Solve the following equation.                     

Find the product for the following expression.                

Simplify the following product and write the result in standard form.                

Determine, using interval notation, the domain and range for the following function.                    

Which of the following statements about the γ-tubulin ring complex is false?

Rod photoreceptor cells are responsible for vision in dim light. The figure shows the pathway through which rod photoreceptor cell senses light. Predict whether the following mutations will result in a) night blindness (poor or no eye-sight in dim light)  b) prolonged response to a short light flash  Hint: The block of the activation pathway will result in night blindness.  The inhibition of the deactivation pathway will result in prolonged response to a short light flash. Rhodopsin is inactive guanylyl cyclase is inactive Rhodopsin kinase is inactive Regulator of G-protein signaling protein is inactive The cGMP phosphodiesterase is inactive

For each statement below, determine whether each condition will promote microtubule polymerization or depolymerization. The addition of a drug that caps the plus end of the microtubule and prevents subunit exchange at the plus end will promote microtubule . The addition of a drug that prevents GDP-tubulin from dissociating from the polymer will promote microtubule . The addition of a drug that inhibits GTP hydrolysis in subunits incorporated into the polymer will promote microtubule . The addition of a drug that promotes GTP hydrolysis in the microtubule will promote microtubule .

The figure below shows how normal signaling works with a Ras protein acting downstream of a receptor tyrosine kinase.  You obtained a cell line, in which the Ras protein is mutated and cannot be activated. Which of the following conditions will turn on this signaling pathway in this cell line? Indicate Yes or No for each condition.   addition of a drug that prevents protein X from interacting with Ras addition of a drug that decreases the activity of protein Y addition of a drug that decreases the activity of the receptor tyrosine kinase addition of the signal molecule that activates the receptor tyrosine kinase

Select the size closest to the diameter for actin filament, intermediate filament, and microtubules from the options provided actin filament   intermediate filament   microtubules  

Indicate whether each of the following statements regarding skeletal muscle contraction is likely to be true or false. When a muscle cell receives a signal from the nervous system, voltage-gated calcium channels open in the T-tubule membrane. During muscle contraction, the Z discs move closer together as the myosin heads walk toward the plus ends of the actin filaments. When the cytoplasmic calcium concentration increases, a change in the conformation of troponin leads to changes in tropomyosin such that it blocks the binding of myosin heads to the actin filament. The changes in voltage across the plasma membrane that occur when a muscle cell receives a signal from the nervous system cause an influx of Ca2+ from the cytoplasm to the sarcoplasmic reticulum, triggering a muscle contraction.