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BIO 140 exam 1 Dr. Stafstrorm Flashcards | StudBud
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BIO 140 exam 1 Dr. Stafstrorm
BIO 140 exam 1 Dr. Stafstrorm
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1
the oxygen molecule in water is partially positively charged
false
true
2
The eyes of a human and the eyes of a fly are an example of...
Homologous Structures
Analogous Structures
3
Composed of about 50% proteins and 50% DNA
Genome
DNA
Chromosome
Gene
4
The bulk uptake of solid particles is called
pinocytosis
phagocytosis
exocytosis
receptor-mediated endocytosis
5
Defined as an entire set of DNA in a cell
DNA
Genome
Chromosome
Gene
6
What is Alfred Russell Wallace known for?
Coming up with the same theory of natural selection as Darwin independently
Being the first to visualize cells with a microscope
Developing the Cell Theory
Discovering the structure of DNA
7
Characterize the R group of the amino acid shown below.
non-polar, charged
polar, uncharged
non-polar, uncharged
polar, charged
8
Which of the following is not a function of membrane proteins?
Signal transduction
Cell to cell adhesion
Metabolism
Transport
9
Which of the following is present in a eukaryotic cell but not a prokaryotic cell?
mitochondria
DNA
ribosomes
plasma membrane
10
Which of the following is responsible for the fluidity of the cell membrane?
sodium-potassium pumps
Proteins
Cholesterol
the viscosity of the lipid bilayer
11
Which of these is not one of the parts of Thomas Malthus's essay that influenced Darwin
Populations remain constant due to competition for resources
There are always enough resources for every individual in a populations
Populations of organisms have the potential to double each generation
Resources increase slowly or not at all
12
Which of the following is/are purines?
Guanine
Thymine
Adenine
Cytosine
13
What are the two great themes of Biology?
Life and Death
Diversity and Unity
Evolution and Natural Selection
14
Where are ribosomes synthesized?
Nucleus
Golgi Apparatus
RER
SER
15
What did Darwin suggest was the mechanism for evolution?
Mutations
Natural Selection
Homology and Analogy
Progressive change over time
16
What kind of reaction joins monomers together?
Endergonic reaction
Combustion reaction
Dehydration reaction
Hydration reaction
17
A proposed explanation for natural phenomenon based on observation
Hypothesis
Theory
Law
Experiment
18
Which of these following property describes the phospholipid bilayer?
Aliphatic
Hydrophobic
Amphipathic
Hydrophilic
19
Which characteristic does not belong with RNA?
usually single stranded
there are several varieties
contains A,T,C, and G bases
ribose sugar
20
The molecule shown below is said to be
Non polar
Polar
21
The formation of the lipid bilayer is
Spontaneous
Endergonic
Non-spontaneous
Exergonic
22
What is the direction of the packaged proteins in the golgi apparatus
in from trans face, out from cis face
in from cis face, out from trans face
in from right side, out from left side
in through lumen, out from butthole
23
Which of the following can pass through the plasma membrane easily
carbon dioxide
glucose
sodium ions
oxygen
24
The term "9+2" is associated with
intermediate filaments
microfilaments
microtubules
actin filaments
25
Which of the following does not belong on a nucleotide?
A pentose sugar ring
A nitrogenous base
An R-group
A phosphate group
26
What is attached to the alpha carbon of an amino acid?
Amine Group
Hydrogen
Carbon with carbonyl group
R-group
27
Which of these is responsible for the breakdown of fatty acids?
Lysosomes
Smooth ER
Peroxisomes
Ribosomes
28
Structure derived from a common source but not necessarily with the same function
Inheritance
Homology
Analogy
Genetics
29
A ribosome is likely to attach to the plasma membrane of which organelle?
Nucleus
Golgi Apparatus
Endoplasmic Reticulum
Plasma Membrane
30
Is the molecule below polar or nonpolar?
polar
nonpolar
31
Which of the following is composed of eukaryotic cells?
A protist
A bacteria
A virus
An archae
32
What is the molecule shown below
Lipid
Phospholipid
Cholesterol
Triglyceride
33
Most proteins folds at this structure because it is stabilized by interactions between R-group
Tertiary
Primary
Secondary
Quaternary
34
Which of this does not go down the concentration gradient?
Osmosis
Active transport
Facillitated diffusion
Passive transport
35
What is the destination of a protein that is made by a free ribosome?
Cytosol or nucleus
integral to a membrane
Luminal or secreted
36
What is commonly used to build phylogenetic trees?
Molecular Evidence (DNA similarity)
Reproductive Similarity
Biochemical similarity
Morpholigical similarity
37
What isn't required for receptor-mediated endocytosis
Receptor Protein
Plasma Membrane
Transport Protein
Ligand
38
What functional groups are in the molecule below?
Amine, Carbonyl, and hydroxyl
Amine, Carboxyl, and hydroxyl
Phosphate, hydroxyl, and amine
Sulfhydryl, carbonyl, and amine
39
The movement of sodium ions down its gradient is considered
Exergonic
endocytosis
Endergonic
exocytosis
40
The sequence of a DNA strand is ATGCAG from 3' to 5'. What is its complementary sequence from the 5' to 3' direction?
CTGCAT
CTGCAT
TACGTC
ATGCAG
41
Which of these is a symporter?
Yellow
Blue
Red
42
Which of the following were once prokaryotic cells according to the endosymbiotic theory?
Mitochondria and Vacuoles
Vacuoles and DNA
Chloroplasts and DNA
Mitochondria and Chloroplasts
43
The level at which a protein is arranged by the order of amino acid in its sequence held together by peptide bonds is
Secondary
Quaternary
Tertiary
Primary
44
Which theory ties together the two great themes of biology
The Theory of Evolution
The Theory of Gravity
The Cell Theory
The Endosymbiosis Theory
45
If water is moved through a plasma membrane from A to B, we say that
A is isotonic to B
A is hypertonic to B
A is hypotonic to B
There's not enough information
46
What is the inside of any membrane referred to?
Cytoplasm
Stroma
Matrix
Lumen
47
What type of gradient does the Na+/K+ pump create?
A color gradient
A chemical gradient
An electrical gradient
A concentration gradient
48
Which one of these is the strongest?
Ionic interaction
Peptide bond
Hydrogen bond
hydrophobic interaction
49
What kind of bond connects two carbohydrates?
Peptide bond
Glycosidic bond
Ionic bond
Hydrogen bond
50
What is the destination of a protein that remains in the ER membrane?
integral to a membrane
Cytosol or nucleus
Luminal or secreted
51
What kind of reaction breaks polymers apart?
Endergonic reaction
Combustion reaction
Hydration reaction
Dehydration reaction
52
DNA is translated into RNA
False
True
53
Which of the following is not present in the extracellular matrix
collagen
proteoglycans
elastin
actin filaments
54
What happens to a plant cell in a hypotonic solution
It becomes plasmolyzed
It becomes turgid
It swells up and eventually bursts
Nothing happens to it because of the presence of cell wall
55
What is the destination of a protein that passes through the ER as it is made?
integral to a membrane
Luminal or secreted
Cytosol or nucleus
56
What stores information in a cell?
ATP
RNA
Proteins
DNA
57
Defined as a discrete unit of information
Gene
DNA
Genome
Chromosome
58
The "head" of a phospholipid is said to be
hydrophillic
hydrolysis
amphipathic
hydrophobic
59
What is the universal energy currency?
DNA
ATP
RNA
GTP
60
Which of these are communicating junctions?
Desmosomes
Hemi- Desmosomes
Plasmodesmata
Gap Junctions
