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WorksheetsQuizziz Bio. 1 Ch. 6: Chemistry In Biology
Total questions: 20
Worksheet time: 40mins
Which is the negatively charged particle located outside the nucleus of an atom?
neutron
proton
electron
muon
Which of the following is the best description of activation energy?
Heat stored within the reactant molecules.
Heat released as the reaction proceeds.
Heat stored within the reactant molecules.
Heat added to initiate (start) a reaction.
These are the ending substances in a chemical reaction:
reactants
products
organics
active sites
These are the starting substances in a chemical reaction:
reactants
products
organics
active sites
When an iron nail rusts, what is one product?
iron
oxygen
iron oxide
water
In an EXOTHERMIC chemical reaction:
energy is created
energy is absorbed
energy is destroyed
energy is released
Which of the following is an example of a chemical reaction?
water evaporating
iron rusting
sugar dissolving in water
ice melting
Which of the following is NOT a property of water:
It is an element.
It displays adhesion.
It is a Universal Solvent.
It is a polar molecule
Cohesion is a property of water that:
Makes molecules of water stick to a surface.
Makes molecules of water degrade.
Makes molecules of water stick to each other.
Makes molecules of water evaporate.
Glycogen, (stores energy in the liver & muscle), is an example of which type of molecule?
carbohydrate
lipid
protein
nucleic acid
In humans & other multi-cellular organisms, which substance plays a central role as an energy source?
nucleic acids
triglycerides
carbohydrates
nucleotides
Which of the following represents a formula for a chemical compound?
He
C
P
H2O
Every individual water molecule acts like a little "magnet" because of:
ionic bonds
covalent bonds
polar molecules
Van der Walls bonds
Steroids (natural ones made by the body) fit into this category of biological macromolecules:
lipids
carbohydrates
proteins
nucleic acids
This acts like a chemical "coach"- it is not directly used in a chemical reaction.
substrate
active site
catalyst
product
These 2 parts to an enzyme must fit like a lock & key:
substrate & pH
active site & reactants
substrate & adhesion
active site & substrate
This element is found in all LIVING THINGS:
water
carbon
silicon
calcium
This occurs when atoms are reorganized into different substances:
chemical reaction
nuclear explosion
isotopes
triglycerides
These are biological catalysts:
elements
enzymes
atoms
products
These are large organic molecules:
isotopes
atoms
enzymes
macromolecules
