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3 years ago

A positively charged object is placed within a positive electric field.

Biology

1 answer:

Eva8 [605]3 years ago

8 0

Answer:

The correct answer is it will be pushed away from the source of the electric field.

Explanation:

An electric field contain two electrodes positive charged electrode or anode and negative charged electrode or cathode.These 2 electrodes cathode and anode are connected by an electric wire to a battery and this whole system is linked to a electric system.

When electric current is applied oxidation reaction occur in anode and reduction reaction occur in cathode.

Now according to the question if a positively charged object is placed within a positive electric field then pushes the positively charged object away from itself because we all know that positively charged ion reflect another positively charged ion.

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Crops are protected from disease-causing fungi by use of fungicides or by the use of genetically engineered fungi-resistant crop

Mkey [24]

Correct answer: C). Fungicides interfere with fungal growth and reproduction, while genetic engineering produces plants resistant to fungi.

Fungicide is a chemical substance that is known to cause toxicity in fungi in order to kill them. Its use can help to reduce the number of fungal infection that causes great loss to plants and its productivity.

In genetic engineering, the DNA of plants is altered in such a way that it produces a toxic protein, which will kill the fungi when it tries to infect them or slow down the growth of the plant.

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3 years ago

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Jenner's successful use of cowpox virus as a vaccine against the smallpox virus was due to the fact that ______. (A) the cowpox

irinina [24]

Answer: option C) cowpox and smallpox are caused by the same virus

Explanation:

Cowpox is a skin disease that affects cattle. It is caused by an Orthopoxvirus, with lesions occurring principally on the udder and teats of the animals.

Human infection may occur from touching infected cows, and thus giving immunity to smallpox (an acute infection caused by the same poxyvirus, in HUMANS)

So, Jenner's successful use was because cowpox and smallpox are caused by the same virus

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3 years ago

What is the main theme in reproduction.

IgorC [24]

<h2>what is the main theme in reproduction.</h2>

The five central themes of biology are structure and function of cells, interactions between organisms, homeostasis, reproduction and genetics, and evolution

hope it helps

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2 years ago

Which structures that distinguish a eukaryotic cell from a prokaryotic cell are part of the internal membrane system?

Nat2105 [25]

Answer:

nuclear membrane, endoplasmic reticulum, Golgi apparatus, and vesicle

Explanation:

The structures or organelles in internal membrane system in the cell do all production, processing and secretion function together. A prokaryotic cell does not contain any membrane bound organelles but Eukaryotic cells do have. Nuclear membrane has double membrane and golgi-rendoplasmic reticulum and vesicle contain single membrane so all these organelles are membrane bounded.

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3 years ago

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What is the volume of 2.7 moles of N2 at STP?

AnnyKZ [126]

Answer:

60.48L

Explanation:

By definition, at STP (Standard Temperature and Pressure), any gas takes up a volume of 22.4L.

Consequently, because the ideal gas law (PV=nRT) states that the number of moles is directly proportional to the volume of the gas, 2.7M of N2 takes up a volume of:

2.7*22.4L

=60.48L

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3 years ago