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
vlada-n [284]
3 years ago
12

Which nitrogenous base is normally present in RNA

Biology
2 answers:
Margarita [4]3 years ago
8 0

Answer:   In DNA, the pyrimidine cytosine always pairs with the purine guanine, while the pyrimidine thymine always pairs with the purine adenine. RNA does not contain thymine, though, so in RNA adenine pairs with uracil.

Explanation:

Tpy6a [65]3 years ago
3 0
RNA contains cytosine and uracil as pyrimidine. DNA has cytosine and thymine.
You might be interested in
The side of a mountain range that faces the wind often receives more what than the downwind side of the same range?
irina1246 [14]
I am pretty sure that the side of a mountain range that faces the wind often receives more<span> precipitation </span><span>than the downwind side of the same range.</span>
7 0
3 years ago
Add to this diagram and explain why a cell needs to constantly break down ATP to make ATP
leonid [27]
Anything that the cell does require energy also known as ATP so the process of breaking down ATP uses ATP and vice versa
7 0
3 years ago
A, B, C, D and E are pathogens of different diseases for human beings. The route of entry of pathogens in human body is differen
Goryan [66]

Answer:

Microorganisms which causes diseases is known as pathogen.

Explanation:

<u>PATHOGEN -:</u> Pathogens are agents that live in a host and are responsible for causing infections or diseases in that host, such as a human being. Microorganisms such as bacteria , viruses , fungi or protozoa, or other organisms such as parasites, worms and even contagious proteins such as prions, may be pathogens.

<u>Viruses:</u> Viruses are micro-organisms that are composed of nucleic acid and covered by a protein sheet. A lipid (fatty) outer layer is also present in some viruses. Enveloped viruses are called these. Non-enveloped viruses are considered those that do not have this lipid outer layer. Only inside their host's living cells are viruses able to replicate.<u> EXAMPLE -:</u>  Influenza (influenza A and B viruses) and the common cold (rhinovirus) are examples of infections caused by viruses.

<u>Bacteria: </u>These are microorganisms which have a nucleus containing DNA surrounded by a cell wall or membrane. Among bacteria, the composition of the cell wall differs. If they are able to access food and nutrients, they have a more complex structure than viruses and can multiply beyond the host.<u> EXAMPLE -: </u> Foodborne diseases can be caused by bacteria such as Salmonella enterica and Escherichia coli, while Staphylococcus aureus can cause skin infections.

<u>Fungi:</u> Fungi are single-celled or multicelled species that can live outside a host. They consume food and nutrients created after digestive enzymes have been secreted into their atmosphere. <u>example-: </u> The foot of the athlete (Trichophyton mentagrophytes) and yeast infections (Candida albicans) are examples of infections caused by fungi.

<u>Prions:</u> These are infectious agents made up entirely of proteins and capable of transferring to other prion proteins their infectious properties.<u> EXAMPLE -: </u>Extreme infectious diseases such as bovine spongiform encephalopathy (mad cow disease) and variant Creutzfeldt-Jakob disease (vCJD) can be caused by prions.

<u>Protozoa: </u>Protozoa are single-celled organisms that display habits that are similar to animals, such as the ability to travel through water, and are capable of harvesting other microorganisms. They are able to live outside the human host, but when they enter the human host and spread, causing infections and diseases, they may also be parasitic in nature. <u> EXAMPLE -: </u>Malaria and giardia include common infections

  • <u>Yes , pathogen enter into the body directly -:</u> Direct contact infections spread when, through direct physical contact with blood or body fluids, disease-causing microorganisms move from the infected person to the healthy person. Touching, kissing, sexual contact, contact with oral secretions, or contact with bodily lesions are examples of direct contact.
  • <u>INCUBATION PERIOD OF A PATHOGEN -</u>:The period of incubation is the interval between exposure to a pathogenic organism, a drug, or radiation, and when the first signs and symptoms are evident.
5 0
3 years ago
What is the boundary around an animal cell
ollegr [7]

Answer:

plasma membrane/ cell membrane

6 0
3 years ago
In what ways might a scientist communicate with the wider community in a scientific inquiry
DedPeter [7]

Using things such as the internet. For example, if a scientist wanted feedback, he could turn to an org of other scientists across the globe and get their help.

4 0
3 years ago
Other questions:
  • Describe the factors considered in an analysis of a person’s or population’s ecological footprint.
    10·1 answer
  • How does water at room temperature become gas?
    8·1 answer
  • In tomatoes, tall (D) is dominant over dwarf (d) and smooth fruit (P) is dominant over pubescent fruit (p), which is covered wit
    6·1 answer
  • What is the difference between an atom and an ion.
    6·1 answer
  • Which statement describes a similarity between the calcium pump and the sodium-potassium pump? Both pumps move substances from h
    7·2 answers
  • Explain why fat loss during minimum food intake (fasting, starvation or extreme dieting) may be less than when at least some foo
    12·1 answer
  • 1- how can prokaryotes be used by humans/professionals?
    11·1 answer
  • Which of these statements best describes a niche in an ecosystem?
    14·1 answer
  • Climate change storys​
    15·1 answer
  • Need help on this question
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!