Advertisement Upgrade to remove ads

chemical basis of life

chemistry

science that investigates matter and its interactions

element

all atoms with the same atomic #

recognize elements of the periodic table,examples:

K-potassium, O- oxygen, N- nitrogen

how many elements are known to be needed by living things?

26 elements

over 95% of the human body is made up of what four elements?

oxygen, hydrogen, carbon, nitrogen

list the parts of the atoms

protons, nuetrons, electrons

what is the characteristic of a proton in a atom

posotive charge and found in the nucleus

what is the characteristic of a nuetron in a atom

no charge found in the nucleus

what is the characteristic of a electron in a atom

negative charge and found on the outer shell

isotope

forms of an element whos atoms contain the same number of protons and nuetrons

gamma rays

the most penetraining form of radiation

which istope has the longest half life?

Ra, Radon

what isotope is used for thyroid treatment

iodine-131

what happens to electrons in a covalent bond

sharing of electrons

what happens to electrons in an ionic bond

transfer of electrons

what is different about a hydrogen bond?

weak negative charge

catabolism

takes place in an endergonic reaction

anabolism

tekes placei n a exoganic reaction

enzyme

a protien

what is an enzymes function?

catalyzes a biochemical reaction

acid

any substance that breaks apart in a solution to release hydrogen ions

base

a substance that removes hydrogen ions from a solution

pH scale

<-1---------------------------7-------------------------------14->
extreme nuetal extreme
acid base

whats the difference in concentration from one step to another on the pH scale

its either more of a base or one step more toward an acid

acidosis

conditions of an acid

alkalosis

condition of alkaline (basic)

what are the 4 inorganic constituents of the body?

H2O, O2, CO2, salts

what is the function of the inorganic constituent H2O

stabalizes, body temperature, protection, lubracants

what is the function of the inorganic constituent O2

cellular organelles use O2 to release energy from glucose and other nutrients

what is the function of the inorganic constituent CO2

reacts with H2Oto form weak acid which ionizes

what is the function of the inorganic constituent salts

transports thing out of cells, maintains prople water concentration

carbohydrate

organic compound containing carbon, hydrogen and oxygen in a specific ratio

functions of a carbohydrate

provides energy for cells; stored as reserved energy

lipid

inorganic compound containing carbons, hydrogens and oxygens in a ration that does not approximate in 1:2:1

examples of lipid

fats, oils and waxes

what is the most common lipid?

fats

what are two steroids

cholestral and sex hormones

protien

a large polypeptide with a complex structure

what are the function of a protien

support structural materials for 3-d framework transprots hormones

protien denaturing

it makes the protiens lose its 3-d structure

what causes protien denaturing

high temp.

nucleic acid

a chain of nucleotides containing a 5 carbon sugar, a phosphat group and one of four nitrogen bases that regulate

what are the functions of nucleic acid

strong and also process information

what is DNA

deoxiribonucleic acid

what is RNA

ribosnucleic acid

deoxyribonucleic acid

stored info for cells to synthesize protien molecules, inherited characteristics

ribosnucleic acid

specific protien synthesis

what base pairs are associated with nucleic acid

thymine, adenine, unacil, guanine, and cytosine

what is the most important high energy compound for our cells

ATP

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set