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NUR 280 ( LATEST 2024 / 2025 ) EXAM 1 | QUESTIONS AND ANSWERS INCLUDED
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NUR 280 ( LATEST 2024 / 2025 ) EXAM 1 | QUESTIONS AND ANSWERS INCLUDED
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NUR 280 EXAM 11. Plasma Membrane
Answer
- protects internal organelles
- barrier from external environment
- selectively semipermeable
- glycoproteins (antigen) tells blood type
2. Sodium-Potassium Pump
Answer
- Na+ ions higher concentration outside cell
- K+ ions higher concentration inside cell
- Uses energy to actively transport across cell membrane
- 3Na+ for 2K+
- medications can alter it
3. Mitochondria
Answer
- Cell's energy producer
- Aerobic Metabolism
requires O2
,- Cellular hypoxia = anaerobic metabolism (glycolysis)
- Unique DNA, only in mitochondria
- Subject to mutation by free radicals; passed mother to child
4. Ribosomes
Answer
- Protein factories
- hypoxia causes decreased protein synthesis
5. Nucleus
Answer
- cell mastermind
- DNA inside
- transcription happens here
6. DNA
Answer
- made up of nucleotides, purine bases, pyrimidine bases
- in replication one strand stays and on goes
7. RNA
Answer
mRNA - instructions of what to do next rRNA - linking of amino acids
, tRNA - follows instructions
8. Nucleotide Base Pairs
Answer
A with T and C with G
9. Transcription
Answer
- occurs in the nucleus
- DNA helix untwists and separates
- single strand RNA
10. Translation
Answer
- occurs in ribosomes
11. Protein Synthesis
Answer
Forming proteins based on information in DNA and carried out by RNA
12. Atrophy
Answer
less or no use; cells getting smaller
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