BIOLOGY ASSIGNMENTA. Fill in the blanks with the most appropriate words. Each blank represents one word. Each question is worth two points. (20 points)1.The voltage difference across the membrane is referred to as the____________________________________________________________________.2._________________________________________________________ uses energy to move solutes across a membrane against the concentration gradient.3.Coated pits are “coated” with a protein called _____________________________.4.Neurons pass signals to _________________________,________________________and other neurons.5.Plant cells engage in local signaling through direct connections with each other bymeans of __________________________________________.6.One of the three stages of cell signaling, ___________________________________, is usually a complex series of steps that interprets a signal for the cell.7.A chemical such as a hormone, known as the “signal” is also known as the___________________________________________________________. 8. The signal’s first contact with the cell is via a(n) ____________________________________________________________ (two blanks) located on the plasma membrane.9. In the G-coupled Protein Receptor model that we discussed, the activated G protein in turnactivates the enzyme ____________________________________________________.10. The function of the enzyme mentioned in question 9 is to convert ATP to a chemical thatin turn activates another enzyme called________________________________________________________.B. Answer the following questions in one or two sentences. Remember that the answer must be in your own words. If it is too much like someone else’s answer or a passage from the text, you will not receive credit. Draw pictures if you wish, but you will be graded on the WORDS.1. Explain how co-transport works.2. Explain the difference between pinocytosis and phagocytosis. Be mindful of the warning given you in the video about the use of terms.3. In what way are paracrine signaling and synaptic signaling different from each other?4. What is second messenger? Why is it called that?C. 1. Testosterone passes through the plasma membrane and binds to a receptor protein in the_______________________________________.2. Some channel proteins are activated when the signal binds to them, opening a gate. A signal that binds to a protein this way is called a________________________.3. In some trends deductions, a protein kinase will be activated by ATP. This protein kinase thengets involved in activating another protein kinase with ATP. This process may go on for several protein kinase molecules, in a process called a(n)____________________________________________________________________.4. Transcription is DNA making RNA. A cell signal that ultimately influences transcription would ultimately finish its transduction process by activating a transcription factor in the_____________________________________
