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telo118 [61]
3 years ago
10

State the unique characteristics of epithelial tissue.​

Biology
1 answer:
erica [24]3 years ago
7 0

Answer:  

Characteristics of epithelium tissue

1.Polarity- Epithelium is arranged so there is one free surface (apical surface) and one attached surface (basal surface)

2.Cellular nature– Cells in epithelium fit closely together side by side and sometimes atop each other to form sheets of cells. These sheets are held together by specialized junctions.

3.Supported by connective tissue– Attachment to a layer of connective tissue at the basal surface forms a layer called the basement membrane, an adhesive layer formed by secretions from the epithelial cells and the connective tissue cells.

4.Avascular– Epithelium typically lacks its own blood supply.

5.Regeneration– Epithelium cells can regenerate if proper nourished.

6.Absence of nerves (except for a few axons in the deeper layers)

Classification scheme of epithelial tissue:

Typically epithelial tissue is classified on the basis of arrangement and shape of cells. For naming the tissue types, the arrangement of the cells is stated first, then the shape, and is followed by “epithelium” to complete the naming. For example; Simple Squamous Epithelium.

Explanation:

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Very low concentrations of detergent make membranes leaky to small molecules and ions without damaging proteins. In isolated mit
Grace [21]

Options

A. Yes, because all enzymes and electron carriers are functional

B. No, because with a leaky membrane, the proton gradient cannot be maintained

C. No, because leaky membranes inhibit glycolysis

D. No, because leaky membranes do not allow NADH and FADH2 to donate their electrons to the electron transport chain

Answer:

B. No, because with a leaky membrane, the proton gradient cannot be maintained

Explanation:

The proton motive force (PMF) provides the needed pump  to generate electrochemical gradients of proton needed for continue influx  into the matix of the mitochondria. The proton Influx generates the energy needed by  protein ATPase Synthase for  synthesis  of ATPs by adding inorganic phosphate to ADP to give ATP.

               ADP + Pi -----------→ ATP.

If the mitochondria;l  intramembrane leaks, then the PMF can  not be sustained, therefore electtrochermical gradient which supplies the energy for ATP synthase for ATP synthesis will not be available. Therefore ATP synthesis stops.

5 0
3 years ago
Consider two old-growth forests: one is undisturbed while the other is being logged. In which region are species likely to exper
Semenov [28]
I believe that it is the old growth not sure which one but between B and D I would go with B but I am not sure (hope I helped in some way )
6 0
3 years ago
where in a stem cell of an embryo is the instructions for how to build organs?  a. ribosomes  b. endoplasmic reticulum  c. Go
Anna35 [415]

Answer:

. In the nucleus.

Explanation:

The information for all bodily functions resides in DNA in every cell.

5 0
3 years ago
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Contact with infected cats and their feces is the only mode of transmission of Toxoplasma to humans. Contact with infected cats
Mkey [24]

Answer:

False

Explanation:

Toxoplasma is a congenital disease that is characterized by mild muscle aches, tender lymph nodes, etc. and in some immuno-compromised individuals, seizures and coordination loss may occur. I

The disease is caused by a protozoan known as <em>Toxoplasma gondii </em>and its infection is usually by eating foods (usually meats) that contain the cyst of the organism or making contact with cats that are infected in addition to infected mother-baby transmission, especially during pregnancy.

<em>Hence, humans can contract the organism not just by exposure to an infected cat but also by eating meats that contain the cysts of the organism.</em>

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3 years ago
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Which items are sources of soil pollution or soil pollutants?
Wewaii [24]
Which items are sources of soil pollution
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