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3 years ago

Function of the plant cell wall?

1 answer:

7 0

The function of a cell wall has the same function of the cell membrane; it protects the cell. Cell wall is made up of cellulose that is only present in plant cells. Cellulose is a sugar that has a sheet like structural carbohydrate. It is rigid that is used for support and provides protection to the plant cell from damage. They cannot be dissolved in water. An example is if you eat food that contains mostly of leaves. You will observe that you will eliminate the same material as when you it. That is because our human body does not have the enzyme that dissolves the cellulose.

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Explain how replacing asphalt with gravel or other permeable material can improve water quality.

Ira Lisetskai [31]

When coming to building something, some materials are more vulnerable to water and can wear away easier. Some can keep the water in, so depending on the material, the water quality can be better sustained.

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3 years ago

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What could you look for to determine if a cell is prokaryotic or eukaryotic?

Misha Larkins [42]

A eukaryotic cell has far more organelles and most prominently, has a nucleus. A prokaryotic cell stores it's DNA in it's cytoplasm.

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3 years ago

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Small body (nb), short spines (Is) and amoral are three recessive traits in stick the genes of which are linked on the same chro

melomori [17]

Answer:

The three genes in coupling are in repulsion.

Explanation:

Coupling happens when the dominant alleles and the recessive alleles are on the same homologous chromosome, while the repulsion happens when one chromosome has one dominant allele and one recessive allele and another homologous chromosome also has dominant and recessive alleles.

If the progeny has:

nb+ ls+ a/nb ls a ⇒ nb+ ls+ a

nb ls a+/nb ls a ⇒ nb ls a+

Where nb+ ls+ a is the dominant alleles and nb and nb+ is in middle.

ls+ nb+ are on the same chromosome (both dominant)

ls nb are on the same chromosome (both recessive)

ls nb, these two are in coupling with each other, but ls+ and a are on the chromosome and ls+ or nb+ are dominant, while nb+ and a are recessive on form a, thus, ls and nb, they are in repulsion with a.

3 0

3 years ago

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One way to think about the importance of biodiversity is simply to think in terms of natural capital: the roles that genes, spec

Arte-miy333 [17]

Answer and Explanation:

Biodiversity composes of different species living in a certain restricted area. It is the variability of living beings in a natural environment, involving all the species on the planet and their genetic material. This variety includes all plants, animals, fungus, and microorganisms living in a certain place, their genetic variability, and the ecosystems these species form.

Ecosystems include all the biotic, physical, and chemical components of nature, continuously interacting and depending on each other. The ecosystem is composed of living and non-living things that interact and depend on each other. These are the biotic and abiotic factors.

Biodiversity, in equilibrium with abiotic factors, provides ecosystem services, which are important for the maintenance of all forms of life, including human beings.

Ecosystem services

When talking about ecosystem services, we are referring to the benefits that ecosystems provide us. There are four types of ecosystem services:

Provision or supply:

These are the products obtained by nature to be used or consumed, directly or with previous processing. Among them, we might mention food, clear freshwater, fertile soils, geotic materials, raw materials (that can be used for clothing, construction), renewable fuels, biochemical compounds, pharmacological/medicinal resources, among others.

Regulation:

Refers to ecological processes that improve life. Among others, we might mention climate regulation, CO² absorption, water purification, air purification, erosion control, natural disaster avoidance such as flooding, soil fertility maintenance, waste recycling, pests/plagues control, etc.

Cultural:

Refers to not the material benefits. Ecosystems provide a recreational place or area to spend time and learn. They provide a spiritual/religious space, are a source of inspiration. Ecosystems are cultural patrimony and the source of scientific knowledge.

8 0

3 years ago

explain why most populations do not grow exponentially and why they tend to level off at carrying capacity

LenaWriter [7]

Most populations don’t grow exponentially since there is regulations considering CBR & CDR, as well as NIR in the whole population. There are push factors as well a limited growth.

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3 years ago