A relatively large molecule that has an electrical charge associated with it, regardless if it is full charge or partial. Would require facilitated diffusion to enter a cell.

Eg - complex sugars, or disaccharides - fructose, or amino acids, ions - Na + or Ca +.

3 0

3 years ago

The majority of water reabsorption from the filtrate occurs in the _____ ____ ______.

const2013 [10]

The majority of water reabsorption from the filtrate occurs in the proximal convoluted tubule (PCT).

Further Explanation:

The nephron is the functional unit of the kidney which plays key role in the removal of waste product from the body. Nephron consists of glomerulus and convoluted tubules.

Parts of the nephron:

1. Proximal convoluted tubule (PCT): It is the first part of nephron which is closer to the glomerulus. It consists of microvilli and various carrier protein which increases its surface area for reabsorption. This part is responsible for the reabsorption of sodium chloride, glucose, water, amino acid, bicarbonate etc.

2. Henle loop: This is present after PCT. As it forms loop like structure therefore it is named so. It consist of ascending loop and descending loop. This part is responsible for the reabsorption of water, sodium and chloride.

3. Distal convoluted tubule: It is the last part of the nephron which empties its filtrate into the collecting duct. This part is responsible for the reabsorption sodium and chloride.

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Answer Detail:

Grade: High School

Subject: Biology

Chapter: The excretory system

Keywords:

Water reabsorption, proximal convoluted tubule, nephron, kidney, glomerulus, microvilli, carrier protein, surface area, amino acid, bicarbonate, Henle loop, distal convoluted tubule, collecting duct, PCT, DCT.

3 0

3 years ago