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Full Midterm Flashcards. Stony.Erster | BIOL 118 - Intro:Cell&Molecular Bio (DIS), Quizzes of Biology

Class: BIOL 118 - Intro:Cell&Molecular Bio (DIS); Subject: Biology; University: SUNY at Binghamton; Term: Spring 2011;

Typology: Quizzes

2010/2011

Uploaded on 08/14/2011

warren-lin7
warren-lin7 🇺🇸

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TERM 1
name the 4 atoms that make up most matter
in organisms
DEFINITION 1
hydrogen, carbon, nitrogen, oxygen
TERM 2
how many elements does life require
DEFINITION 2
25
TERM 3
what are trace elements
DEFINITION 3
elements required in minute amounts
TERM 4
there are how many naturally occurring
elements?
DEFINITION 4
92
TERM 5
how many natural+artifical elements are
there?
DEFINITION 5
107
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name the 4 atoms that make up most matter

in organisms

hydrogen, carbon, nitrogen, oxygen

TERM 2

how many elements does life require

DEFINITION 2

TERM 3

what are trace elements

DEFINITION 3

elements required in minute amounts

TERM 4

there are how many naturally occurring

elements?

DEFINITION 4

TERM 5

how many natural+artifical elements are

there?

DEFINITION 5

what percent of O, C, H, N makes up the

human body?

O - 65C - 18.5H - 9.5N - 3.

TERM 7

mass of electron is = 1/ _____ of the mass of

proton

DEFINITION 7

TERM 8

atomic number

means

DEFINITION 8

# of protons

TERM 9

atomic mass means

DEFINITION 9

# protons + # neutronsall in "daltons" (amu)

TERM 10

what are isotopse?

DEFINITION 10

atomic forms of the same element with different numbers of

neutrons

what happens to the electron in a nonpolar

covalent bond?

the electron is shared equally. neither atom is polar so

neither pulls the electron closer to it

TERM 17

what is an ion?

DEFINITION 17

an atom that has a chargeusually because the atom was so

polar it stripped an electron or gave it away from another

electron

TERM 18

what are ionic compounds?

DEFINITION 18

a chemical bond resulting from the attraction b/t oppositely

charged ions

TERM 19

what are 2 types of ionic bonds by their

environment?

DEFINITION 19

dry - bonds are strong (salt crystals form)wet - bonds are

weak (salt crystals dissolve in water)

TERM 20

how is a hydrogen bond formed?

DEFINITION 20

when a hydrogen atom covalently bonds to two

electronegative atoms at the same time

what are van der waals

interactions?

the weak attraction from atoms very close together from

fleeting charge differences

TERM 22

what are chemical

reactions?

DEFINITION 22

the making and breaking of chemical bonds