Answer Options:
a) True
b) False
Answer: b) False
Question: Positive feedback differs from negative feedback because ________.
Answer Options:
a) positive feedback is generally beneficial while negative feedback is typically harmful
b) positive feedback tends to enhance the triggering stimulus while negative feedback tends to return the body to a homeost
atic balance or “ideal” level
c) positive feedback provides moment-to-moment wellbeing while negative feedback causes a cascade effect
d) positive feedback is critical to health while negative feedback serves only to alert us to
Answer: b) positive feedback tends to enhance the triggering stimulus while negative feedback tends to return the body to a homeostatic balance or “ideal” level
Question: The dorsal body cavity is the site of which of the following?
Answer Options:
a) liver
b) intestines
c) brain
d) lungs
Answer: c) brain
Question: Salts are always ________.
Answer Options:
a) hydrogen bonded
b) single covalent compounds.
c) double covalent compounds
d) ionic compounds
Answer: d) ionic compounds
Question: Which of the following is NOT considered a factor in influencing a reaction rate?
Answer Options:
a) particle size
b) concentration of reactants
c) temperature
d) time
Answer: d) time
Question: Passive membrane transport processes include ________.
Answer Options:
a) movement of a substance down its concentration gradient.
b) the use of transport proteins when moving substances from areas of low to high concentration.
c) consumption of ATP.
d) movement of water from an area of high solute concentration to an area of low concentration.
Answer: a) movement of a substance down its concentration gradient.
Question: What does the formula C6H12O6 mean?
Answer Options:
a) The substance is a colloid.
b) There are 6 calcium, 12 hydrogen, and 6 oxygen atoms.
c) There are 6 carbon, 12 hydrogen, and 6 oxygen atoms.
d) The molecular weight is 24.
Answer: c) There are 6 carbon, 12 hydrogen, and 6 oxygen atoms.
Question: A type of transport protein found in the plasma membrane of cells lining the inside of the intestine allows sodium ions to diffuse down their concentration gradient. The ions move through the transport protein, and into the cell. These transport proteins will use the kinetic energy of the diffusing sodium ions to bring glucose into the cells as well. This transport protein would be best described as a ________.
Answer Options:
a) symporter
b) pump
c) carrier protein
d) channel
Answer: a) symporter
Question: Generally what is the result of the negative feedback process?
Answer Options:
to regulate excretion via the kidneys
to control body movement
to maintain homeostasis
to keep the body’s blood sugar level high
Answer: to maintain homeostasis
Question: A chemical reaction in which bonds are broken is usually associated with_____.
Answer Options:
a) the release of energy
b) a synthesis
c) forming a larger molecule
d) the consumption of energy
Answer: a) the release of energy
Question: Which of the following is an example of a suspension?
Answer Options:
a) blood
b) salt water
c) rubbing alcohol
d) cytosol
Answer: a) blood
Question: Place the following in correct sequence from simplest to most complex:
molecules
atoms
tissues
cells
organs
Answer Options:
a) 2-1-3-4-5
b) 2-1-4-3-5
c) 1-2-3-4-5
d) 1-2-4-3-5
Answer: b) 2-1-4-3-5
Question: Which of the following are survival needs of the body?
Answer Options:
a) nutrients, water, atmospheric pressure, and oxygen
b) nutrients, water, growth, and reproduction
c) nutrients, water, movement, and reproduction
d) water, atmospheric pressure, growth, and movement
Answer: a) nutrients, water, atmospheric pressure, and oxygen
Question: It is the difference in the R group that makes each amino acid chemically unique.
Answer Options:
a) True
b) False
Answer: a) True
Question: In which stage of mitosis do the identical sets of chromosomes uncoil and resume their chromatin form?
Answer Options:
a) anaphase
b) metaphase
c) telophase
d) prophase
Answer: c) telophase
Question: Positive feedback differs from negative feedback because ________.
Answer Options:
a) positive feedback is generally beneficial while negative feedback is typically harmful
b) positive feedback tends to enhance the triggering stimulus while negative feedback tends to return the body to a homeostatic balance or “ideal” level
c) positive feedback provides moment-to-moment wellbeing while negative feedback causes a cascade effect
d) positive feedback is critical to health while negative feedback serves only to alert us to potential health threats
Answer: b) positive feedback tends to enhance the triggering stimulus while negative feedback tends to return the body to a homeostatic balance or “ideal” level
Question: The atomic weight is an average of the relative weights (mass numbers) of all the isotopes of an element.
Answer Options:
True
False
Answer: True
Question: Which of the following describes the plasma membrane?
Answer Options:
a) a membrane composed of tiny shelves or cristae
b) a phospholipid bilayer surrounding the cell
c) a single-layered membrane that surrounds the nucleus of the cell
Answer: b) a phospholipid bilayer surrounding the cell
Question: The main component of the cytosol is ________.
Answer Options:
a) salts
b) water
c) proteins
d) sugars
Answer: b) water
Question: Some of the nerve endings in the skin are sensitive to changes in temperature. They are part of a negative feedback mechanism regulating body temperature. These nerve endings represent an_____ in the negative feedback mechanism.
Answer Options:
a) control center
b) receptor
c) effector
d) homeostatic balance or “ideal value”
Answer: b) receptor
Question: According to the anatomical position, the olecranal region is _________ to the antecubital region.
Answer: posterior