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Gnesinka [82]
3 years ago
7

Are viruses alive? This question is debated among scientists throughout the world. Consider the following passage. Scientific re

searchers discovered agents that behaved like bacteria causing diseases such as rabies and hoof-and-mouth, but were much smaller. At this time it became the general view that viruses were biologically "alive." This perception changed in 1935 when the tobacco mosaic virus was crystallized and scientists demonstrated that the particles lacked any mechanisms necessary for metabolic function. It was determined that viruses consisted of a nucleic acid, DNA or RNA, surrounded by a protein shell and the scientific view changed: viruses are complex biochemical mechanisms but not alive. According to the passage, the MOST IMPORTANT evidence supporting the opinion that viruses are not alive is that they A) cause disease. B) contain DNA or RNA. C) are much smaller than bacteria. D) do not have a cellular structure.
Biology
2 answers:
umka2103 [35]3 years ago
6 0
No, viruses are not alive.

tatuchka [14]3 years ago
5 0

Answer:

im sure it is d like that person said bc i took the test

Explanation:

lol idk why that woman saw (a.b.c.d.) and just said 'nO, vIRusEs ArE NOt AlIvE"

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GenaCL600 [577]
In English please so I can help you with your problem
7 0
3 years ago
You notice your friends MP3 player is turned up so loud you can make out the words to each song though she is wearing earbuds. Y
Leya [2.2K]

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3 0
3 years ago
If you count 52 purple rough corn kernels and 50 yellow smooth corn kernels how many people smooth corn kernels should you expec
Vitek1552 [10]

Answer:

17

Explanation:

In corn,

Smooth kernel (S) is dominant to rough kernel (s)

Purple kernel (P) is dominant to yellow kernel (p)

Since no information has been given about the cross here let us assume it to be a standard dihybrid cross.

The phenotypic ratio of dihybrid cross is 9:3:3:1. 9/16 will show dominant phenotype for both traits, 3/16 will show dominant phenotype for one trait, other 3/16 will show dominant phenotype for the second trait, 1/16 will have recessive phenotype for both the traits.

Here,

Purple rough (P_ss) = 52

Yellow smooth (ppS_) = 50

Both of them show dominant phenotype for one trait so they each form 3/16 of the progeny.

If the total progeny was z, 3/16*z = 50

z = (50*16)/3 = 267

Total progeny = 267 kernels

Yellow rough kernels (ppss) = (1/16*267) = 17

So approximately 17 corn kernels will be yellow and rough.

8 0
3 years ago
Which of these groups is the smallest level of classification
Sedbober [7]

From largest to smallest, the seven classification are: 1.Kingdom

2.Phylum

3.Class

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4.Order

5.Family

6.Genus

7.Species


So species is the smallest  


3 0
3 years ago
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C hope u do great I’m really sorry if I’m wrong
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