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SCORPION-xisa [38]
3 years ago
9

The question is the primary producer in this ecosystem is the -

Biology
1 answer:
disa [49]3 years ago
7 0

Answer:

Its plant

Explanation:

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1. What was some early evidence of the existence of viruses? Why were they difficult to study?
kogti [31]

Answer:

Answer No 1:

The earliest evidence for the occurrence of viruses was the discovery of an infectious agent in the sap of a tobacco plant. Experiments were set with different filters from which bacteria could pass but viruses being even smaller than bacteria could not pass.

Viruses were difficult to study because they are very small and couldn't be seen even under a microscope.

Answer No 2:

Wendell Stanley made his studies on the tobacco mosaic virus (TMV). Wendell Stanley developed techniques and crystallized this virus. At that time, it was known that even a very simple cell does not undergo crytallization. Hence, Wendell Stanley got to known that this structure is some infectious agent which has the ability  of crystallization.

Answer No 3:

The four forms of viral genomes are:

  • double-stranded DNA
  • single-stranded DNA
  • double-stranded RNA
  • single-stranded  RNA.

Answer No 4:

The capsid can be described as proteins which make up a shell to enclose the genome of a virus. Capsomeres can be described as the protein sub-units from which a capsid is made. The shapes of a capsid can be characterized into

  • rod-shaped: helical viruses, or inside spherical viruses .
  • icosohedral: icosohedral viruses or the heads of bacteriophages.

Answer No 5:

The components of a viral envelope involve phospholipids and membrane proteins and proteins and glycoproteins. The phospholipids and membrane proteins are derived from the host cell.  The proteins and glycoproteins are of the viral origin.

5 0
2 years ago
Genetic mutations pass to offspring in gametes because gametes A) are not germ cells. B) make up all internal organs. C) do not
Anni [7]
Because gametes (sex cells) are the only cells that pass along genetic information. Somatic cells are the cells that have already differentiated into various organs or tissues. They can't pass on a mutation to offspring because they're not involved in creating it.

The answer is D. They fuse during sexual reproduction
3 0
3 years ago
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Explain how Avery discovered the transforming factor.
kondor19780726 [428]

The Avery–MacLeod–McCarty experiment was an experimental demonstration, reported in 1944 by Oswald Avery, Colin MacLeod, and Maclyn McCarty, that DNA is the substance that causes bacterial transformation, in an era when it had been widely believed that it was proteins that served the function of carrying genetic.

4 0
3 years ago
Which section of ocean floor is near the coastlines of all continents?
AfilCa [17]

Answer:

inter tidal zone

Explanation:

inter tidal zone is the section of the ocean floor Wich is near the coastline of all the continents

5 0
2 years ago
General is to army as _______ is to body.<br> A. immune system <br> B. heart<br> C. nervous system
Tresset [83]

Answer:

nervous system

Explanation:

8 0
2 years ago
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