Cell Structure and Functions Quiz
Preview:
Both smooth muscle fibers and cardiac muscle fibers:
A. have striations.
B. are under involuntary control.
C. are multinucleate.
D. have branching
__________, which are a type of xylem, are extremely efficient in conducting water.
A. Sieve tube element
B. Sclereid
C. Tracheid
D. Vessel element
What is meant by the term “fluid mosaic model”?
A. It is the diffusion of lipid-soluble substances through the lipid bilayer.
B. It is the movement of lipids and integral proteins within the lipid bilayer
C. It is the solubility of water in the membrane
D. It is the method of substance transport across the membrane
Used in places where diffusion needs to occur, such as blood vessels and air sacs of lung
A. Simple cuboidal
B. Simple squamous
C. Simple columnar
D. Stratified squamous
Facilitated diffusion:
A. requires a transmembrane protein
B. requires ATP
C. can move molecules against a concentration gradient
D. is typically used to transport small nonpolar molecules
If dense bone lacked canaliculi:
A. there would be no blood supply to the cells.
B. diffusion between cells would not be possible
C. there would be no nerve supply to the tissue
D. the extracellular matrix would not be formed by osteoblasts
This part of neuron insulates the axon and increases the speed of impulse transmission within neuron
A. Cell body
B. Myelin sheath
C. Dendrite
D. Axon terminal
One difference between cardiac muscle fibers and skeletal muscle fibers is that cardiac muscle fibers:
A. are not striated, while skeletal muscle fibers are
B. have several nuclei, while skeletal muscle fibers do not
C. are under voluntary control, while skeletal muscle fibers are not
D. branch and form complex networks, while skeletal muscle fibers do not
The type of tissue represented is:
A. Compact bone
B. Hyaline cartilage
C. Simple squamous epithelium
D. Blood
Which of the following molecules is least likely to cross a cellular membrane by simple diffusion?
A. carbon dioxide
B. nitrogen
C. potassium ion
D. water
Which cells or cell components play an essential role in the clotting of blood?
A. erythrocytes
B. platelets
C. leukocytes
D. plasma
The process illustrated in the figure would most likely be used to transport:
A. glucose
B. hormones
C. potassium ions
D. carbon dioxide
In a nerve cell, the function of the dendrites is to:
A. conduct impulses away from the cell body.
B. receive impulses and conduct them to the cell body
C. increase the speed at which nerve impulses are carried away from the cell body
D. support and nourish the neuron
What two tissues transport materials throughout the entire plant body?
A. sclerenchyma and xylem
B. phloem and xylem
C. parenchyma and xylem
D. sclerenchyma and collenchyma
A wilted flower placed in a vase of water for several hours became stiff and stood erect. When it was placed in a salt solution, it wilted. From this information we can say that the cells of the flower are:
A. hypotonic to both fresh water and the salt solution
B. hypertonic to both the fresh water and the salt solution
C. hypertonic to fresh water but hypotonic to the salt solution
D. hypotonic to fresh water but hypertonic to the salt solution
This tissue carries nutrients, waste, respiratory gases and many other substances throughout the body
A. Bone
B. Blood
C. Cartilage
D. Muscle
Biological membranes are normally permeable to:
A. large, hydrophilic molecules
B. small, hydrophilic molecules
C. large, hydrophobic molecules
D. small, hydrophobic molecules
Cartilage-producing cells occupy small cavities in cartilage called __________, while bone-producing cells occupy cavities in bone called __________.
A. lacunae; Haversian canals
B. canaliculi; Haversian canals
C. lamellae; lacunae
D. lacunae; lacunae
Which type of epithelial cells will provide the most protection against abrasion, such as your foot rubbing against the bottom of your shoe?
A. Simple squamous
B. Stratified squamous
C. Simple cuboidal
D. Simple columnar
Which of the following statements about the sodium-potassium pump is true?
A. It transports 3 sodium ions out of the cell in exchange for 2 potassium ions
B. It transports 2 sodium ions out of the cell in exchange for 3 potassium ions
C. It transports water directly out of the cell
D. It transports hydrogen ions out of the cell
Parenchyma, collenchyma, and sclerenchyma are classified as:
A. Dermal tissues
B. Vascular tissues
C. Ground tissues
D. Primary tissues
The extremely flexible tissue that provides support in soft, nonwoody plants, allowing them to grow upward, is:
A. Parenchyma tissue
B. Collenchyma tissue
C. Sclerenchyma tissue
D. Dermal tissue
A human white blood cell engulfs a bacterial cell by:
A. exocytosis
B. phagocytosis
C. pinocytosis
D. the sodium-potassium pump
Dividing cells are found in all of the following except:
A. Apical meristems
B. Lateral meristems
C. Vascular cambium
D. Fiber cells
Cholesterol within membranes functions as a(n) __________ through its interactions with both hydrophobic and hydrophilic parts of phospholipids
A. pH buffer
B. ebergy source
C. temperature controller
D. fluidity buffer
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