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bio 3006 > BIO midterm; chem, biochem, > Flashcards

BIO midterm; chem, biochem, Flashcards

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Biology 101 flashcards
1
Q

Matter is..

A

Stuff of nature; mass and occupies space

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2
Q

Matter is three forms

A

solid liquid gas

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3
Q

matter is composed of

A

atoms

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4
Q

atoms create

A

elements

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5
Q

Elements organized in a chart is called:

A

the periodic table of elements

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6
Q

Periodic table is a number of______ in each element are grouped by major minor and ____ elements

A

subtomic particles , trace elements

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7
Q

6 MAJOR ELEMENTS

A

Oxygen
carbon
nitrogen
hydrogen
calcium
phosphorus

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8
Q

6 MINOR ELEMENTS

A

Potassium
sodium
chlorine
iron
magnesium
sulfur

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9
Q

Atoms are

A

subtomic particles
(protons neutrons electrons) have charge

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10
Q

Mass is expressed as

A

atomic mass unit (amu) or daltons

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11
Q

Proton/neutron have the mass of

A

1 amu

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12
Q

Protons have a

A

postitive hage of +1

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13
Q

neutrons have a

A

NO CHARGE (NEUTRAL)

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14
Q

Protons and neutrons are the center of??

A

an atom the nucleus

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15
Q

atoms nuclei are

A

positively charged

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16
Q

electrons_____ the nucleus

A

orbit/orbitals

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17
Q

number of protons is called

A

the atomic number

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18
Q

P+#N=

A

atomic mass

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19
Q

the number of electrons is determined by the

A

atomic number

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20
Q

all atoms have

A

zero net charge

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21
Q

negative charged particles =

A

the number of protons positively.

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22
Q

= number of protons with a different number of neutrons are

A

isotopes

23
Q

carbon 13 and 14 are

A

a net charge

24
Q

radioactive isotopes release…..

A

radiation

25
Q

PTE Column VIIA have

A

8 electrons in valance shells. very stable!!

26
Q

Column VIIA are

A

noble gases

27
Q

Ions are

A

formed by element gaining or losing electron

28
Q

Covalent bond is formed when

A

two atoms share an election in valance shell

29
Q

chemical compounds are

A

stable associations between two or more elements

30
Q

ionic compounds are bound together by

A

ionic bonds

31
Q

ionic bonds are

A

electrostatic in nature

32
Q

ionic bonds have positive and negative charge depending on

A

GAINING an electron or loosing an electron

33
Q

Covalent bonds

A

exist between atoms that share electrons (OCTET RULE) these are molecules

34
Q

Molecular compounds

A

two or more diff element H2O

35
Q

Chemical Compounds

A

stable associations between two or more elements in the body

36
Q

chemical compounds are either

A

ionic or molecular

37
Q

ionic compounds are bound together by

A

ionic bonds

38
Q

cations

A

atoms with 1, 2, 3 valent electrons

39
Q

anions

A

atoms of 5,6,7 valent electrons

40
Q

Bonds between two or more atoms are

A

polyatomic ions HCO3 Bicarbonate

41
Q

Covalent bonds

A

exist between atoms that share an electron to create chemicals stable
are molecules

42
Q

elements to form covalent bonds are

A

Hydrogen, Oxygen, Nitrogen, Carbon

43
Q

carbon can form

A

4 covalent bonds

44
Q

carbon skeleton can be

A

linear braided or ring form

45
Q

non-polar covalent is when

A

atoms share electrons equally
occur between atoms

46
Q

amphipathic molecule

A

large molecure that contains both non-polar and polar patterns

47
Q

water is a

A

universal solvent
salts acids bases dissolve in water
polar organs dissolve in water but remain intact

48
Q

Molarity

A

number of moles per filter

49
Q

molality

A

moles per kilogram of solvent

50
Q

osmolarity

A

number of particles in 1 liter

51
Q

osmolality

A

number of particles in 1 kg of water

52
Q

Nucleic acids

A

DNA,RNA,ATP

53
Q

four classes of organ bio macromolecules:

A

variation of H and functional groups
dehydration synthesis and digested through hydrolysis
polymers except for lipids

54
Q

Lipids are

A

fatty non water soluble molecules (steroids)

bio 3006 (7 decks)

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