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Ninth Grade (Grade 9) Biochemistry Questions

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Grade 9 Biochemical Pathways
Inside chloroplasts, chlorophyll is found.
  1. True
  2. False
Grade 9 Macromolecules
The four main categories of biomolecules in living things are
  1. nucleic acids, carbohydrates, monosaccharides, and proteins.
  2. carbon, hydrogen, organic compounds, and nucleic acids.
  3. proteins, nucleic acids, carbohydrates, and lipids.
  4. RNA, DNA, proteins, and carbohydrates.
  5. proteins, DNA, RNA, and steroids.
Grade 9 Biochemical Pathways
The process that obtains energy from food when oxygen is present is
  1. ATP synthase.
  2. photosynthesis.
  3. cellular respiration.
  4. anaerobic respiration.
Grade 9 Biochemical Pathways
A series of carrier proteins in the inner membrane of the mitochondria is called
  1. glycolysis.
  2. fermentation.
  3. cellular respiration.
  4. the electron transport chain.
Grade 9 Biochemical Pathways
In what component of the chloroplast does the light-dependent reaction happen?
  1. thylakoid
  2. stroma
  3. inner membrane
  4. outer membrane
Grade 9 Biochemical Pathways
During what stage of photosynthesis is carbon dioxide used for carbon fixation?
  1. Photosystem I
  2. Photosystem II
  3. the Calvin cycle
  4. the electron transport chain
Grade 9 Biochemical Pathways
What are the products of cellular respiration?
  1. sugar + oxygen
  2. ATP + oxygen + water
  3. ATP + water + carbon dioxide
  4. oxygen + carbon dioxide + ATP
Grade 9 Macromolecules
The monomers of carbohydrates are
  1. amino acids.
  2. peptides.
  3. saccharides.
  4. sucrose.
Grade 9 Macromolecules

This question is a part of a group with common instructions. View group »

The place on an enzyme where binding happens is the
  1. action point.
  2. enzyme.
  3. binding location.
  4. active site.
Grade 9 Biochemical Pathways
The elements or compounds produced by a chemical reaction are
  1. catalysts.
  2. products.
  3. reactants.
  4. activation energies.
Grade 9 Biochemical Pathways
What is the chemical equation for photosynthesis?
  1. CO2+H2O→C6H12O6+6O2
  2. 5CO2+7H2O→C6H12O6+6O2
  3. 6CO2+6H2O→C6H12O6+6O2
  4. C6H12O6+6O2→6CO2+6H2O
Grade 9 Macromolecules
Starch is an example of a polysaccharide.
  1. True
  2. False
Grade 9 Biochemical Pathways
The process by which cells obtain energy from food is
  1. cellular respiration.
  2. semipermeable.
  3. osmosis.
  4. diffusion.
Grade 9 Macromolecules
Which nutrient is used to build and repair cells?
  1. carbohydrates
  2. fats
  3. nucleic acids
  4. proteins
Grade 9 Macromolecules
Amino acids are the building blocks of which macromolecule?
  1. lipid
  2. carbohydrate
  3. protein
Grade 9 Biochemical Pathways
Photosynthesis is the process in which a plant
  1. produces a sugar called glucose.
  2. converts sunlight to chemical energy.
  3. utilizes carbon dioxide and releases oxygen.
  4. all of the above.
Grade 9 Biochemical Pathways
What are the products of photosynthesis?
  1. sugar + oxygen
  2. ATP + water + carbon dioxide
  3. oxygen + carbon dioxide
  4. carbon dioxide + sugar + ATP
Grade 9 Biochemical Pathways
What type of anaerobic respiration do humans perform?
  1. diffusion
  2. lactic acid fermentation
  3. alcoholic fermentation
  4. aerobic fermentation
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