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
Phantasy [73]
3 years ago
15

Difference between companion cell and sieve tube

Biology
1 answer:
9966 [12]3 years ago
3 0

Answer:

The main difference between sieve tubes and companion cells is that sieve tubes are the long, narrow, pointed tubes present in the phloem of angiosperms whereas companion cells are attached to the sieve tubes, regulating the activity of sieve tubes.

You might be interested in
You have a 15kb plasmid. EcoRI cuts the plasmid into 7kb and 8kb pieces, and BamHI cuts the plasmid into 1kb and 14kb pieces. If
Harman [31]

Answer:

a. Bands at 1kb, 6kb and 8kb

Explanation:

The EcoRI and BamHI are the restriction enzymes which cut the DNA sequence especially a plasmid at specific sites called the restriction sites.

The restriction enzymes produces bands of specific length therefore these restriction enzymes are used to estimate the approximate length of the DNA.

In the given question, the

1. EcoRI- produces two strands of 7 kb and 8 kb

2. BamHI- produces two strands of 1kb and 14kb

This shows that the length of DNA sequence is 15kb

But when the DNA strand are digested with both the enzymes simultaneously then it will produce three bands as:

i) 14 kb can be broken down in 2 bands of 6 kb and 8 kb

ii) 1 kb band is already produced by the Bam HI.

This shows that 1+6+8= 15 kb

Thus, Option-A is correct.

5 0
3 years ago
Question 1 options:<br><br> 100%<br><br><br> 25%<br><br><br> 0%<br><br><br> 50%
enyata [817]

0% considering you didn't insert the question...

7 0
3 years ago
The esophagus squeezes food down the digestive tract by an involuntary synchronized muscle movement called ____
3241004551 [841]
The esophagus squeezes food down the digestive tract by an involuntary synchronized muscle movement called the Peristalsis
4 0
4 years ago
Read 2 more answers
Are plants able to do cellular respiration? Why or why not?
Maru [420]

Both plants and animals are able to do cellular respiration. Plants convert nutrients from the soil into usable energy.

This is the plant cellular respiration formula:

oxygen + glucose -> carbon dioxide + water + heat energy

Hope this helped! Let me know if there is anything I need to clarify or explain more in depth

8 0
4 years ago
At the end of meiosis will there be 2 or 4 gametes
True [87]
The answer is four gametes
8 0
3 years ago
Read 2 more answers
Other questions:
  • Which arteries branch off the arcuate arteries?
    11·2 answers
  • Which of the following statements is true? In a balanced ecosystem, the number of trees is less than the number of giraffes. Dec
    14·1 answer
  • What charetieistic is used to classsify a mammal as monotremes marispuial or placental mamel
    15·2 answers
  • 7)
    15·1 answer
  • URGENT!!!
    12·2 answers
  • Explain the role of bacteria in the nitrogen cycle
    14·1 answer
  • What reasons do scientists give for saying that ciruses are not living organisms?
    9·1 answer
  • Who gave the concept of vaccine and immunization?​
    7·2 answers
  • A human needs about 2500 calories of energy per day. You could supply this energy (ignoring nutritional sanity) by eating 600 gr
    13·1 answer
  • Help please what is eaten by what?​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!