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L102 Exam 1
what is the scientific method?
what do chloroplasts do?
L102 Exam 1
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exam 1
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1
what do chloroplasts do?
brain of the cell
where photosynthesis takes place
controls protein production
help with cellular respiration
2
what is the scientific method?
an experiment that has a control group
a theme in biology
order scientists do research
a recipe or cookies
3
what is a molecule?
hydrogen bonds
2 or more atoms held together by covalent bonds
anything that has mass and takes up space
2 elements combined
4
what is secondary structure of a protein?
3-D shape of proteins
alpha helix or beta pleated sheet
none of these
single line of amino acids
5
what is a compound?
smallest unit of matter
substance of 2 or more elements combined in fixed ratios
a type of bond
2 or more atoms held together
6
describe a Eukaryotic cell
have membrane bound organelles
have a nucleus
bacteria
animals
7
what is an ecosystem?
all living things in a particular area
all life on earth
individual living thing
all individuals in a certain area
8
what does mitochondria do?
cellular respiration
makes lipids
makes proteins
holds the cells' structure
9
Is DNA or RNA antiparallel and what does it mean?
DNA, run in opposite directions
RNA, run in opposite directions
RNA run in same direction
DNA, run in same directions
10
what is the function of ribosomes?
powerhouse of the cell
makes proteins
control genes
holds the shape of the cell
11
describe a prokaryotic cell
no nucleus
bacteria
animals
no membrane bound organelles
12
what is a light microscope?
studies internal structures of organisms
studies topography of organism
visible light is passed through specimen and glass lenses
13
what is a controlled experiment?
an experiment where both factors are changed
an experiment with an experimental group and a control group
an experiment where nothing is manipulated
14
what is tertiary structure of a protein?
a single line of amino acids
2 or more polypeptides
3-D shape
beta pleated sheet
15
what makes up a nucleotide?
a carboxyl group, a phosphate group, and a base
a nitrogenous base and a 5 carbon sugar
a 5 carbon sugar, nitrogenous base, and phosphate group
a nitrogenous base and a carboxyl group
16
what is the structure of DNA called?
double helix
double ladder
single stranded
single helix
17
what are neutrons?
particle with no charge in nucleus
negative particles in outer shell
positive particles in nucleus
positive particles in outer shell
18
What is DNA and its role?
double stranded
controls protein synthesis
recipe book for cell
directions for replication
19
how can you get ADP?
add a phosphate to ATP
remove a phosphate from ATP
remove a phosphate from ADP
20
what is the atomic number?
number of protons and electrons
number of neutrons
total mass of atom
21
what is RNA and its role?
double strand, blueprint for cell
double strand, takes recipe of protein to ribosome
single strand, takes recipe of protein to ribosome
single strand, controls cell
22
what is an element?
substance that cant be broken down by chemical reactions
smallest unit of matter
2 of more atoms combined
2 or more different elements combined
23
what is an atom?
anything that has mass and takes up space
substance made of two or more elements
substance that cant be broken down by chemical reactions
smallest unit of matter that still holds the properties
24
what is a population?
all life on earth
all the mule deer in a forest
a fox in the forest
array of organisms in a ecosystem
25
what does the smooth ER do?
powerhouse of the cell
synthesizes lipids
makes proteins
controls cell
26
what is the function of cytoskeleton?
powerhouse of the cell
supports the cell
anchors the organelles
helps with photosynthesis
27
what are examples of trace elements?
oxygen
hydrogen
iron
iodine
28
what is the function of the nucleus?
contains genes
holds water in the cell
information center
powerhouse of the cell
29
what is a saturated fat?
solid at room temp
animal fat
fish and plant oils
liquid at room temp
30
what is denaturation?
when an enzyme speeds up a chemical reaction
when proteins work twice as strong
- when proteins bonds weaken and they unravel
when an enzyme stops a chemical reaction
31
what is a biosphere?
all life on earth and places where life exists
all the deer in a forest
an individual living thing
all living things in a particular area
32
what is the scientific theory?
broader than hypothesis
more evidence than hypothesis
educated guess
33
True or false. prokaryotic cells and eukaryotic cells have different metabolic processes
false
true
34
what bond gives away electrons completely?
covalent
hydrogen
ionic
35
what does the lysosome do?
makes lipids
modifies and stores products from the ER
powerhouse of the cell
digests and recycles old cell's organisms
36
what is cohesion dealing with water?
water molecules sticking to water molecules
water molecules sticking to carbon molecules
37
why are buffers important?
they arent
keeps our pH around 7
makes our body super warm all the time
they keep our pH around 2
38
what is the function of the flagellum?
detoxifying cell
movement
cellular respiration
photosynthesis
39
what is the transmission electron microscope?
allows us to just see the top of the organism
allows us to see the internal structures of cells
40
what is matter?
chair
table
anything that has mass and takes up space
cup
41
what is a monomer compared to a polymer?
monomers make up polymers
polymer makes up monomers
42
what is dehydration synthesis?
water is added
water is removed
monomers form polymers
polymers break to form monomers
43
solute vs solvent
solute is the liquid and solvent is the solid in a solution
they're both liquids in a solution
they're both solids in a solution
solute is the solid and solvent is the liquid in a solution
44
What is ATP?
energy for the cell
ADP
an organelle
the powerhouse of the cell
45
what bond is sharing of electrons?
covalent
hydrogen
ionic
46
what are trace elements .
required by organisms in large amounts
required by organisms in small amounts
carbon
oxygen
47
what is the function of the rough ER?
helps with photosynthesis
powerhouse of the cell
secretes proteins
is the membrane factory
48
What is the function of the cell membrane and cell wall?
cellular respiration
allows certain things to come in and out of cell
support and shape
separates cell from outside
49
what is one of the 4 main common elements that compose humans?
iron
nitrogen
calcium
iodine
50
what is primary structure of a protein?
beta pleated sheet
3-D shape
alpha helix sheet
linear chain of amino acid
51
How is the structure of DNA different than the structure of RNA?
DNA has 2 strands and RNA has 1 strand
DNA has 1 strand and RNA has 2 strands
RNA has 3 strands and DNA has 2 strands
they don't differ, they both have 1 strand
52
what can the golgi apparatus be compared to?
your muscles
your bones
your brain
post office
53
are lipids hydrophobic or hydrophilic
hydrophilic
hydrophobic
54
where are cell walls found? whats the structure?
animals, support the cell
animals, makes proteins
plants, supports the cell
plants, help with protein production
55
what is the monomer of nucleic acids?
nucleotides
amino acids
sugars
lipids
56
what is the function of the cytoplasm?
helps with protein synthesis
fills the nucleus
fills the cell, jellylike
helps with cell movement
57
what is an isotope?
2 atoms with same number of protons and different neutrons
2 atoms with same number of neutrons and different protons
58
What is the function of the nuclear membrane?
helps with cellular respiration
helps with DNA synthesis
encloses nucleus, separates it from cytoplasm
helps with cellular communication
59
what is an electron?
none of the above
negative particles in nucleus
negative particle in outer shell
positive particle in outer shell
