membrane transport & osmosis
31) Select the statement about selective (or differential) permeability that is false.
A) It prevents undesirable wastes from entering cells.
B) It allows nutrients to enter cells.
C) It keeps cellular wastes inside cells.
D) It keeps valuable proteins inside cells
C) It keeps cellular wastes inside cells.
28) ________ are membranous sacs that detoxify harmful chemicals.
A) Golgi apparatus
B) Rough endoplasmic reticulum
C) Peroxisomes
D) Lysosomes
C) Peroxisomes
37) This epithelial tissue has many cell layers. It forms the outer layer of the skin.
A) transitional
B) pseudostratified columnar
C) stratified squamous
D) stratified columnar
C) stratified squamous
42) Exocrine glands are considered to be a type of connective tissue because ________.
A) their ducts connect them to a surface
B) they produce secretions, not hormones
C) exocrine glands are epithelial tissue, not connective tissue
D) they develop from mesenchyme
C) exocrine glands are epithelial tissue, not connective tissue
47) In addition to supporting and protecting the body, the skeleton provides this function as well.
A) Its cartilages produce blood.
B) Its muscles provide movement.
C) The bones store fat, red marrow, and calcium.
C) The bones store fat, red marrow, and calcium
32) These molecules move through the lipid portion of the plasma membrane by simple diffusion.
A) CO2 and O2
B) glucose
C) Na+ and Cl-
D) K+ and Ca2+
A) CO2 and O2
29) From the time it is formed until it reproduces, the cell undergoes growth and carries out its functions in the body. What is the name for this portion of the cell's life cycle?
A) functional phase
B) growth and development
C) life phase
D) interphase
D) interphase
38) This tissue type is capable of changing its shape and stretching. It lines the urinary bladder and ureters.
A) stratified squamous epithelium
B) smooth muscle
C) dense irregular connective tissue
D) transitional epithelium
D) transitional epithelium
43) Which of the following is not a function of the skin?
A) preventing dehydration
B) protection
C) helping regulate temperature
D) synthesizing vitamin C
D) synthesizing vitamin C
48) Bones of the skeleton are connected at junctions called ________.
A) articulations
B) associations
C) axials
D) appendiculars
A) articulations
33) Which of the following is true about osmosis?
A) Water may move up or down a concentration gradient during osmosis.
B) Osmosis is the flow of water across a plasma membrane.
C) Osmosis occurs when the concentration of water is the same as the concentration of solutes.
D) Solutes always accompany the movement of water during osmosis.
B) Osmosis is the flow of water across a plasma membrane.
30) You are observing a slide that contains cells undergoing cell division, and you have focused on a cell that has darkly staining X-shaped chromosomes that appear loose throughout the cell. You cannot see a nuclear envelope. This cell is in ________.
A) telophase
B) anaphase
C) prophase
D) interphase
C) prophase
39) Cardiac muscle is found in the ________.
A) blood vessels, capillaries, and heart
B) heart
C) blood vessels
D) capillaries
B) heart
44) These glands are found all over the skin except in the palms of the hands and soles of the feet. They produce an oily substance that lubricates skin and hair.
A) eccrine sweat glands
B) endocrine glands
C) sebaceous glands
D) apocrine sweat glands
C) sebaceous glands
49) A trochanter is a ________.
A) narrow opening in bone
B) large, irregularly-shaped projection
C) rounded, articular projection
D) structure supported on the neck
B) large, irregularly-shaped projection
34) Red blood cells placed in a hypotonic solution will ________.
A) lose water and undergo crenation
B) gain water and undergo crenation
C) gain water and undergo hemolysis
D) lose water and undergo hemolysis
C) gain water and undergo hemolysis
36) Does potassium permanganate diffuse more rapidly through water or through agar gel? Why?
A) It diffuses more rapidly through agar, because water attracts the dye molecules and slows their movement.
B) It diffuses more rapidly through agar, because there are channels in agar that help the dye solution to move.
C) It diffuses more rapidly through water, because there are no particles to slow the movement of dye.
D) It diffuses more
C) It diffuses more rapidly through water, because there are no particles to slow the movement of dye.
40) Two of the four primary tissue types contain excitable cells, cells that receive stimuli and generate electrical signals. One of these is muscle tissue. Name the other.
A) epithelial
B) nervous
C) connective
B) nervous
45) The ________ is the structure responsible for goose bumps.
A) arrector pili
B) hair follicle
C) lamellar corpuscle
D) sebaceous gland
A) arrector pili
50) An example of a sesamoid bone is the ________.
A) patella
B) pubis
C) radius
D) clavicle
A) patella
35) Which of the following statements is true?
A) Active processes move molecules along a concentration gradient.
B) Passive processes require ATP.
C) Passive processes move molecules against a concentration gradient.
D) Active processes require ATP.
D) Active processes require ATP.
51) A dialysis sac that is permeable to glucose and water is filled with water and placed in a beaker containing 20% glucose solution. Will there be a net transport of glucose across the dialysis sac? If so, in which direction will the glucose move, into the sac or out of the sac?
A) No, there is no force to drive glucose across the membrane.
B) Yes, glucose will move into the sac.
C) There is no net movement, but glucose will move back and forth across the membrane.
D) Yes, glucose will move out of the sac.
B) Yes, glucose will move into the sac.
41) This tissue can look like the hexagonal tiles of a bathroom floor. It also forms the air sacs of the lungs.
A) adipose connective tissue
B) simple squamous epithelium
C) hyaline cartilage
D) stratified squamous epithelium
B) simple squamous epithelium
46) What is true about both the epidermis and the dermis?
A) Each consists, in part, of dead and dying cells.
B) Sensory receptors are present in each.
C) They are highly vascular.
D) Both are made of dense irregular connective tissue
B) Sensory receptors are present in each.
17) The spleen, thymus, and tonsils are all part of the ________ system.
A) endocrine
B) respiratory
C) cardiovascular
D) lymphatic/immune
D) lymphatic/immune