If you were to remove the ER retrieval signal (KDEL) from protein disulfide isomerase (PDI), which is normally a soluble resident of the ER lumen, where would you expect the modified PDI to be located?
Siganl tansducing tirmeric G proteins consist of three subunits designated as alpha, beta, gamma. Suppose you have isolated a mutant G alpha subunit that has an increased GTPase activity. What effect would this mutation have on the G protein and the effector protein? Why?
Please help with ideas: A report on DIVERSITY IN SUPPORT STRUCTURES AND THEIR FUNCTIONS IN UNICELLULAR PROTOCTISTS.
Download the image (attached) 1. Name the structure to which the arrow points. 2. Give an example of a specific organism which has the structure. 3. Briefly describe at least one function the structure performs (what it helps the organism do).
I'm having a diffucult time understanding free energy vs activation energy are they the same? I know free energy is the portion of a system's energy that is available for work but what is this compared to the activiation energy?
Imagine that a starving cell reached the stage where every bit of its ATP was depleted and converted to ADP plus phosphate. If that cell were placed in fresh nutrient broth at this point, would it recover and survive? Explain your answer on the basis of what you know of glucose breakdown.
Often, prokaryotic cells exist as simple unicellular organisms, but in some species, prokaryotic cells can grow together in colonies or filaments. In addition, some species, such as Cynaobacteria or Myxobacteria, demonstrate intercellular communication, or might even produce specialized cells and structures. However, only euk
I need guideness on the physical and metabolic constraints limit cells size? And how an enormous cell encounter and adapations would help large cells survive?
1. Answer three of the following five questions in a 3-4 page summary. The integrity of the plasma membrane is essential for cellular survival. Could the immune system utilize this fact to destroy foreign cells that have invaded the body? How might cells of the immune system disrupt membranes of foreign cells? (Two hints: virtu
Why is oxygen needed for cellular respiration?
Which is faster facilitated diffusion or active transport? Ideas are given.
I am trying to compare process osmosis and diffussion and how does the two process help a plant leaves remain firm? 2. How exactly does a cell membrane structure related to its function?
Of the pathways in respiration, which one produces the least energy? The Next least? The Most? How do you know this, and why is this important to the environement we live in (ie on Earth?)? Ideas are presented.
1. The integrity of the plasma membrane is essential for cellular survival. Could the immune system utilize this fact to destroy foreign cells that have invaded the body? How might cells of the immune system disrupt membranes of foreign cells? (Two hints: virtually all cells can secrete proteins, and some proteins form pores in
Often, prokaryotic cells exist as simple unicellular organisms, but in some species, prokaryotic cells can grow together in colonies or filaments. In addition, some species, such as Cynaobacteria or Myxobacteria, demonstrate intercellular communicate , or might even produce specialized cells and structures. However, only euka
Please answer the attached questions on monera and protista. --- LAB 14- B 1- To what extent would filamentous cyanobacteria be considered multicellular? 2- Which of the following words or phrases describes the heterotrophic bacteria, the cyanobacteria, both or neither? a. lack of nuclear envelope b. photosynthesize si
Please answer the following questions (attached). --- LAB 4-A 1- What do you think is the function of the appendages extending from the nerve cells? 2- What three organelles (or structures) can you view in the elodea leaf cells, but not in the mammalian nerve cells? 3- Does Spirostomum have a cell wall? How do you kn
Please answer the following short questions (as brief as possible) This is for my study guide. --- 1A LAB 1- If an ocular lens has a magnifying power of 15X and the objective lens is 10X what is the total magnification? 2- Identify the part of the microscope with the following functions: a. Lens that further magnifi
If a eukaryotic cell has a diameter that is 10 times that of bacteria cell, proportionally how much more surface would the eukaryotic cell have? Proportionally how much more volume would it have? How does the nucleus control protein synthesis in the cytoplasm? How does a mitochondron and a chloroplast look like? I ne
How is programmed death of cells (apoptosis) used during embryonic development and in fighting cancer?
When a jelly fish is removed from its salt water environment and put into fresh water it swells and bursts (Why does it swell and burst?). Do you think a jelly fish is a plant or an animal? Why?
I do not quite understand what or how the density of mitochondria would be any different in tissue taken from the legs of a marathon runner or the biceps of a weight lifter vs. a couch potato. Can you explain this concept?
Name the protein-rich solution that fills the part of the plant in which food is made?
This scenario is discussed: Suppose you drop a rose bush in the ocean. The ocean is which type of solution in relation to the plant?
Give the term for the plasma membrane pulling away from the cell wall.
With a diaper experiment if we added water to the superabsorbant powder in the glass. The powder was the cell which swelled when water was added. The cell was a ______ solution.
Name the process in which a carrier protein combines with a particular substance and moves it across the membrane.
No net movement of water into or out of the cell is called ___?
The ingestion of large molecules into a cell is called?
Name the solution in which there is a greater concentration of solutes than the cell.