NUR555 Week One Exam. Verified
Questions and Answers
What are the primary modes of chemical signaling? (5) - answer✔✔paracrine, horemonal,
neurohormonal, neurotransmitter, contact-dependent
What are the eight chief cellular functions? - answer✔✔movement, conduction, absorption,
secretion, excretion, respiration, reproduction and communication
How does the starling law effect patient presentation? - answer✔✔dehydration increases
heartrate
Does poor ventilation create metabolic acidosis or alkalosis? - answer✔✔metabolic acidosis
(caused by)
What are chromosome aneuploidies? - answer✔✔when there is only one of a pair of
chromosomes
How is fragile X syndrome inherited? - answer✔✔from the birth mother
What is DNA methylation? - answer✔✔when genes are inactivated; happens more over time and
with stressors
what are the only type of cells that are not somatic? - answer✔✔sex cells
What is the centrosome? - answer✔✔contains centrioles and pericentroles that are essential for
cell division
What does the Endoplasmic reticulum do? - answer✔✔synthesizes proteins and other materials
What makes "rough" endoplasmic reticulum "rough" - answer✔✔Ribosomes
what is the Golgi complex? - answer✔✔where the ER sends proteins/materials to be released
3 main steps of cellular respiration - answer✔✔glycolysis (produces ATP), and the citric acid
cycle, oxidative phosphorylation (electron transport chain),
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where does cellular respiration take place - answer✔✔in mitochondria
How many ATP molecules are produced from one glucose molecule? - answer✔✔38 ATP
molecules
RNA polymerase does what? - answer✔✔unzips DNA to allow mRNA trascription
does translation or transcription come first? - answer✔✔Transcription creates mRNA, translation
creates protein from amino acids
how many types of amino acids? - answer✔✔20
what is a Condon? - answer✔✔3 base pairs that code for an amino acid
Adenine binds with? - answer✔✔Thymine binds with?
Cytosine binds with? - answer✔✔Guanine binds with?
what is replication? - answer✔✔when DNA is copied prior to cell division
What cell cycle phase contains DNA replication? - answer✔✔the S phase contains what
function?
The M phase stands for what? - answer✔✔Mitosis (cell division)
What happens in the G2 phase - answer✔✔Protein synthesis for coming division in the M phase
What is Meiosis - answer✔✔the splitting of sex cells into haploids of 23 chromosomes
What part of the cell produces steroids? - answer✔✔the smooth endoplasmic reticulum (SER)
produces what?
what of the 3 steps of cellular respiration creates the most ATP? - answer✔✔The citric acid
cycle
what is glycocalyx? - answer✔✔slimy carbohydrate plasma surface that reduces mechanical
damage to a cell
which uses energy and which releases: anabolism and catabolism? - answer✔✔Anabolism uses
energy, catabolism releases energy
Is Na and K moved by passive or active transport - answer✔✔active transport
what percent of ATP is used to move Na and K - answer✔✔60-70%
what are the four stages of mitosis (M stage)? - answer✔✔Prophase, metaphase, anaphase,
telophase