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Characteristics of Life
Properties of Water
Biomolecules
Proteins and Enzymes
Grab Bag
100
Apart from bits of matter, this is the other thing you get from your food and which all living things need to survive.
Energy
100
When droplets of water stick to a wall, this demonstrates which property of water?
Adhesion
100
Which type of biomolecule is starch?
Carbohydrate
100
What is an enzyme?
A protein catalyst.
100
When water sticks to itself and forms drops, this is called...
Cohesion
200
A squirrel sees a cat and runs away. This is an example of...
Responding to an environmental stimulus.
200
Which property of water allows organisms regulate their temperature more easily?
High specific heat
200
Which type of biomolecule is fat?
lipids
200
What is a catalyst?
Something which speeds up a particular chemical reaction.
200
What is the shape of a carbohydrate monomer?
A ring
300
All living things rely on other life forms to survive, living as members of a(n)...
Ecosystem/community
300
What type of relatively weak bonds are typically formed between nearby water molecules?
Hydrogen bonds
300
What is the monomer for nucleic acids?
Nucleotides
300
What does it mean for a protein to "denature?"
It loses its shape permanently and no longer functions.
300
Each type of protein is unique based on which two facts about it?
It's amino acid sequence and how it's folded.
400
An amoeba clones itself, splitting into two daughter amoebas. This type of reproduction is called...
Asexual reproduction
400
Which atom(s) on a water molecule has a greater affinity for electrons?
Oxygen
400
What are two functions of lipids?
Cell membranes structure, energy storage, insulation.
400
What two factors may cause a protein to denature?
Heat and extreme pH
400
What is the basic unit of life?
The cell
500
What are two examples of internal conditions which organisms must maintain as part of homeostasis?
Temperature, salinity, pH, oxygen levels, blood sugar, water, calcium levels, toxin levels, and others.
500
Water is good at dissolving which type of solutes?
Polar
500
What are three functions of proteins?
Structure, transport, catalyzing chemical reactions, antibodies, and messengers.
500
What is an "active site?"
The spot on the enzyme where the substrate fits into.
500
Which element is the most essential to life as we know it, and why?
Carbon, because it can make up to four bonds with other atoms, and those bonds are not too strong or too weak.