Answer Options:
arms at sides
palms turned posteriorly
body erect
thumbs pointed laterally
Answer: palms turned posteriorly
Question: Which of the following describes the plasma membrane?
Answer Options:
a) a double layer of protein enclosing the plasma
b) a membrane composed of tiny shelves or cristae
c) a phospholipid bilayer surrounding the cell
d) a single-layered membrane that surrounds the nucleus of the cell
Answer: c) a phospholipid bilayer surrounding the cell
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 best be described as a ________.
Answer Options:
a) symporter
b) a pump
c) a carrier protein
d) a channel
Answer: a) symporter
Question: How many phosphates would AMP have attached to it?
Answer Options:
a) one
b) three
c) none
Answer: a) one
Question: Atom X has 17 protons. How many electrons are in its valence shell (outermost energy level)?
Answer Options:
a) 13
b) 10
c) 5
d) 7
Answer: d) 7
Question: Which of the following would be regarded as an organic molecule?
Answer Options:
a) NaCl
b) NaOH
c) CH4
d) H2O
Answer: c) CH4
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: How many phosphates would AMP have attached to it?
Answer Options:
a) two
b) one
c) three
d) none
Answer: b) one
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: When DNA is replicated, it is necessary for the two strands to ‘unzip’ temporarily. Choose which bonding type is most appropriate for holding the strands together in this way.
Answer Options:
a) iconic bonding
b) hydrogen bonding
c) non-polar covalent bonding
d) polar covalent bonding
Answer: b) hydrogen bonding
Question: Mitosis ________.
Answer Options:
a) is division of the genetic material within the nucleus.
b) is the formation of sex cells.
c) creates diversity in genetic potential.
d) is always a part of the cell cycle.
Answer: a) is division of the genetic material within the nucleus.
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