Which statements accurately describe the structure of the cell membrane? Check all that apply. The cell membrane is a single layer of phosphate molecules and lipids. The cell membrane is a double layer of phosphate molecules and lipids. The cell membrane has protein channels that are partly inside and partly outside the cell. The cell membrane has protein channels that are entirely inside the cell. The cell membrane’s protein channels only let certain molecules pass through. The cell membrane’s protein channels let all molecules pass through.

Pepsin is found in the stomach. Salivary amylase is found in the mouth. Arginase is also found in the liver. The pH of the pepsin in the stomach is acidic. The pH of the pepsin in the stomach is acidic (around 2), the mouth pH is nearly neutral, and the liver pH is basic.

What is the pH of different organs?

Different organs of the body function well at different pH levels because enzymes exhibit their best activity in a specific pH range The enzyme that acts in the stomach can't act in the mouth due to a change in pH. The mouth has a nearly neutral pH, ranging from 6.5 to 7, and in this place, the salivary amylase works best and carries out the initial digestion of the carbohydrates. Pepsin works in stomach having a pH nearly 2.

Hence, the pepsin enzyme in the stomach works best at an acidic pH of about 2. The amylase works best at neutral pH. The liver enzyme arginase works best at a basic pH.

Learn more about the pH of different organs here.

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Answer:

the answer is B ( the stomach is more acidic thank the mouth, which is more acidic than the liver

Explanation:

T4 protein and T4 DNA

Explanation:

• A bacteriophage is an infection that attacks bacteria. At the point when the tail strands identify an objective host the bacteriophage  to the cell, injected  its DNA, and utilizations the microscopic organisms' apparatus to reproduce.
• T4 is a sort of bacteriophage that infects of  E. coli.  
• The bacteriophage T4 capsid is a prolonged icosahedron,120 nm long and 86 nm wide, and is worked with three essential proteins such as  gp23*, which shapes the hexagonal capsid cross section, gp24*, which structures pentamers at eleven of the twelve vertices.
• gp20, which frames the extraordinary dodecameric entry vertex through which DNA.  
• T4 DNA Ligase is ligation catalyst which utilized the parts of DNA by the catalyzing between  compared 5'phosphate and 3' hydroxyl endsand phosphodiester bonds in the double stranded DNA  utilizing ATP as a coenzyme.

Answer:  The Leber's hereditary optic neuropathy (LHON) is caused by defective genes contained in mitochondrial DNA.

Explanation:

LHON is causes the vision loss. This occurs due to mutation in the mitochondrial DNA. The symptoms are not associated vision loss thus it is difficult to predict that which member of family was the carrier of the disease. Some people do not get completely blind. A young male is expected to develop a risk of 50% development of this disease.