HESI A2 test Biology - Biologic Molecules

Which biologic molecule is comprised of polymers of amino acids?

Proteins

How are carbohydrates absorbed into the bloodstream?

Carbohydrates are turned into glucose and absorbed into the blood via the walls of the small intestine.

Humans and other animals require nitrogen; however, they cannot obtain it from the air or soil.

What must animals consume in order to obtain the nitrogen they need?

Protein

Polymers of which of the following make up proteins?

Amino acids

How are phospholipids important in the function of cells?

They are important components of the plasma membrane.

DNA and RNA are subunits of which type of biologic molecule?

Nucleic acids

Bodybuilders are concerned with putting on a significant amount of muscle mass. Which biologic molecule would you recommend a bodybuilder increase consumption of to gain muscle mass?

Proteins

Which of the following best describes amino acids that cannot be naturally produced by the body and, therefore, are obtained through the organism’s diet?

Essential amino acids

Which of the following best describes the structure of proteins?

Polymers of amino acids

Protein synthesis in the cell requires which of the following molecules?

Amino acids

Which molecules are considered the most important in biology?

Carbohydrates, lipids, proteins, and nucleic acids

Which of the biologic molecules are considered the most significant when it comes to contributing to cellular function?

Proteins

Which of the following about carbohydrates is incorrect?

They contain only two elements: carbon and oxygen.

Which of the following about phospholipids is incorrect?

The phosphate group in phospholipids is nonpolar and non-soluble in water.

Which of the following biologic molecules are components of the molecules of inheritance?

Nucleic acids

Which of the following correctly identifies the difference between saturated and unsaturated fats?

Unsaturated fats contain one or more double bonds in their hydrocarbon tail, while saturated fats contain no double bonds.

Which of the following is a lipid that is a component of cellular membranes and a precursor to significant hormones and drugs?

Steroids

Which of the following is a protein that acts to catalyze different reactions or processes within a cell?

Enzymes

Which type of protein acts to catalyze different reactions or processes?

Enzymes

Which biologic molecule would you recommend a patient limit if they want to avoid having cardiovascular problems?

Saturated fats