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Lecture Exam 1

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Lecture Exam 1
Alexandra Bozan
Quiz by Alexandra Bozan, updated more than 1 year ago
Alexandra Bozan
Created by Alexandra Bozan almost 8 years ago
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Question 1

Question
The major function of ribosomes is to synthesize
Answer
  • proteins
  • carbohydrates
  • fats
  • cholesterol

Question 2

Question
Diffusion of water through a selectively permeable membrane in the presence of at least one impermeant solute is referred to as
Answer
  • diffusion
  • osmosis
  • phagocytosis
  • pinocytosis

Question 3

Question
Main cell structures include all of the following except
Answer
  • organelles
  • plasma membrane
  • blood plasma
  • cytoplasm

Question 4

Question
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
Answer
  • dialysis
  • osmosis
  • diffusion
  • filtration

Question 5

Question
If a 20% glucose solution is separated from a 10% glucose solution by a permeable membrane
Answer
  • 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

Question 6

Question
Chromosomes and chromatin are both forms of DNA
Answer
  • True
  • False

Question 7

Question
Transcription can be best described as the
Answer
  • degradation of tRNA
  • reading of mRNA codons by tRNA
  • replication of DNA
  • synthesis of mRNA

Question 8

Question
The major direct cell connections are tight junctions, gap junctions, and desmosomes
Answer
  • True
  • False

Question 9

Question
Rough endoplasmic reticulum looks rough because there are mitochondria attached to it
Answer
  • True
  • False

Question 10

Question
Preparation of protein molecules for cellular exportation is the function of which of the following organelles?
Answer
  • Golgi apparatus
  • smooth endoplasmic reticulum
  • rough endoplasmic reticulum
  • mitochondria

Question 11

Question
The structure that separates the contents of a cell from the surrounding tissue is known as
Answer
  • Golgi apparatus
  • plasma membrane
  • cytoplasm
  • centrosome

Question 12

Question
The number of mitochondria in a cell is basically related to its degree of activity
Answer
  • True
  • False

Question 13

Question
Which of the following is a functional characteristic of ribosomes?
Answer
  • manufacture of mRNA
  • protein synthesis
  • DNA replication
  • housing of DNA

Question 14

Question
An individual’s entire set of DNA can be referred to as:
Answer
  • chromatid
  • genome
  • cytokinesis

Question 15

Question
Which of the following is not true of RNA?
Answer
  • 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

Question 16

Question
A saline solution that contains a higher concentration of salt than a living red blood cell would be
Answer
  • isotonic
  • hypotonic
  • hypertonic

Question 17

Question
A DNA molecule is characterized by all of the following except
Answer
  • double helix shape
  • obligatory base pairing
  • ribose sugar
  • phosphate groups

Question 18

Question
A 10% solution of NaCl has a higher concentration of water than a 10% solution of glucose
Answer
  • True
  • False

Question 19

Question
Homeostasis can best be described as:
Answer
  • a constant state maintained by living and nonliving organisms
  • a state of relative constancy
  • adaptation to external environment
  • changes in body temperature

Question 20

Question
Phagocytosis is an example of
Answer
  • exocytosis
  • endocytosis
  • passive transport
  • facilitated diffusion

Question 21

Question
A frontal section divides the body into
Answer
  • upper and lower portions
  • right and left portions
  • front and back portions

Question 22

Question
Positive feedback control systems
Answer
  • have no effect on the deviation from set point
  • accelerate a change
  • ignore a change

Question 23

Question
The functions of the nucleus are actually regulated by RNA
Answer
  • True
  • False

Question 24

Question
Granules or threads within the nucleus are called
Answer
  • microfilaments
  • chromatin
  • nucleotides
  • microtubules

Question 25

Question
A sequence of three bases forms a(n)
Answer
  • codon
  • anticodon
  • amino acid
  • polypeptide bond

Question 26

Question
With reference to the left elbow, the left shoulder would be the contralateral shoulder.
Answer
  • True
  • False

Question 27

Question
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.
Answer
  • True
  • False

Question 28

Question
The G1 and G2 phases of cell growth are separated by:
Answer
  • anaphase
  • the S phase
  • telophase
  • anaphase and telophase.

Question 29

Question
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?
Answer
  • TAGC
  • CGAT
  • GCTA
  • ATCG

Question 30

Question
Ribosomes attached to the endoplasmic reticulum are responsible for making proteins for export out of the cell.
Answer
  • True
  • False

Question 31

Question
Proximal and distal are opposite directional terms in humans.
Answer
  • True
  • False

Question 32

Question
In the cell membrane, the hydrophilic part of the phospholipid molecule:
Answer
  • 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.

Question 33

Question
When the chromosomes align themselves across the equator of the spindle fibers, it is characteristic of which phase of mitosis?
Answer
  • prophase
  • anaphase
  • metaphase
  • telophase

Question 34

Question
Projections from the cell that move materials and mucus are:
Answer
  • cilia
  • flagella
  • microvilli
  • microtubules

Question 35

Question
A plane through the body that would divide the body into anterior and posterior portions is:
Answer
  • sagittal
  • median
  • coronal
  • transverse

Question 36

Question
A hypertonic solution contains:
Answer
  • 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.

Question 37

Question
Each of the following is an example of the plasma membrane function except:
Answer
  • boundary
  • self-identification
  • receptor sites
  • production of proteins

Question 38

Question
A nucleotide of a DNA molecule consists of a ribose sugar, phosphoric acid, and a nitrogenous base.
Answer
  • True
  • False

Question 39

Question
The abdominopelvic cavity contains all of the following except the:
Answer
  • kidneys
  • gallbladder
  • right lung
  • urinary bladder

Question 40

Question
An organ is one organizational step lower than a(n):
Answer
  • system
  • cell
  • organelle.
  • tissue

Question 41

Question
Dialysis is a form of filtration that results in a separation of small and large solute particles.
Answer
  • True
  • False

Question 42

Question
ATP production occurs within which organelle?
Answer
  • rough endoplasmic reticulum
  • Golgi apparatus
  • flagellum
  • mitochondrion

Question 43

Question
Genes determine polypeptide structure, which determines the structure of enzymes and structural proteins, which determine the cell’s functions and structure.
Answer
  • True
  • False

Question 44

Question
Shivering to try to raise your body temperature back to normal would be an example of:
Answer
  • A. the body trying to maintain homeostasis
  • B. a positive feedback mechanism
  • C. a negative feedback mechanism
  • D. A and C

Question 45

Question
Which of the following statements is true?
Answer
  • 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.

Question 46

Question
The structure in white blood cells associated with the enzymatic breakdown of foreign material is the:
Answer
  • lysosome
  • Golgi apparatus
  • ribosome
  • centriole

Question 47

Question
In anatomical position, the person is standing erect with arms at the sides and palms dorsal.
Answer
  • True
  • False

Question 48

Question
Visceral peritoneum would cover which of the following organs?
Answer
  • heart
  • intestines
  • lungs
  • spinal cord

Question 49

Question
The action of a gene is determined by the arrangement of the obligatory base pairs in the nucleotides composing a DNA molecule.
Answer
  • True
  • False

Question 50

Question
Ventral and posterior are synonymous terms
Answer
  • True
  • False

Question 51

Question
Which organelle processes and packages material to be secreted?
Answer
  • nucleolus
  • ribosome
  • mitochondrion
  • Golgi apparatus

Question 52

Question
The head, neck, arms, and legs make up the axial skeleton.
Answer
  • True
  • False

Question 53

Question
Which of the following is not a function of the plasma membrane?
Answer
  • self-identification
  • receptor site for messages
  • selective barrier
  • control center of the cell

Question 54

Question
Two major cavities of the human body are:
Answer
  • ventral/dorsal
  • inferior/superior
  • visceral/parietal
  • axial/appendicular

Question 55

Question
The bone of the upper arm is deep to the muscles that surround and cover it.
Answer
  • True
  • False

Question 56

Question
The basic unit of structure and function in the human body is a(n):
Answer
  • atom
  • cell
  • gene
  • DNA molecule.

Question 57

Question
The correct arrangement of the phases of mitosis is:
Answer
  • anaphase, telophase, metaphase, prophase
  • prophase, metaphase, anaphase, telophase
  • prophase, anaphase, metaphase, telophase
  • anaphase, metaphase, prophase, telophase.
  • none of the above.

Question 58

Question
When many similar cells specialize to perform a certain function, it is referred to as:
Answer
  • tissue
  • organelle
  • organ system complex
  • organism

Question 59

Question
In certain situations, cells “commit suicide.” This function would be carried out by the lysosomes.
Answer
  • True
  • False

Question 60

Question
In normal mitosis, the two daughter cells are identical genetically to the parent cell.
Answer
  • True
  • False

Question 61

Question
The organelles that can digest and destroy microbes that invade the cell are:
Answer
  • peroxisomes
  • mitochondria
  • ribosomes
  • lysosomes

Question 62

Question
DIFFUSION REQUIRES
Answer
  • semipermeable membrane
  • a concentration gradient
  • ions
  • none of the above

Question 63

Question
Peroxisomes contain enzymes that detoxify harmful substances.
Answer
  • True
  • False

Question 64

Question
A specialized cell structure that propels the sperm is the:
Answer
  • flagellum
  • cilium
  • microvillus
  • microtubule

Question 65

Question
Diffusion of particles through a membrane by means of a carrier molecule is called:
Answer
  • pinocytosis
  • osmosis
  • facilitated diffusion
  • Dialysis

Question 66

Question
Which of the following is not a major tissue of the body?
Answer
  • cutaneous tissue
  • epithelial tissue
  • connective tissue
  • nervous tissue

Question 67

Question
The major energy production site of the cell is the:
Answer
  • Golgi apparatus
  • mitochondrion
  • endoplasmic reticulum
  • ribosome

Question 68

Question
The [blank_start]centrosome[blank_end] is often called the microtubule-organizing center.
Answer
  • centrosome
  • cytoskeleton
  • centriole
  • ribosome

Question 69

Question
Materials can be moved from a low concentration to a high concentration through:
Answer
  • facilitated diffusion
  • filtration
  • osmosis
  • active transport

Question 70

Question
Glycoproteins on the cell membrane would prevent someone with type A blood from accepting type B blood.
Answer
  • True
  • False

Question 71

Question
The ventral body cavity contains the:
Answer
  • thoracic and abdominopelvic cavities
  • heart and lungs only
  • digestive and reproductive organs
  • brain and spinal cord

Question 72

Question
Negative feedback mechanisms
Answer
  • 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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