1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
WITCHER [35]
4 years ago
12

Most molecular biologists think that viruses originated from fragments of cellular nucleic acid. Which of the following observat

ions supports this theory?
A) Viruses contain either DNA or RNA.
B) Viruses are enclosed in protein capsids rather than plasma membranes.
C) Viruses can reproduce only inside host cells.
D) Viruses can infect both prokaryotic and eukaryotic cells.
E) Viral genomes are usually more similar to the genome of the host cell than to the genomes of viruses that infect other cell types.
Biology
2 answers:
il63 [147K]4 years ago
4 0

Answer:

Option A, Viruses contain either DNA or RNA.

Explanation:

Virus is a non-living microscopic molecule that requires a host to live in and reproduce. All the viruses have nucleic acid either in the form of DNA or RNA. DNA or RNA is genetic material that is enclosed with in a membrane known as capsid. Capsid is also made up of protein. They are extremely small, even smaller than a normal cell and only consist of package of nucleic acid and protein.

Hence, option A is correct

astraxan [27]4 years ago
4 0

Answer:

Option (E).

Explanation:

Virus is the organism that lies between the border of the living and non living organisms. Viruses can be harmful for the living organisms and some viruses are used in the biotechnology as well.

The viral genomes is made of nucleic acids as it can be either DNA or RNA or both. This can be best illustrated as all the living organisms has nucleic acid as their genetic material. The genome of the virus has the similar properties with the host cells that are infected by the virus.

Thus, the correct answer is option (E).

You might be interested in
Nietzsche believes that aesthetics is not as promising as religion. <br> true or false
Fed [463]

Answer:

True

Explanation:

Believe in me

5 0
3 years ago
Which one of the following statements holds true for the induced-fit model?
Gre4nikov [31]
The second statement is correct. Once the enzyme binds to the specific substrate molecule, structural changes can occur in the enzyme's active site to accommodate the product which is the substrate in a transitional state until the reaction is complete to yield the final product. When the substrate interacts with the enzyme, it undergoes a chemical reaction that allows the atoms to move relative to each other, and the bonds possibly lengthen or shorten which causes the most reactive groups to move closer to each other causing a shape change. This shape change in the enzyme makes the substrate more amenable to alteration, as it holds the substrate in a transitional state, which helps speed up the reaction that the enzyme catalyzes.
5 0
3 years ago
Read 2 more answers
Please explain how biotechnology can increase or decrease variation???
fenix001 [56]
<span>Biotechnology can increase the variety and agricultural products through through tissue culture, nitrogen fixation ,  plant pest control and the provision of plant hormones.</span>
8 0
3 years ago
PLZZZZZ HELP ASAP!!! Explain the process of natural selection in your own words DO NOT COPY FROM INTERNET!!!
Rashid [163]

Answer:

If for example food becomes scares for a group of birds they must now eat something else. these birds have two different beaks on large for the food currently going becoming spars and the other just small enough for them to eat the smaller nuts and survive. The birds who can not eat the small nuts will die and then the small beaked birds will become more abundant.

Explanation:

6 0
3 years ago
A/an ____ is a fluid-filled sac in the scrotum along the spermatic cord leading from the testicles.
OleMash [197]

A/an <u>seminal vesicle</u> is a fluid-filled sac in the scrotum along the spermatic cord leading from the testicles.

  • The male reproductive system includes a pair of glands called seminal vesicles that are located on the back of the bladder base in men.
  • Their major job is to create the semen-making fluid that is expelled during ejaculation.
  • The majority of the fluid that makes up semen is produced and stored by two tiny glands called seminal vesicles.
  • The seminal vesicles' fluid is sent into the ejaculatory duct during ejaculation, where it might mingle with sperm and other reproductive fluids.
  • The androgen-dependent seminal vesicle glands release a sizeable portion of the fluid that eventually turns into semen (seminal fluid).
  • The majority of species' contributions to semen volume come from seminal vesicle glands.

learn more about seminal vesicles here: brainly.com/question/11223304

#SPJ4

6 0
2 years ago
Other questions:
  • Rachel is convinced that her occasional headaches are caused by a malignant brain tumor. although several physicians have assure
    14·2 answers
  • When do the chromosomes line up un the middle of the cell?​
    6·1 answer
  • ¿Cuáles son las funciones generales del sistema reproductor masculino?
    12·1 answer
  • Where does diversity come from?
    15·1 answer
  • Describe the similarities and differences between the structure of the xylem and the phloem.
    14·1 answer
  • How does interphase prepare cells for mitosis?
    14·2 answers
  • Describe how a new mRNA transcript is processed before it leaves the nucleus.
    7·1 answer
  • If a biological father has little to do with his biological offspring, and instead spends most of his time with his sister’s chi
    5·1 answer
  • What factor has the most significant effect on brain development during the prenatal period?
    6·1 answer
  • This is a type of inheritance pattern is Blend of both traits. A complete dominance B recessive pattern C co dominance D incompl
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!