Introductory Information About Biomolecules

22 Questions | By Palewine | Last updated: Nov 24, 2017 | Total Attempts: 378

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Introductory information about different nutrient groups and some basics of organic chem

Questions and Answers

1.

The element found in all living things...______-based life forms.
- A.
  
  Calcium
- B.
  
  Chloride
- C.
  
  Carbon
- D.
  
  Crystals
2.

The nutrient group that organisms rely on for their energy production
- A.
  
  Proteins
- B.
  
  Lipids
- C.
  
  Carbohydrates
- D.
  
  Nucleic acids
3.

The nutrient group that is used in the composition of enzymes, hormones, and does many different jobs around the cell.
- A.
  
  Proteins
- B.
  
  Lipids
- C.
  
  Carbohydrates
- D.
  
  Nucleic acids
4.

The bio-molecular group that carries and passes on the hereditary information of the organism
- A.
  
  Proteins
- B.
  
  Lipids
- C.
  
  Carbohydrates
- D.
  
  Nucleic acids
5.

The nutrient group used in the composition of waxes (plants) and responsible for insulation of some organisms. Many organisms store this nutrient for later use in the production of energy.
- A.
  
  Protein
- B.
  
  Lipid
- C.
  
  Carbohydrate
- D.
  
  Nucleic acid
6.

These bio-molecules are significant features of the cell (plasma) membrane
- A.
  
  Protein and lipid
- B.
  
  Lipid and nucleic acid
- C.
  
  Carbohydrate and nucleic acid
- D.
  
  Nucleic acid and protein
7.

The structural unit ("building block") of a protein is the
- A.
  
  Monosaccharide
- B.
  
  Fatty acid
- C.
  
  Nucleotide
- D.
  
  Amino acid
8.

The structural components of lipids include
- A.
  
  Complex carbohydrates
- B.
  
  Amino acids
- C.
  
  Fatty acids and glycerol
- D.
  
  Nucleotides
9.

DNA is composed of four different types of
- A.
  
  Proteins
- B.
  
  Lipids
- C.
  
  Carbohydrates
- D.
  
  Nucleotides
10.

Glucose, the primary source of energy for a cell, is a type of
- A.
  
  Polypeptide
- B.
  
  Polysaccharide
- C.
  
  Disaccharide
- D.
  
  Monosaccharide
11.

The atoms that make up carbohydrates are
- A.
  
  C, H and O
- B.
  
  C, H, O and N
- C.
  
  C and H
- D.
  
  C, H and N
12.

Lipids are
- A.
  
  Hydrophobic
- B.
  
  Insoluble in water
- C.
  
  Important for energy storage
- D.
  
  All of these
13.

Which of the following is not a function in which lipids play an important role?
- A.
  
  Vision
- B.
  
  Membrane structure
- C.
  
  Controlling water
- D.
  
  Storing energy
14.

You have isolated an unidentified liquid from a sample of beans. You add the liquid to a beaker of water and shake vigorously. After a few minutes, the water and the other liquid separate into two layers. To which class of large biological molecules does the unknown liquid most likely belong?
- A.
  
  Proteins
- B.
  
  Lipids
- C.
  
  Nucleic acids
- D.
  
  Carbohydrates
15.

Amino acids are the monomers that join together to form
- A.
  
  Carbohydrates
- B.
  
  Lipids
- C.
  
  Proteins
- D.
  
  Nucleic acids
16.

Enzymes are
- A.
  
  Lipids
- B.
  
  DNA
- C.
  
  Carbohydrates
- D.
  
  Proteins
17.

Which description BEST fits the class of molecules known as nucleotides?
- A.
  
  A pentose sugar and a purine or pyrimidine
- B.
  
  A phosphate group and an adenine or uracil
- C.
  
  A nitrogenous base and a pentose sugar
- D.
  
  A nitrogenous base, a phosphate group, and a pentose sugar
18.

Which of the following BEST describes the flow of genetic information in eukaryotic cells?
- A.
  
  Proteins ->DNA ->RNA
- B.
  
  DNA->RNA->proteins
- C.
  
  DNA->DNA->RNA
- D.
  
  DNA->proteins->DNA
19.

Hemoglobin is a globular protein composed of four polypeptide chains and their associated heme groups. Each polypeptide chain is a string of amino acids. What holds the amino acids together?
- A.
  
  Hydrogen bonds
- B.
  
  Double covalent bonds
- C.
  
  Ionic bonds
- D.
  
  Peptide bonds
20.

Think about the 3 components of a nucleotide. Now, which molecules are components of RNA (which is made of nucleotides)? (hint: think about A,C,T,G, and U...which one is unique to RNA??)
- A.
  
  Phosphate, ribose, thymine
- B.
  
  Phosphate, ribose, uracil
- C.
  
  Phosphate, deoxyribose, uracil
- D.
  
  Phosphate, deoxyribose, thymine
21.

Which organic molecules store the genetic information of a cell?
- A.
  
  Carbohydrates
- B.
  
  Proteins
- C.
  
  Lipids
- D.
  
  Nucleic acids
22.

What is the major purpose of DNA?
- A.
  
  To protect the cells from viruses
- B.
  
  To help in amino acid biosynthesis
- C.
  
  To store genetic information and serve as template to make RNA
- D.
  
  To make carbohydrates during photosynthesis