Characteristics of Life
Chemistry (Atoms and Bonding)
Acids and Bastes
Macromolecules
Carbohydrates
100
The 7 characteristics of Life
What is cells, metabolism, homeostasis, reproduction, growth & development, response to environment, evolution?
100
How many hydrogen molecules are in water? How many oxygen?
two hydrogen, one oxygen
100
The universal solvent is...
What is water?
100
What are the 4 major macromolecules?
Carbohydrates, proteins, lipids, and amino acids.
100
Examples of Carbs
sugars, starches, glycogen, and cellulose
200
Cells are...
the smallest unit of life
200
What is the charge of protons, neutrons, and electrons?
protons- positive
neutrons- neutral
electrons- negative
200
What is the pH scale (range).
What is neutral?
1-14
7 is neutral.
200
How many bonds can carbon make?
4 bonds.
200
True or False- glucose is a monomer
TRUEEEEE!
300
two different types of reproduction
sexual reproduction, asexual reproduction
300
The 1st outer shell has _ electrons.
The 2nd layer has _ electrons.
The 3rd layer has_ electrons
2, 8, 8
300
The pH scale measures...
The amount of H+ and OH- ion concentration in a solution.
300
What its an example of a lipid?
Fats/waxes
300
True or false- carbohydrates support long term energy.
FALSEEEE- they support SHORT TERM energy.
400
One example of homeostasis.
When the body is hot, it sweats to cool off, maintaining its internal temperature.
400
An ionic bond is...
and give an example
formed when atoms are transferred from one atom to another, each atom ends up with a full outer electron shell
NaCl is an example of an ionic bond.
400
What makes a solution acidic? What makes a solution basic/alkaline?
An acidic solution has a higher H+ ion concentration.
A basic/alkaline solution has a higher OH- ion concentration.
400
What is a monosaccharide, disaccharide, and polysaccharide?
monosaccharide- simplest forms of sugar, most basic unit
disaccharide- made of two monomers
polysaccharide- made of many monomers
400
Cellulose is...
structural support for plant cells, a polysaccharide
500
what is the name of the body's energy currency?
What is ATP?
500
A covalent bond is...
and give an example
formed when atoms SHARE ELECTRONS, each atom ends up with a full outer shell of electrons
water is an example of a covalent bond
500
What is the job of a buffer?
helps maintain a relatively constant pH by taking up or releasing extra H+ or OH- ions
500
What is the process where waters removed and a bond is formed? Macromolecules are formed by...
Dehydration synthesis
500
Is butter a carb?
Regina says yes, but she IS WRONG! Butter is in fact a lipid.