Overview Flashcards
Which of the following is an INCORRECT statement about starch and cellulose?
Starch and cellulose form helical structures
Starch helps with storage while cellulose provides structure to plants
We can digest starch but not cellulose
Starch contains alpha (1-4) while cellulose contains beta (1-4) glycosidic linkages
Starch and cellulose are polymers of glucose
Starch and cellulose form helical structures
For the RNA sequence given below, write the complementary DNA sequence
5’-ACUGGACUUAAG-3’
5’-CTTAAGTCCAGT-3’ 5’-GAATTCAGGTCA-3’ 5’-UGACCUGAAUUC-3’ 5’-TGACCTGAATTC-3’ 5’-CUUAAGUCCAGU-3’
5’-CTTAAGTCCAGT-3’
A steroid hormone, Aldosterone, binds to an intracellular receptor. When it does, the resulting complex is able to do which of the following?
cause Ca+2 ions in post synaptic membrane to enter the synaptic cleft
open channels in the nuclear envelope for cytoplasmic molecules to enter
enter the nucleus and activate genes
mediate the transfer of phosphate groups to/from ATP
open channels in the membrane for other substances to enter
enter the nucleus and activate genes
Which of the following events takes place in the thylakoid of the chloroplast?
oxidation of glucose into two pyruvate molecules
transfer of electrons through a series of redox reactions
substrate-level phosphorylation to make ATP
breakdown of an acetyl coenzyme A to carbon dioxide
Calvin cycle
transfer of electrons through a series of redox reactions
Think back to Hershey and Chase experiment using 32P and 35S labeled bacteriophages. Hypothetically, if they would have found 35S labeled bacteriophages in the pellet, then they would have concluded that:
Lipids were the genetic material Carbohydrates were the genetic material Protein was the genetic material DNA was the genetic material RNA was the genetic material
Protein was the genetic material
Dehydration (or condensation) reactions are used in the formation of which of the following?
proteins nucleic acids triglycerides polysaccharides All options are true.
All options are true.
An organism that has adapted to survive in extremely HOT environments will be expected to have_______
ability to metabolize methane for energy
Enzymes with high optimal temperatures
predominantly integral membrane proteins
H+ pumps in membrane
phospholipids with only unsaturated fatty acids in membranes
Enzymes with high optimal temperatures
A 10,000 nucleotide long DNA through several steps forms an mRNA that is 800 nucleotides long which is then translated to protein. This would indicate that:
the pre mRNA is present in Prokaryotes
There are no stop codons present
there are multiple stop codons present
there are introns present in pre- mRNA
there are multiple promoter sequences present
there are introns present in pre- mRNA
In order to begin the process of transcription in Eukaryotes, which of the following must be present?
mRNA, RNA polymerase II, amino acids tRNA, mRNA, DNA DNA, RNA polymerase II, ribosomes DNA, RNA polymerase II, transcription factors DNA, mRNA, ribosomes
DNA, RNA polymerase II, transcription factors
If cells were treated with a toxin that prevented a and b tubulin from assembling what could be an immediate consequence?
Amoeboid movement will not occur Cytoplasmic streaming will not occur Muscle contraction will be blocked Vesicle movement in cell would be blocked All options are true.
Vesicle movement in cell would be blocked
A toxin was added that specifically blocks complexes of the electron transport chain in both photosynthesis and respiration. A consequence of this will be:
fermentation will occur pyruvate will get oxidized ATP will not be made Calvin cycle will occur Protons will be pumped against concentration gradient
ATP will not be made
