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Metabolism & Molecules of Life. Hot Seat. Many organic molecules are made of repeating units of individual molecules called __________. Monomers. Which of the following is a polysaccharide?. Starch Sucrose Glucose G alactose. The synthesis (production) of a protein from amino acids is.

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many organic molecules are made of repeating units of individual molecules called
Many organic molecules are made of repeating units of individual molecules called __________.
  • Monomers
which of the following is a polysaccharide
Which of the following is a polysaccharide?
  • Starch
  • Sucrose
  • Glucose
  • Galactose
the synthesis production of a protein from amino acids is
The synthesis (production) of a protein from amino acids is
  • Photosynthesis
  • Cellular respiration
  • Hydrolysis
  • Dehydration synthesis
the chemical reactions used in the process of food digestion are
The chemical reactions used in the process of food digestion are _________.
  • dehydration reactions
  • hydrolysis reactions
  • condensation reactions
  • very diverse and not categorized
enzymes
Enzymes?
  • Your answer choices are:
    • Carbohydrates
    • Lipids
    • Proteins
    • Nucleic Acids
primary energy source
Primary Energy Source?
  • Your answer choices are:
    • Carbohydrates
    • Lipids
    • Proteins
    • Nucleic Acids
structure of cell membrane
Structure of Cell Membrane?
  • Your answer choices are:
    • Carbohydrates
    • Lipids
    • Proteins
    • Nucleic Acids
starch
Starch?
  • Your answer choices are:
    • Carbohydrates
    • Lipids
    • Proteins
    • Nucleic Acids
hair and nails
Hair and Nails?
  • Your answer choices are:
    • Carbohydrates
    • Lipids
    • Proteins
    • Nucleic Acids
glucose
Glucose?
  • Your answer choices are:
    • Carbohydrates
    • Lipids
    • Proteins
    • Nucleic Acids
long term energy storage
Long term energy storage?
  • Your answer choices are:
    • Carbohydrates
    • Lipids
    • Proteins
    • Nucleic Acids
what type of energy is stored in food
What type of energy is stored in food?
  • Light
  • Chemical
  • Electrical
  • Thermal
starch is classified as a
Starch is classified as a
  • Disaccharide
  • Monosaccharide
  • Nucleotide
  • Polysaccharide
lactose is classified as a
Lactose is classified as a
  • Disaccharide
  • Monosaccharide
  • Nucleotide
  • Polysaccharide
sucrose is classified as a
Sucrose is classified as a
  • Disaccharide
  • Monosaccharide
  • Nucleotide
  • Polysaccharide
glucose is classified as a
Glucose is classified as a
  • Disaccharide
  • Monosaccharide
  • Nucleotide
  • Polysaccharide
fats that are stored in human tissue contain molecules of
Fats that are stored in human tissue contain molecules of
  • Glycerol and fatty acids
  • Amino acids
  • Monosaccharides and disaccharides
  • nucleotides
is the reaction below a synthesis or decomposition reaction
Is the reaction below a synthesis or decomposition reaction?

Catalase

  • 2H2O2 --------------------> 2H2 + 2O2
  • Decomposition because the hydrogen peroxide is being broken down into hydrogen and oxygen gas.
what are the enzyme and substrate in the reaction below
What arethe enzyme and substrate in the reaction below?

Catalase

  • 2H2O2 --------------------> 2H2 + 2O2
  • Enzyme = Catalase
  • Substrate = 2H2O2
why is catalase written on the arrow
Why is catalase written on the arrow?

Catalase

  • 2H2O2 --------------------> 2H2 + 2O2
  • Because it is not used up in the reaction. It can be used over and over again.
which are the reactants products
Which are the reactants? Products?

Catalase

  • 2H2O2 --------------------> 2H2 + 2O2
  • Hydrogen peroxide – reactant
  • Hydrogen and oxygen molecules - products
what is the function of an enzyme
What is the function of an enzyme?
  • Speed up or catalyze chemical reactions
which of the following is characteristic of an enzyme
Which of the following is characteristic of an enzyme?
  • It is a carbohydrate
  • It is destroyed after each chemical reaction
  • It provides energy for any chemical reaction
  • It increases the rate of a specific chemical reaction
which metabolic process is responsible for digesting food molecules
Which metabolic process is responsible for digesting food molecules?
  • Dehydration synthesis
  • Hydrolysis
  • Photosynthesis
  • Active transport
the lock and key model of enzyme action illustrates that a particular enzyme molecule will
The “lock and key” model of enzyme action illustrates that a particular enzyme molecule will…
  • Form a permanent enzyme-substrate complex
  • Be destroyed and reassembled
  • Interact with a specific type of substrate molecule
  • React at identical rates under all conditions
the part of the enzyme molecule into which the substrate fits is called the
The part of the enzyme molecule into which the substrate fits is called the
  • Active site
  • Coenzyme
  • Polypeptide
  • lactase
slide34
T/F
  • Each enzyme can catalyze (speed up) many different types of reactions.
    • FALSE
    • Enzymes are specific and each enzyme only works on ONE reaction.
slide35
T/F
  • An enzyme can only be used once.
    • FALSE
    • Enzymes can be used over and over again until they wear out or denature (change shape because of heat)
slide38
Polymers of polysaccharides, fats, and proteins are all joined together from monomers by which process?
  • connecting monosaccharides together (condensation reactions)
  • the addition of water to each monomer (hydrolysis)
  • the removal of water (dehydration reactions)
  • ionic bonding of the monomers
  • the formation of hydrogen bonds between monomers
slide39
Which of the following best summarizes the relationship between dehydration synthesis reactions and hydrolysis?
  • Dehydration synthesis reactions assemble polymers, and hydrolysis breaks down polymers.
  • Dehydration synthesis reactions can occur only after hydrolysis.
  • Hydrolysis creates monomers, and dehydration synthesis reactions break down polymers.
  • A and C are correct.
in an endothermic reaction energy is in an exothermic reaction energy is
In an endothermic reaction energy is _________. In an exothermic reaction energy is _________.
  • First blank – stored
  • Second blank - released
what does the activation energy provide energy for
What does the activation energy provide energy for?
  • It breaks the bonds between atoms.
what happens to enzyme activity as the substrate concentration increases
What happens to enzyme activity as the substrate concentration increases?
  • The enzyme activity increases until all of the enzymes are saturated. At this point all the enzymes are in use and the reaction cannot go any faster.
draw a general line to represent an enzyme that functions best in an acidic environment
Draw a “general” line to represent an enzyme that functions best in an acidic environment.
what happens to enzyme activity as the temperature increases
What happens to enzyme activity as the temperature increases?
  • The enzyme activity increases until the temperature gets too hot and the enzyme denatures (changes shape)
identify the following
Identify the following…
  • Enzyme
  • Active site
  • Reactants
  • Products
slide59
Which of the reactions below is a hydrolysis reaction? Which of the reactions below is a dehydration synthesis reaction?
label the diagram
Label the diagram
  • Substrate B. Active site C. Enzyme

D. Products