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Cell Structure

Nuclear transplantation

Several species of mammals have been cloned by nuclear transplantation using an adult cell as the source of the nucleus. Is there any contribution to the genotype of the cloned offspring from the oocyte into which the nucleus is tranplanted? Briefly explain. Name a technique that can be used to simulataneously detect the tran

ER retrieval signal...

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?

G protein

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?

Name the structure...

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).

Free energy vs activation energy is contrasted.

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?

The Building Blocks of Biology

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

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?

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.

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


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?

Plasma membrane

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.

Carrier protein

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


Name a solution that has a lower number of solutes than the cell.


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


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