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atroni [7]
3 years ago
5

Describe Bohr's contribution to the atomic model.

Biology
1 answer:
icang [17]3 years ago
3 0

Explanation:

Bohr proposed his quantized shell model of the atom to explain how electrons can have stable orbits around the nucleus. The motion of the electrons in the Rutherford model was unstable because, according to classical mechanics and electromagnetic theory, any charged particle moving on a curved path emits electromagnetic radiation; thus, the electrons would lose energy and spiral into the nucleus.

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jenyasd209 [6]

Answer:

Option (C).

Explanation:

The plasma membrane of the eukaryotes are made of the phospholipid bilayer and the proteins are embedded or span the membrane bilayer. The carbohydrates are attached in moieties with the protein and lipid.

The fluidity of the membrane depends on the saturation, cholestrol and the hydrocarbon chains. The hydrocarbon chain is non polar in nature that allows the diffusion of non polar solutes across the membrane. This decreases the permeability of the polar molecules and the hydrophobic interactions in the membrane.

Thus, the correct answer is option (C).

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3 years ago
. Oleander is a very hardy plant that can survive in a wide
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Answer: you have to tend to it for 1 hour ever day and make sure there are no weed taking the water.

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The first on is Metaphase the middle one is anaphase and the last one is photo phase. Hope it helps:)
7 0
3 years ago
Select all that apply.
stira [4]

Answer:

The correct answers would be maintain chromosome number through generations  and cause genetic variations by recombination.

In Meiosis a cell divides into four daughter cells all of which have half the number of chromosomes present in a parent cell.

It helps in the formation of gametes in sexually reproducing organisms.

These gametes (one from father and one from mother) fuse together to form a zygote. It re-established the chromosomal number as that of the parent.

In absence of meiosis, the chromosomal number would have doubled after each generation.

In addition, the meiosis also increases the genetic variation among the population with the help of crossing over which occurs during the pachytene stage of prophase I.

During this event, genetic information is exchanged between the non-sister chromatids of the homologous chromosomes. It produces a new combinations of genes that are different from either parent.

7 0
3 years ago
Read 2 more answers
HIV, the virus that causes AIDS, is a retrovirus. Which of the following sentences BEST defines a retrovirus?
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Answer:

The answer is D a retrovirus inserts DNA into the host cells genes

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