Bio
How many difference kinds of amino acids are there?
20
What percentage of the cytoplasm is composed of organic material?
22
What is the ratio of hydrogen atoms to oxygen atoms in a molecule of glucose?
2:1
Which row in the chart below correctly pairs a food molecule with its building block?
3
What percentage of the human body is composed of inorganic material?
68%
Molecule A and B most likely represent
A receptor and a hormone
Which set of molecules is best represented by letters A and B?
A: carbon dioxide and water B: glucose
The basic building blocks of a protein are
Amino Acids
he substance labeled "catalyst" is also known as...
An enzyme
Which statement represents a valid conclusion based on the data?
An ounce of fat contains almost twice as many calories as an ounce of protein
Which formula represents an organic compound
C12H22O11
Enzymes are a type of
Carbohydrate
Glucose molecules are the building blocks of what class of macromolecule?
Carbohydrates
Animals commonly store energy in the form of
Fat and glycogen
In the living cell, which compound serves primarily as a substance in which most molecules and ions are dissolved
Glucose
A disaccharide combines with water to produce two monosaccharides in the process known as
Hydrolysis
Which chemical reaction is represented by the diagram below?
Hydrolysis of a disaccharide
In plants, simple sugars are least likely to be
Linked together to form proteins
Butter and oil are examples of food composed of
Lipids
What is the name of the bond linking amino acids together
Peptide bond
Which group consists entirely of organic molecules
Protein, Starch, Fat
Substances X and Y are examples of which kind of molecule?
Simple Sugar
In an autotrophic organism substance B function as a
Source of energy
Which of the following is not one of the main classes of macromolecules within cells? Carbohydrates, proteins, nucleic acids, water?
Water
Order
cell tissue organ organism organelle
Water is classified as an inorganic compound because it
does not contain carbon
What are the building blocks of lipids
fatty acids and glycerol
fat + water -------
lipase
The hydrolysis of maltose is catalyzed
maltase
Glucose + ____________
monosaccharide
The activity of which enzyme decreases in both acidic and basic environments
pepsin
The function of a specific enzyme is most directly influence by its
physical shape
Big picture: Process is known as
protein synthesis
Even though human proteins are synthesized from only 20 difference amino acids, there are thousands of difference proteins found in human cells. This great variety of proteins is possible because the
sequence and number of amino acids can be different in each protein
The shape of each of the molecules is important because
the shape of a molecule determines how it functions in chemical reaction.
Which substance is an inorganic molecule
water
