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il63 [147K]
3 years ago
7

Why do viruses need hosts to reproduce

Biology
1 answer:
Olin [163]3 years ago
5 0
When it comes into contact with a host cell, a virus can insert its genetic material into its host, literally taking over the host's functions. An infected cell produces more viral protein and genetic material instead of its usual products. Some viruses may remain dormant inside host cells for long periods, causing no obvious change in their host cells (a stage known as the lysogenic phase). But when a dormant virus is stimulated, it enters the lytic phase: new viruses are formed, self-assemble, and burst out of the host cell, killing the cell and going on to infect other cells. The diagram below at right shows a virus that attacks bacteria, known as the lambda bacteriophage, which measures roughly 200 nanometers
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Nutrition experts recommend that most people eat less than 2,300 milligrams of sodium a day for good heart health. What percenta
Tamiku [17]

Answer:

you didn't add the whole question... :/

Explanation:

sorry...

6 0
3 years ago
Read 2 more answers
What Is Chemogeny ( Chemical Evolution ) ? And Explain The Steps Of Chemogeny [Both Answer In Simple Word/ Simple Answer Which I
solniwko [45]

Answer:

Chemogeny may be a theory of chemical evolution that depends on the chemical reactions and formation of drugs on the bases of chemical reactions. This theory says that “Life occurs as a results of evolution of inorganic matter”.

In the 1920's Scientists Oparin and Haldane, developed this hypothesis of the chemical origin of life from the primitive atmosphere of the world having matter like methane, ammonia and water. there have been very low concentrations of oxygen thanks to the presence of high temperatures like 5000-60000C. So, these conditions weren't suitable for the free existence of organic compounds, so reactions started happening .

Under conditions like high sunlight and warmth , inorganic matter gets converted to inorganic compounds. And this might end in the storage of organic compounds, which gets more and more concentrated with the passage of many years.

These compounds interact with one another and end in “life”.

So, chemogeny is that the process of chemical evolution of earth and formation of life from pre-existing matter with the assistance of chemical reactions.

Explanation:

Hopefully I was able to help you with the concept. Good luck!

8 0
2 years ago
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1. a diagram that shows the connections among food chains in an ecosystem
Alenkasestr [34]
1. Food web? 2.Habitat 3.Omnivore 4.Primary consumer 5. Producer 6. Secondary consumer
3 0
3 years ago
Suppose that a dominant allele (P) codes for a polka-dot tail and a recessive allele (p) codes for a solid colored tail. In addi
Maru [420]
If two individual are heterozygous for both traits then there genotype will each look like this PpLl. To find the probability, you need to do a cross with both traits. Each parent has the possibility of giving the following combinations: PL, Pl, pL, pl.
 
                 PL        Pl         pL           pl
PL         PPLL     PPLl     PpLL        PpLl        
Pl          PPLl      PPll      PpLl          Ppll
pL         PpLL     PpLl      ppLL        ppLl
pl          PpLl      Ppll       ppLl          ppll

Polka dot tail/ long lashes: 9/16
Polka dot tail/ short lashes: 3/16
Solid Tail / long lashes: 3/16
solid tail/ short lashes 1/16

The answer is (C) 9:3:3:1 ratio with 9 polka dot tails and long eyelashes, 3 polka dot tails and short eyelashes, 3 solid tails and long eyelashes (there seems to be a typo in the question) and 1 short tail short eyelash
           

3 0
3 years ago
Marvin blows up a balloon but lets go of it. The air inside is released and the balloon goes up into the air. What best describe
lawyer [7]

Answer:

The thrust of the air propels the balloon in the opposite direction

Explanation:

5 0
3 years ago
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