BMS 300 EXAM1; QUESTIONSANDANSWERS

BMS 300 EXAM1; QUESTIONSANDANSWERSWhich of the following bonds are responsible for the dipole moment of awatermolecule? a) Hydrogen bonds b) Ionic bonds c) Nonpolar bonds d) Covalent bonds - ANSWER d) Covalent Bonds Clinical trials are underway testing the effectiveness of mRNAvaccines against the HIV, Zika, rabies, and Ebola viruses. If an mRNA vaccine were injectedinto an individual, how would the mRNA be read? a) 3'-5' by the larger ribosomal subunit b) 5'-3' by the larger ribosomal subunit c) 3'-5' by the small ribosomal subunit d) 5'-3' by the small ribosomal subunit - ANSWER d) 5'-3' by the small ribosomal subunit What two things MAY have a nuclear localization factor? a) DNA, RNA, and histone proteins b) DNA and RNA c) RNA and polymerase proteins d) DNA and secreted proteins - ANSWER c) RNA and Polymerase proteinsWhich of the following ions has a higher intracellular concentration? BMS 300 EXAM1; QUESTIONSANDANSWERS ONLYSTRUDENTS STORE 2025 ALL THE BEST ONLYSTRUDENTS STORE 2 DO NOT COPY b) Ca2+ c) Cl- d) K+ - ANSWER d) K+ What is the name of the polymerase that transcribes mRNA? a) RNA polymerase I b) RNA polymerase II c) RNA polymerase III d) All of the above - ANSWER b) RNA polymerase II Which of the following proteins would have a signal peptide? a) Na+/K+ ATPases b) Spliceosomes c) Clathrin Proteins d) Myosin Motor Proteins - ANSWER a) Na+/K+ ATPases What would you expect the DNA in mitochondria to be? a) Bound to histones b) Contained in a nucleus c) Circular d) Organized in chromosomes - ANSWER c) Circular Between the time pre-mRNA is made and the time when introns are removed, atype of RNA called SnoRNA adds a methyl group to some of the bases onthepre-mRNA. Where would you expect SnoRNA to work? a) Na+ ONLYSTRUDENTS STORE 2025 ALL THE BEST ONLYSTRUDENTS STORE 3 DO NOT COPY b) Nucleus c) Rough endoplasmic reticulum d) Cytoplasm - ANSWER b) Nucleus The R groups of an integral protein that interact with the extracellular fluidaremost likely? a) Hydrophobic b) Hydrophilic c) Amphipathic d) Phospholipids - ANWER b) Hydrophilic Embryonic gern cells are transcriptionally dormant. You would expect thesecells to have? a) High levels of spliceosomes b) DNA primarily in euchromatin form c) DNA primarily in heterochromatin form d) High levels of ATP synthesis - ANWER c) DNA primarily in heterochromatin form AMPA receptors bind the neurotransmitter glutamate in the extracellular space. Binding opens the AMPA receptor and permits the movement of ions acrosstheplasma membrane. AMPA receptors are examples of what type of channels?a)Voltage-gated channels b) Ligand-gated channels c) Mechanically-gate channels d) Non-gated channels - ANSWER b) Ligand-gated channels Capsaicin is known as the "spicy molecule." Having just consumed spicyfood, you might reach for a glass of water to rinse away the spice, but the water