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
Over [174]
3 years ago
10

Someone please help meee

Biology
1 answer:
umka21 [38]3 years ago
8 0

Answer:

Explanation:

Just look up root hair cell on Go.og.le and it'll give the answer hon

You might be interested in
(1) Do you enjoy being out in the fresh air? (2) Does nature restore your spirits? (3) You might want to consider hiking as a ho
SSSSS [86.1K]
The completed sentence with the correct answer is; How does the first sentence in the paragraph help to introduce the main idea. The correct answer is B.
8 0
3 years ago
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
Reatment of childhood disorders can be difficult because _____.
notka56 [123]
The answers is the symptoms can change with age


Hope help!
5 0
3 years ago
What is a double helix
KengaRu [80]
A double helix is <span>a pair of parallel helices intertwined about a common axis, especially that in the structure of the DNA molecule. or in other words a double spiral.</span>
6 0
3 years ago
Read 2 more answers
Choose the best term to complete the analogy:
Papessa [141]

wrecking crew: old building:: lysosome: damaged organelle.

A lysosome is an organelle that contains enzymes that break down and digest unneeded cellular components, such as a damaged organelle.


3 0
3 years ago
Read 2 more answers
Other questions:
  • Scientists have found that Mars has water ice at its poles, even though volcanic activity has never been observed on Mars. Would
    13·1 answer
  • What is meant by a mechanism of evolution?
    8·1 answer
  • What is another name for food level? A. trophic level B. consumer level C. producer level D. decomposer level
    7·2 answers
  • A homozygous tall (dominant) pea plant is crossed with a short (recessive) plant. The probability that an F1 plant will be tall
    5·1 answer
  • What do the numbers on the map represent?
    5·2 answers
  • Why does DNA migrate to the positive electrode?
    15·1 answer
  • What causes variations in asexual organisms?
    6·1 answer
  • Identify the characteristics of plant-like protists. Check all that apply. all contain cell walls autotrophs unicellular all are
    11·2 answers
  • Can someone help me?
    5·1 answer
  • A compound containing Na, C, and O is found to have 1.06 mol Na, 0.528 mol C, and 1.59 mol O. What is the empirical formula of t
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!