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Masteriza [31]
3 years ago
7

Which structure is directly involved in gas exchange?

Biology
2 answers:
Paladinen [302]3 years ago
6 0

Answer:

alveoli

Explanation:

Marysya12 [62]3 years ago
4 0
I would say the alveoli. They are tiny air pockets in the lungs: this is where the diffusion of oxygen and carbon dioxide occurs.

Hope this helps! x
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The Peruvian Rosewood (Micrandra spruceana) plants are rare and not ideal for cultivation. If we can identify the enzymes that p
mafiozo [28]

Answer:

Gene.

Explanation:

Gene which is responsible for the production of spruceanol in the Peruvian Rosewood plant can be inserted in the host species in order to produce spruceanol  in large quantity so that we can used it as a drug that can cure antimalarial disease. There are certain genes that are responsible for the production of spruceanol in the Peruvian Rosewood plant so if we want to produce this spruceanol in other plants we have to transfer this gene to the host plant.

8 0
3 years ago
Arteries carry oxygenated blood away from the heart and typically have ________________ blood pressure. Veins carry deoxygenated
KatRina [158]
The correct answer is high, low.

Arteries are part of the circulatory system and are responsible for carrying blood away from the heart and around the body. The arterial blood is oxygenated and this process ensures that every tissue around the body will receive oxygen and nutrients through this blood flow.

Veins are also part of the circulatory system and are responsible for carrying the deoxygenated blood from the tissues back to the heart.

Venous pressure is much lower than the arterial pressure. More specifically, venous pressure ranges from 5 to 8 mmHg, while arterial pressure ranges from 15 to 30 mmHg.
4 0
3 years ago
What phase is Homologous chromosome paired.
kumpel [21]

In metaphase I of meiosis I, the pairs of homologous chromosomes, also known as bivalents or tetrads, line up in a random order along the metaphase plate. The random orientation is another way for cells to introduce genetic variation.

4 0
3 years ago
Which is not considered one of the four major oceans?
murzikaleks [220]

Answer is B. Antarctic

71 % of the Earth is cover with water. The large water body is divided and have specific names. There are four distinct oceans. These are Pacific, Indian Atlantic and Arctic oceans. Among these Pacific, Atlantic and Indian are the major oceans. The United States along with most countries now recognize the Southern (Antarctic) as the fifth ocean.

7 0
3 years ago
Read 2 more answers
48.
satela [25.4K]

Answer:

Ribose

Explanation:

DNA is a large molecule, a type of nucleic acid which store and act as a genetic material of the cell. DNA molecule is formed by the repeating monomer units called nucleotides.

Each nucleotide is made up of three subunits as:

1. 5-C sugar: De-oxyribose formed by the removal of oxygen group from 2' OH group of ribose. Ribose is the sugar molecule present in RNA nucleic acid.

2. Phosphate group (PO₄³⁻)

3. Nitrogenous bases: adenine, guanine, adenine and cytosine.

Thus, ribose is the correct answer.

5 0
3 years ago
Read 2 more answers
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