BMD 320 Exam 1 info

You are trying to study the lysosome by creating a lot of different mutations in eukaryotic cell model. Best model? A. Zebrafish B. Mouse C. C. elegans D. Yeast

D

Your cell has too much ATP, it therefore signals to the mitochondria to decrease ATP production. This is an example of? A. Diffusion B. Osmosis C. Positive feedback D. Negative feedback

D

To create the sugar phosphate backbone of DNA, a bond forms, during which a molecule of water is created. What reaction? A. Redox reaction B. Hydrolysis C. Michael addition D. Dehydration synthesis

D

A carrier protein that moves glucose and sodium in opposite directions inside and outside the cell, respectively is considered a(n) A. Antiporter B. Symporter C. Uniporter D. Pump

A

After an action potential has been reached and the cell membrane is repolarizing what happens to the voltage gated channels? A. K+ channels open and Na+ channels close B. Na+ channels open and K+ channels close C. Cl- channels open and Na+ channels close D. Na+ channels open and Cl- channels close

A

All of the following are lipids except A. Glutamic acid B. Cholesterol C. Phosphatidylcholine D. Steroid hormones

A

Phospholipids have a polar head and a non polar tail- this makes these molecules? A. Amphipathic B. Nonpolar C. Polar D. Ionic

A

What is the key difference between prokaryotic cells and eukaryotic cells? A. Prokaryotic cells lack membrane bound organelles B. Eukaryotes lack membrane bound organelles C. Prokaryotic organisms cause more diseases D. Eukaryotic organisms cause more diseases

A

What is the purpose of cholesterol in the cell membrane? A. Maintain membrane fluidity B. Flip the phospholipids on the outer leaflet of the inner leaflet of the plasma membrane C. Flip the phospholipids on the inner leaflet to the outer leaflet of the plasma membrane D. Maintain the electrochemical gradient

A

What type of model will allow you to KO a gene in a specific organ or organ system (i.e. the heart) only? A. Lox Cre KO B. In utero KO C. Transgenic mouse D. None of these models will work

A

Which kind of microscope will allow you to view live cells? A. Light microscope B. Electron microscope C. Scanning electron microscope D. Transmission electron microscope

A

Which of the following elements is most abundant in the human body? A. Carbon B. Sodium C. Selenium D. Calcium

A

Which of the following is NOT one of the major phospholipids found in the cell membrane? A. Glycosphingolipids B. Sphingomyelin C. Phosphatidylcholine D. Phosphatidylserine

A

Which of the following is an excitatory neurotransmitter? A. Acetylcholine B. GABA C. Glycine D. Dopamine

A

Which of the following stimuli can open or close a channel? A. All of these B. Mechanical stimulation C. Changes in voltage D. Changes in pH

A

Which of the following utilizes primary active transport? A. Sodium potassium pump B. Aquaporins C. Sodium glucose co-transporter D. Acetylcholine receptor

A

You created a cell line that has trouble creating phosphotidylcholine. Which organelle has been effected? A. Smooth endoplasmic reticulum B. Rough endoplasmic reticulum C. Golgi apparatus D. Peroxisome

A

ATP is made from an amino acids. A. True B. False

B

All membranes within the cell have the same composition of phospholipids. A. True B. False

B

In an open Na+ channel which way would the Na+ flow in a cell? A. From inside the cell to outside the cell B. From outside the cell to inside the cell C. Na+ is not found in normal physiology D. Na+ does not flow, it's at equilibrium inside and outside the cell

B

There is a build up of sphingomyelin in Niemin Pick's disease. What organelle is dysfunctional? A. Peroxisome B. Lysosome C. Vacuole D. Mitochondria

B

There is higher K+ inside your cell. If K+ channels on the cell membrane were to open, which way would the K+ go? A. Inside the cell B. outside the cell C. It would not move D. You cannot tell from the question

B

What kind of bonds are between the base pairs in DNA? A. Ionic bond B. Hydrogen bonds C. Covalent bonds D. Van der Waals forces

B

What type of amino acids make up non-transmembrane integral proteins? A. Polar B. Nonpolar C. Charged D. Hydrophilic

B

What type of molecule is this? A. Sugar B. Fatty acid C. Amino acid D. Nucleotide

B

Which of the following is technically NOT an organelle? A. Mitochondria B. Ribosome C. Nucleus D. Golgi Apparatus

B

Which of the following microscopes allow you to determine colocalization? A. Fluorescence microscope B. Confocal microscope C. Light microscope D. Transmission electron microscope

B

Which of the following organelles is believed to be an ancient bacteria? A. Ribosome B. Mitochondria C. Golgi apparatus D. Vacuole

B

Which of the following transports solutes against the concentration gradient? A. A carrier, via secondary active transport B. A transporter C. A channel D. None of the above

B

You have drank too much at a frat party. Which organelle is going to be working overtime to help you feel better? A. Rough endoplasmic reticulum B. Peroxisome C. Vacuole D. Nucleus

B

I have added the GFP gene from the jellyfish into a mouse. What kind of organism is this? A. Genetically modified organism B. Can't tell C. Transgenic

C

What is this the basic structure of? A. Sugar B. Fatty acids C. Amino acids D. Nucleic acids

C

What process turns DNA into RNA? A. Reverse transcriptase B. Translation C. Transcription D. None of these

C

Which of the following charged particles are found at a higher level inside of the cell to help maintain the eletrochemical gradient? A. Calcium B. Sodium C. Potassium D. Chloride

C

Which of the following enzymes plays a role in moving phospholipids that are found initially in the extracellular space to the outside of an endocytosed vesicle? A. Phospholipidase B. Scarmbalase C. Flippase D. Floppase

C

Which of the following is part of your genetic code? A. Uracil B. Threonine C. Thymine D. Methionine

C

Which of the following is the pH of a typical cell cytoplasm? A. 12 B. 1 C. 7.4 D. 5

C

Which of the following are differences between RNA and DNA? A. Uracil in RNA and thymie in DNA B. DNA is double stranded and RNA is single stranded C. RNA has catalytic activity, DNA does not D. All of these are difference between DNA and RNA

D

Which of the following bonds share their electrons equally? A. Polar covalent B. Hydrogen C. Ionic D. Non-polar covalent

D

The cell membrane is made of _____________. A. Phospholipids B. Fatty acids C. Glycolipids D. All of these

D

Which of the following is an uncharged amino acid? A. Serine B. Aspartic acid C. Tyrosine D. Valine

D