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Physiology Exam 2
Terms in this set (50)
Which of the following organelles are involved in changing a protein molecule by adding a carbohydrate to it (to turn it into a glycoprotein for example)?
Which of the following (in reference to a cell membrane) is nearest the ICF region?
the glycerol portion of a phospholipid
We can first begin to see the paired chromatids during which of the following phases?
Which of the following is the correct sequence regarding the events leading up to cell reproduction?
Growth factors activate cyclin D. Cyclin D phosphorylates CDK. The phosphorylated CDK phosphorylates RB. The phosphorylated RB activates cell reproduction.
In order for acetylcholine to be reused, it must be reabsorbed into the presynaptic vesicle. However, ____ can inhibit this reuptake thereby causing the nerve to malfunction.
Identify the drug that is being described: This drug will prevent positive ions from entering through the nerve cell membrane.
Chemotherapy drugs stops cancer cells from growing by hindering the activity of ____.
Known as the "power house" of the cell, _____ generate _____ and produce cholesterol and fatty acids.
During interphase, ____ are in the process of doubling.
Chromosomes, centrioles, organelles
An increased amount of thrombospondin will have what affect on angiogenesis?
It will reduce the amount of angiogenesis from occurring.
If we started with 10 chromosomes in interphase, how many pairs of chromatids would we have in metaphase?
Name the organelle that contains catalase as one of its enzymes and reduces H2O2 into H2O and O2 molecules.
The majority of the ions located in the ECF of a neuron are ____.
Which of the following is the correct description of a hypotonic ECF?
The ECF contains a lower concentration of solutes than the cytosol contains
Which of the following is a term or terms indicates that the myelin sheath (that protects the nerve) is being destroyed?
Rough endoplasmic reticulum has _____ attached to it that produce _____.
Ribosomes : Proteins
Depolarization in a myelinated axon occurs in which of the following areas?
Nodes of Ranvier
Which of the following is the correct sequence of mitosis?
prophase, metaphase, anaphase, telophase
What does DNA stand for in the molecule DNA?
Generally, the only cells that have the potential to become cancerous are cells that have the ability to undergo cell reproduction. Which of the following cells of the brain will not become cancerous?
Radiation kills cancer cells and also "good" cells near the cancerous cells because radiation damages ____.
Which organelle packages proteins into vesicles to export them out of the cell, and is also responsible for maintaining and repairing the cell membrane?
What structure "delivers" a message to the ribosomes telling them to make protein?
An impulse will only travel one way because ____. Several choices may be true but you must pick the one that explains the reason.
the dendrites do not release a neurotransmitter
The ____ portion of a glycoprotein is the identifiable part in reference to the cell membrane.
Which of the following can cause the gated channels to open easily?
Cyanide will cause a malfunction of the ____.
Hexosaminidase is an enzyme that breaks down ____.
Cell membranes are made of a double layer of ____.
Which area of the neuron will the positive ions actually move via diffusion (from the ECF to the ICF)?
in the dendrite area
Which of the following seems to control the rate of flow of material into and out of the cell?
A person with type AB blood has which of the following?
They have the glycoproteins of a type A person and the glycoproteins of a type B person.
When the ____ begins to pinch inward, it is called ____. When the ____ begins and finishes pinching in inward, it is called ____.
Nuclear region, telophase, cell membrane, cytokinesis
Where is the highest concentration of gated channels in a neuron?
in the axon nearest the soma
Which of the following is the correct spelling for ATP?
Which of the following best describes a depolarized nerve (neuron)?
It is a neuron where some of the positive ions have started to enter the intracellular area.
Popcorn makes us thirsty because it causes the cell's ECF to become ___.
Insulin will attach to a receptor site and change the shape of ____ (which then allows glucose to enter the cell).
Which of the following statements best describes acetylcholinesterase?
It is an enzyme that will decompose Ach to form acetate and choline.
If water is moving into the cell, the cytosol of the cell must be ____.
Which of the following is true regarding smooth endoplasmic reticulum?
Its main function is to detoxify drugs and manufacture hormones
Some pediatricians recommend a 10% salt solution to help relieve a stuffy nose in children. This works because ____. (textbook question)
the cells lining the nasal cavity consists of less than 10% solute
Transcription occurs ____ and translation occurs ____.
in the nucleus; at the ribosomes
As the enzyme telomerase becomes inactive, which of the following can happen?
The telomeres cannot reform at the ends of DNA and the cell stops dividing
Which of the following protect the ends of DNA?
There will be more rapid diffusion if the concentration gradient is _____.
Chemotherapy drugs kill cancer cells and also cause hair to fall out because the cells of the hair follicle are ____.
actively undergoing cell reproduction
A cell is losing water to the environment it sits in. The ECF the cell sits in contains 40% solutes. Which of the following values represent the percent value of water inside the cell?
A cell that is exposed to a hypotonic environment will ____.
Which of the following ultimately causes the release of neurotransmitters into the synapse?
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