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Bio quiz 3

QuestionAnswer
In order for bilayers to form spontaneously, the ph of the solution should be approximately neutral
which of the following describes what you would expect to observe in cells treated with the inhibitor of transport vesicle. an accumulation of insulin in the golgi
Prokaryotes absorb their nutrients from the envronment; however, prokaryotes also have cell walls. cell walls are permeable,allowing nutrients to pass through.
the most abundant organic molecule in nature is cellulose
the interior region of a phopholipid bilayer can be characerized by being hydrophobic.
disorders of which organelle are often associated with defects in transport from compartment to compartment, resulting in poor sorting of protein components within the cell? golgi apparatus.
which of the following molecules would most likely require a transport protein to cross the plasma membrane of a red blood cell? C6H12O6
the electrical component of an electrochemical gradient is due to a greater concentration of positive charges on the side of the membrane with the highest concentration of protons.
Glycosylation the addition of sugars to lipids or proteins
Where are the light-capturing pigments located in a chloroplast? thylakoid membrane
Some diseases can result from defective transport across the membrane. For example, cystic fibrosis results from a chloride ion transporter that does not function. which of the following would be affected when this transporter does not function? Both the chloride concentration gradient and the electrical gradient of the cell will be both affected.
Amino acids with hydrophobic side chains are most often found buried in the interior of folded proteins true
How is micelle different from a liposome? All of the answer options are correct.
A lysosome enzyme works best at a ph of 5
The random movement of molecules is referred to as diffusion
Which of the following is part of the endomembrane system of eukaryotic cell? nuclear envelope, golgi apparatus, and vesicles all of the above.
The sodium/potassium pump is an example of an antiporter
Which of the following properly groups a junctional complex with a cytoskeleton structure and cell adhesion molecule? adherens junction, microfilimant, and cadherin.
Lamellipodia are formed by the polymerization of actin filaments.
Strucutres known as microvilli are assocated with increased surface area for nutrient absorption.
what if a tail of a myosin is missing? muscles would not contract.
cellular crawling motion is accomplished by the polymerization of microfilaments along the leading edge in response to an activated cell surface receptor.
Some skeletal elements are more permanent than others. Which components of the cytoskeleton are dynamic structures? both microtubules and microfilaments.
Which of the following statements about intracellular transport is true? microtubules and microfilaments facilitate cellular movement, but intermediate filaments do not.
dynein motor proteins use atp energy to carry vesicles along a microtubule within a cell in a plus-to-minus direction.
The three untreated cultures of cells were included in the experiment as a control group.
The molecule lignin is associated with which property of a cell wall? water resistence.
Which of the following pairs includes junctional complexes that perform similar functions? desmosomes and adherens junctions.
Which of the following correctly lists te major tissues found in plants? dermal, ground, vascular.
dynamic instability of microtubules allows microtubules to perform their functions.
the extracellular matrix is composed of proteins and polysaccharides.
which of the following pairs includes junctional complexes that perform similar functions? plasmodesmata and gap junctions.
dynamic instability is the rapid grown and shrinkage of microtubules.
Difference in adheriens junction and desmosome While both adherens junctions and desmosomes connect cells by using cadherin proteins, adherens junctions connect to microfilaments while desmosomes connect to intermediate filaments inside the cell.
flagella move in a whiplike motion by the motor protein dynein sliding microtubules past each other.
Kinesis is a motor protein found attached to microtubules
Predict what would happen if an embryonic epidermal cell switched from expressing e-cadherin to n-cadherin the cell would leave the epidermis and join the neural cells.
Created by: mphan95
 

 



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