EXAM 1
The ability of water to stick to other molecules describes which property of water?
adhesion
Which of the following is true of hypotonic solutions?
A. water will move inside the cell
B. solutes will move inside the cell
C. the cell will shrivel
D. there will be equal movements inside and outside of the cell
A. water will move inside the cell
The Rough ER is similar to the Smooth ER because:
a. they both synthesize macromolecules
b. they are both studded with ribosomes
c. they both make proteins
d. both a & c
a. they both synthesize macromolecules
The color black is dominant over white. In complete dominance, a rabbit that is heterozygote will result in which of the following phenotypes?
a. black
b. white
c. grey
d. spots of black and white
d. spots of black and white
The Panthera leo is a large cat native to Africa and India. Which domain and kingdom does this specie belong to?
Domain: Eukarya
Kingdom: Animalia
An inhibitor molecule is found blocking the active site of an enzyme. This mechanism is referred to as:
a. phosphorylation
b. feedback inhibition
c. competitive inhibition
d. noncompetitive inhibition
c. competitive inhibition
A cell has 9 chromosomes. How many sister chromatids would it have during prophase?
a. 9
b. 18
c. 27
d. 36
b. 18
What is the correct gene sequence to the RNA:
5' AAACGCAA 3'?
3' TTTGCGTT 5'
In a polar covalent bond:
a. atoms gain complete charges due to the complete transfer of electrons
b. atoms are equally sharing electrons
c. atoms gain no charge
d. atoms gain partial charges
d. atoms gain partial charges
During the secondary structure of protein formation:
a. hydrogen bonds will hold the amino acid backbone
b. peptide bonds will link the amino acids
c. the 3-dimensional shape of the protein will form
d. multiple polypeptides come together to form a protein
a. hydrogen bonds will hold the amino acid backbone
If cytokinesis did not occur:
a. the nuclear envelope will not reform
b. the nucleus will not split in half
c. the cell will contain two nuclei
d. both b & c
c. the cell will contain two nuclei
a. 10
b. 20
c. 30
d. 60
b. 20
If xenon has an atomic number of 54 and a mass number of 108, how many neutrons does it have?
a. 27
b. 54
c. 100
d. 108
b. 54
Which of the following is true of the formation of galactose + glucose?
a. a polysaccharide will form
b. they are held by a phosphodiester bond
c. a hydrolysis reaction will occur
d. it is a type of anabolic reaction
d. it is a type of anabolic reaction
Glycolysis is located in the ______ and yields a total of _____ ATP
a. matrix; 4
b. matrix; 2
c. cytoplasm; 4
d. cytoplasm; 2
c. cytoplasm; 4
An antibiotic interferes with the ability of the ribosome to move. What effect would this have on a cell?
a. the protein synthesized will be shorter than usual
b. the protein synthesized will be longer than usual
c. the mRNA will use RNA polymerase instead
d. no proteins will be produced
d. no proteins will be produced
What is the hydroxide ion concentration of a solution with a pH of 5. Is this solution acidic or basic?
1 x 10-9
ACIDIC!!
Which of the following is true of unsaturated fatty acids?
a. it contains a double bond
b. it is tightly packed
c. it has a high heat capacity
d. it is solid at room temperature
a. it contains a double bond
The ETC is located in _______ and functions to ________.
a. cytoplasm; to produce pyruvate
b. matrix; to produce acetyl-COA
c. innermembrane; to produce electron carriers
d. innermembrane; to produce a proton gradient
d. innermembrane; to produce a proton gradient
The enzyme ____ uncoils DNA, while ______ keeps the strands open to prevent the bases from bonding.
a. helicase; DNA polymerase
b. DNA polymerase
c. helicase; topoisomerase
d. topoisomerase; SSBP
d. topoisomerase; SSBP