15212767
Question 1
Question
1. Which subatomic particle is located in the nucleus of an atom?
Answer
-
a. proton
-
b. electron
-
c. neutron
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d. a and b
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e. a and c
Question 2
Question
Atoms of the same element with different charges are
Answer
-
a. ions
-
b. nucleons
-
c. isotopes
-
d. acids
Question 3
Question
3. Sodium is atomic number 11. If it gives up an electron it will become:
Answer
-
a. an isotope
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b. an acid
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c. a cation
-
d. an anion
Question 4
Question
Elements are identified by their number of :
Answer
-
a. protons
-
b. electrons
-
c. neutrons
-
d. nucleons
Question 5
Question
T or F If two atoms have different atomic numbers, they may be isotopes of each other.
Answer
- True
- False
Question 6
Question
Which of these is NOT a main element found in the body?
Answer
-
a. Sodium
-
b. carbon
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c. oxygen
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d. nitrogen
Question 7
Question
When two atoms of the same element are bonded, it is called a:
Answer
-
d. ion
-
c. molecule
-
b. compound
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a. miracle
Question 8
Question
When two atoms share a pair of electrons equally, it is a ____________ bond:
Answer
-
a. ionic
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b. non-polar covalent
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c. polar covalent
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d. hydrogen
Question 9
Question
Which of these does NOT influence the rate of a chemical reaction?
Answer
-
a. temperature
-
b. concentration
-
c. catalysts
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d. a and b
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e. a, b, c
Question 10
Question
Which type of reaction is the following?
AB >> A + B
Answer
-
a. synthesis
-
b. decomposition
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c. exchange
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d. oxidation
Question 11
Question
The water molecule is held together by ___________ bonds:
Answer
-
a. ionic
-
b. non-polar covalent
-
c. polar covalent
-
d. hydrogen
Question 12
Question
Substances that increase the rate of chemical reactions while remaining unchanged are:
Answer
-
a. catalysts
-
b. enzymes
-
c. anti-oxidants
-
d. a and b
-
e. a,b,c
Question 13
Question
13. A compound that can accept a proton (H+) when placed in water is a:
Answer
-
a. acid
-
c. anti-oxidant
-
d. hydration sphere
-
b. base
Question 14
Question
A salt can have which of the following?
Answer
-
a. H+
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b. K+
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c. OH-
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d. a and b
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e. a and c
Question 15
Question
5. Which carbohydrate monomer is the most common in living organisms?
Answer
-
a. fructose
-
b. galactose
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c. Fructose
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d. Glucose
Question 16
Question
16. Which disaccharide is composed of glucose plus galactose?
Answer
-
a. maltose
-
b. lactose
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c. Sucrose
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d. ribose
Question 17
Question
17. Where might we find glycogen in the human body?
Answer
-
a. muscle
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b. liver
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c. fat cells
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d. a and b
-
e. b and c
Question 18
Question
18. Which of these is NOT a function for proteins?
Answer
-
a. adhesion
-
b. cell signalling
-
c. receptors
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d. energy storage
Question 19
Question
T or F The sodium pump moves potassium from a high concentration to a low concentration.
Answer
- True
- False
Question 20
Question
20. An unsaturated fat has a ___________ bond between at least two carbons.
Answer
-
a. ionic
-
b. polar covalent
-
c. non-polar covalent
-
d. double covalent
Question 21
Question
Triglycerides have three fatty acids attached to a _____________ molecule.
Answer
-
a. carbon
-
b. glycerol
-
c. protein
-
d. glucose
Question 22
Question
22. Steroid molecules are all derivatives of :
Answer
-
a. testosterone
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b. estrogen
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c. Cortisol
-
d. Cholesterol
Question 23
Question
3. Which of these is NOT a function of lipids?
Answer
-
a. energy storage
-
b. enzymes
-
c. membrane component
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d. vitamins
Question 24
Question
Which monomers make up proteins?
Answer
-
a. fatty acids
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b. nucleic acids
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c. amino acids
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d. any acids
Question 25
Question
Which of these is NOT a nucleotide?
Answer
-
a. ATP
-
b. GTP
-
c. cAMP
-
d. DNA
Question 26
Question
Which of the following is NOT a major component of cell membranes?
Answer
-
a. phospholipids
-
b. amino acids
-
c. proteins
-
d. cholesterol
Question 27
Question
Which type of junction allows passage between cells (not from the inside of one cell to the inside of another)?
Answer
-
a. tight junctions
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b. desmosomes
-
c. gap junctions
-
d. a and b
Question 28
Question
Which of these is NOT involved in facilitated diffusion?
Answer
-
a. movement from high concentration to low
-
b. protein helper
-
c. ATP
-
d. all are needed
Question 29
Question
Which of these molecules can cross the membrane by simple diffusion?
Answer
-
a. water
-
b. small ions
-
c. glucose
-
d. small proteins
Question 30
Question
A cell is placed in a solution. Over time the cell begins to shrink. The solution is:
Answer
-
a. isotonic
-
b. hypertonic
-
c. hypotonic
-
d. isoosmotic
Question 31
Question
The sodium–potassium pump (Na-K-ATPase; sodium pump) produces which situation?
Answer
-
a. high sodium inside, high potassium concentration outside cell
-
b. high sodium and potassium inside cell
-
c. high sodium and potassium outside cell
-
d. high potassium inside, high sodium concentration outside cell
Question 32
Question
Which type of molecules can diffuse across a lipid bilayer?
Answer
-
a. small, polar
-
b. small ions
-
c. lipids
-
d. all can
Question 33
Question
Which organelle is the site of ATP production/energy conversion?
Answer
-
a. Golgi
-
b. mitochondria
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c. ER
-
d. Centriole
Question 34
Question
. Which organelle is the main site of protein production?
a. rough ER b. mitochondria c. ribosome d. Golgi
Answer
-
a. rough ER
-
b. mitochondria
-
c. ribosome
-
d. Golgi
Question 35
Question
What protein is needed to be in the membrane for endocytosis to occur?
Answer
-
a. colchicines
-
b. clathrin
-
c. collagen
-
d. microtubules
Question 36
Question
Which organelle is involved in modifying and packaging molecules for transport within and to the outside of the cell ?
Answer
-
a. ribosomes
-
b. mitochondria
-
c. golgi
-
d. centriole
Question 37
Question
Which cytoskeletal elements are composed of tubulin?
Answer
-
a. microtubules
-
b. microfilaments
-
c. intermediate fibers
-
d. all are
Question 38
Question
Which of these is NOT part of the endomembrane system?
Answer
-
a. Golgi
-
b. ER
-
c. Nuclear membrane
-
d. all are part of the system
Question 39
Question
Where are ribosomes formed?
Answer
-
a. nucleolus
-
b. centrosome
-
c. golgi
-
d. cilia
Question 40
Question
Which of these would NOT be a function for a lysosome?
Answer
-
a. formation of lipids
-
b. destroying bacteria
-
c. breaking down bone
-
d. recycling organelles
Question 41
Question
What is produced in the smooth ER
Answer
-
a. ribosome
-
b. proteins
-
c. DNA
-
d. lipids
Question 42
Question
A cell replicates its DNA/chromosomes during:
Answer
-
a. G1
-
b. S
-
c. G2
-
d. Mitosis
Question 43
Question
T or F The receptors which are linked to “G” proteins both bind to hormones and cause those hormones to enter the cell.
Answer
- True
- False
Question 44
Question
. T or F Cell membranes have proteins in them, some of which are enzymes.
Answer
- True
- False
Question 45
Question
. What occurs during G1 of the cell cycle?
Answer
-
a. growth for functioning
-
b. DNA replication
-
c. growth for division
-
d. separation of chromosomes
Question 46
Question
T or F TSH is released from the hypothalamus and causes the pituitary to produce TRH.
Answer
- True
- False
Question 47
Question
What occurs during metaphase?
Answer
-
a. spindles form
-
b. chromosomes line up in a straight line
-
c. chromosomes are pulled apart
-
d. new nuclei form
Question 48
Question
48. Which would occur with hyperthyroidism?
Answer
-
Cold intolerance
-
b. weight gain
-
c. sluggishness
-
d. none is correct
Question 49
Question
T or F The main hormone produced by the thyroid gland is T3, but the most active hormone is T4.
Answer
- True
- False
Question 50
Question
The structural and functional unit of life is:
a. atom b. molecule c. cell d. tissue
Answer
-
a. atom
-
b. molecule
-
c. cell
-
d. tissue
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