Answer: Option A and C.
Transport and receptor protein.
Explanation:
Membrane protein are pathway protein that control the flow of materials and information across the cell.
These proteins modify the cell response to the environment. Examples of membrane proteins are receptor and transport protein.
Receptor are protein that receive signal in the cell.
Transport protein are responsible for movement of ions,molecules or materials across the cell and its environment. These two proteins are responsible for modifying cell response to it's environment.
Answer: Option C.
Enzymes lowers activation energy required for a given reaction.
Explanation:
Enzymes are biological catalysts that are produced by living organisms which speed up the rate of chemical reaction.
Enzymes lower the activation energy of a given reactions. As the activation energy is lowered, the reaction becomes faster. Enzymes speed up the rate of reaction by lowering the activation energy.
Answer:
Connective tissue
Explanation:
Bone tissue is a type of dense connective tissue.
Hope this helps you!
Answer: Option (c) is the correct answer.
Explanation:
A long hydrocarbon chain that consists a terminal carboxylic group is known as a fatty acid.
An unsaturated fatty acid consists a double bond within the fatty acid chain. If a fatty acid contains more than one double bond then it is known as polyunsaturated fatty acid.
For example, oelic acid has chemical formula 
is an unsaturated fatty acid.
Therefore, we can conclude that option (c) represents an unsaturated fatty acid.
Here you go hope it helps
