds to lipid tails;
often form channel proteins
13. Channel Proteins
Answer
allow for the transport of ions across the plasma membrane
14. Ion
Answer
atom with an electrical charge
15. Cytoplasm
, Answer
colloidal substance surrounding the cell nucleus composed of wa- ter, proteins, fats,
electrolytes, glycogen, and pigments
16. Organelles
Answer
structures within a cell that perform a distinct function
17. Smooth ER
Answer
synthesis of lipids, lipoproteins, and steroid hormones; reg. of intracellular Ca
18. Rough ER
Answer
synthesis of proteins via bound ribosomes; production of lysosomal enzymes (acid hydrolases)
19. Golgi Apparatus
Answer
membranous structure; prepares substances produced by ER for secretion out of cell
20. Peroxisomes
Answer
membrane-enclosed sacs smaller than lysosomes; contain en- zymes called oxidases that
neutralize oxygen free radicals; promote survival by neutralizing harmful substances
21. Oxygen Free Radicals
Answer
atoms carrying an unpaired electron and no charge
22. Lysosome
Answer
small membranous sacs; digest cellular debris with hydrolytic enzymes; metabolism of
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