WorksheetsOrganic CompoundsMacromolecules
Total questions: 61
Worksheet time: 31mins
Which statement best defines organic compounds based on the lesson text: "Compounds that contain carbon"? Choose the most accurate option.
Compounds that contain carbon
Compounds that contain hydrogen only
Compounds that lack nitrogen
Compounds made exclusively of oxygen
According to the notes, which is an example of an inorganic compound because it "does not contain carbon"?
Glucose (C6H12O6)
Water (H2O)
Methane (CH4)
Ethanol (C2H5OH)
The lesson states carbon has 4 electrons in its outer shell and can form covalent bonds with up to four other atoms. What property does this most directly explain?
Carbon’s ability to form diverse molecules
Carbon’s inability to bond with hydrogen
Carbon’s exclusive formation of ionic bonds
Carbon’s tendency to form only single bonds with one atom
Based on the notes, with which elements does carbon usually form bonds in biological molecules?
Calcium and sodium
Carbon, hydrogen, oxygen, or nitrogen
Phosphorus and sulfur only
Helium and neon
Which description best matches macromolecules as defined in the notes: "Large/giant organic molecules... formed by joining smaller organic molecules together called monomers"?
Small molecules made by breaking polymers
Large organic molecules formed from monomers
Inorganic crystals formed by ionic attraction
Single atoms that do not bond
Which list correctly identifies examples of macromolecules given in the lesson?
Carbohydrates, lipids, proteins, nucleic acids
Sugars, salts, metals, gases
Starches, vitamins, minerals, water
Fatty acids, methane, ammonia, water
The notes state that biological compounds are built primarily of C, H, and O but in different ratios. What is a direct consequence of these different ratios?
They all have identical properties
They become inorganic
This gives each compound different properties
They cannot form covalent bonds
Which reasoning best supports the statement: "All living things are considered carbon-based" as noted in the lesson?
Biological molecules commonly include carbon in their structures
Living organisms only use inorganic molecules
Carbon atoms cannot bond with hydrogen
Carbon is absent from macromolecules
Which statement best describes the general formula and elemental ratio for carbohydrates as presented in the lesson?
Composed of C, H, O in a 1:2:1 ratio; general formula CH2O
Made of C and H only in equal amounts; general formula CH4
Primarily nitrogen-based molecules; general formula NH3
Composed of C, H, O in a 2:1:2 ratio; general formula C2H2O2
According to the lesson, what is the main function of carbohydrates in organisms?
Main source of energy for cells
Long-term storage of genetic information
Catalyzing chemical reactions as enzymes
Providing insulation to maintain body temperature
Which statement about carbohydrate roles is accurate based on the notes?
Plants and some animals use carbohydrates for structural purposes
Carbohydrates function only in energy storage and never in structure
Only animals use carbohydrates for structural support
Carbohydrates are exclusively components of lipids
What is the correct classification for a carbohydrate with one sugar unit?
Monosaccharide
Disaccharide
Polysaccharide
Oligopeptide
Which of the following correctly pairs each disaccharide with its monosaccharide components?
Sucrose: glucose + fructose; Lactose: glucose + galactose; Maltose: glucose + glucose
Sucrose: glucose + galactose; Lactose: fructose + glucose; Maltose: galactose + galactose
Sucrose: fructose + fructose; Lactose: glucose + glucose; Maltose: glucose + galactose
Sucrose: glucose + glucose; Lactose: glucose + fructose; Maltose: fructose + galactose
Which description matches glucose as noted in the lesson?
Blood sugar that supplies immediate energy for all cell activity
Sugar found mainly in shellfish exoskeletons
Sweetest of the sugars found in fruit
Primary structural component of plant cell walls
Which statement correctly identifies fructose from the notes?
Found in fruit and considered the sweetest of the sugars
Found in milk and used for building cell walls
Stored in animal muscles as glycogen
Combines with glucose to form maltose only
Galactose is best described in the lesson as:
A sugar found in milk
The main sugar in fruits
The polymer that makes up wood and paper
The sugar stored in animal muscles
What term describes carbohydrates made of many sugar units (three or more)?
Polysaccharides
Disaccharides
Peptides
Nucleotides
Which statement best matches starch according to the notes?
Plants store excess sugar as starch (e.g., bread, potatoes)
Animals store excess sugar as starch in muscle
Starch is the main component of exoskeletons
Starch forms the primary structure of wood and paper
What is glycogen’s role as described in the lesson?
Animals store excess sugar as glycogen (e.g., in muscle)
Plants store excess sugar as glycogen in leaves
Glycogen strengthens plant cell walls
Glycogen is a disaccharide made of glucose and fructose
Which carbohydrate is noted as providing structural support in plant cell walls and as a major component of wood and paper?
Cellulose
Glycogen
Maltose
Fructose
What biological material is chitin associated with in the lesson notes?
Shells of shrimp and lobster and some insects (exoskeletons)
Plant seeds and tubers
Animal muscle fibers only
Human blood cells
Which classification correctly matches each example with its carbohydrate type?
Monosaccharides: glucose, fructose, galactose; Disaccharides: sucrose, lactose, maltose; Polysaccharides: starch, glycogen, cellulose, chitin
Monosaccharides: sucrose, lactose, maltose; Disaccharides: glucose, fructose, galactose; Polysaccharides: starch only
Monosaccharides: glucose and sucrose; Disaccharides: starch and glycogen; Polysaccharides: lactose and maltose
Monosaccharides: cellulose and chitin; Disaccharides: glucose and fructose; Polysaccharides: sucrose and lactose
Which statement accurately contrasts monosaccharides, disaccharides, and polysaccharides based on the lesson?
Monosaccharides have one sugar unit, disaccharides have two, polysaccharides have many (three or more)
Monosaccharides and disaccharides both have two sugar units, while polysaccharides always have exactly three
Monosaccharides have many units, disaccharides one unit, polysaccharides two units
All three types have the same number of sugar units but differ in the type of atoms present
Which statement best defines a lipid based on the lesson text?
A compound that is hydrophilic and dissolves easily in water
A compound that is hydrophobic, nonpolar, and repels water and other polar substances
A polar compound that mixes with both water and oil equally
A carbohydrate made of simple sugars that store short-term energy
Which list correctly names examples of lipids highlighted in the lesson?
Fats, oils, waxes, phospholipids, steroids
Sugars, starches, cellulose, chitin
Amino acids, enzymes, antibodies, hemoglobin
DNA, RNA, ATP, nucleotides
Which is NOT one of the three functions of lipids described in the lesson?
Long-term energy storage (stores most energy)
Serving as chemical messengers (hormones)
Acting as major components of biological membranes
Catalyzing reactions as enzymes
According to the structure notes, which elements are primarily found in lipids?
C, H, O (mostly C and H)
C, H, O, N (mostly N)
C, O, Na (mostly Na)
C, H, O, P (mostly P)
Which components make up a typical triglyceride as described in the text?
Two glycerol molecules and one fatty acid chain
One glycerol and three fatty acid chains
Three glycerol molecules and one phosphate group
One glucose and three amino acids
Based on the lesson, when is a triglyceride considered a fat versus an oil at room temperature?
Fat if solid; oil if liquid
Fat if liquid; oil if solid
Fat if saturated; oil if unsaturated, regardless of state
Fat if polar; oil if nonpolar
Which description matches saturated fatty acids as presented?
Contain multiple double bonds and are usually liquid at room temperature
Have no double bonds and are usually solid at room temperature
Are highly polar and dissolve in water
Are found only in plant oils like olive oil
Which description matches unsaturated fatty acids according to the notes?
No double bonds; solid at room temperature
Double bonds; usually liquid at room temperature
Highly polar; dissolve in water
Only found in animal fats such as butter
Which is a correct example pair from the notes for saturated versus unsaturated fat sources?
Unsaturated: butter; Saturated: olive oil
Saturated: lard; Unsaturated: some fish oils
Saturated: olive oil; Unsaturated: grease from meat
Unsaturated: beeswax; Saturated: cholesterol
Which statement about waxes aligns with the lesson?
Waxes are polar molecules that dissolve in cell water
Wax on plant leaves provides a protective covering; beeswax makes up honeycomb
Waxes form the backbone of DNA and RNA
Waxes are a major component of ribosomes
Which statement about phospholipids is supported by the notes?
Phospholipids are minor components of membranes and consist of one fatty acid tail
Phospholipids are responsible for the structure and function of the cell membrane and have two fatty acid tails
Phospholipids are hydrophilic throughout and dissolve in water
Phospholipids are carbohydrates used for quick energy
What feature of phospholipids helps keep cell membranes from dissolving in the watery environment of cells?
Hydrophilic tails that attract water strongly
Hydrophobic, nonpolar tails that repel water
Polar DNA backbones integrated in the membrane
Ionic bonds with sodium ions
Which statement about steroids in the lesson is accurate?
Steroids are nucleic acids that store genetic information
Cholesterol is a base steroid from which the body produces other steroids
All steroids are carbohydrates used for short-term energy
Steroids are proteins that catalyze cellular reactions
Which describes hormones in the context of lipids from the notes?
Hormones are chemical messengers; estrogen and testosterone are types of steroid hormones
Hormones are enzymes that break down lipids
Hormones are structural carbohydrates in membranes
Hormones are hydrophilic proteins dissolved in blood
Which statement about anabolic steroids reflects the lesson content?
Anabolic steroids are variants of testosterone
Anabolic steroids are types of phospholipids with three tails
Anabolic steroids are sugars that store energy
Anabolic steroids are waxes found in plant leaves
Which statement best defines proteins based on the lesson summary provided in this question?
Primary building blocks of living things made of amino acids
Simple sugars that provide quick energy to cells
Hydrophobic lipids that form cell membranes
Nucleic acids that store genetic information
According to the notes, which foods commonly contain proteins?
Meat, eggs, milk, fish, beans
Bread, pasta, soda, candy
Olive oil, butter, waxes, steroids
Bananas, apples, lettuce, cucumbers
Which is NOT listed as one of the five functions of proteins in cells?
Provide structural support (e.g., muscles)
Transport substances inside the cell and between cells
Store hereditary information in chromosomes
Communicate signals within and between cells (like hormones)
Which protein function is directly linked to regulating blood sugar in the notes?
Insulin helps the liver uptake and store excess sugar as glycogen
Hemoglobin removes glucose from the bloodstream
Actin stores extra glucose inside muscle fibers
Collagen converts glucose into ATP directly
What cellular component is specifically noted to contain proteins that help recognize cells?
Cell membrane with receptor proteins
Mitochondrial matrix with ATP synthase
Nucleus with ribosomal DNA
Golgi apparatus with vesicle coats
Which elements primarily make up proteins according to the lesson?
Carbon, hydrogen, oxygen, nitrogen (sometimes sulfur)
Carbon, hydrogen, oxygen only
Phosphorus, calcium, sodium, chloride
Carbon, phosphorus, nitrogen, potassium
What are the small compounds/monomers that build proteins called?
Amino acids
Monosaccharides
Fatty acids
Nucleotides
How many different amino acids are described in the notes?
20
4
64
2
Which set correctly lists the four groups bonded to the central carbon in an amino acid?
Hydrogen, amino group (–NH2), carboxyl group (–COOH), variable group (–R)
Phosphate, hydroxyl, methyl, aldehyde
Hydrogen, hydroxyl (–OH), phosphate (–PO4), sulfur (–S)
Amino group (–NH2), two carboxyl groups (–COOH), variable group (–R)
What makes each amino acid different from the others?
The variable group (R)
The carboxyl group (–COOH)
The amino group (–NH2)
The presence of hydrogen
Which statement about proteins and polypeptides is accurate according to the notes?
Proteins/polypeptides are polymers made from different combinations of amino acids
Proteins/polypeptides are single monomers that cannot form chains
Polypeptides are made only of carbohydrates
Proteins are lipids linked by ester bonds
What is a polypeptide as described in the lesson?
A chain of amino acids bonded together by peptide bonds
A chain of glucose molecules linked by glycosidic bonds
A folded lipid bilayer inside the cell membrane
A double-stranded nucleic acid
Which description best defines the primary structure of a protein?
The number and order in which amino acids are joined (straight chains)
The three-dimensional folding stabilized by hydrogen bonds
The association of multiple polypeptide subunits
The temporary shape changes during enzyme action
What characterizes the secondary structure of a protein according to the notes?
A three-dimensional arrangement of a primary structure into a helix or pleat held together by hydrogen bonds
The linear sequence of amino acids with peptide bonds
The assembly of multiple polypeptide chains into a functional complex
The chemical modification of amino acids during translation
Based on the diagram referenced in this question, which two forms exemplify secondary structure?
Alpha helix (twisted) and beta pleated sheets (folded)
Random coil and quaternary complex
Double helix and lipid bilayer
Glycogen granule and microtubule
Which statement best describes the primary function of nucleic acids in cells?
They store and transmit hereditary (genetic) information.
They provide most of the cell’s immediate energy.
They form cellular membranes.
They act as the main structural components of the cytoskeleton.
Nucleic acids are composed of which set of elements?
C, H, O, N, and P
C, H, O, and S
C, H, O, and Na
C, H, O, N, and Fe
What is the monomer unit of nucleic acids?
Amino acid
Monosaccharide
Nucleotide
Fatty acid
Which list correctly identifies the three components included in a nucleotide, based on the notes?
Phosphate, sugar, and nitrogenous base
Phosphate, lipid, and amino group
Sugar, fatty acid, and base pair
Ribose, deoxyribose, and peptide bond
Which nitrogenous base is found only in DNA according to the notes?
Uracil
Thymine
Adenine
Cytosine
Which statement distinguishes DNA from RNA in structure and sugar type?
DNA is single-stranded and contains ribose; RNA is double helix and contains deoxyribose.
DNA is double helix and contains deoxyribose; RNA is single-stranded and contains ribose.
Both DNA and RNA are double helix and contain deoxyribose.
Both DNA and RNA are single-stranded and contain ribose.
Which role is specifically emphasized for RNA in the notes?
Stores genetic information
Catalyzes photosynthesis
Important in protein production
Serves as the primary energy storage molecule
Which set lists the nitrogenous bases mentioned in the notes for nucleotides?
Adenine, thymine, cytosine, guanine, uracil
Adenine, thymine, cytosine, guanine, ribose
Thymine, uracil, deoxyribose, phosphate, adenine
Guanine, cytosine, ribose, phosphate, uracil
