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Quiz von Alexandra Bozan, aktualisiert more than 1 year ago
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Erstellt von Alexandra Bozan
vor fast 8 Jahre
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Frage 1
Frage
The major function of ribosomes is to synthesize
Antworten
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proteins
-
carbohydrates
-
fats
-
cholesterol
Frage 2
Frage
Diffusion of water through a selectively permeable membrane in the presence of at least one impermeant solute is referred to as
Antworten
-
diffusion
-
osmosis
-
phagocytosis
-
pinocytosis
Frage 3
Frage
Main cell structures include all of the following except
Antworten
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organelles
-
plasma membrane
-
blood plasma
-
cytoplasm
Frage 4
Frage
The physical process by which water and solute move through a membrane when a hydrostatic pressure gradient exists across the membrane is the process of
Antworten
-
dialysis
-
osmosis
-
diffusion
-
filtration
Frage 5
Frage
If a 20% glucose solution is separated from a 10% glucose solution by a permeable membrane
Antworten
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glucose would move from the 20% solution to the 10% solution
-
water would move from the 10% solution to the 20% solution
-
water would move from the 20% solution to the 10% solution
Frage 6
Frage
Chromosomes and chromatin are both forms of DNA
Antworten
- True
- False
Frage 7
Frage
Transcription can be best described as the
Antworten
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degradation of tRNA
-
reading of mRNA codons by tRNA
-
replication of DNA
-
synthesis of mRNA
Frage 8
Frage
The major direct cell connections are tight junctions, gap junctions, and desmosomes
Antworten
- True
- False
Frage 9
Frage
Rough endoplasmic reticulum looks rough because there are mitochondria attached to it
Antworten
- True
- False
Frage 10
Frage
Preparation of protein molecules for cellular exportation is the function of which of the following organelles?
Antworten
-
Golgi apparatus
-
smooth endoplasmic reticulum
-
rough endoplasmic reticulum
-
mitochondria
Frage 11
Frage
The structure that separates the contents of a cell from the surrounding tissue is known as
Antworten
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Golgi apparatus
-
plasma membrane
-
cytoplasm
-
centrosome
Frage 12
Frage
The number of mitochondria in a cell is basically related to its degree of activity
Antworten
- True
- False
Frage 13
Frage
Which of the following is a functional characteristic of ribosomes?
Antworten
-
manufacture of mRNA
-
protein synthesis
-
DNA replication
-
housing of DNA
Frage 14
Frage
An individual’s entire set of DNA can be referred to as:
Antworten
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chromatid
-
genome
-
cytokinesis
Frage 15
Frage
Which of the following is not true of RNA?
Antworten
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It is a single strand
-
It contains uracil rather than thymine
-
The obligatory base pairs are adenine and uracil, and guanine and cytosine
-
It contains deoxyribose sugar
Frage 16
Frage
A saline solution that contains a higher concentration of salt than a living red blood cell would be
Antworten
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isotonic
-
hypotonic
-
hypertonic
Frage 17
Frage
A DNA molecule is characterized by all of the following except
Antworten
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double helix shape
-
obligatory base pairing
-
ribose sugar
-
phosphate groups
Frage 18
Frage
A 10% solution of NaCl has a higher concentration of water than a 10% solution of glucose
Antworten
- True
- False
Frage 19
Frage
Homeostasis can best be described as:
Antworten
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a constant state maintained by living and nonliving organisms
-
a state of relative constancy
-
adaptation to external environment
-
changes in body temperature
Frage 20
Frage
Phagocytosis is an example of
Antworten
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exocytosis
-
endocytosis
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passive transport
-
facilitated diffusion
Frage 21
Frage
A frontal section divides the body into
Antworten
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upper and lower portions
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right and left portions
-
front and back portions
Frage 22
Frage
Positive feedback control systems
Antworten
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have no effect on the deviation from set point
-
accelerate a change
-
ignore a change
Frage 23
Frage
The functions of the nucleus are actually regulated by RNA
Antworten
- True
- False
Frage 24
Frage
Granules or threads within the nucleus are called
Antworten
-
microfilaments
-
chromatin
-
nucleotides
-
microtubules
Frage 25
Frage
A sequence of three bases forms a(n)
Antworten
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codon
-
anticodon
-
amino acid
-
polypeptide bond
Frage 26
Frage
With reference to the left elbow, the left shoulder would be the contralateral shoulder.
Antworten
- True
- False
Frage 27
Frage
The anticodon on the tRNA molecule is exactly the same nucleotide sequence as the DNA code that formed that part of the mRNA molecule except that uracil would replace thymine.
Antworten
- True
- False
Frage 28
Frage
The G1 and G2 phases of cell growth are separated by:
Antworten
-
anaphase
-
the S phase
-
telophase
-
anaphase and telophase.
Frage 29
Frage
The pairing of bases of a strand of DNA is obligatory. If a strand of DNA were composed of the base sequence of ATCG, what would be the obligated sequence of its opposing base pairs?
Antworten
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TAGC
-
CGAT
-
GCTA
-
ATCG
Frage 30
Frage
Ribosomes attached to the endoplasmic reticulum are responsible for making proteins for export out of the cell.
Antworten
- True
- False
Frage 31
Frage
Proximal and distal are opposite directional terms in humans.
Antworten
- True
- False
Frage 32
Frage
In the cell membrane, the hydrophilic part of the phospholipid molecule:
Antworten
-
A. faces the exterior of the cell
-
B. faces the interior of the cell
-
C. is in the center of the phospholipid bilayer.
-
D. A and B.
Frage 33
Frage
When the chromosomes align themselves across the equator of the spindle fibers, it is characteristic of which phase of mitosis?
Antworten
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prophase
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anaphase
-
metaphase
-
telophase
Frage 34
Frage
Projections from the cell that move materials and mucus are:
Antworten
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cilia
-
flagella
-
microvilli
-
microtubules
Frage 35
Frage
A plane through the body that would divide the body into anterior and posterior portions is:
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sagittal
-
median
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coronal
-
transverse
Frage 36
Frage
A hypertonic solution contains:
Antworten
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a greater concentration of solute than the cell.
-
the same concentration of solute as the cell.
-
a lesser concentration of solute than the cell.
-
none of the above.
Frage 37
Frage
Each of the following is an example of the plasma membrane function except:
Antworten
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boundary
-
self-identification
-
receptor sites
-
production of proteins
Frage 38
Frage
A nucleotide of a DNA molecule consists of a ribose sugar, phosphoric acid, and a nitrogenous base.
Antworten
- True
- False
Frage 39
Frage
The abdominopelvic cavity contains all of the following except the:
Antworten
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kidneys
-
gallbladder
-
right lung
-
urinary bladder
Frage 40
Frage
An organ is one organizational step lower than a(n):
Antworten
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system
-
cell
-
organelle.
-
tissue
Frage 41
Frage
Dialysis is a form of filtration that results in a separation of small and large solute particles.
Antworten
- True
- False
Frage 42
Frage
ATP production occurs within which organelle?
Antworten
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rough endoplasmic reticulum
-
Golgi apparatus
-
flagellum
-
mitochondrion
Frage 43
Frage
Genes determine polypeptide structure, which determines the structure of enzymes and structural proteins, which determine the cell’s functions and structure.
Antworten
- True
- False
Frage 44
Frage
Shivering to try to raise your body temperature back to normal would be an example of:
Antworten
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A. the body trying to maintain homeostasis
-
B. a positive feedback mechanism
-
C. a negative feedback mechanism
-
D. A and C
Frage 45
Frage
Which of the following statements is true?
Antworten
-
Amino acid chains form DNA.
-
The site of transcription is within the nucleus, while the site of translation is in the cytoplasm.
-
Uracil is present in DNA in place of thymine.
-
None of the above.
Frage 46
Frage
The structure in white blood cells associated with the enzymatic breakdown of foreign material is the:
Antworten
-
lysosome
-
Golgi apparatus
-
ribosome
-
centriole
Frage 47
Frage
In anatomical position, the person is standing erect with arms at the sides and palms dorsal.
Antworten
- True
- False
Frage 48
Frage
Visceral peritoneum would cover which of the following organs?
Antworten
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heart
-
intestines
-
lungs
-
spinal cord
Frage 49
Frage
The action of a gene is determined by the arrangement of the obligatory base pairs in the nucleotides composing a DNA molecule.
Antworten
- True
- False
Frage 50
Frage
Ventral and posterior are synonymous terms
Antworten
- True
- False
Frage 51
Frage
Which organelle processes and packages material to be secreted?
Antworten
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nucleolus
-
ribosome
-
mitochondrion
-
Golgi apparatus
Frage 52
Frage
The head, neck, arms, and legs make up the axial skeleton.
Antworten
- True
- False
Frage 53
Frage
Which of the following is not a function of the plasma membrane?
Antworten
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self-identification
-
receptor site for messages
-
selective barrier
-
control center of the cell
Frage 54
Frage
Two major cavities of the human body are:
Antworten
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ventral/dorsal
-
inferior/superior
-
visceral/parietal
-
axial/appendicular
Frage 55
Frage
The bone of the upper arm is deep to the muscles that surround and cover it.
Antworten
- True
- False
Frage 56
Frage
The basic unit of structure and function in the human body is a(n):
Antworten
-
atom
-
cell
-
gene
-
DNA molecule.
Frage 57
Frage
The correct arrangement of the phases of mitosis is:
Antworten
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anaphase, telophase, metaphase, prophase
-
prophase, metaphase, anaphase, telophase
-
prophase, anaphase, metaphase, telophase
-
anaphase, metaphase, prophase, telophase.
-
none of the above.
Frage 58
Frage
When many similar cells specialize to perform a certain function, it is referred to as:
Antworten
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tissue
-
organelle
-
organ system complex
-
organism
Frage 59
Frage
In certain situations, cells “commit suicide.” This function would be carried out by the lysosomes.
Antworten
- True
- False
Frage 60
Frage
In normal mitosis, the two daughter cells are identical genetically to the parent cell.
Antworten
- True
- False
Frage 61
Frage
The organelles that can digest and destroy microbes that invade the cell are:
Antworten
-
peroxisomes
-
mitochondria
-
ribosomes
-
lysosomes
Frage 62
Frage
DIFFUSION REQUIRES
Antworten
-
semipermeable membrane
-
a concentration gradient
-
ions
-
none of the above
Frage 63
Frage
Peroxisomes contain enzymes that detoxify harmful substances.
Antworten
- True
- False
Frage 64
Frage
A specialized cell structure that propels the sperm is the:
Antworten
-
flagellum
-
cilium
-
microvillus
-
microtubule
Frage 65
Frage
Diffusion of particles through a membrane by means of a carrier molecule is called:
Antworten
-
pinocytosis
-
osmosis
-
facilitated diffusion
-
Dialysis
Frage 66
Frage
Which of the following is not a major tissue of the body?
Antworten
-
cutaneous tissue
-
epithelial tissue
-
connective tissue
-
nervous tissue
Frage 67
Frage
The major energy production site of the cell is the:
Antworten
-
Golgi apparatus
-
mitochondrion
-
endoplasmic reticulum
-
ribosome
Frage 68
Frage
The [blank_start]centrosome[blank_end] is often called the microtubule-organizing center.
Antworten
-
centrosome
-
cytoskeleton
-
centriole
-
ribosome
Frage 69
Frage
Materials can be moved from a low concentration to a high concentration through:
Antworten
-
facilitated diffusion
-
filtration
-
osmosis
-
active transport
Frage 70
Frage
Glycoproteins on the cell membrane would prevent someone with type A blood from accepting type B blood.
Antworten
- True
- False
Frage 71
Frage
The ventral body cavity contains the:
Antworten
-
thoracic and abdominopelvic cavities
-
heart and lungs only
-
digestive and reproductive organs
-
brain and spinal cord
Frage 72
Frage
Negative feedback mechanisms
Antworten
-
minimize changes in blood glucose levels
-
maintain homeostasis
-
are responsible for an increased rate of sweating when air temperature is higher than body temperature
-
all of the above
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