Organic Chemistry Overview

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Questions and Answers

What is the primary element that all organic compounds contain?

  • Oxygen
  • Carbon (correct)
  • Hydrogen
  • Nitrogen

Which of the following represents the carbohydrate monosaccharides?

  • Glycogen and chitin
  • Glucose and fructose (correct)
  • Sucrose and lactose
  • Starch and cellulose

What is the ratio of carbon to hydrogen to oxygen in carbohydrates?

  • 1:2:1 (correct)
  • 1:3:1
  • 1:2:2
  • 1:1:1

Which type of lipid is a major component of cell membranes?

<p>Phospholipids (A)</p> Signup and view all the answers

What characterizes saturated fatty acids?

<p>Solid at room temperature (A)</p> Signup and view all the answers

Which of the following is a function of carbohydrates in living organisms?

<p>Energy source and structural support (B)</p> Signup and view all the answers

What type of bond links monosaccharides in disaccharides?

<p>Covalent bonds (B)</p> Signup and view all the answers

Which of the following best describes waxes?

<p>Composed of fatty acids and alcohols (D)</p> Signup and view all the answers

What is the sugar formed when glucose and galactose bond together?

<p>Lactose (D)</p> Signup and view all the answers

Which lipid is primarily used for energy storage and insulation?

<p>Fats (A)</p> Signup and view all the answers

What are amino acids primarily defined as?

<p>Building blocks of proteins (A)</p> Signup and view all the answers

Which bond specifically connects amino acids together within a protein?

<p>Peptide bond (C)</p> Signup and view all the answers

What role do enzymes primarily serve in biological systems?

<p>Speed up the rates of chemical reactions (D)</p> Signup and view all the answers

Which of the following is a function of proteins involved in movement?

<p>Actin and myosin (C)</p> Signup and view all the answers

What process describes the building of larger molecules from smaller ones by removing water?

<p>Dehydration synthesis (D)</p> Signup and view all the answers

Which nucleic acid is responsible for carrying genetic information in cells?

<p>Deoxyribonucleic acid (DNA) (B)</p> Signup and view all the answers

Which component of a nucleotide differentiates DNA from RNA?

<p>Thymine (C)</p> Signup and view all the answers

What defines a polymer in biochemistry?

<p>Two or more monomers linked together (C)</p> Signup and view all the answers

Which function of proteins is primarily exemplified by antibodies?

<p>Defense (B)</p> Signup and view all the answers

How many different amino acids are generally used by organisms to make proteins?

<p>20 (A)</p> Signup and view all the answers

What type of carbohydrates are formed by the covalent bonding of two monosaccharides?

<p>Disaccharides (D)</p> Signup and view all the answers

Which of the following compounds is primarily used by animals for energy storage?

<p>Glycogen (B)</p> Signup and view all the answers

What characterizes unsaturated fatty acids compared to saturated ones?

<p>They contain fewer hydrogen atoms. (C)</p> Signup and view all the answers

What type of lipid includes cholesterol and hormones?

<p>Steroids (B)</p> Signup and view all the answers

Which of the following organic compounds does not primarily serve as an energy source?

<p>Nucleic Acids (A)</p> Signup and view all the answers

What distinguishes the different amino acids from each other?

<p>The identity of the side group attached (C)</p> Signup and view all the answers

Which of the following statements about proteins is true?

<p>Collagen provides structural support in connective tissues (D)</p> Signup and view all the answers

What is the primary function of enzymes within living organisms?

<p>To accelerate chemical reactions (B)</p> Signup and view all the answers

What does the term 'dehydration synthesis' refer to in biochemical processes?

<p>Building larger molecules by removing water (C)</p> Signup and view all the answers

Which of the following components is found in nucleic acids but not in proteins?

<p>Phosphorus (D)</p> Signup and view all the answers

Flashcards

Organic Chemistry

The chemistry of organic compounds, which contain carbon.

Carbohydrates

Organic compounds with carbon, hydrogen, and oxygen in a 1:2:1 ratio. Used for energy.

Monosaccharides

Simplest carbohydrates, also called simple sugars.

Disaccharides

Two monosaccharides linked together by covalent bonds.

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Polysaccharides

Giant polymers made from many monosaccharides linked together.

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Lipids

Organic compounds including fats, oils, waxes, and steroids, containing carbon, hydrogen, and oxygen but in different ratios than carbohydrates

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Saturated Fatty Acids

Fatty acids with many hydrogen bonds, typically solid at room temperature.

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Unsaturated Fatty Acids

Fatty acids with fewer hydrogen bonds, typically liquid at room temperature.

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Phospholipids

Lipids containing phosphorus, major components of cell membranes.

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Steroids

Lipids composed of four linked rings of carbon atoms. Includes hormones like cholesterol.

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Amino Acid

The building blocks of proteins.

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Peptide Bond

The bond that joins amino acids together.

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Protein Function

Proteins perform diverse roles in living organisms, like movement, structure, and biochemical control.

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Monomer

A small molecule that can join together to form larger molecules called polymers.

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Polymer

A large molecule formed when many monomers link together.

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Dehydration Synthesis

A chemical reaction that builds molecules by removing water.

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Hydrolysis

A chemical reaction that breaks down molecules by adding water.

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Nucleic Acid

Large complex molecules that carries genetic material. DNA and RNA are examples.

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Carbon's Covalent Bonds

Carbon atoms can form up to 4 covalent bonds due to its 4 outer shell electrons.

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Protein Structure

Proteins have different shapes that determine their function, like collagen in connective tissues or hemoglobin in blood.

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Why is Carbon important?

Carbon's ability to form four covalent bonds allows it to link with other atoms, creating the diverse and complex molecules of life.

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What are Carbohydrates?

Organic compounds made of carbon, hydrogen, and oxygen in a 1:2:1 ratio, primarily used by living things for energy.

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What are Monosaccharides?

Simple sugars that are the building blocks of carbohydrates. Examples include glucose and fructose.

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What is the difference between saturated and unsaturated fats?

Saturated fats have all carbon bonds filled with hydrogen, making them solid at room temperature (like butter). Unsaturated fats have some double bonds, making them liquid at room temperature (like oil).

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What are Phospholipids?

Lipids containing phosphorus, which are crucial components of cell membranes. They control what enters and exits cells.

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What are proteins?

Proteins are large organic molecules composed of carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. They are essential for all living organisms and play a variety of crucial roles.

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What are amino acids?

Amino acids are the building blocks of proteins. They are organic compounds containing an amino group (-NH2), a carboxyl group (-COOH), and a side group that determines their identity.

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What is a peptide bond?

A peptide bond is a covalent bond that links amino acids together to form proteins. It is formed by the joining of the amino group of one amino acid and the carboxyl group of another.

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What are nucleic acids?

Nucleic acids are complex organic molecules composed of carbon, hydrogen, oxygen, nitrogen, and phosphorus. They are responsible for carrying and transmitting genetic information within cells.

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Study Notes

Organic Chemistry

  • Organic chemistry studies organic compounds, which contain carbon.
  • Many naturally occurring compounds are organic.
  • Carbon readily bonds with other atoms due to its structure.

Carbohydrates

  • Carbohydrates are composed of carbon, hydrogen, and oxygen (1:2:1 ratio).
  • Sugars and starches are examples.
  • Living organisms use carbohydrates for energy and structural support.
  • Monosaccharides: Simple sugars like glucose and fructose.
  • Disaccharides: Two monosaccharides bonded together (e.g., sucrose = glucose + fructose).
  • Polysaccharides: Large polymers of linked monosaccharides (e.g., starch, cellulose).

Lipids

  • Lipids include fats, oils, waxes, and steroids.
  • Generally composed of carbon, hydrogen, and oxygen, often with a higher proportion of C and H compared to carbohydrates.
  • Fats: Compounds of glycerol and 3 fatty acids.
  • Fatty acids consist of a chain of carbon atoms with an acid group at one end, their structure determining fat characteristics.
  • Fats are used for energy storage and insulation.
  • Phospholipids: Lipids with phosphorus, a major component of cell membranes.
  • Steroids: Lipids with four linked carbon rings (e.g., cholesterol, hormones).
  • Waxes: Organic compounds formed from fatty acids and alcohols.

Proteins

  • Proteins are organic compounds made up of carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur.
  • Essential for various functions in living organisms.
  • Amino Acids: Building blocks of proteins, each with a unique side group.
  • Twenty different amino acids are used in protein synthesis.
  • Peptide Bonds: Covalent bonds that link amino acids together.
  • Proteins have numerous functions: structure (collagen), movement (actin/myosin), control of reactions (enzymes), transport, storage, and regulation.

Nucleic Acids

  • Nucleic acids are large, complex molecules with C, H, O, N, and P.
  • They are the genetic material (DNA and RNA).
  • DNA (deoxyribonucleic acid) and RNA (ribonucleic acid) store and transmit genetic information.
  • Carbon atoms form a base for various configurations that are linear, branched or cyclic.
  • Monomers (smaller compounds) link to make polymers (larger compounds).
  • Organic compounds form long polymers using monomers like amino acids, sugars, and nucleic acids.

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