AP bio quiz 1

What elements are involved in Carbohydrates?

• Carbon, Hydrogen, and Oxygen
• Carbon, Nitrogen, and Oxygen
• Hydrogen, Oxygen, and Nitrogen
• Carbon, Hydrogen, and Nitrogen

What elements are involved in Proteins?

• Carbon, Hydrogen, Oxygen, Nitrogen
• Carbon, Hydrogen, Oxygen
• Carbon, Hydrogen, Nitrogen
• Hydrogen, Oxygen, Nitrogen

What elements are involved in lipids?

• Carbon, Hydrogen, Oxygen, Nitrogen
• Hydrogen, Oxygen, Nitrogen, Sulfur
• Carbon, Hydrogen, Oxygen
• Carbon, Hydrogen, Oxygen, Phosphorus

What elements are involved in nucleic acids?

• Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus
• Carbon, Hydrogen, Oxygen, Nitrogen, Sulfur
• Carbon, Hydrogen, Oxygen, Nitrogen, Silicon
• Carbon, Hydrogen, Oxygen, Nitrogen, Iron

Answer explanation

C,H,O,N,P

What are the monomers (sub-units) and polymers of Lipids?

• Monomers: Fatty acids and glycerol, Polymers: Triglycerides
• Monomers: Amino acids, Polymers: Proteins
• Monomers: Nucleotides, Polymers: DNA
• Monomers: Monosaccharides, Polymers: Polysaccharides

What are the monomer (sub-unit) and polymer of Carbohydrates?

• Monomer: Amino acids, Polymer: Protein

• Monomer: Nucleotides, Polymer: Nucleic acids

• Monomer: Monosaccharides, Polymer: Polysaccharides

• Monomer: Fatty acids, Polymer: Lipids

Answer explanation

The question asks about the monomer and polymer of Carbohydrates. The correct answer is 'Monomer: Monosaccharides, Polymer: Polysaccharides'. Monosaccharides are the simplest form of carbohydrates and can combine to form chains known as Polysaccharides. Other options are incorrect as they represent the monomer and polymers of proteins, nucleic acids and lipids respectively.

What are the monomers (sub-units) and polymers of Proteins?

• Monomers: Amino Acids, Polymers: Polypeptides
• Monomers: Nucleotides, Polymers: DNA
• Monomers: Glucose, Polymers: Starch
• Monomers: Fatty Acids, Polymers: Lipids

What are the monomers (sub-units) and polymers of Nucleic Acids?

• Monomers: Nucleotides, Polymers: DNA and RNA

• Monomers: Amino Acids, Polymers: Proteins

• Monomers: Monosaccharides, Polymers: Polysaccharides

• Monomers: Fatty Acids, Polymers: Lipids

Answer explanation

Nucleic acids are biological macromolecules that include DNA and RNA. These compounds are polymers, composed of simpler sub-units known as monomers. In the case of nucleic acids, the monomers are nucleotides. So, the correct answer is 'Monomers: Nucleotides, Polymers: DNA and RNA'. The other options refer to different types of biological molecules and their corresponding monomers.

What is a hydrogen bond?

Where are hydrogen bonds found in water?

• In the nucleus of the water molecule

• Between the oxygen and hydrogen atoms within a single water molecule

• Between the hydrogen atom of one water molecule and the oxygen atom of another

• In the outer shell of the water molecule

Answer explanation

Hydrogen bonds in water are found between the hydrogen atom of one water molecule and the oxygen atom of another. This is because water molecules are polar, with the oxygen atom having a slight negative charge and the hydrogen atoms a slight positive charge, which leads to the formation of hydrogen bonds.