BIOLOGY HIGH SCHOOL

Which type of RNA carries a genetic code from DNA to the ribosome?A) mRNA
B) qRNA
C) rRNA
D) tRNA

Answers

Answer 1
Answer:

Answer:

(A). mRNA.

Explanation:

During protein synthesis, information present in DNA as triplet codons gets transferred to mRNA molecule, by the process of transcription. The mRNA than gets transported to the cytosol, where it associates with ribosomes.

Ribosomes are known as protein factories of the cells as they provide platform for translation. During translation, information present in mRNA is used to translate polypeptide chain or protein as each codon codes for a specific amino acid.

Thus, the correct answer is option (A).

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What can be said about prokaryotes and eukaroytes?a. Prokaryotes always have a nucleus, but eukaryotes don't. b. Both of these cell types contain a nucleus. c. Eukaryotes always have a cell membrane, but prokaryotes don't. d. Both of these cell types contain genetic material.
Which of these statements best defines the term Middle Ages?A. The period before the growth of the Catholic Church around the world. B. The period of interaction beween the Islamic and Mongol empires. C. The period between the Greek and the Roman dominance over European culture. D. The period following the decline of the Roman Empire in Europe.
The sporophyte of an unknown plant species grows as a separate plant than the gametophyte. The plant produces both female and flagellated male gametes from the same gametophyte, and it releases spores into the environment. Which of the following is the best conclusion about the life cycle of this plant? (2 points)The plant is a gymnosperm, and the gametophyte is its dominant phase. The plant is an angiosperm, and the gametophyte is its dominant phase. The plant is a moss, and the sporophyte is its dominant phase. The plant is a fern, and sporophyte is its dominant phase.
what have scientist learned about the classification of amphibians, birds, and reptiles by studying their evolutionary relationships?
Which of the following statements is true? Acquired mutations are passed down from parent to offspring. Mutations are the most fundamental way to add new genes to a gene pool. Hereditary mutations are caused by external factors, such as radiation. Only somatic mutations are important to evolution because they can be inherited.

Why does incomplete dominance not support the blending theory of inheritance?

Answers

Incomplete dominance can happen in flowers such as snap dragons where a red flower plant and a white flower plant have an offspring that is neither red nor white but is a mix so in this case it would be pink. It does not support the blending theory as it does not get its colour from the dominant plant in this case but from both.

What will happen if we put a Rhoeo leaf in plain water?

Answers

If we put a Rhoeo leaf in plain water, the water concentration of the leaf cells will be higher than that of the plain water. The aim is to balance water concentration on the inside and outside of the organism. So, the water will exit the leaf cells, which will consequently shrink in size. The most of the cells will shrink in size, causing the leaf to shrink, too.
when we put a rheo leaf in plain water,due to high salt concentraion within the leaf and less salt concentration in the water outside,the salts will flow outwards into the water there by shrinking the leaf and giving it a spherical shape.

How is the hydrologic cycle purified

Answers

During the process of when liquid becomes vapor which is evaporation.

Why is the enzyme pectinase added during the manufacture of fruit juices?. . A.The enzyme pectinase speeds up the breakdown of pectin in fruits, producing more juice.. . B.The enzyme pectinase enhances the taste of fruit juices, making them more popular.. . C.The enzyme pectinase speeds up the breakdown of toxins in fruits, producing more juice.

Answers

Answer;

The enzyme pectinase speeds up the breakdown of pectin in fruits, producing more juice.


Explanation;

-Enzyme pectinase speeds up the break down of pectin in plant walls, thus creating more juice.

-Pectinase is an enzyme that catalyzes the breakdown of pectin, a component of the cell wall in fruits such as apples and oranges.

-It is used for multiple purposes during the manufacturing process of our favorite juices.

-It clarifies naturally cloudy juices, improve the aroma, extracts more colors, and is often used in the preparation of berries, tropical fruits, and apples & pears.
the reason why the enzyme pectinase is added during the manufacture of fruit juices is : A. The enzyme pectinase speeds up the breakdown of pectin in fruits, producing more juices

With this, the manufacturer company will get more volume of product from same amount of resource

hope this helps

What steps should you take when the results of an experiment do NOT support your hypothesis?a: Consider the experiment a failure.

b: Assume you made a mistake, and the results mean nothing.

c: Publish the results of your experiment claiming the experiment proved the converse of your hypothesis.

d: Learn from results, use the new knowledge to improve your view of the situation, and possibly develop a new hypothesis.

Answers

D: Learn from results, and develop a new hytpothesis

Microbiologists use the gram stain to aid in the identification of bacteria. What is the major difference between gram-positive and gram-negative bacteria?

Answers

The major difference between Gram-positive and Gram-negative bacteria is the presence or absence of an OUTER PLASMA MEMBRANE.

Gram-positive bacteria do not contain an outer plasma membrane, whereas Gram-negative bacteria have a lipid-rich outer plasma membrane.

This outer plasma membrane contains lipopolysaccharide (LPS) in addition to phospholipids and proteins.

Moreover, Gram-positive bacteria are also surrounded by thick layers of peptidoglycan.

In conclusion, the major difference between Gram-positive and Gram-negative bacteria is the presence or absence of an OUTER PLASMA MEMBRANE.

Learn more in:

brainly.com/question/1004498?referrer=searchResults

Answer:

Microbiologists use the gram stain technique to identify the gram-positive and gram-negative bacteria on the basis of the composition of their cell wall.

The major difference between the cell wall of gram-positive bacteria and gram-negative bacteria is that in gram-positive bacteria peptidoglycan is the major component which makes gram-positive cell wall whereas in gram-negative bacteria their cell wall has a thick outer layer of Lippo polysaccharide and a thin inner layer of peptidoglycan.

So in gram stain gram-positive cell wall retains the crystal violet because of the thick peptidoglycan layer and appears violet and gram-negative appears pink as it lacks the outer thick peptidoglycan layer.
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