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WITCHER [35]
4 years ago
7

For a science fair project, two students decided to repeat the Hershey and Chase experiment, with modifications. They decided to

label the nitrogen of the DNA, rather than the phosphate. They reasoned that each nucleotide has only one phosphate and two to five nitrogens. Thus, labeling the nitrogens would provide a stronger signal than labeling the phosphates. Why won't this experiment work?
Biology
1 answer:
gtnhenbr [62]4 years ago
7 0

Answer:

The experiment wont work because both DNA and Protein contain nitrogen in their structure.

Explanation:

DNA and protein both contain nitrogen but phosphate group is present in DNA but absent in Protein.So when those 2 students tried to lebel the nitrogen of DNA it can be possible that nitrogen of protein molecule is being lebelled rather than the nitrogen of DNA.

          As a result those 2 students do not found any trace of  nitrogen of  phage DNA inside the host Bacterium because the lebelled protein of the capsid remains outside the bacterium in form of ghost.

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Bryophytes are also called ____ plants
zaharov [31]
Bryophytes are also called NON VASCULAR plants.
Bryophytes are a group of small and green plants, which are made up majorly of hornsworth, liverwort and mosses. They can be found on land or in aquatic environment. These plants do not produce flowers, therefore they are always described as seedless.
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3 years ago
Where can we observe evidence of organisms changing in response to their environment?
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Answer: this question is confusing hope you do well

Explanation:

8 0
3 years ago
Using what you know about the
Soloha48 [4]

The term mosaic is used in arts for an art piece that is composed of many small pieces of materials like stones or glasses. However, in biology it is used for a structure that is made up of different types of cells.

Now if we have to describe a biological mosaic structure , then there is no perfect option than the structure of a cell membrane of animals' cells. Cell membrane is not made up of two types of cell at all but it is a structure that is composed of a lipid bilayer in which proteins are floating as you can see in picture.

The structure was explained as mosaic by fluid mosaic model. If we take a deep look, the double layer of lipids are made up of phospho lipids, which contain two fatty acid tails and a lipid head.  The heads are hydrophilic and are outside while tails are hydrophobic and they are inside. This structure has alot of importance as per the function of cell membrane because it  maintains the cell's internal environment and separates it from outer environment. This is because

As cell is surrounded by an environment which contain water in excessive amount, therefore nature has made cell membrane in a way that hydrophobic tails do not face water and stay inside the double membrance while hydrophillic heads face the water region outside the cell as well as inside the cell (cytoplasm that contains alot of water content too).

Hope it helps!

7 0
4 years ago
In flowering plants, plasmodesmata are narrow channels through cell walls that connect the cytoplasms of adjacent cells. An expl
Naddika [18.5K]

Answer:

Option-D

Explanation:

Plasmodesmata are the plasma membrane lined pores present in the cells of the plants. Inside these pores runs a closed tubelike structure which is an extension of the endoplasmic reticulum.

The plasmodesmata allows cell to cell communication which involves symplast mode of transport that is through its cytoplasm.

The small water soluble molecules like amino acid and sugars can easily pass through these plasmodesmata via diffusion. The large molecules can be transported through these plamodesmata through selective diffusion.

Thus, Option-D is the correct answer.

7 0
4 years ago
Where do you find the cells that act to remodel or maintain bone?
RUDIKE [14]

Answer:

The cells (Osteoclasts) are found i believe around the bone to protect it from breaking or if it already is broken those cells help remodel or fix it back in place

Hope this helps

Explanation:

4 0
3 years ago
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