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Cell Structure

Physical and metabolic contraints

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?

The integrity of the plasma membrane is essential for cellular survival...

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

Osmosis, diffussion and cell membrane

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?

Pathways Respiration is the featured topic.

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.

4 Biology Problems

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

Monera and protista

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

It would be helpful if you have done cellular labs

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

Must know all different types of microscopes

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

Eukaryotic Cell and Organelles

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

Genetics

How is programmed death of cells (apoptosis) used during embryonic development and in fighting cancer?

Discussing Osmotic Changes

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?

Hypertonic Environment

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?

Plasma membrane

Give the term for the plasma membrane pulling away from the cell wall.

Hypotonic Solution

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.

Carrier Protein

Name the process in which a carrier protein combines with a particular substance and moves it across the membrane.

Golgi Apparatus

Name the part of the cell that modifies protein and packages them before secretion or transport.

Mitochondria

Name the part of the cell that has its own nuclieic acids and is involved in self reproduction.

Biological Membranes

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.

GAP JUNCTIONS for Multicellular Organisms

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