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Final Exam BIO 189 pt.1 - Ziemba Flashcards | StudBud
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Final Exam BIO 189 pt.1 - Ziemba
Final Exam BIO 189 pt.1 - Ziemba
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Final Exam BIO 189 pt.1: CSN BIO 189
Flashcards
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Questions
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Answers
1
A nitrogen atom with 7 protons, 7 electrons and 8 neutrons has a mass of?
15
25
7
14
2
A covalent bond...
Does not share electrons
Shares electrons
Transfers Electrons
3
Why are sex hormones classified as lipids?
they are hydrophobic
they are polar
they are hydrophilic
they didn't know where else to put them
4
Define Solvent
Part of the solution being dissolves
Part of the solution that dissolves the solute
5
Which part of the cell is responsible for packaging and transporting substances made in the cell?
Centriole
Mitochondria
Endoplasmic Reticulum
Golgi Apparatus
6
Which part of the cell is made up of a network of filaments that maintains the cell structure?
Cytoplasm
Cytoskeleton
Endplasmic Reticulum
Vacuoles
7
In what direction are polypeptides built?
3-5
"C" terminus to "N" terminus
5-3
"N" terminus to "C" terminus
8
If a protein denatures to the primary structure it can still reform itself
True
False
9
What makes up the secondary structure of a protein?
The amino acid sequence
The hydrogen bonds between amino acid backbone
The interactions b/w polypeptides
The interactions between R- groups
10
Nitrogen has 7 protons, 7 neutrons, and 7 electrons. What is the atomic number of nitrogen?
7
0
21
14
11
Define Solute
Part of the solution that is being dissolved
Part of the solution that dissolves the solute
A mixture of 2 or more substances
12
In the tertiary stage of protein formation, where do the non-polar molecules go?
what's tertiary?
the outer edge of the protein
the inside of the protein
bind to R groups
13
Which bond is formed between amino acids
peptide
phosphodiester
polypeptide
glycosydic
14
What are the "little organs" of the cell?
Organelles
Cells
True
Cytoplasm
15
Entropy
Related to the first law of thermodynamics
related to the second law of thermodynamics
16
Enzymes change the ΔG of a reaction
True
False
17
Electronegativity Differences: Nonpolar Covalent?
>1.7
<0.5
>0.5-1.7
18
The central dogma of biology states - DNA → RNA → Protein
False
True
19
An essential amino acid must be
Used in the body
Eaten in food
Denatured after use
Built to survive
20
What is the double membrane that surrounds the nucleus?
Plasma membrane
Nucleolus
Nuclear envelope
Nuclear pore
21
What cell structure is circled in red?
Nucleic Acid
Nucleus
Nucleolus
Nucleotide
22
Which part of the cell makes substances that do NOT contain proteins?
Smooth Endoplasmic Reticulum
Robosomes
Rough Endoplasmic Reticulum
Nucleolus
23
What macromolecule is shown below?
Carbohydrate
Lipids
Nucleic Acid
Protein
24
The unusable energy is a measure of the disorder of the system and is called-
entropy
anthropology
enzyme
True
25
Hydrogen bonds are very?
Strong
Stiff
Weak
Flexible
26
What cell structure is circled in red?
Chloroplast
Centriole
Vacuum
Vacuole
27
What is cohesion?
The ability of water to defy gravity.
The ability of water to stick to other water molecules
The ability of water to stick to other substances
The fact that water has a positive and negative side.
28
What serves as "messengers" transporting substances throughout the cell?
Nucleus
Chloroplasts
Ribosomes
Vesicles
29
Non-polar Covalent bonds:
Share electrons equally
Do NOT share electrons equally
30
Does the substrate have to be specific to the active site?
Nonexistent
Both
Yes
No
31
What is the cell theory?
The cell is the basic unit of life
All cells are created from other cells
All of the above
That all organisms are made up of one or more cells
32
Metabolism is
the part of the enzyme that binds with a substrate
The sum total of all the chemical reactions in a living structure
A molecule that limits what gets into and out of cells
the reason I can't lose weight
33
Polar Covalent bonds...
Share electrons equally
Pull electrons closer
34
Term used when the end product of a metabolic pathway shuts down the entire pathway
Lock and key
Feedback inhibition
Competative inhibition
Hitting the brakes
35
What is this organelle? Function?
Golgi apparatus; modify, sort, & package proteins for cell
Smooth Endoplasmic Reticulum; Stores ions
Smooth Endoplasmic Reticulum; synthesize lipids
Golgi apparatus; synthesize proteins
36
Which portion of a phospholipid is hydrophilyic?
the phosphate head
The fatty acid tails
37
Van der Waals Forces are ________________.
Hanifa's Forces
Undefined Forces
Intermolecular Forces
Intramolecular Forces
38
Glyoxysomes are specialized peroxisomes found only in plants, aid breakdown of lipids into carbohydrates
False
True
39
The plasma membrane is semi-permeable- it allows all molecules to pass through
False
True
40
Ionic bonds ___________ electrons.
adopt
disappear
share
transfer
41
Ionic bonds are formed by....
Iron man
A metal and a metal
A nonmetal and a nonmetal
A metal and a nonmetal
42
Which 2 organelles prove the theory of endosymbiosis
Mitochondria, Centrioles
Sooth and Rough ER
Chloroplasts, Mitochondria
Chloroplasts, Golgi Apparatus
43
Is this a polar molecule?
I don't know
No
Yes
44
What is this organelle? Its function?
Chloroplast; makes lipids
Chloroplast; protects cell
Chloroplast; stores proteins
Chloroplast; where photosynthesis takes place
45
Van der Waals Forces are ________________.
Undefined Forces
Intramolecular Forces
Intermolecular Forces
Use the Force
46
Which of the following physical properties of water affect(s) life in some beneficial way?
Cohesiveness
All of the above
High heat capacity
Adhesion
47
This image is
amino acid
glucose
steroid
nucleic acid
48
Artificial Selection
Reproduction of a organism w/ special traits in a population
Becoming adjusted to different conditions
Process of organisms have adapted to the environment&survive
When someone pretends to choose an option
49
The most common elements in most living things are....
Oxygen, Carbon Dioxide, Hydrogen and Nitrogen
Oxygen, Carbon, Water, Lipids
Oxygen, Carbon, Hydrogen and Nitrogen
Oxygen, Carbon, Hydrogen and Calcium
50
What type of secondary structure is this
Turn
Alpha helix
sulfide bridges
Beta sheet
51
Which part of the cell is responsible for breaking down used organelles & waste in the cell by "digesting" them?
mRNA
Rough Endoplasmic Reticulum
Peroxisome
Lysosomes
52
These structures present in all cells: 1) Plasma membrane 2) Cytoplasm 3) Chromosomes 4) Ribosomes
True
False
53
Lipids are
all of these are correct
form the biological membrane
long term energy storage
hydrophobic
54
A fatty acid with double carbon bonds.
saturated fatty acid
unsaturated fatty acid
55
First Law of Thermodynamics
When energy is converted from one form to another
Capacity to do work
Energy can neither be created nor destroyed
Plant cellular respiration
56
In Metabolism what process is-- 1)building small to big 2)+G 3)endergonic 4)requires energy to start 5)Dehydration
catabolism
anabolism
57
What is intramolecular force?
A force that exist between atoms
A dipole-dipole interaction
A hydrogen bond
A force that pull atom together
58
Whats the primary structure of a protein?
Carbohydrates
Polypeptide chain
Lipids
Cells
59
A nitrogenous base with 2 rings is a-
Huh?
pyrimidine
purine
pyramid
60
What law states the total energy in the universe is constant?
1st law of thermodynamics
2nd law of thermodynamics
61
The part of the enzyme that binds with a substrate
Protein site
Catalyst site
Active site
Allosteric site
62
Hydrophillic is?
Water Loving
Water Neutral
Water Hating
63
Atomic Number
28
51.9961
Cr
24
64
How many valence electrons to complete an outer shell?
6
8
2
4
65
What molecule is this?
Steroid
Amino Acid
Triglyceride
Phospholipid
66
What lowers the activation energy require for a reaction?
enzymes
catabolism
hydrolysis
nucleosides
67
Which statement about the properties of life is
false
?
Organisms respond to stimuli from the environment
Organisms have the ability to take in energy and use it
Organisms have the ability to reproduce
Organisms have an unchanging, constant internal environment
68
Atomic Weight?
15
8
15.9994
16
69
What is the Universal Solvent?
Liquid
Water
Milk
Acid
70
What best describes allosteric inhibition?
Enzyme denatures due to drastic pH change
Inhibitor binds to site other than active site
Inhibitor binds to active site
Inhibitor lowers activation energy
71
How are Ionic Bonds formed?
formed between two atoms by the transfer of electrons
When two atoms share electrons evenly
When metals react with non-metals
When atoms collide
72
DNA has the bases guanine, cytosine, thymine, and adenine. In RNA, _______ is replaced by _______.
thymine, verapamil
thymine; uracil
cytosine, uracine
guanine, uracil
73
Protein structure is determined by its amino acid sequence.
False
True
74
Electronegativity Differences: Polar Covalent?
<0.5
0.5-1.7
>1.7
75
Homeostasis means
maintaining stable conditions inside a home
maintaining stable internal conditions inside an organism's cells and body
unstable conditions inside an organism's cells and body
nothing, it is a made up word
76
The rough ER is covered with -
Peroxidomes
some kinda -ome
Lysosomes
Ribosomes
77
The form of inhibition that occurs when the inhibitor binds to the active site is called
non-competitive inhibition
fluorescent inhibition
competitive inhibition
epithelial inhibitor
78
What is the Rule for HONC?
Hydrogen-4, Oxygen-3, Nitrogen-2, Carbon-1
Hydrogen- 1, Oxygen-2, Nitrogen-3. Carbon-5
Hydrogen- 1, Oxygen-2, Nitrogen-3. Carbon-4
Hydrogen-4, Oxygen-2, Nitrogen-3, Carbon-1
79
Chaperonins are proteins that aid the proper folding of other proteins.
True
False
80
Living organisms respond to stimuli to maintain ...
reproduction
homeostasis
metabolism
evolution
81
What is missing Primary, Secondary, ?, Quartenary
Tanzania
Tertiary
Topiary
Tennis
82
Kinetic Energy is?
Gravity gives potential energy to object
energy available for when a deformed elastic object returns
The energy of a moving object.
Stored energy
83
Can vitamins change the shape of the active site?
You tell me
Sometimes
No
They sure can
84
The atomic mass is equal to ___________________ + ________________.
protons; electrons
protons; neutrons
neutrons; electrons
protons; protons
85
What is the most common steroid in humans
Testosterone
Cholesterol
Estrogen
Dexamethasone
86
What type of interaction stabilizes the tertiary structure of a protein
Interactions between R-groups
The inclusion of multiple subunits
Hydrogen bonding along the backbone of the protein struand
Peptide bonds
87
What is adhesion?
The ability of water to stick to other water molecules.
The fact that water has a positive and negative charge.
The ability of water to stick to other substances.
The ability of water to defy gravity.
88
cohesion at the surface of the water
surface tension
condensation
evaporation
surfactant
89
Phospholipids are amphipathic.
False
True
90
Which macromolecule helps with your immune system?
Carbohydrates
Lipids
Nucleic Acids
Proteins
91
Amphipathic molecules...
have both hydrophilic & hydrophobic ends
are only on the outside of the membrane
convert glucose to oxygen
are lazy
92
What three things do all amino acids have in common?
They are all polar
They are all acidic
Central carbon connected to a hydrogen, an amine & carboxyl
The same R group, an amine and a carbonyl group
93
How many amino acids are in the human body?
20
45
80
120
94
These are Ribose and Deoxyribose. Which one is shown on the right?
Ribose
Deoxyribose
95
2nd Law of Thermodynamics says: in every energy conversion, some energy is lost as:
heat
light
electricity
motion
96
What is dynamic instability?
the ability of microtubules and microfilaments to grow and shrink
the ability of the cell membrane to change
the ability of DNA to mutate
The ability of vesicles to move
97
True/False : The R Group is the same for every amino acid
False
True
98
What cell structure is circled in red?
Cilia
Microvilli
Flagellum
Microfilaments
