Both plants and animals have these organelles to store and pass on genetic information

Biology

1 answer:

4vir4ik [10]3 years ago

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During the early 19th century, it became widely accepted that all living organisms are composed of cells arising only from the growth and division of other cells. The improvement of the microscope then led to an era during which many biologists made intensive observations of the microscopic structure of cells. By 1885 a substantial amount of indirect evidence indicated that chromosomes—dark-staining threads in the cell nucleus—carried the information for cell heredity. It was later shown that chromosomes are about half DNA and half protein by weight.

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3 years ago

Write two sources of each of Nitrogen Phosphorus and potassium required for the growth of plant

tia_tia [17]

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Do Nitrogen, Phosphorus, and Potassium Fertilizers Do for Plants? Nitrogen in Fertilizer. In simple terms, nitrogen promotes plant growth. It is associated with leafy, vegetative growth. Phosphorus in Fertilizer. Phosphorus is involved in the metabolic processes responsible for transferring Each of these fundamental nutrients plays a key role in plant nutrition. Nitrogen is considered to be the most important nutrient, and plants absorb more nitrogen than any other element. Nitrogen is essential to in making sure plants are healthy as they develop and nutritious to eat after they’re harvested. Soil is a major source of nutrients needed by plants for growth. The three main nutrients are nitrogen (N), phosphorus (P) and potassium (K). Together they make up the trio known as NPK. Other important nutrients are calcium, magnesium and sulfur.

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3 years ago

2.4.4 discuss investigate how pollutants affect plants environmental science sem 2 this worksheet will help you orgainize your t

zhenek [66]

Answer:

Since the nature of pollutants is not mentioned in the question, several speculations can be made here.

Pollutants can affect the photosynthesis: Some pollutants are toxic to plant metabolic reactions such as photosynthesis. This is because of their oxidative nature that can damage the photosystems. This ultimately impairs the plant functioning, e.g. ozone in the air.
Pollutants can affect the plant-associated microbial communities: Some pollutants such as antibiotics can target plant-associated bacterial communities that are required for plant health. Just like the human gut, plants also have beneficial bacteria that live inside the plant tissues. These bacteria are called endophytes. The harmful nature of the compounds can affect those bacteria which decreases plant fitness.
Pollutants can compete with nutrients that act as limiting factors: Some pollutants are hydrophobic in nature and make the beneficial nutrients less available to the plants. Likewise, some pollutants reduce the bioavailability of plant necessary nutrients directly. This results in reduced growth and development in plants.
Pollutants can cause physical damages to plant tissues: Some pollutants are highly reactive in nature and can cause physical damages to the plants. This will result in the attack of pathogens at the wound site which can later take control of host metabolic machinery at later stages. Resultantly, plant fitness is decreased and in some cases, it dies off completely.

It is important to consider that some pollutants are taken up easily by plants whereas other pollutants are difficult. This is because of their water solubility criteria. If a pollutant can be taken up by plant directly, it can cause more damages to the plant as compared to the pollutant which interacts from outside.

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There are____ of proteins and only 20

creativ13 [48]

Answer:

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