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Duplicate of L102 Exam 1 Flashcards | StudBud
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Duplicate of L102 Exam 1
what are neutrons?
what is a biosphere?
Duplicate of L102 Exam 1
34 terms
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exam 1
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Answers
1
what is a biosphere?
all life on earth and places where life exists
an individual living thing
all living things in a particular area
all the deer in a forest
2
what are neutrons?
positive particles in nucleus
particle with no charge in nucleus
negative particles in outer shell
positive particles in outer shell
3
what is cohesion dealing with water?
water molecules sticking to water molecules
water molecules sticking to carbon molecules
4
describe a Eukaryotic cell
bacteria
have a nucleus
have membrane bound organelles
animals
5
what is the atomic number?
number of neutrons
total mass of atom
number of protons and electrons
6
what is an ecosystem?
individual living thing
all life on earth
all individuals in a certain area
all living things in a particular area
7
describe a prokaryotic cell
bacteria
no membrane bound organelles
no nucleus
animals
8
what is matter?
chair
anything that has mass and takes up space
cup
table
9
what are examples of trace elements?
hydrogen
oxygen
iodine
iron
10
what is an isotope?
2 atoms with same number of protons and different neutrons
2 atoms with same number of neutrons and different protons
11
what is a saturated fat?
fish and plant oils
liquid at room temp
animal fat
solid at room temp
12
True or false. prokaryotic cells and eukaryotic cells have different metabolic processes
true
false
13
what is a population?
array of organisms in a ecosystem
all the mule deer in a forest
a fox in the forest
all life on earth
14
what bond gives away electrons completely?
covalent
hydrogen
ionic
15
what is primary structure of a protein?
alpha helix sheet
linear chain of amino acid
3-D shape
beta pleated sheet
16
what bond is sharing of electrons?
hydrogen
covalent
ionic
17
what is a controlled experiment?
an experiment where nothing is manipulated
an experiment with an experimental group and a control group
an experiment where both factors are changed
18
what makes up a nucleotide?
a carboxyl group, a phosphate group, and a base
a nitrogenous base and a carboxyl group
a nitrogenous base and a 5 carbon sugar
a 5 carbon sugar, nitrogenous base, and phosphate group
19
what is an electron?
none of the above
negative particles in nucleus
negative particle in outer shell
positive particle in outer shell
20
why are buffers important?
makes our body super warm all the time
they arent
keeps our pH around 7
they keep our pH around 2
21
what is an atom?
substance that cant be broken down by chemical reactions
substance made of two or more elements
anything that has mass and takes up space
smallest unit of matter that still holds the properties
22
what is one of the 4 main common elements that compose humans?
nitrogen
iodine
iron
calcium
23
what is the scientific theory?
more evidence than hypothesis
educated guess
broader than hypothesis
24
what is a proton
particles with negative charge inside a nucleus
particles with no charge
particles with positive charge outside a nucleus
particles with positive charge in a nucleus
25
what is dehydration synthesis?
water is removed
monomers form polymers
polymers break to form monomers
water is added
26
what is the monomer of nucleic acids?
amino acids
lipids
sugars
nucleotides
27
what is a molecule?
2 or more atoms held together by covalent bonds
2 elements combined
anything that has mass and takes up space
hydrogen bonds
28
what are trace elements .
carbon
required by organisms in small amounts
oxygen
required by organisms in large amounts
29
what is a monomer compared to a polymer?
monomers make up polymers
polymer makes up monomers
30
what is the scientific method?
a theme in biology
an experiment that has a control group
a recipe or cookies
order scientists do research
31
are lipids hydrophobic or hydrophilic
hydrophilic
hydrophobic
32
solute vs solvent
they're both liquids in a solution
solute is the solid and solvent is the liquid in a solution
they're both solids in a solution
solute is the liquid and solvent is the solid in a solution
33
what is an element?
substance that cant be broken down by chemical reactions
2 of more atoms combined
smallest unit of matter
2 or more different elements combined
34
what is a compound?
2 or more atoms held together
a type of bond
substance of 2 or more elements combined in fixed ratios
smallest unit of matter
