BIOLOGY HIGH SCHOOL

How many known STIs exist today?

Answers

Answer 1
Answer:

There are more than 30 known sexually transmitted infections (STIs) that exist today.

Sexually transmitted infections (STIs), also known as sexually transmitted diseases (STDs), are infections that are primarily transmitted through sexual contact, including vaginal, or oral sex. They can be caused by bacteria, viruses, parasites, or other organisms. STIs can affect people of all genders and sexual orientations.

Some of the most common STIs include chlamydia, gonorrhea, syphilis, human papillomavirus (HPV), herpes simplex virus (HSV), human immunodeficiency virus (HIV), and hepatitis B and C. It's important to note that the number of known STIs can change over time as new infections are discovered or classified.

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Answer 2
Answer: There are several STIs that have been discovered today, but only 14 of them are listed as common. Some of the common STIs included in the list are HIV, Gonorrhea, Syphilis, Trichomoniasis, Hepatitis, Chlamydia, Chancroid and Yeast Infection. Some of the STIs are curable but some are not. 

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Which gas would the leaf disks produce if they were carrying out the light-dependentreaction? What would this cause them to do?

Answers

Answer: In respiration, glucose is broken down to produce energy that can be used by the cell, a reaction that uses O 2 and produces CO 2 as a byproduct.

Explanation:

Suppose that the human insulin protein that was produced by the bacteria was much shorter than it should be. Upon further investigation, it was found that the DNA of the human insulin gene had a mutation while in the bacterial cells. What type of mutation could not result in these observations?

Answers

Silent Mutation

Explanation:

  • Mutations are changes in a DNA sequence, and they can occur due to radiation or other types of DNA damage. If mutations occur in the part of a gene that encodes a protein (the coding region of a gene), they can change the amino acid sequence of that protein
  • But not always; a silent mutation is a type of mutation in the coding region of a gene that doesn't actually change the amino acid sequence of the protein that is made
  • A point mutation is a change in one nucleotide or base pair of a DNA sequence. An example would be if a C in the DNA code was changed to a T
  • Point mutations can happen anywhere along a DNA sequence, Mutations in the coding region of DNA can directly affect the amino acid sequence of the protein product

A bacterium would be considered?A. Unicellular
B. A cell
C. An organism
D. All the above

Answers

It should be D. Bacterium are single celled organisms.
A bacterium is any one of a group of very small living things that often cause disease

Why is it important for natural monopolies to exist?

Answers

it is important for natural monopolies to exist because : they provide easy access to a variety of goods and services

Natural monopoly happens when a company could serve almost the entire market with a lower cost

hope this helps
They provide easy access to a variety of goods and services.

What biomolecule has involvement in the immune system

Answers

An antigen is a biomolecule, such as a protein or sugar, that binds to a specific antibody. An antibody/antigen interaction may stimulate an immune response. Not every biomolecule is antigenic and not all antigens produce an immune response. B cells are the major cell type involved in the humoral immune response.

Final answer:

The key biomolecule involved in the immune system is a protein known as an antibody. These are produced by B cells and help the immune system recognize and destroy foreign substances like bacteria or viruses.

Explanation:

The biomolecule that has significant involvement in the immune system is a group of proteins known as antibodies or immunoglobulins. These antibodies are produced by certain types of white blood cells (B cells). They play a crucial role in the immune response by recognizing and binding to specific antigens such as bacteria or viruses, enabling other parts of the immune system to destroy these foreign substances more effectively. For example, if a person becomes infected with a virus, the immune system will produce antibodies specific to that virus. Once these antibodies attach to the virus, they basically mark it for destruction by other cells in the immune system.

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Human impact on trees has been completely negative.

Answers

This is true. The impact of human on trees has been completely negative. This includes deforestation which causing negative effects on the environment. A massive scale of Earth’s forest has been cleared through deforestation. This results to the damage of the land quality.
Actually it's false lol we plant them!!!
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