Watch the following movie clip from Lord of the Rings: The Fellowship of the Ring. In this clip, Gandalf the Wizard stops the fire demon from passing across the stone bridge. Explain how this clip is similar to the role of the plasma membrane. Use as much detail (about the membrane, not the movie) to support your answer.

Diffusion and Osmosis What is your prediction about the effect of molecular weight on rate of diffusion? What is your prediction about the effect of temperature on rate of diffusion?

Label and define the following terms

PART D: CALCULATING THE ACTUAL SIZE OF A CELL. Once you know your microscope's diameter of the field of view, you can now calculate the actual size of your specimen. t you The ACTUAL SIZE of the specimen is the real size of the cell you are looking at. When you look at the cells through the microscope, the cells look very tiny. It is possible to determine the actual size of the cells you are looking at under LP.MP and HP. We will determine the actual size of a cell under HP. Step 1- Look at the cells under HP MAG. Step 2- Pick one cell you want to know the size of. Step 3- Imagine that this cell is placed along the left side of the field of view. (see example) Step 4-Estimate how many cels could fit across the field of view. 5- Record your answer Step 6- Use the formula below to calculate the actual size of your cell NOTE: Cells are very tiny therefore; the size of a cell is calculated in micrometers (um) and not mm. Cell size in (mm) ACTUAL SIZE OF CELL= HIGH POWERFOV.diameter of…

IN the figure for D: The organization of a protein that normally resides in the plasma membrane in shown in the figure below. The boxes labeled 1,2 3 and 4 represent membrane-spanning sequences and the arrow represents a site of action of signal peptidase. Given this diagram, which of the following statements must be true? (C) (D) oplasmic Reticulum The N-terminus of this protein is in the ER lumen The mature version of this protein will span the membrane twice, with both the N- and C-terminus in the cytoplasm. Two of the answers are correct The C-terminus of this protein is in the ER lumen

Can you please help out with the correct answers. Thanks

What is cytoplasmic streaming? What problem for larger cells is addressed by cytoplasmic streaming

There are 4 basic tissues in the human body. For each of the following organs/structures describe the location and function of at least three basic tissues found in them. Heart and stomach You have received GHS 1 million as a scientist to develop a vaccine for corona virus. You have been able to develop the vaccine but now the challenge is how the vaccine will enter the cells of the body when you inject it. From your knowledge of the structure of the cell membrane give and explain 2 features you can exploit in order for the vaccine to go across the cell membrane into the cell.

Question Completion Status: QUESTION 19 Which of the following structures is NOT a part of the plasma membrane? Glycoprotein Integral protein Cholesterol Mitochondria O phospholipid QUESTION 20 Which of the following does not affect the rate of simple diffusion of a substance Concentration gradient Temperature O Size of the molecule O Distance O Number of carrier proteins Click Save and Submit to save and submit. Click Save All Answers to save all answers. P Type here to search

True or False? The selective permeability of the plasma membrane allows all substances to pass through the membrane, ensuring that the inside of the cell is in constant interaction with its external environment.