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sergiy2304 [10]
3 years ago
13

*

Biology
1 answer:
Pavel [41]3 years ago
7 0

Answer:

carbohydrates because it has protein that helps your body move

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How does a thick layer of algae growing on the surface of a pond affect the lives of other organisms living in the pond? Need an
dangina [55]
1. Algae blocks sunlight from other organisms
2. Kills those that are autotrophs
3. Bacteria in pond will continue to multiply and break down everything dead/deteriorating
4. Bacteria takes over all oxygen supply
5. No life
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4 years ago
Which type of radioactive decay produces particles with a positive charge and very small mass?
saveliy_v [14]
N positron emission, also called positive beta decay (β+-decay), a proton in the parent nucleus decays into a neutron that remains in the daughter nucleus, and the nucleus emits a neutrino and a positron, which is a positive particle like an ordinary electron in mass but of opposite charge.
5 0
3 years ago
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If a SARS-CoV2 virus were to mutate and become and become better at attaching to respiratory cells, how would natural selection
navik [9.2K]

Answer:

Mutations leading to the better attachement of virus to the host cell would allow the virus to spread the infection and leave more progeny. The reproductive fitness of mutant viruses would allow the mutation to spread.

Explanation:

1. The organisms with same resource requirement compete with each other. Viruses are not living things but once inside the host cell, they behave like living things. Rapid multiplication of virus overpopulate the host cells.

2. Genetic variations are added to the viral progeny by random errors during replication of the viral genome. These random variations may  impart beneficial trait, harmful feature or remain neutral. If a random mutation in the SARS-CoV2 virus allows it to adhere better to the cells of the respiratory system, the virus would be better able to infect these cells to spread the infection. Once inside the host cells, the mutant virus would leave more progeny. On the other hand, the wild type virus that lack this mutation would  have lesser chances of entering the host cells and may or may not replicate.

3. The progeny of the mutant virus would compete better with the non mutant ones due to the presence of same mutation.

4. Differential reproduction and more progeny of the mutant virus would spread the mutation among the virus.

4 0
3 years ago
The plates of the lithosphere move (or float) on this hot, malleable __________ _________ zone in the upper mantle, directly und
zysi [14]

Answer:

the plates of the lithosphere move (or float) on this hot, malleable s<u>emi liquid zone</u> in the upper mantle, directly underneath the <u>lithosphere</u>

Explanation:

  • Lithosphere is the outermost layer of earth surface which contains crust and uppermost solid mantle.
  • Tectonic plates are subdivision of lithosphere where tectonic activities take place. Tectonic activities often occur in Lithosphere which affects the structure of this layer by changing the landscape on earth surface.
  • The Lithosphere is the layer where soil forming process takes place.  The lithosphere influences temperature difference on earth when it reacts with the other layers called atmosphere, hydrosphere and cryosphere.

8 0
3 years ago
bacteria and viruses are similar in that they are too small to see with the naked eye they both can cause diseases in humans whi
Savatey [412]

Answer:

DNA or RNA

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There are a number of similarities between viruses and cells. Both are too small to be seen with naked eyes and require a microscope for observation. Both contain genetic material, in the form of DNA and/or RNA. Both of them can replicate, that is, produce more organisms similar to themselves.

8 0
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