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
puteri [66]
3 years ago
13

What is the function of the companion cells?

Biology
1 answer:
Alexus [3.1K]3 years ago
3 0

Answer:  

Companion cell is a type of specialized parenchyma cell, which is located in the phloem of the flowering plants.

Each of the companion cell is usually associated with the sieve element. The main function of the companion cell is uncertain but it regulates the activity of sieve tube.

It plays a major role in the loading and unloading of the sugar molecules into the sieve element. As the sieve tubes do not have nucleus and ribosomes so they need companion cell to help in the transportation of sugar molecules.

You might be interested in
What are the nitrates is used to make?
stiv31 [10]

Answer:

fertilizers

Explanation:

Plants use nitrates as a supply of nitrogen, which is needed to make proteins for healthy growth. Plants absorb nitrates in water through their roots. Nitrates are present in high levels in plant fertilisers. Without nitrates, the amount of chlorophyll in leaves reduces.

8 0
3 years ago
Frameshift mutations ____________.
castortr0y [4]

Answer:

The correct answer is option b. "cause a change in the reading frame of mRNA codons".

Explanation:

Frameshift mutations are among the most drastic mutations because in most cases, result in the translation of a completely different protein. Frameshift mutations are the result of insertions or deletion of one or more nucleotides, resulting in a change in the reading frame of mRNA codons. In consequence, the ribosome translates a different amino acid sequence, based on the new reading frame of mRNA codons.

4 0
3 years ago
Fill in the blank:
OverLord2011 [107]
Nerve, Skin, Cyclins, Cancer
7 0
3 years ago
Ingrid drew a diagram to compare two ways in which biodiversity can be protected.Which label belongs in the area marked Y?
Usimov [2.4K]
The answer is D because its comparing and the other will just be listing 
3 0
3 years ago
Read 2 more answers
NEED HELP ASAP!!!WILL GIVE BRAINLIEST!!!!!!
aksik [14]
B - Only the Neutrons are involved in the fission reaction
4 0
3 years ago
Read 2 more answers
Other questions:
  • What is the purpose of photosynthesis
    10·2 answers
  • Migratory orientations within a species are __________.
    7·1 answer
  • Q3. which of these processes in the water cycle is driven by the heat of sun
    7·2 answers
  • Which biomes cross boundaries between different climate zones?
    15·1 answer
  • Every time energy is transferred between organisms in a food web, some of the energy is lost as heat. TRUE or FALSE.
    6·1 answer
  • N2O(g) + N2(g) + O(g)
    7·1 answer
  • While gardening. omer accidently damages the stem of a plant in his garden what plant process has omer directly affect
    5·2 answers
  • Help me please I need help please omggg
    12·1 answer
  • Help please! Thank you <3
    14·2 answers
  • Question 7 (True False Worth 1 points) (01.02 LC) The results of an experiment can be validated through replication O True 0 Fal
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!