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ale4655 [162]
3 years ago
12

Air is cleaner in the countryside than in the big cities?

Biology
1 answer:
oksano4ka [1.4K]3 years ago
4 0
Compared to big cities, the countryside has cleaner air due to less pollution.
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Creates unique set of DNA.<br> Does Mitosis or meiosis? Or both
Rainbow [258]

Answer:

Meiosis

Explanation:

Mitosis creates an identical set of daughter cells to the parent cells through asexual reproduction but meiosis creates a set of sex cells that are identical to each other but not to the parent cell and this is through sexual reproduction.

4 0
3 years ago
Which statement best describes the orbit of Earth?
ruslelena [56]

Answer:

B. Earth rotates on its own axis and revolves around the Sun.

Explanation:

The earth moves not only in one way but in two ways. It revolves around its axis and revolves around the Sun.

We do not notice it because we are on Earth and we turn together with it.

When the Earth revolves around its (imagined) axis, we call such a movement a rotation, and when it revolves around the Sun - a revolution.

8 0
3 years ago
At the end of meiosis II, how does the DNA in each of the four new cells compare to the DNA from the original cell? A) half as m
Roman55 [17]

Answer:

A

Explanation:

Meiosis results in gametes with one half the number of chromosomes of the parent cell.

8 0
3 years ago
Read 2 more answers
Explain how super-antigens, such as toxic shock syndrome toxin produced by staphylococcus aureus, often lead to the development
GaryK [48]

Toxic shock syndrome toxin is a super-antigen produced by Staphylococcus aureus bacteria .it causes toxic shock syndrome by stimulating the release of large amount of interleukin-1, interleukin-2 and tumor necrosis factor .

Interleukin-1:

It is a group of 11 cytokines that plays a central role in the regulation of immune and inflammatory responses to infections .

Interleukin-2:

It is a type of cytokine signaling molecule in the immune system .interleukin-2 is apart of the body's natural response to microbial infection and in discriminating self and non self foreign.

tumor necrosis factor :

Tumor necrosis factor is protein superfamily  of type 2 transmembrane protein  containing  tnf homology domain and trimers .these proteins are expressed predominantly by immune cells and they regulate diverse cell functions ,including immune response and inflammation ,but also proliferation, differentiation and embryogenesis.

Staphylococcus aureus:

Staphylococcus aureus is a gram positive pathogen cable of producing a variety of bacterial exotoxin known as super antigens .

Toxic shock syndrome :

Toxic shock syndrome is an acute disease mediated by the production of super-antigenic toxin .it is rare , life threatening complication of certain type of bacterial  infections. often it results from toxins produced by staphylococcus aureus bacteria but the condition may also be caused by toxins produced by group a streptococcus bacteria.

Toxic shock syndrome can affect anyone ,including men , older woman, children and postmenopausal women.risk factors of toxic shock syndrome includes skin wounds ,surgery ,and use of tampons and devices such as menstrual cups contraceptive devices ,etc.

Symptoms of toxic shock syndrome toxin:

A sudden high fever,low blood pressure ,vomiting or diarrhea ,rash resembling sunburn ,muscle aches ,redness of eyes ,mouth and throat ,headache and seizures.

Conclusion:

If you have these symptoms of toxic shock syndrome then immediately call your doctor or consult a doctor and take precautions.

Learn more about toxic shock syndrome toxin here:

brainly.com/question/3866751

#SPJ4

7 0
2 years ago
Name the different types of bio molecules.
Over [174]

Answer:

The four major types of biomolecules are carbohydrates, lipids, nucleic acids, and proteins.

Explanation:

5 0
3 years ago
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