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
Triss [41]
3 years ago
5

Why is evolutiom cosidered to be a scientific theory?

Biology
1 answer:
Fittoniya [83]3 years ago
6 0

Because it can't be proven absolutely. Their are so many other scientific and religious theories and this one is one of the most popular.

You might be interested in
PLZ HELP!!! 50 POINTS!!
Dmitrij [34]
Hypertension is most commonly known as high blood pressure, which is condition where the blood in a persons arteries are abnormally high. high blood pressure/hypertension can be lowered by maintaining a healthy lifestyle. this means that you must exercise regularly and eat well, which tells us that option B and D are incorrect. hypertension is also known to cause heart attacks if it is left untreated for long periods of time and can occur if you are being treated for heart disease, but heart disease is usually never the cause of hypertension. since we have determined that option C is also incorrect,, we a left with option A as the correct answer to this question. having hypertension can be genetic, so if you have two parents who are genetically prone to this condition you are more likely to have it.
let me know if you have any further questions
:)
5 0
3 years ago
Read 2 more answers
In your laboratory journal, describe the two tools of molecular biology that are often described as the scissors and glue for ma
MatroZZZ [7]

The "scissors" of the molecular biology are: DNA Restriction enzymes.

A restriction enzyme is a protein capable of cleaving a DNA fragment at a characteristic nucleotide sequence called a restriction site. Each restriction enzyme thus recognizes a specific site. Several hundred restriction enzymes are currently known.

Naturally present in a large number of species of bacteria, these enzymes have become important tools in genetic engineering.


The "glue" of the molecular biology are: DNA ligase

In molecular biology, DNA ligases are ligase-class enzymes that catalyze the formation of a phosphodiester bond between two segments of DNA. DNA ligases are involved in several essential cellular processes of DNA metabolism: in DNA replication, suture of Okazaki fragments, and in DNA repair and homologous recombination.


The use of these tools in molecular biology: Cloning

Molecular cloning is one of the bases of genetic engineering. It consists of inserting a DNA fragment (called insert) in an appropriate vector such as a plasmid for example. The new plasmid thus created will then be introduced into a host cell, generally the Escherichia coli bacterium. This will then be selected and multiplied to obtain a large amount of the plasmid of interest. Cloning a gene involves inserting it into a plasmid. A clone will be the bacterial transformant that contains this particular plasmid. In this case we speak of clone because all the individuals of the bacterial colony are genetically identical. Molecular cloning is thus different from reproductive cloning (creating an individual genetically identical to another but of a different age) or therapeutic cloning (making tissues from stem cells to perform transplants compatible with the recipient).

Molecular cloning requires restriction enzymes capable of cleaving the DNA, and DNA ligase capable of re-gluing the DNA fragments. Ligase was isolated for the first time from T4 bacteriophage. This enzyme is involved in the repair and replication of DNA. It can bind DNA fragments with compatible sticky ends. At higher concentration, this enzyme is also able to bind two ends of DNA as shown here. T4 DNA ligase works using ATP and Mg ++. It has an activity optimum of 16 ° C, but remains active at room temperature.

7 0
3 years ago
Read 2 more answers
Can you think of other examples of toxics substance, not listed in gizmo?
Kipish [7]

Answer:

3 can you think of other examples of toxic substances not listed in the gizmo from science 101 at Stephen decatur high

4 0
4 years ago
Can anyone help please
Dafna11 [192]

Answer:

Although secreted by the pancreas, glucagon directly impacts the liver as it works to control blood sugar levels. Specifically, glucagon prevents blood glucose levels from dropping to a dangerous point by stimulating the conversion of stored glycogen to glucose in the liver.

Explanation:

:) (i'm not supposed to tell you the answer but i can help you)

7 0
4 years ago
Land plants have to prevent;<br> a) excessive growth<br> b) drying out <br> c) seed development
HACTEHA [7]
D, they need to be able to absorb and keep water to prevent drying out
4 0
4 years ago
Read 2 more answers
Other questions:
  • Select the correct answer
    12·1 answer
  • ​the production of sterile mules by interbreeding between female horses (mares) and male donkeys (jacks) is an example of
    7·1 answer
  • Which genetic disorders, caused by an extra X chromosome (XXY), is characterized by a lack of testicular development in males, e
    14·1 answer
  • In terms of topography, the deepest soils are ________
    6·1 answer
  • You are doing a genetics experiment with the fruit fly. In the "P" generation, you cross two true-breeding flies. The female par
    10·1 answer
  • When an infection occurs the body produces more
    7·1 answer
  • The final fate of electrons in the electron transport chain is combining with _____ to form _____. hydrogen, ATP carbon, carbon
    8·1 answer
  • Give three examples of ways in which biology can help<br> inform everyday decisions.
    14·1 answer
  • Which endocrine gland is considered to be the master gland
    10·1 answer
  • A cell membrane is semi-permeable. What does that mean?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!