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NURS 611 - Exam 1 Questions and Correct Answers | Latest Update

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Nucleus ~:- contains the nucleolus, a small dense structure composed largely of RNA, most of the cellular DNA, and the DNA-binding proteins, the histones, that regulate its activity What 4 elements is DNA composed of? ~:- 1) deoxyribose phosphate molecule 2) pyrimidine bases 3) purine ba...

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  • September 23, 2024
  • 34
  • 2024/2025
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  • NURS 611
  • NURS 611
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1 | P a g e | © copyright 2024/2025 | Grade A+




NURS 611 - Exam 1 Questions and
Correct Answers | Latest Update
Nucleus


~:- contains the nucleolus, a small dense structure composed largely of RNA,

most of the cellular DNA, and the DNA-binding proteins, the histones, that

regulate its activity




What 4 elements is DNA composed of?


~:- 1) deoxyribose

phosphate molecule

2) pyrimidine bases

3) purine bases

4) hydrogen bonds (stabilize the helix through large numbers)




what are Ribosomes?


~:- RNA-protein complexes (nucleoproteins) that are synthesized in the

nucleolus and secreted into the cytoplasm through pores in the nuclear

envelope called nuclear pore complexes (NPCs)




What is the chief function of Ribosomes




Master01 | September, 2024/2025 | Latest update

, 1 | P a g e | © copyright 2024/2025 | Grade A+


~:- Chief function of ribosomes is to provide sites for cellular protein synthesis




Golgi Complex


~:- -network of flattened, smooth membranes and vesicles frequently

located near the nucleus of the cell.

-Proteins from the ER are processed and packaged into small membrane-

bound sacs or vesicles called secretory vesicles.


- refining plant and directs traffic into the cell.




Lysosomes


~:- maintain cellular health

- efficient removal of toxic cellular components


-if damaged, will release and cause AUTODIGESTION


-removal of useless organelles


- signals cellular adaptation




what do Peroxisomes contain?


~:- hydrogen peroxide and other oxygen reactive species




Master01 | September, 2024/2025 | Latest update

, 1 | P a g e | © copyright 2024/2025 | Grade A+


Mitochondria


~:- - responsible for cellular respiration and energy production.

-THINK ATP (energy) - ATP functions as the energy-transferring molecule.


- urea and heme synthesis




How does a virus get into a cell?


~:- -through trickery!

-attaches to the cell and release and enzyme to facilitate entrance to the

cell


-also by bacteria and parasites




Diffusion


~:- passive

process by which molecules move from an area of high concentration to an

area of low concentration




facilitated diffusion


~:- -needs help to enter the cell

- ex: insulin attaches to a receptor to let glucose in




Master01 | September, 2024/2025 | Latest update

, 1 | P a g e | © copyright 2024/2025 | Grade A+




Active transport


~:- -movement of a solute molecule from an area of low concentration to an

area of high concentration

- going against the gradient needs energy




What cells in our body cannot reproduce?


~:- neurons, heart cells, skeletal muscle cells, red blood cells

-they do not reproduce or transform, but some can be created by the body




Main types of cell death?


~:- apoptosis and necrosis




apoptosis


~:- a cell death that is regulated or programmed. Cellular self-destruction for

elimination of unwanted cell populations




Necrosis




Master01 | September, 2024/2025 | Latest update

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