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4 years ago

¿Cuál es una diferencia que hay entre el ciclo lítico y lisogénico??

Biology

1 answer:

MArishka [77]4 years ago

8 0

Answer:

El ciclo lítico implica la reproducción de virus utilizando una célula huésped para fabricar más virus; luego, los virus salen de la célula. El ciclo lisogénico implica la incorporación del genoma viral al genoma de la célula huésped, infectándolo desde dentro.

Explanation:

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do you think aquatic plants undergo photosynthesis? where/how do aquatic plants obtain the CO2 needed to go through the process

taurus [48]

Answer:

Yes. Aquatic plants may take in carbon dioxide from the air or water, depending on whether their leaves float or are under water. The leaves of floating plants, such as lotus and water lilies, get direct sunlight. ... They can take in carbon dioxide from the air and release oxygen into the air.

4 0

3 years ago

Birds and reptiles conduct _____ fertilization and lay the eggs outside of the body. a. internal b. external

madreJ [45]

Birds and reptiles conduct internal fertilization and lay the eggs outside of the body.

4 0

3 years ago

Read 2 more answers

A researcher wanted to study the effect of low light environments on the growth of alfalfa plants, so she grew six plants and me

Novosadov [1.4K]

Answer:

Height of the other plant is $4.5$ cm

Explanation:

- Given -

Mean of the sample set of plants $= 5.35$ cm

Mean of a given set of data is equal to the sum of integral values of each data divided by the number of such data points

$M = \frac{x}{n}$

Where M signifies the Mean values

X signifies the sum of all unit data with in a sample

and n signifies total number of data units with in a sample

On substituting the given values in above equation, we get -

$\frac{6.0+5.9+4.0+5.5+6.2+A}{6} = 5.35\\5.35 * 6= 27.6 + A\\A = 32.1-27.6\\A=4.5$

Hence, height of the other plant is $4.5$ cm

7 0

3 years ago

Starting with a protein that has been inserted into the Endoplasmic reticulum (ER) membrane with the Amino (N) terminal in the E

Vika [28.1K]

Answer and Explanation:

Ribosomes are the primary structure for protein synthesis. They can be found in the rough endoplasmic reticulum or floating in the cytosol.

Free ribosomes are not attached to any cytoplasmic structure or organelle. They synthesize proteins only for internal cell use. Other ribosomes are attached to the membrane of the endoplasmic reticulum and they are in charge of synthesizing membrane proteins or exportation proteins. Free and attached ribosomes are identical and they can alternate their location. This means that although free ribosomes are floating in the cytosol, eventually, they can get attached to the endoplasmic reticulum membrane.

Synthesis of proteins that are destined to membrane or exportation starts in the cytoplasm with the production of a molecule portion known as a signal aminoacidic sequence. This signal sequence varies between 13 and 36 amino acids, is located in the amino extreme of the synthesizing protein, and when it reaches a certain length, it meets the signal recognizing particle. This particle joins the signal sequence of the protein and leads the synthesizing protein and associated ribosome to a specific region in the Rough endoplasmic reticulum where it continues the protein building. When they reach the membrane of the endoplasmic reticulum, the signal recognizing particle links to a receptor associated with a pore. Meanwhile, the ribosome keeps synthesizing the protein, and the enlarged polypeptidic chain goes forward the reticulum lumen through the pore. While this is happening, another enzyme cuts the signal sequence, an action that requires energy from the ATP hydrolysis. When the new protein synthesis is complete, the polypeptide is released into the reticulum lumen. Here it also happens the protein folding (which is possible by the formation of disulfide bridges of proteins are formed) and the initial stages of glycosylation (the oligosaccharide addition).

Once membrane proteins are folded in the interior of the endoplasmic reticulum, they are packaged into vesicles and sent to the Golgi complex, where it occurs the final association of carbohydrates with proteins. The Golgi complex sends proteins to their different destinies. Proteins destined to a certain place are packaged all together in the same vesicle and sent to the target organelle. In the case of membrane proteins, they are packaged in vesicles and sent to the cell membrane where they get incrusted.

There are certain signal sequences in the carboxy-terminal extreme of the protein that plays an important role during the transport of membrane proteins. A signal as simple as one amino acid in the c-terminal extreme is responsible for the correct transport of the molecule through the whole traject until it reaches the membrane.

4 0

3 years ago

Explain how this genetic mutation can lead to a change in the structure and function of the protein

Ksenya-84 [330]

Answer:

A genetic mutation in DNA can lead to a change in the structure and function of the protein since this mutation passes through transcription to the mRNA —whose base sequence is altered— and in translation by the ribosomes, fewer or more or different amino acids are produced from this altered gene.

Explanation:

DNA is the nucleic acid that contains the genetic information of a living organism. When this molecule is affected by a mutation, the end result can be an alteration in the protein structure as well as in the protein function.

The molecular mutation consists of the change in the amount or sequence of bases that form the DNA. This alteration passes through mRNA transcription, with alteration in its normal nucleotide sequence. Since mRNA forms the codons that encode for amino acids, translation in the ribosomes produces

a protein that:

Can be longer, if the mutation is by insertion or duplication.
It can be shorter, if the mutation includes a deletion or encodes the early arrest of porein synthesis.
Alteration of the amino acid sequence, when it is a frame mutation.
Changes of an amino acid promoted by a subtitution of nitrogenous bases.

In any case, a mutation causes the RNA information to be altered, which can affect the protein structure, the protein function or both.

3 0

3 years ago