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Papessa [141]
3 years ago
5

Cells from an advanced malignant tumor most often have very abnormal chromosomes, and often an abnormal total number of chromoso

mes. Why might this occur?

Biology
1 answer:
Vera_Pavlovna [14]3 years ago
4 0

Answer:

This happened because the check points in cell cycles are not working properly which can help to stop cells having abnormal chromosomes.

See the attachment for proper understanding what actually happened in cell cycle check points.

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Match the following vocabulary words.
Simora [160]

Answer:

1) Immunogene

2) immunoglobulin / antibodies

3) Antigen

4 Vaccine

Explanation:

Vaccine: vaccines are made from a weakened or killed form of a Disease causing micro organism

Antigen : these are toxins or foreign substances that causes or stimulates immune response in the body

Immunoglobulin: they are also known as antibodies, they are protein produced by the by the white blood cells to combat foreign substances

Immunogene: these are molecules or substances that have the capability of stimulating immune response by the immune system of an organism.

3 0
2 years ago
Which of the following statements about the organization of the purine synthetic enzymes are true? The process involves multifun
Svet_ta [14]

Answer: All of the statements are true.

Explanation:

Purines are biologically synthesized as nucleotides and in particular as ribotides, that is, bases attached to ribose 5-phosphate. Adenine and guanine are both derived from the nucleotide inosine monophosphate (IMP), which is the first compound in the pathway to have a completely formed purine ring system.

Purine nucleotides can be synthesized in two distinct pathways. First, purines are synthesized de novo, starting with simple starting materials such as amino acids and bicarbonate. the purine bases are assembled already attached to the ribose ring. Alternatively, purine bases, released by the hydrolytic degradation of nucleic acids and nucleotides, can be salvaged and recycled. Purine salvage pathways are mostly noted for the energy that they save and the remarkable effects of their absence.

All statements are correct because the organization of purine synthetic enzymes involves multifunctional enzymes, reversible enzyme formations, through out the sequence there is maintenance of high local concentration and the ten steps requires only six enzymes.

5 0
2 years ago
A parabola is given in the diagram below. What are the coordinates of the vertex
nevsk [136]

Answer:

1

Explanation:

3 0
2 years ago
Using natural resources is considered a sustainable practice because most natural resources are in limitless supply and cannot b
Eva8 [605]

This is a false statement.

Natural resources are those substances that occurs naturally which are used by human being for various needs.

Example of natural resources that need sustainable practice include:

  • Forest
  • wild life
  • mineral resources
  • water
  • soil

Sustainable use of these natural resources is the wise or judicious or intelligent use of these resources to ensure their availability and preserve the quality of the environment.

Therefore, using natural resources is considered a sustainable practice because most natural resources are in limited supply and can be degraded or depleted

Learn more here:

brainly.com/question/22058920

7 0
2 years ago
Complete the sentence:
Rasek [7]

Answer:

independent variable

Explanation:

The independent variable is the variable while being tested and it will change the population of the bean.

4 0
3 years ago
Read 2 more answers
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