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Vlada [557]
3 years ago
10

What does “intron” stand for?

Biology
1 answer:
suter [353]3 years ago
7 0

Introns stands for intervening sequences within a gene.

Explanation:

Introns are the nucleotide sequences within a gene which are intervening but noncoding regions on an RNA transcript which is spliced before the RNA translation to protein

Introns do not code amino acids for protein synthesis. They break the gene sequence in the DNA strand.

The introns form a large chunk and interfere with the protein coding of exons, hence are removed by splicesomes through splicing at the splice junctions.

Improper splicing of introns lead to faulty protein formation

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Nucleic acid segments and are nucleic acids that can store biological information based on the sequence of their nucleotide mono
aleksklad [387]

Full Question (figure attached):

Nucleic acid segments and ar

DNA and RNA are nucleic acids that can store biological information based on the sequence of their nucleotide monomers. Figure 1 shows a short segment of each of the two types of nucleic acids. Which of the following best describes a structural difference between DNA and RNA?

A. DNA contains four types of nitrogenous bases, whereas RNA contains only two types of nitrogenous bases

B. The backbone of DNA contains deoxyibose, whereas the backbon e of RNA contains ribose.

C. A DNA molecule is composed of two parallel strands with the same 5'-3' directionality, whereas an RNA molecule is composed of only one strand

D. Phosphate groups provide rigidity to DNA, but RNA is flexible and contains no phosphate groups

Answer:

B. The backbone of DNA contains deoxyibose, whereas the backbon e of RNA contains ribose.

Explanation:

A. DNA contains four types of nitrogenous bases, whereas RNA contains only two types of nitrogenous bases - this is false. Both contain four types of nitrogenous bases. DNA contains cytosine, guanine, adenosine and thymine, whereas RNA contains cytosine, guanine, adenine, and uracil.

B. The backbone of DNA contains deoxyibose, whereas the backbon e of RNA contains ribose. - this is true, each nucleotide in DNA contains a deoxyribose sugar, whereas each nucleotide in RNA contains a ribose sugar

C. A DNA molecule is composed of two parallel strands with the same 5'-3' directionality, whereas an RNA molecule is composed of only one strand - this is false. DNA is composed of 2 strands, and RNA is composed of one, but the DNA strands run in an anti-parallel configuration (one runs 5'-3', the other runs 3'-5')

D. Phosphate groups provide rigidity to DNA, but RNA is flexible and contains no phosphate groups - this is false, both DNA and RNA nucleotides contain phosphate groups

6 0
2 years ago
1. Identify the process depicted in the diagram above. ​
kari74 [83]

Answer:

The process depicted in the diagram above is explained below in complete details.

Explanation:

1 asexual generation

2. cytokinesis

3. karyokinesis

4.fission

(a) Amoeba

(b) in repetitious fission many elements modifications to offspring ( plasmodium ( while in amoeba only individual sections to create two separate daughter cell

(c) asexual reproduction

ii in leishmania you can totally cut three sections and it changes to a new organism and in amoeba, it can be cut wherever.

7 0
3 years ago
Which occur most lunar or solar eclipse
Bumek [7]
Solar eclipses occur more often than lunar eclipses because in a lunar eclipse, the moon has to be perfectly aligned with both the earth and the sun.

Solar eclipses occur about 2 to 4 times per year, but the area on the ground covered by totality is only about 50 miles wide. In any given location on Earth, a total eclipse happens only once every hundred years or so, though for selected locations they can occur as little as a few years apart.

Eclipses of the Moon by the Earth's shadow occur less often than solar eclipses, however, each lunar eclipse is visible from over half the Earth. At any given location, you can have up to three lunar eclipses per year, but some years there may be none.

In any one calendar year, the maximum number of eclipses is four solar and three lunar.
7 0
3 years ago
Which phrase describes short-term environmental changes?
Zepler [3.9K]

Answer:

i willl answer this science question in the comments section

Explanation:

3 0
2 years ago
Question 14 2 pts
Elena-2011 [213]

Answer:

Double replacement :)

6 0
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