stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Bio 120 Exam 1 (Unit 1-5) Flashcards | StudBud
Explore
/
Bio 120 Exam 1 (Unit 1-5)
Bio 120 Exam 1 (Unit 1-5)
66 terms
·
StudBud Administration
·
136 plays
Imported from external platform
Flashcards
66 cards
F
Practice quiz
P
Host live
L
Questions
66
Answers
1
If a side chain has anegative charge, then...
it is basic and hydrophilic
is nonpolar and hydrophobic
uncharged polar and hydrophilic
is acidic and hydrophilic
2
What is natural selection?
how animals survive in the world
survival of the fittest
how evolution occurs
the pass down of genetics
3
How many basic structures are there for a protein
4
2
3
5
4
what is the difference between RNA and DNA
rna has thymine and not uracil
DNA only has cytosine
RNA has Adanine and not guanine
RNA has uracil and not thymine
5
What is the third structure of a protein?
Primary
Tertiary
Quartenary
Secondary
6
what type of interatcion in a protein is the weakest
Hydrogen bonds
Van der Waals interactions
Covalent disulfide bonds
ionic
7
What is the Primary Structure of a protein
bonding of two or more distinct polypeptide subunits
the result of more interactions
formed by hydrogen bonds
the unique sequence of amino acids
8
what are chromosoms
are molecules of DNA (hereditary material)
Deoxyribonucleic acid
segments of DNA that code for cell products
RNA
9
What are Enzymes
separates substrates
bring substrates together to make a reaction more likely to occur
prevents reactions
10
What is a theory?
is facts
It answers a question
Supports a question
the explanation for phenomena that is supported by a wide body of evidence
11
what do carbohydrates do
provide fibrous structural materials
indicate cell id
store chemical energy
serve as precursors to larger molecules, eg. nucleotides
12
what is a condensation reaction?
which breaks polymers apart by adding a water molecule
dehydration synthesis
Increases entropy, Release energy, Exergonic
the loss of a water molecule
13
What is the Charge of a proton?
neutral
positive
polar
negative
14
an aldose is a carbonyl group at the end of a carbon chain
False
True
15
What is speciation?
when populations diverge to form new species
ability of an individual to produce offspring
Evolutionary change occurs
Natural selection acts
16
What do covalent bond do?
become polar
Share electrons
give an electron
take an electron
17
Why is a virus not alive?
it has creepy legs
It is a bacteriophage
There are two ways it can reproduce
It cannot reproduce by its self
18
Which of the following properties of a protein is least likely to be affected by changes in pH?
Secondary Structure
Tertiary Structure
Net Charge
Primary Structure
19
what is Phylogeny
organisms that describes the genealogical relationships among species
the tree of life
genealogical relationships among all organisms
study RNA and DNA
20
what is a solute
dissolved into a solvent makes a solution
a thick dense liquid
a solid
likely to react when they are dissolved in a solvent like water
21
Which one is not what happens when a mistake is made?
Strand is broken off
DNA change
potential protein change
changes in outward appearance/traits
22
What is in the binomial nomenclature?
Genus and Species
Kingdom and Species
Genus and Phylum
Phylum and Kingdom
23
What is the Spontaneous Generation theory
Francesco Redi challenges spontaneous generation
Obsolete theory suggesting living organisms arise from inanimate objects
you forget where you put it and now remember
tests the effect of a phenomenon
24
Adhesion versus Cohesion
Adhesion goes towards surfaces, cohesion doesn't
Adhesion attaches to each other, while cohesions doesn't
Cohesion is water-loving, will attach to water
Adhesion is water-loving, will attach to water
25
What are the functional groups for proteins?
Amino groups
1.Carbonyl groups
1.Phosphate groups
Carboxyl groups
26
All hydrophobic amino acids (valine, leucine, isoleucine, etc.) share which of the following properties?
Nonpolar Uncharged R group
Polar Uncharged R group
Acidic R group
Basic R Group
27
This Amino Acid is Basic
True
False
28
most organisms lack
proteins
enzymes
allels
chitin
29
starch is hydrolyzed by amalase enzymes
False
True
30
A polypeptide with a net positive charge at pH (~7.4) most likely contains amino acids with R groups of what type?
Acidic R Group
Aliphatic R Group
Basic R group
Aromatic R Group
31
What are the theories of Biology?
Cell theory and Theory of inheritance
Cells, Replication, Information, energy, evolution
Cells, Replication, chromosomal theory of inheritance
Chromosomal Theory of Inheritance, Cell theory, Theory of evolution
32
What is a Hypothesis?
allows researchers to test the effect of a factor on a phenomenon
observable results that must be corrected if a hypothesis is valid
a testable statement that equals something observed
suggesting living organisms arise from inanimate objects
33
Amino Acids are joined by a peptide bond
True
False
34
What is polymerization
The process of linking monomers together
increases entropy and is favorable energetically
breaking polymers apart by adding a water molecule
loss of water molecules
35
which one is a in complete functional form
Oligopeptides
amino acids
Proteins
Polypeptides
36
Hydrophillic is water loving
True
False
37
Tomatoes are more Basic?
True
False
38
what is cellulose
used for structure support in cell walls of fungi and external skeletons
used for structural support in bacterial cell walls
used for structural support in cell walls of plants and algae
39
Energy stored in GLucose is used to make ATP
True
False
40
what are carbohydrates
sugar
galactose
protein
starch
41
glucoproteins are
carbs attached to enzymes
carbs attached to proteins
carbs attached to lipids
carbs attached to sugar
42
Which one does not happen to substances in a Chemical reaction
Broken down (disassociate)
Charge changes
Chemical bonds are broken and new bonds form
Combined
43
what is the cell theory?
suggesting living organisms arise from inanimate objects
All cells come from preexisting cells
All organisms are made of cells
organized compartment bound by plasma membrane
44
what is the atomic weight
Average of all the masses of the naturally occurring isotopes
Number of protons in the nucleus of the atom
the number of protons an neutrons
Isotopes
45
Entropy means order
False
True
46
This Amino Acid is Polar
False
True
47
what are the fundamental characteristics of life?
Cells, replication, evolution
Cells, Replication, Information, energy, evolution
energy, evolution and information
The Cell Theory, THeory of Chromosomal Inheritance
48
What is the difference between the cell theory and theory of evolution by natural selection?
The cell theory talks about where cells come from
They are the same
cell theory - the formation and theory of evolution - where cells come from
how heredity information is transmitted
49
The alpha helix is an example of which of the following structural properties of proteins?
Quarternary
Secondary
Tertiary
Primary
50
the COOH part of a protein is an amino functional group
True
False
51
what is the difference ionic and hyrdogen bonds
are either polar or nonpolar
ionic bonds give/take electrons, hydrogen bonds are attractions b/w atoms
ionic bonds are attractions b/w atoms, hydrogen bonds give/take electrons
ionic bonds are always polar, hydrogen bonds are always nonpolar
52
what are the building blocks of DNA?
DNA, Rna, Proteins
mRNA
Adenine, Cytosine
Adenine, Thymine, Cytosine, and Guanine
53
what is the atomic number?
Number of protons in the nucleus of the atom
the number of protons an neutrons
number of electrons and protons added together
number of neutrons in the nucleus
54
quartenary protein strucure can be a group of proteins?
True
False
55
WHich one is not a functional group?
Peptide Group
Hydroxyl groups
Sulfhydryl groups
Amino groups
56
Amino Acids link together to form
proteins
sugar
carbs
lipids
57
what is a polymer
Made up of many monomers
an amino acid
an atom that can be found on the ptable
a molecule
58
What are the types of atoms make up 96% of matter in organisms
Sodium and Chloride
hydrogen and oxygen
Natural Gasses
hydrogen, carbon, nitrogen, and oxygen
59
What is the Central Dogma?
The building blocks of DNA
Adenine, Thymine, Cytosine, and Guanine
RNA and DNA
DNA --> RNA --> Proteins
60
What is the Energy source our body uses?
carbs
DNA and RNA
atp
glucose
61
What does the body use to make ATP
sucrose
glucose
protein
carbs
62
How many amino acids are there?
10
23
46
20
63
Louis Pasteur’s hypothesis tested
dust exists in the air
flies will lay eggs on meats
he can use cool tubes in his experiements
Spontaneous Generation
64
What is fitness
trait that increases the fitness of an individual
survival of the fittest
how evolution occurs
ability of an individual to produce offspring
65
HIGH specific heat
liquid to gas
raise the temperature
66
What is a prion
regulate by controlling when or where they are folded into active shapes
it folds the protein into an ordered, active conformation
improperly folded forms of normal proteins
