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notka56 [123]
3 years ago
5

Component

Biology
1 answer:
miskamm [114]3 years ago
3 0

Aphids get resistant to pesticides often.

<h3><u>Explanation</u>:</h3>

Aphids are the small bugs that are found in plants and are generally green to red in colour. Aphids are often found to be resistant to the common organophosphates or anticholinesterase pesticides that are commonly used. They do this by means of one of the three processes.

The normal genotype which has no resistance mechanism did respond to the insecticide by up-regulating 183 genes. These genes were mostly related to energy metabolism, detoxifying enzymes, proteins of extra cellular transport, peptidases and cuticular proteins.

The second mechanism of the is seen in second genotype which is resistant through a kdr sodium channel mutation. They up-regulated 17 genes which are coding for detoxifying enzymes, peptidase and cuticular proteins.

The third mechanism is seen in those groups which are multiply resistant genotype that carrying kdr and a modified acetylcholinesterase. They are found to up-regulated only 7 genes and appeard not to require induced insecticide detoxification. Instead they down-regulated many genes.

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HELP ASAP!!!! All life on earth has descended from a common ancestor this theory was accepted when
kap26 [50]

Answer:

A. A majority of scientists agreed with it

Explanation:

The famous theory called the theory of common descent, states that all the living organisms of the earth have arisen from a common ancestor. This notion was first proposed by a French mathematician,Louis Maupertuis duirng 1740s who was of the view that all organisms had a single ancestor and evolutionary process with the passage of time resulted in the specie diversification.

After that, in 1790s another philosopher Immanuel Kant, suggested that all organisms seem to have a common ancestor. In the same period of 1790s, another scientist , Erasmus Darwin who was the grandfather of Charles Darwin also suggested that all the organisms might have a single ancestor who went through the process of evolution to bring all the majesty into life.

Charles Darwin was the first scientist who worked on this notion for alot of time and proposed the theory of common descent,in his book, On the Origin of Species.

After it, many scientists got agree with this theory such as,  Vernon Kellogg in 1907 and T. Ryan Gregory in 2008 and many others explain that no reliable observations exists which contradicts the theory of common descent.

Therefore, option A is the best option.

Hope it helps!

4 0
4 years ago
This is the chemical equation for photosynthesis: 6CO2 + 6H2O → C6H12O6 + 6O2 True False
Sindrei [870]

Answer:

False

Explanation:

The equation is 6CO2 + 6H2O → C6H12O6 + 6O2.

Hope this helps!

8 0
3 years ago
What led to food shortages in the Philippines
Sloan [31]

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The challenge often does not come from the quality of terrain, as seen in Djibouti. The Philippines is full of fertile lands ready to be cultivated for agriculture. It is the inconsistency of supply due to external disruptions from both controllable and uncontrollable factors that pose a challenge to food availability in the country.

The Philippines’ location in the middle of the Pacific makes the country susceptible to typhoons and droughts, some with devastating effects. Last year, a dry spell caused by the El Nino phenomenon destroyed 349,630 metric tons of crops, worth about On the other hand, the string of typhoons that ravaged the country at the end of the year notably slowed down the national agricultural growth rate

7 0
3 years ago
Athletes are often concerned with the question of how much protein they need in their diets because of the requirement of growin
sattari [20]
The basic building block of a protein is called an amino acid. There are 20amino acids in the proteins you eat and in the proteins within your body, and they link together to form large protein molecules.
4 0
4 years ago
List and explain the characteristics of life.​
patriot [66]

Answer:

Properties of Life. All living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, growth and development, regulation, homeostasis, and energy processing. When viewed together, these characteristics serve to define life.

Explanation:

5 0
3 years ago
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