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
Whitepunk [10]
3 years ago
15

Nitrate acts as a poison by interfering with oxidative enzymes. oxidizing hemoglobin to methemoglobin, which cannot carry oxygen

. reacting with enzymes that break down toxic wastes in the liver. blocking cell protein synthesis.
Biology
1 answer:
xxMikexx [17]3 years ago
7 0

Explanation:

Methemoglobin (metHb) is an oxidized derivative of hemoglobin in which heme iron is in the ferric (Fe3+) or oxidized state rather than the ferrous (Fe2+) or reduced state. Small amounts of methemoglobin normally are formed daily, associated with the release of oxygen from hemoglobin (auto-oxidation).

Methemoglobin cannot bind oxygen, which means it cannot carry oxygen to tissues. It is bluish chocolate-brown in color. In human blood a trace amount of methemoglobin is normally produced spontaneously, but when present in excess the blood becomes abnormally dark bluish brown. The NADH-dependent enzyme methemoglobin reductase (a type of diaphorase) is responsible for converting methemoglobin back to hemoglobin.

Normally one to two percent of a person's hemoglobin is methemoglobin; a higher percentage than this can be genetic or caused by exposure to various chemicals and depending on the level can cause health problems known as methemoglobinemia. A higher level of methemoglobin will tend to cause a pulse oximeter to read closer to 85% regardless of the true level of oxygen saturation. An abnormal increase of methemoglobin will increase the oxygen binding affinity of normal hemoglobin, resulting in a decreased unloading of oxygen to the tissues.

You might be interested in
Describe the changes that take place during the menstrual cycle from Day 1-14 to the following:
allsm [11]

Answer:

Explanation:

An unfertilized egg is shed from the body during menstruation.  The lining of the uterus become thicker, getting ready in case of pregnancy.

It is not a fun experience :(

7 0
2 years ago
You have learned that having linear DNA has consequences, the major one being that the DNA is shortened every time it replicates
dimaraw [331]

Answer:

The sites of replication.

Explanation:

Linear DNA is and advantage for bigger organisms because there can be many places where replication can occur, otherwise, in circular DNA replication can only happen in he ORI place, that is unique. This feature allows to replicate several genes in the same amount of time being more efficient in protein synthesis.

4 0
3 years ago
"Dietitians often recommend that we frequently consume foods containing omega-3 fatty acids. An omega-3 fatty acid is one that h
9966 [12]

An omega-3 fatty acid is one that has its first double bond at the <u>methyl </u>end of the molecule.

Explanation:

Fatty acids will have a methyl end and a carboxylic acid end and the long carbon chain.

The number of hydrogen atoms attached to the carbon atoms depends upon its saturation type – saturated or unsaturated fatty acid.

The main advantage of the unsaturated fatty acids is that they have fewer hydrogen atoms because they are replaced with a double bond between the carbon atoms.

There are both short chain (carbon atoms 18 or less) or long chain (more than 20) fatty acids.

Omega-3 fatty acids are polyunsaturated fatty acids (PUFA). Depending upon the carbon chain length, the first C=C double bond occurs between the third and fourth carbon atom from its methyl end on the carbon chain of the omega-3 fatty acid.

Omega-3 fatty acids are recommended by dieticians due to its immense health benefits especially for the heart since it reduces blood triglyceride level, blood pressure, plaque formation, and the risk factors for heart attacks or failure. These are also good for the eyes, to treat mental depression, and for fetal brain development during pregnancy.

7 0
2 years ago
Highly contagious or transmissible disease and has the potential for very rapid spread irrespective of national borders, causing
butalik [34]

Answer:

Transboundary

Explanation:

Transboundary refers to a highly contagious disease that has the potential to spread extremely rapid irrespective of national boundary. They cause high mobility and motility in the susceptible animals. An example of such diseases include Avian Influenza and the African Swine flu.

Zoonotic disease is disease that can be transmitted from animals to Humans example anthrax.

Exotic disease refers to a disease that does not normally occur in a particular region

Emerging diseases are those that have recently appeared and are cases are rapidly increasing.

Epizootic are those that appear in a large number of animals in the same place at the same time

7 0
3 years ago
Is a carbohydrate organic, inorganic, or ionic?
viva [34]

Answer:

the answer to this is organic

5 0
2 years ago
Other questions:
  • Jimmy is riding in his car to the office. It is snowing heavily and he can see frost forming on the windowpane. Which type of wa
    5·2 answers
  • Many scientist believe that dinosaurs became extinct due to
    6·2 answers
  • Choose 5 different organisms. At least one of your organisms needs to be a plant. List an adaptation and describe how the adapta
    11·1 answer
  • Disulfide bonds are involved in maintaining ________ protein structure as well as the ________ level of protein structure exhibi
    8·1 answer
  • A dominant mutation in Drosophila called Delta causes changes in wing morphology in Delta/+ heterozygots. Homozygosity for this
    12·1 answer
  • Which of the following is a conceptual model that represents the flow of energy through an ecosystem
    9·1 answer
  • A Paramecium has an internal sucrose concentration of 0.040 M, a glucose concentration of 0.035 M, and a fructose concentration
    11·1 answer
  • What do you mean by sex​
    6·2 answers
  • Im confused please help me!
    6·2 answers
  • What would the alleles be for the following organism?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!