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
OverLord2011 [107]
3 years ago
9

Ionic iron is actively transported into the mucosal cells, where it binds to the protein ferritin, a phenomenon called the mucos

al iron barrier. True / False.
Biology
1 answer:
Vika [28.1K]3 years ago
8 0

Answer:

True

Explanation:

The ionic form of iron (Fe2+ and Fe3+) can damage the molecules present in the cell and in the blood. Protective protein escorts namely transferring and ferritin bind to the ionic form of iron during its transport and storage.

In small intestine during absorption, the ionic form of iron is actively transported into the mucosa of intestinal lining. Once inside the mucosal cells, it binds to the ferritin protein. These iron-ferritin complexes of mucosal cells are the stored form of iron.

Following its active absorption, the binding of iron to ferritin in mucosal cells of intestinal lining is referred to as the mucosal iron barrier. When needed, a few of the stored iron is passed into the portal blood while the major proportion of the stored iron is released from the barrier only when the epithelial cells are sloughed off.

You might be interested in
Ron works as a custodian's helper at a school, under the supervision of the custodian. Ron can read and write his name, and can
horrorfan [7]

Answer:

Moderate intellectual disability

Explanation:

Ron works as a custodian's helper at a school, under the supervision of the custodian. Ron can read and write his name and can read first-grade books. He moves slowly and sometimes with difficulty.

Ron most likely suffers from a moderate intellectual disability.

Such type of people can communicate in basic and simple ways. They may have physical signs of impairment.

Approximately 10% of people with intellectual disabilities fall into this category.

7 0
3 years ago
"The combination of a brick red belly and grey back seen in the American Robin, Turdus migratorius, are not seen in closely rela
kogti [31]

Answer:

The best term that portrays the highlights of an american robin with its nearby family members is autapomorphy.  

An autapomorphy is a particular component that is remarkable to a given taxon. In the given case, this component is block red gut and dark back. This component is seen in just the american robin species and not related species in the family.  

Apomorphy is characterizes as a novel trans-formative attribute that is one of a kind to a specific animal categories and every one of its relatives and which can be utilized as a characterizing character for an animal groups or gathering in phylogenetic terms. For instance ownership of quills is an element one of a kind to flying creatures and is a characteristic that characterizes all the individuals from the Ave's class.  

Synapomorphy is a trademark present in a tribal species and shared solely by its trans-formative relatives.  

A plesiomorphy or symplesiomorphy is a tribal character or attribute state shared by at least two taxa​.

6 0
3 years ago
What the dna made of?
andre [41]

Answer:

DNA is a linear molecule composed of four types of smaller chemical molecules called nucleotide bases: adenine (A), cytosine (C), guanine (G), and thymine (T). The order of these bases is called the DNA sequence.

6 0
2 years ago
Read 2 more answers
How is a problem statement and hypothesis connected
aleksley [76]

Problem statement is a question that comes to the mind and then stated whereas hypothesis is given after the question has been identified and the background research has been done.

Problem statement is just a question while hypothesis is an answer to the problem statement that can be proved or disproved. The experiment is carried out after the hypothesis is given in order to validate it. The data of the experiment is studied and the results are interpreted. The results then either validate the given hypothesis.

8 0
3 years ago
What class of rock is basalt?
Georgia [21]
It a rock form from extrusive rock such as the follow of lava
3 0
3 years ago
Other questions:
  • Prions are the smallest known particles that are able to replicate true or false?
    11·1 answer
  • What surrounds all cells and control what enter and leaves the cell
    11·1 answer
  • The transmission of genetic material from one generation to the next is necessary for the survival of a species. Which statement
    14·1 answer
  • The sum of all the chemical reactions carried out in an organism is called
    5·1 answer
  • What prevents a neutron star from completely collapsing upon itself
    14·2 answers
  • What are the 3 main pros and 3 main cons of climate change ? and explain why they are a pros and a cons.
    14·1 answer
  • How does energy provided by the sun influence global patterns of atmospheric movement and the temperature?
    10·2 answers
  • Adenine base pairs with thymine using _________ bonds, and guanine base pairs with cytosine using ________ bonds.
    12·1 answer
  • Which statements describe oceanic crust? Select the two correct answers.
    14·2 answers
  • Please solve all of question 20
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!