7666059
Descrição
Quiz por Alexandra Bozan, atualizado more than 1 year ago
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Criado por Alexandra Bozan
quase 8 anos atrás
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Questão 1
Questão
The major function of ribosomes is to synthesize
Responda
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proteins
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carbohydrates
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fats
-
cholesterol
Questão 2
Questão
Diffusion of water through a selectively permeable membrane in the presence of at least one impermeant solute is referred to as
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diffusion
-
osmosis
-
phagocytosis
-
pinocytosis
Questão 3
Questão
Main cell structures include all of the following except
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organelles
-
plasma membrane
-
blood plasma
-
cytoplasm
Questão 4
Questão
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
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dialysis
-
osmosis
-
diffusion
-
filtration
Questão 5
Questão
If a 20% glucose solution is separated from a 10% glucose solution by a permeable membrane
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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
Questão 6
Questão
Chromosomes and chromatin are both forms of DNA
Responda
- True
- False
Questão 7
Questão
Transcription can be best described as the
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degradation of tRNA
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reading of mRNA codons by tRNA
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replication of DNA
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synthesis of mRNA
Questão 8
Questão
The major direct cell connections are tight junctions, gap junctions, and desmosomes
Responda
- True
- False
Questão 9
Questão
Rough endoplasmic reticulum looks rough because there are mitochondria attached to it
Responda
- True
- False
Questão 10
Questão
Preparation of protein molecules for cellular exportation is the function of which of the following organelles?
Responda
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Golgi apparatus
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smooth endoplasmic reticulum
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rough endoplasmic reticulum
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mitochondria
Questão 11
Questão
The structure that separates the contents of a cell from the surrounding tissue is known as
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Golgi apparatus
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plasma membrane
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cytoplasm
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centrosome
Questão 12
Questão
The number of mitochondria in a cell is basically related to its degree of activity
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- True
- False
Questão 13
Questão
Which of the following is a functional characteristic of ribosomes?
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manufacture of mRNA
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protein synthesis
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DNA replication
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housing of DNA
Questão 14
Questão
An individual’s entire set of DNA can be referred to as:
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chromatid
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genome
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cytokinesis
Questão 15
Questão
Which of the following is not true of RNA?
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It is a single strand
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It contains uracil rather than thymine
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The obligatory base pairs are adenine and uracil, and guanine and cytosine
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It contains deoxyribose sugar
Questão 16
Questão
A saline solution that contains a higher concentration of salt than a living red blood cell would be
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isotonic
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hypotonic
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hypertonic
Questão 17
Questão
A DNA molecule is characterized by all of the following except
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double helix shape
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obligatory base pairing
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ribose sugar
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phosphate groups
Questão 18
Questão
A 10% solution of NaCl has a higher concentration of water than a 10% solution of glucose
Responda
- True
- False
Questão 19
Questão
Homeostasis can best be described as:
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a constant state maintained by living and nonliving organisms
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a state of relative constancy
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adaptation to external environment
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changes in body temperature
Questão 20
Questão
Phagocytosis is an example of
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exocytosis
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endocytosis
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passive transport
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facilitated diffusion
Questão 21
Questão
A frontal section divides the body into
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upper and lower portions
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right and left portions
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front and back portions
Questão 22
Questão
Positive feedback control systems
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have no effect on the deviation from set point
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accelerate a change
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ignore a change
Questão 23
Questão
The functions of the nucleus are actually regulated by RNA
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- True
- False
Questão 24
Questão
Granules or threads within the nucleus are called
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microfilaments
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chromatin
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nucleotides
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microtubules
Questão 25
Questão
A sequence of three bases forms a(n)
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codon
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anticodon
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amino acid
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polypeptide bond
Questão 26
Questão
With reference to the left elbow, the left shoulder would be the contralateral shoulder.
Responda
- True
- False
Questão 27
Questão
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.
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- True
- False
Questão 28
Questão
The G1 and G2 phases of cell growth are separated by:
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anaphase
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the S phase
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telophase
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anaphase and telophase.
Questão 29
Questão
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?
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TAGC
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CGAT
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GCTA
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ATCG
Questão 30
Questão
Ribosomes attached to the endoplasmic reticulum are responsible for making proteins for export out of the cell.
Responda
- True
- False
Questão 31
Questão
Proximal and distal are opposite directional terms in humans.
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- True
- False
Questão 32
Questão
In the cell membrane, the hydrophilic part of the phospholipid molecule:
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A. faces the exterior of the cell
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B. faces the interior of the cell
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C. is in the center of the phospholipid bilayer.
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D. A and B.
Questão 33
Questão
When the chromosomes align themselves across the equator of the spindle fibers, it is characteristic of which phase of mitosis?
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prophase
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anaphase
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metaphase
-
telophase
Questão 34
Questão
Projections from the cell that move materials and mucus are:
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cilia
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flagella
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microvilli
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microtubules
Questão 35
Questão
A plane through the body that would divide the body into anterior and posterior portions is:
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sagittal
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median
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coronal
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transverse
Questão 36
Questão
A hypertonic solution contains:
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a greater concentration of solute than the cell.
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the same concentration of solute as the cell.
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a lesser concentration of solute than the cell.
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none of the above.
Questão 37
Questão
Each of the following is an example of the plasma membrane function except:
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boundary
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self-identification
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receptor sites
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production of proteins
Questão 38
Questão
A nucleotide of a DNA molecule consists of a ribose sugar, phosphoric acid, and a nitrogenous base.
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- True
- False
Questão 39
Questão
The abdominopelvic cavity contains all of the following except the:
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kidneys
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gallbladder
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right lung
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urinary bladder
Questão 40
Questão
An organ is one organizational step lower than a(n):
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system
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cell
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organelle.
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tissue
Questão 41
Questão
Dialysis is a form of filtration that results in a separation of small and large solute particles.
Responda
- True
- False
Questão 42
Questão
ATP production occurs within which organelle?
Responda
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rough endoplasmic reticulum
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Golgi apparatus
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flagellum
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mitochondrion
Questão 43
Questão
Genes determine polypeptide structure, which determines the structure of enzymes and structural proteins, which determine the cell’s functions and structure.
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- True
- False
Questão 44
Questão
Shivering to try to raise your body temperature back to normal would be an example of:
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A. the body trying to maintain homeostasis
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B. a positive feedback mechanism
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C. a negative feedback mechanism
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D. A and C
Questão 45
Questão
Which of the following statements is true?
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Amino acid chains form DNA.
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The site of transcription is within the nucleus, while the site of translation is in the cytoplasm.
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Uracil is present in DNA in place of thymine.
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None of the above.
Questão 46
Questão
The structure in white blood cells associated with the enzymatic breakdown of foreign material is the:
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lysosome
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Golgi apparatus
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ribosome
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centriole
Questão 47
Questão
In anatomical position, the person is standing erect with arms at the sides and palms dorsal.
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- True
- False
Questão 48
Questão
Visceral peritoneum would cover which of the following organs?
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heart
-
intestines
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lungs
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spinal cord
Questão 49
Questão
The action of a gene is determined by the arrangement of the obligatory base pairs in the nucleotides composing a DNA molecule.
Responda
- True
- False
Questão 50
Questão
Ventral and posterior are synonymous terms
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- True
- False
Questão 51
Questão
Which organelle processes and packages material to be secreted?
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nucleolus
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ribosome
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mitochondrion
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Golgi apparatus
Questão 52
Questão
The head, neck, arms, and legs make up the axial skeleton.
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- True
- False
Questão 53
Questão
Which of the following is not a function of the plasma membrane?
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self-identification
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receptor site for messages
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selective barrier
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control center of the cell
Questão 54
Questão
Two major cavities of the human body are:
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ventral/dorsal
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inferior/superior
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visceral/parietal
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axial/appendicular
Questão 55
Questão
The bone of the upper arm is deep to the muscles that surround and cover it.
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- True
- False
Questão 56
Questão
The basic unit of structure and function in the human body is a(n):
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atom
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cell
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gene
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DNA molecule.
Questão 57
Questão
The correct arrangement of the phases of mitosis is:
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anaphase, telophase, metaphase, prophase
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prophase, metaphase, anaphase, telophase
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prophase, anaphase, metaphase, telophase
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anaphase, metaphase, prophase, telophase.
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none of the above.
Questão 58
Questão
When many similar cells specialize to perform a certain function, it is referred to as:
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tissue
-
organelle
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organ system complex
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organism
Questão 59
Questão
In certain situations, cells “commit suicide.” This function would be carried out by the lysosomes.
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- True
- False
Questão 60
Questão
In normal mitosis, the two daughter cells are identical genetically to the parent cell.
Responda
- True
- False
Questão 61
Questão
The organelles that can digest and destroy microbes that invade the cell are:
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-
peroxisomes
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mitochondria
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ribosomes
-
lysosomes
Questão 62
Questão
DIFFUSION REQUIRES
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semipermeable membrane
-
a concentration gradient
-
ions
-
none of the above
Questão 63
Questão
Peroxisomes contain enzymes that detoxify harmful substances.
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- True
- False
Questão 64
Questão
A specialized cell structure that propels the sperm is the:
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flagellum
-
cilium
-
microvillus
-
microtubule
Questão 65
Questão
Diffusion of particles through a membrane by means of a carrier molecule is called:
Responda
-
pinocytosis
-
osmosis
-
facilitated diffusion
-
Dialysis
Questão 66
Questão
Which of the following is not a major tissue of the body?
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cutaneous tissue
-
epithelial tissue
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connective tissue
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nervous tissue
Questão 67
Questão
The major energy production site of the cell is the:
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-
Golgi apparatus
-
mitochondrion
-
endoplasmic reticulum
-
ribosome
Questão 68
Questão
The [blank_start]centrosome[blank_end] is often called the microtubule-organizing center.
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-
centrosome
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cytoskeleton
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centriole
-
ribosome
Questão 69
Questão
Materials can be moved from a low concentration to a high concentration through:
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facilitated diffusion
-
filtration
-
osmosis
-
active transport
Questão 70
Questão
Glycoproteins on the cell membrane would prevent someone with type A blood from accepting type B blood.
Responda
- True
- False
Questão 71
Questão
The ventral body cavity contains the:
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thoracic and abdominopelvic cavities
-
heart and lungs only
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digestive and reproductive organs
-
brain and spinal cord
Questão 72
Questão
Negative feedback mechanisms
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minimize changes in blood glucose levels
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maintain homeostasis
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are responsible for an increased rate of sweating when air temperature is higher than body temperature
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all of the above
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