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Simple (Passive) DiffusionDescribe the direction of transport relative to theconcentration gradient:Molecules move down a concentration gradient. They movefrom region of higher concentration to one of lower concentrationbecause of random thermal agitation.Describe where the energy for transport comes from:No metabolic energy input is required.Describe IF and HOW membrane proteins participate:No membrane proteins are used for this transport.Discuss whether or not this type of transport offers the cellspecificity. i.e., can the cell regulate what goes in andout?:Does not regulate the cell specificity.Facilitate DiffusionDescribe the direction of transport relative to theconcentration gradient:Molecules move down a concentration gradient. They movefrom region of higher concentration to one of lowerconcentration.Describe where the energy for transport comes from:No metabolic energy input is required.Describe IF and HOW membrane proteins participate:Uses carrier molecules (permeases) by attachment.Discuss whether or not this type of transport offers the cellspecificity. i.e., can the cell regulate what goes in andout?:The membrane carrier can change conformation after binding onexternal molecule and subsequently release the molecule on the cellinterior.Primary Active TransportDescribe the direction of transport relative to theconcentration gradient:Movement of ions or molecules across a cellular membrane from alower to a higher concentration.Describe where the energy for transport comes from:ATP, sunlight, etc.Describe IF and HOW membrane proteins participate:Involves carrier proteins (permeases) by attachment.Discuss whether or not this type of transport offers the cellspecificity. i.e., can the cell regulate what goes in andout?:Concentrates molecules inside the cell.Secondary Active TransportDescribe the direction of transport relative to theconcentration gradient:Molecules move against the gradient. They move from low tohigh concentration.Describe where the energy for transport comes from:ATP, sunlight, etc.Describe IF and HOW membrane proteins participate:Attaches to a carrier protein.Discuss whether or not this type of transport offers the cellspecificity. i.e., can the cell regulate what goes in andout?:Concentrates molecules inside the cell.
A case-control study was done in order to estimate the interrelationships between different risk factors for the myocardial infarction (heart disease).
which of the following could qualify as a top-down control on a grassland community?
choose one age-related gastrointestinal disease. how would you describe the disease and why is this age group more
The chemical equation FeS --> Fe + S is anexample of this kind of reaction. Potential energy can be illustrated by which ofthe following examples?
The oldest rocks on Earth date from about 4.2 billion years ago. What does this propose about the interval between 4.6 billion years ago, while the Earth started to form, and 4.2 billion years ago.
What mutagens can be used to revert mutants to wild type with a hydroxylamine mutation?
Assume if your target DNA is 500 base pair long molecule, that is amplified for forty cycles, how many micrograms of DNA product would you get?
What is the complementary RNA strand that is created. Assuming this sequence is within an exon and in-frame, what would be the polypeptide formed from it?
analyze the role of hospitals regarding reproduction issues such as stem cells artificial parenting abortion and
Cindy is following the Adkins diet which has placed her body into ketosis resulting from increased lipolysis. The ketones decrease pH and cause metabolic acidosis. Identify two mechanisms that would homeostatically compensate.
For a particular species, the carrying capacity isthe maximum number of individual organisms that:
A patient has an 80 percent blockage of his left anterior descending coronary artery. Illustrate what occurs in terms of myocardial oxygen supply and demand if his sympathetic nervous system is stimulated.
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