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AnnyKZ [126]
3 years ago
7

Nitric oxide was discovered as a secondary messenger in the 1980s and has grown in popularity since that time. In fact, it was n

amed molecule of the year in 1992 by Science Magazine, one of the leading global scientific publications, and the Nobel Prize in Physiology and Medicine for 1998 was awarded to the scientists who discovered its properties as a signaling molecule. Add to that the link to Viagra, one of the most profitable sexual enhancement drugs on the market, and you have a molecular superstar.
Biology
1 answer:
Allisa [31]3 years ago
8 0

Answer:

The main function of viagra is to relax the muscles of the blood vessels in some areas of the body. It is used for the treatment of erectile dysfunction and for high blood pressure. The component of viagra is a competitor to the enzyme PDE5, breaking down cGMP. In the penis, blood is trapped, which results in the erection being maintained. When cGMP levels decrease, the concentration of calcium ions increases, causing smooth muscle contraction.

Explanation:

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Which kingdom would a single celled organism with a nucleus, cell wall and chloroplast belong?
geniusboy [140]

that kingdom would belong to the primary producers also known as autotrophs (they produce their own resource) as they are single celled organism (as we are too) that have a nucleus and a cell wall that is contained of cellulose that only plants, algae, and fungi could have, it provides protection for the cell. and the chloroplast are only in photosynthetic organism which are plants (and some other creatures like some bacteria and protists) where they take light energy from the sun into usable chemical energy.

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Explain what might happen to tundra animals, such as polar bears, as earth's climate warms.
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Ok I have three questions I really need help with!!
kodGreya [7K]

Answer: wind power, As with all energy supply options, wind energy can have adverse environmental impacts, including the potential to reduce, fragment, or degrade habitat for wildlife, fish, and plants. Furthermore, spinning turbine blades can pose a threat to flying wildlife like birds and bats.

Prokaryotes are organisms that consist of a single prokaryotic cell. Eukaryotic cells are found in plants, animals, fungi, and protists. They range from 10–100 μm in diameter, and their DNA is contained within a membrane-bound nucleus. Eukaryotes are organisms containing eukaryotic cells.

A cell cycle is a series of events that takes place in a cell as it grows and divides. ... The cell then leaves interphase, undergoes mitosis, and completes its division. The resulting cells, known as daughter cells, each enter their own interphase and begin a new round of the cell cycle. mark brainliest plzz

Explanation:

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3 years ago
PLEASE HELP GIVING 25 POINTS
prisoha [69]

Answer:

Explanation:

1. a. Interphase is the phase of the cell cycle in which a typical cell spends most of its life. During interphase, the cell copies its DNA in preparation for mitosis.

b. The third phase is anaphase. This phase only takes about 0.8 percent of the cell cycle to complete, which is the shortest time required out of all the phases. During anaphase the sister chromatids, or the two identical parts of a chromosome, are pulled apart to opposite ends of the cell by the spindle fibers.

2. Mitosis is important for three main reasons: development and growth cell replacement and asexual reproduction.

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The advancements helps us grow the information and availability of resources to learn more and more about wildlife and the ecosystems as they grow. :)
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