Answer:
Channel protein.
Explanation:
Channel protein have gate that opens and close which allow the passage of polar substance or ions to move to permeable membrane of the cell by diffusion. They are water filled and allow the movementof charged molecules inside and outside the cell membrane i.e polar molecules move through non polar bilayer of the cell membrane.
Answer:
The loss of protein x function would lead to an increase in intracellular potassium ion ( K+) concentration
The common function shared by alveoli, capillaries and glomerular capsules are lined with simple squamous epithelium so they are all involved where absorption or transport of the materials occur. The function of the squamous epithelium is mainly selective transmembrane transportation either by using the concentration gradient or by active transport by using the membrane bound carrier proteins.
The pulmonary alveoli are highly vascular in structure and are formed by a layer of the squamous epithelial cells and a network of capillaries.
The capillaries are also made up of squamous epithelial cells and gas exchange between the alveoli and blood vessels occurs through these capillaries.
Answer:
calories
Explanation:
Given
Weight of Mark 
pounds
Rate at which Mark burns calories 
kcal/pound/hour
Total time in one week in terms of hours 
minutes
minutes
Number of hours in 
minutes is equal to
hours
So, the total number of calories burned by Mark in one week
calories
