E2 Clicker Flashcards
Saturated fatty acids have __________ compared to unsaturated fatty acids which is why they exist as a __________ at room temperature. A) fewer H atoms; solid B) more C atoms; solid C) several C=C double bonds; liquid D) no C=C double bonds; solid E) more fatty acids; liquid
D
What is a major difference between saturated and unsaturated fats? A) At room temperature, saturated fats are liquid and unsaturated fats are solid. B) Unsaturated fats have a flat molecular structure, but saturated fats are kinked. C) Saturated fat molecules are packed together loosely, whereas unsaturated fats are tightly packed. D) Unsaturated fats contain carbon-to-carbon double bonds, but saturated fats do not.
D
Which of the following statements about phospholipids is false? a. The phosphate functional group and glycerol form the hydrophobic head of a phospholipid. b. A phospholipid has two fatty acids whereas a triglyceride has three fatty acids. c. Phospholipids are amphipathic (i.e., they have two opposing chemical properties). d. The phosphate functional group and glycerol form the hydrophilic head of a phospholipid. e. Biological membranes are characterized by a phospholipid bilayer structure.
A
Why do T and A only share two hydrogen bonds? A: That’s just how it is…no explanation is possible. B: There are only 2 hydrogens available in the adenine molecule. C: The C=O bond in thymine is non-polar. D: The C-H bond in adenine is non-polar. E: The C-H bond in adenine is too far away to form a hydrogen bond with the C=O bond in thymine.
D
Which of the below are identical strands of DNA? 1: 5’-TTC CGG ATA-3’ 2: 3’-AAG GCC TAT-5’ 3: 3’-TAT CCG GAA-5’ 4: 3’-ATA GGC CTT-5’ A: 1 and 2 B: 2 and 3 C: 1 and 4 D: 2 and 4
C
If one strand of a DNA molecule has the sequence 5’-TTC CGG ATA-3’ A: The complement strand is 5’-TTC CGG ATA-3’ B: The complement strand is 3’-AAG GCC TAT-5’ C: The complement strand is 3’-TAT CGG GAA-5’ D: The complement strand is 3’-ATC CGG AA-5’ E: The complement strand is 3’-TTC CGG ATA-5’
B
If one strand of a DNA molecule has the sequence 5’-TTC CGG ATA-3’ A: The complement strand is 5’-TTC CGG ATA-3’ B: The complement strand is 5’-AAG GCC TAT-3’ C: The complement strand is 5’-TAT CCG GAA-3’ D: The complement strand is 3’-ATA GGC CTT-5’
C
The following is a diagram of:
A: Transcription
B: Polypeptide synthesis
C: DNA Replication
D: RNA synthesis
C
The sequence of nucleotides in mRNA and tRNA is
A: transcribed from proteins
B: transcribed from DNA
C: is used to make DNA
D: there are no nucleotides in RNA
B
What element is found in proteins that is absent in the CHOs and Lipids?
A: Carbon
B: Hydrogen
C: Oxygen
D: Nitrogen
E: All of the above
D
