D. A protein catalyst in a living organism
The answer to this would be true.
Answer:
The main structural component of plant cell walls is cellulose which is a type of carbohydrate made up of a long chain of glucose molecules (a polysaccharide).
Explanation:
The plant cell walls are composed of cellulose, which is a structural carbohydrate made up of a long chain of glucose molecules (β linked D-glucose units). It is a polysaccharide like starch, but the starch molecule is flexible and the cellulose molecule is rigid. Each of these polysaccharide chains is connected together by hydrogen bonds. Microfibrils are formed by arranging some of these polysaccharide chains in parallel arrays. Due to the presence of hydrogen bonds, the microfibrils are extremely tough and inflexible. This property of cellulose provides strength and rigidity to the plant cell walls.
Any sensation one receives activates <u>sensory neurons </u>which take the message to the brain for processing
Answer: Option D
<u>Explanation:</u>
The sensory neurons are the ones that are active for the five senses. They are present throughout the body. It activates immediately when a sensation like touch is felt. This sends information to the nervous system.
There are two sensory inputs;
- A physical input which can be felt by touch like fire, chillness.
- A chemical input like taste or smell. Sensory neurons are the transmitters that carry signal from the body skin to the nervous system.It sends these impulses to the central nervous system.
Answer:
D) cofactor necessary for enzyme activity.
Explanation:
Carboxypeptidase is an enzyme found in the digestive system whose function is to hydrolyze a peptide bond in the terminal carbon of a protein. Said enzyme contains a zinc atom in its active site and when losing a zinc atom it would lead to loss of the activity of the enzyme, making it of great importance for the activity of the enzyme.
