Signal amplification is essential for many signaling

Which of the following is not a component of rRT PCR DNA probe virus particle Primers Reverse transcriptase Reaction Buffer

Why do we use no template control in the reaction To screen for cDNA To test for viral RNA To screen for any contamination in the reagents To screen for other nucleic acid in the reaction

How many types of controls do you need to have in the Microneutralization Assay One Virus Control Two Sample Control and Virus Control Two Virus Control and Cell Control No controls are need

A Phosphate Group Lipid D Nonaqueous Cytosol Nonaqueous Aqueous Nonaqueous Environment Cytosol Environment B C Nonaqueous Cytosol Nonaqueous Environment Nonaqueous Cytosol E F Aqueous Nonaqueous Cytosol Environment Nonaqueous Environment Aqueous Cytosol Nonaqueous Environment Figure 1 Proposed models of hypothetical plasma membranes Each model represents a small portion of the hypothetical plasma membrane and illustrates the orientation of the phospholipids A student proposes six models of a hypothetical plasma membrane Figure 1 Identify the model that best represents the plasma membrane of a hypothetical cell that exists in a nonaqueous environment and whose cytosol is similar to that of an animal cell Provide TWO pieces of reasoning to support your identification AGE FOR ANSWERING QUESTION 8

How do we calculate the vital capacity Multiple Choice Add expiratory and inspiratory reserve volume and the tidal volume Subtract tidal volume from the sum of expiratory and inspiratory reserve volume Divide tidal volume by total lung volume Add expiratory and inspiratory reserve volume

Which of the statements correctly describes the vital capacity Multiple Choice The amount of air a person can exhale All the air that can be exhaled after a full inhalation All the air that can be inhaled on top of the normal breathing The total volume of air that is inside a person s lung

D Protein synthes 2 During ion exchange chromatography why are proteins with different charges separated A Polarity B Ionic strength C Molecular weight D Hydrophobic interactions ofor to

Pyruvate reacts with which absorbs visible light at nm a a Malonate 450 b ATP 480 c DNPH 510 d PEP 510 Question 6 1 point Listen A What is Vmax a The velocity at which enzyme E is saturated with substrate S b The initial velocity of the enzyme at v S One half of the limiting enzymatic rate

You have isolated the enzyme Milleniase from the rare Y2K bug This enzyme cleaves the first two numbers off of four digit dates You flex your skills as an enzymologist and come up with the following graph of initial velocity as a function of substrate concentration A 40 35 30 25 20 15 10 5 0 10 20 30 40 50 60 S From the graph estimate KM a 5 b 7 c 35

O alyzes a The final step of glycolysis b None of these c The final step of the citric acid cycle d The first step of glycolysis Question 2 1 point Listen Tertiary structure of an enzyme forms the catalytic center that is called a Inhibitory site b Negative site c Neutral site