Match each protein in column A with its function in column B:

Question

Table matching proteins in Column A with their functions in Column B, including collagen, hemoglobin, antibody, and casein.

Accepted Answer

All right. Hello everyone. So this question is asking us which of the following proteins have their functions correctly matched. So here we have four different statements which we'll discuss individually later on as well as four different answer choices labeled A through D proposing which of these statements are correct. Now, first and foremost, recall that proteins have a wide variety of different functions. They're large complex molecules made up of long chains of amino acids. Now, as mentioned before, there are a variety of different functions that proteins can perform. So let's talk about a few. First and foremost, we have the function of catalysis where enzymes, most of which are proteins catalyze biochemical reactions. We also have some proteins providing a structural role. In other words, maintaining the structural integrity of cells and tissues. From there, we have transport where for example, transport proteins are required to carry certain molecules across a cell membrane followed by storage, right? Certain proteins can also be used to store nutrients when they're not needed. Now, some proteins are also involved in the immune system and others are involved in movement. So the movement of cells and muscle, for example, they can also act as signals, these are called receptors, right, where proteins can also be involved in cell communication and these proteins can also act as regulators themselves in which they can control certain biological processes. So now that we've given an overview of some of the major functions that proteins can play. Let's start with the first statement which says that gluten is a storage protein. This is actually correct, right? Because gluten if you recall is a storage protein found in wheat and various other grains. Now statement two says that keratin is a biological catalyst, which unfortunately is not true, right? Rather keratin is an example of one of these structural proteins and it's a major component of our hair nails and outer layer of skin. It provides a structural role. It is not a catalyst statement. Three says that immunoglobulins are defense proteins, which is true, right? And the phrase immuno is a giveaway, immunoglobulins are proteins involved with the immune system. So what they do is they identify pathogens that need to be neutralized last but not least statement four reads that Pepsin is a structural protein, which unfortunately is not true, right? Because Pepsin is an enzyme found in your stomach that helps to break down proteins during the process of digestion. So it's a catalyst, not a structural protein. So there you have it of the four statements given only numbers one and three were correct, which means that option B is our correct answer. So with that being said, thank you so very much for watching and I hope you found this helpful.

Match each protein in column A with its function in column B:

Verified video answer for a similar problem:

Key Concepts

Protein Structure

Enzyme Function

Protein-Function Relationship