Quiz 1. lectures 1 -3. Flashcards
1
Q
1. Under the microscope, various organelles can be seen to move rapidly about the cell. What cell components are responsible for the structures and energy associated with this movement? Select one: a. plasma membranes and channel proteins b. chloroplasts and microtubules c. golgi apparatus and lysosomes d. cell membranes and ribosomes e. cytoskeleton and mitochondria
A
e. cytoskeleton and mitochondria
2
Q
2. Nucleic acids such as DNA are polymers of Select one: a. fatty acids b. sugars c. monosaccharides d. amino acids e. nucleotides
A
e. nucleotides
3
Q
3. Proteins are polymers of Select one: a. monosaccharides b. fatty acids c. nucleotides d. sugars e. amino acids
A
e. amino acids
4
Q
4. Which of the following is most closely associated with protein synthesis? Select one: a. centrosomes b. ribosomes c. chromosomes d. nucleosomes e. lysosomes
A
b. ribosomes
5
Q
5. A solution is made acidic by the addition of Select one: a. dissociated water b. hydroxyl ions c. electrons d. hydrogen ions e. neutrons
A
d. hydrogen ions
6
Q
6. The chemical process by which monomers are linked to form polymers is known as Select one: a. base pairing b. synthesis c. peptide bonding d. condensation e. hydrolysis
A
d. condensation
7
Q
7. Which of the following are NOT directly associated with the cell's cytoskeleton? Select one: a. dynein motor molecules b. microtubules c. endoplasmic reticulum d. actin filaments e. tubulin dimers
A
c. endoplasmic reticulum Correct
8
Q
8. Plants can polymerize glucose monomers to make: Select one: a. fatty acids b. maltose c. seeds d. glycogen e. cellulose
A
e. cellulose
9
Q
- Carbon is well suited to be the backbone of organic molecules because
Select one:
a. it is an organic molecule
b. its covalent bonds are the strongest known
c. it can form buckyballs and nanotubes
d. it can be obtained from carbon dioxide in air
e. it can form bonds with a large number of other elements
A
e. it can form bonds with a large number of other elements
10
Q
- Living things primarily contain the following elements:
Select one:
a. glucose, oxygen, proteins and water
b. carbon, hydrogen, sodium and potassium ions
c. carbon, hydrogen, oxygen, and nitrogen
d. sulfur, carbon, iron, and hydrogen
e. carbon dioxide, water and salt
A
c. carbon, hydrogen, oxygen, and nitrogen
11
Q
11. All the following are found in chloroplasts except Select one: a. stroma b. thylakoids c. grana d. cristae e. chlorophyll
A
d. cristae
12
Q
- Solutions of pH 7.0 are considered neutral because
Select one:
a. they are the same pH as rainwater
b. they have a hydrogen ion concentration of zero
c. they have the same concentration of hydrogen and hydroxide ions
d. they are non polar
e. they only contain water molecules
A
c. they have the same concentration of hydrogen and hydroxide ions
13
Q
- Nucleic acids, such as DNA, contain the following chemical elements:
Select one:
a. sulfur, carbon, iron, and hydrogen
b. carbon dioxide, water and salt
c. carbon, hydrogen, sodium and potassium
d. carbon, hydrogen, oxygen, nitrogen and phosphorus
e. glucose, oxygen, proteins and water
A
d. carbon, hydrogen, oxygen, nitrogen and phosphorus
14
Q
14. The person who originally named 'cells' after observing cork with a microscope was Select one: a. Antony van Leeuwenhoek b. Robert Hooke c. Matthias Schleiden d. Bert Newton e. Charles Darwin
A
b. Robert Hooke
15
Q
- Which of these cell components is mismatched with its function?
a. golgi apparatus - modification of proteins and lipids
b. endoplasmic reticulum - site of RNA synthesis
c. plasma membrane - regulates import and export of molecules
d. cytoskeleton - cell shape and movement
e. lysosomes - intracellular digestion
A
b. endoplasmic reticulum - site of RNA synthesis
