Which is a compound?
water
iodine
air
calcium

Answers

Answer 1
Answer:

Among these, it is water which is a compound.

A compound is a substance which is made up of two or more different elements. Apart from this, the different elements in a compound are bound by a chemical bond in a fixed proportion.Water is a compound which is made up of two different elements which are hydrogen and oxygen. The chemical formula of water is H2O. Also, the proportion of hydrogen to oxygen in water is definite which is 2:1. Among other options, iodine and calcium are elements. As far as air is concerned, it is a mixture of various gases not a compound. So, correct option is water.

Answer 2
Answer: a compound is a combination of elements therefore it is water.
iodine and calcium are just elements and air is a mixture of several compounds

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which glomerular lesion is characterized by thickening of the flomerular capillary wall with immune deposition

Answers

The glomerular lesion that is characterized by thickening of the glomerular capillary wall with immune deposition is called membranous glomerulonephritis.

In this condition, there is a buildup of immune complexes, which are composed of antibodies and antigens, in the glomerular capillary walls. This immune deposition leads to inflammation and thickening of the walls, impairing the filtration function of the kidneys.

The thickening of the glomerular capillary wall in membranous glomerulonephritis is caused by the accumulation of immune complexes in the subepithelial space. These immune complexes can be formed due to various underlying causes, such as autoimmune diseases, infections, medications, or certain cancers. The immune complexes trigger an inflammatory response, attracting immune cells to the glomerular capillary walls and causing damage.

As a result of the thickening of the glomerular capillary wall, the normal filtration process in the kidneys is disrupted. This can lead to proteinuria (presence of excess protein in the urine), hypoalbuminemia (low levels of albumin in the blood), and edema (swelling) in the affected individual. Over time, the chronic inflammation and scarring can further impair kidney function and may progress to chronic kidney disease.
To diagnose membranous glomerulonephritis, a kidney biopsy is typically performed to examine the glomeruli under a microscope. The presence of thickened glomerular capillary walls with immune deposits confirms the diagnosis.



Treatment for membranous glomerulonephritis aims to reduce inflammation, control symptoms, and preserve kidney function. Depending on the underlying cause and severity of the condition, treatment options may include medications such as immunosuppressants, angiotensin-converting enzyme inhibitors (ACE inhibitors), or angiotensin receptor blockers (ARBs). In some cases, individuals may require supportive measures such as dietary modifications and fluid restriction.
In summary, membranous glomerulonephritis is a glomerular lesion characterized by thickening of the glomerular capillary wall due to immune deposition. It can result in kidney dysfunction and is typically diagnosed through a kidney biopsy. Treatment options focus on reducing inflammation and preserving kidney function.

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Membranous, the thickening of the glomerular capillary wall characterizes only membranous lesions

Vertebrates are part of what phylum

Answers

Mammalia - mammals 

Aves - birds 

Amphibia - amphibians 

Reptilia - reptiles 

Chondrichthyes - sharks, stingrays

In the following tetrahybrid cross AaBbCcDd x AaBbCcDd what proportion of the F2 offspring would be expected to be genotypically AABBCCdd?A. 3/4
B. 1/2
C. 1/256
D. 81/256
E. 9/256

Answers

Answer:

C. 1/256

Explanation:

In the tetrahybrid cross, we have different four groups. Let name them Part (A, B, C &  D).

Let Part A be Aa and Aa... If both traits crosses; we have

         A          a

A       AA        Aa

a        Aa        aa

Hence, there is a total of 4 combinations

Let Part B be Bb and Bb... If both traits crosses; we have

         B          b

B       BB        Bb

b       Bb         bb

Hence, there is a total of 4 combinations

Let C be Cc and Cc ... If both traits crossses; we have

         C           c

C       CC        Cc

c        Cc        cc

Hence, there is a total of 4 combinations

Let D be Dd and Dd... If both traits crosses; we have

         D          d

D       DD       Dd

d        Dd       dd

Hence, there is a total of 4 combinations

A genotype has the 4 groups together. Therefore the possible number of ways of forming the genotype = 4 x 4 x 4 x 4= 256

Now, Probability that the F2 offspring would be expected to be genotypically AABBCCdd = (number of genotype AABBCCdd)/(Total number of genotype in the offsprings)

= (1)/(256)

No matter what the cell type, prokaryotic or eukaryotic, plant or animal, the ____________ forms a protective barrier between the exterior environment and the interior of the cell.a. cell wall
b. cytoskeleton
c. cell membrane
d. glycoproteins

Answers

c. cell membrane forms a protective barrier between the exterior environment and the interior of the cell.

Cell membranes contain membrane proteins that allows all the interaction that occurs within the cell. It makes the cell membrane selectively permeable because of its characteristics as being fluid or its fluidity which means to say that they can move freely within the lipid bilayer. The membrane proteins can also be stored in the lipid bilayer together with the enzymes. It cannot be denied that membrane proteins have a lot of functions based on its type. They can be integral proteins, peripheral proteins and lipid bound proteins.



The most common example of shared characteristics among different types of cells is the cell membrane. Every cell is enclosed by a cell membrane which protects the cell from its surroundings by separating the interior components from the exterior ones.

Further Explanation:

A cell membrane is permeable to selective molecules which means only particular substances can traverse the membrane. The essential molecules are allowed to enter whereas the toxic or non-essential molecules are excreted out of the cell through the cell membrane.

The phospholipids are arranged in a bilayer to form a cell membrane. It also contains the cholesterol present in between phospholipids and maintains the fluidity at different temperatures. The membrane also contains integral and peripheral proteins that help in the transport of materials and maintain the structure and shape of the cell respectively. Glycoproteins are also attached covalently to the membrane and help in cell-cell recognition, cell adhesion, and also serve as receptors for other molecules.

Apart from the cell membrane, certain cells also contain cell walls which surround the cell membrane. It is present in plants, bacteria, and fungi and prevents the over-expansion of the cell. In plants, the cell wall helps in providing turgidity to the cell and also maintains the shape and structure of the cell whereas, humans are devoid of cell walls instead they contain cell membranes.

A cytoskeleton is not a protective barrier for the cell but provides rigidity to the cell and is present in the cytoplasm of the cell. Its main function to provide rigidity to the cell and resistance against deformation by associating with other proteins and connective tissues. It also helps in the transport of material within the cytoplasm and also helps in cell signaling.

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Answer Details:

Grade: High School

Subject: Biology

Chapter: The Cell Membrane

Keywords:

Cell membrane, cytoplasm, cytoskeleton, cell wall, glycoproteins, phospholipid bilayer, cholesterol, glycoproteins, integral proteins, peripheral proteins, cell recognition, cell adhesion, cell signaling.

 

What is a zygote HELP PLSSS

Answers

Answer:

A zygote is a eukaryotic cell formed by a fertilization event between two gametes. The zygote's genome is a combination of the DNA in each gamete, and contains all of the genetic information necessary to form a new individual organism.

Explanation:

what i said

Which of the following terms is the accumulation of persistent toxins in our body? carcinogen body burden a biotic factor persistent organic pollutants (pops)?

Answers

I think the correct answer from the choices listed above is the second option. The term that would refer to the accumulation of persistent toxins in our body would be body burden. It can be the result of long-term or short-term storage of toxins. Hope this answers the question.