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
Xelga [282]
3 years ago
6

Mexico is currently the major foreign source for marijuana smuggled into the united states.

Biology
1 answer:
andreyandreev [35.5K]3 years ago
8 0
The answer to this question is:


A-"True"


Your Welcome
You might be interested in
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
What type of plate boundary occurs where two plates move away from one<br> another?
Ksju [112]

Answer:

divergent boundary

A divergent boundary occurs when two tectonic plates move away from each other. Along these boundaries, earthquakes are common and magma (molten rock) rises from the Earth's mantle to the surface, solidifying to create new oceanic crust.

Explanation:

Plz give me brainliest worked hard

6 0
3 years ago
Read 2 more answers
Marvin blows up a balloon but lets go of it. The air inside is released and the balloon goes up into the air. What best describe
lawyer [7]

Answer:

The thrust of the air propels the balloon in the opposite direction

Explanation:

5 0
3 years ago
BIO AND SCIENCE EXPERTS PLS HELP OR ANYBODY I JUST NEED HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!pLSSSSS
KonstantinChe [14]
Thin coat , becaus eit protects from temperature
5 0
2 years ago
Which of the following is an example of a good nutrition goal?
juin [17]

Answer:

all of the above

Explanation:

4 0
2 years ago
Read 2 more answers
Other questions:
  • Cells lining the small intestine absorb glucose. Which of the following is required to transport glucose molecules across the ce
    9·1 answer
  • What is stored in fat cells?
    13·2 answers
  • What are the differences between the endocrine and urinary system?
    9·1 answer
  • How does a stormwater runoff system store water?
    9·2 answers
  • Which is a point mutation?
    11·1 answer
  • Please Answer 1-5 for me
    10·1 answer
  • What is limited by a cell surface to a volume ratio
    13·1 answer
  • Is this a vascular plant or non vascular plant?
    8·2 answers
  • Describe the environment you live in
    9·1 answer
  • Using the rules for selecting symbols for the elements, which of the following could
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!