Answer:
C. carrier proteins
Explanation:
The core of the cell membrane is made up of hydrophobic tails of phospholipid. It does not allow the water-soluble material to move across the membrane. Carrier proteins are the membrane proteins that serve as transporters.
The carrier proteins bind the ion or water-soluble molecules and undergo changes in shape. This transports the molecule across the membrane. Carrier proteins serve in passive facilitated diffusion and active transport. The carrier proteins involved in facilitated diffusion transport the molecules down the concentration gradient without any expenditure of energy.
<h3>Correct answer choice is:</h3><h2>
B. Availability of technology.</h2>
Explanation:
Lesioning is when tiny sections of injury (lesions) are formed in your brain. These lesions point cells that regulate transportation and are practiced to heal movement diseases, such as primary shivering, Parkinson's syndrome, and dystonia. Lesioning damages brain tissue, which can produce adverse results also with today's targeted methods. The most obvious uncertainties are speech and other cognitive difficulties, particularly when the method is done on both surfaces of the brain. Other ventures involve gait dilemmas.
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Answer:
I would believe the mesosphere would be the most difficult layer to breathe. Troposphere is where we are, ov we can breathe here, stratosphere would be hard to breath in as well
All cell activity is controlled by the nucleus