Please help with this question.
Insulin, antibodies, enzymes and progesterone are four of many molecules found in and around cells. Of these four__________ are/is not a protein.
a. antibodies
b. insulin and antibodies
c. antibodies and progesterone
d. progesterone
I think the answer is "A" but am not sure. please help
progesterone does not contain nitrogen: proteins are nitrogenous compounds. Antibodies are proteins.
Progesterone.
To determine the correct answer, we need to consider whether each molecule listed is a protein or not.
Let's go through each option:
a. antibodies: Antibodies are proteins. They are Y-shaped molecules that play a crucial role in the immune system's defense against foreign substances. Therefore, option a is incorrect.
b. insulin and antibodies: Insulin is a hormone produced by the pancreas and is also a protein. Since both insulin and antibodies are proteins, option b is incorrect.
c. antibodies and progesterone: We know that antibodies are proteins, but what about progesterone? Progesterone is a steroid hormone, not a protein. Steroids are made up of carbon, hydrogen, and oxygen atoms and do not contain nitrogen. Therefore, option c is correct.
d. progesterone: As mentioned earlier, progesterone is a steroid hormone, not a protein. Therefore, option d is incorrect.
Based on our analysis, the correct answer is option c: antibodies and progesterone. Progesterone is the molecule that is not a protein in the given options.