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?
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?
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?
Give the term for the plasma membrane pulling away from the cell wall.
I need a clear and detailed explanation on biological membrane characteristics such as biochemical properties (eg. composition, alignment, special features, etc.), biological transport routes and mechanisms of transport, and the properties of integral and peripheral proteins.
Why can only eukaryotic cells evolve into multicellular organisms? Why can't prokaryotic bacterial cells develop into multicellular organisms as well?
As multicellular organisms decelop from embryo to adults, gap junctions are made and broken in specific patterns, involving specific tissues. This suggests that these junctions play an important role in signalling between cells during embryonic development. A) With the understanding of Gap junctions, speculate on what sorts
What are the equations for the breakdown of glucose to i.CO2 and water ii.lactic acid iii.alcohol
Consider the signalling pathway that proceeds through three protein kinases that are sequentially activated by phosphorylation. IN one case the kinases are held in a signalling complex by a scaffolding protein; in the other, the kinases are freely diffusing (see figure attached). Discuss the properties of these two types of orga
Whats the difference between transport vesicles, secretory vesicles, and endocytotic vesicles? I know that Transport vesicles move molecules between locations inside the cell. For example they move proteins from the ER to the Golgi, from there to the outer membrane, where they are secreted
You prepare radioactivley labelled ribosomal subunits and you microinject them into cells that you are culturing in the laboratory. At different times after you inject the subunits, you take a small amount of cells and analyze them by electron microscopy. You find very soon after injection, the labelled subunits are assembled in
The integrity of the plasma membrane is essential for cellular survival. a. Could the immune system utilize this fact to destroy foreign cells that have invaded the body? b. How might cells of the immune system disrupt membranes of foreign cells?
Choose the component of the cell that you think is most essential to the cell as a whole. Describe why you feel this way. Defend your choice.
You have been given a picture of a cell; the magnification of the picture is 8000 X. The cell in this picture is 2 cm in length. Based on the information provided, what is the actual size of the cell? Show all relevant calculations. (Express answer in micrometers) Ideas are then presented.
Consider the role of the coenzyme NAD in glucose oxidation. In the process of glycolysis the formation of pyruvate involves the reduction of the coenzyme NAD to NAD.2H. (a) Which other stages of glucose oxidation produce molecules of the reduced coenzyme, NAD.2H? (b) Explain what happens to NAD.2H produced during glycoly
Both types of EM use some sort of metal coating, therefore how do you explain that one type (transmission) produces a two dimensional image and the other type (scanning) produces a three dimensional image?
1. What are the phases of the Cell Cycle? Describe each phase in some detail.
What is the endoplasmic reticulum? What is the function of this organelle?
Please discuss the differences between the Nucleus and Nucleolus in the cell?
1. Which of the following organelles is most important in providing energy to the cell? (a) mitochondrion (b) centrosome (c) Nucleus (d) Peroxisome 2. Name the membrane valves that open and close for potassium efflux and sodium influx. (a)ion channels (b)Vacuoles (c)Capillaries 3. What technique can be used to measu