Answer:
This mutation will affect the fetus homoglobin"s affinty to bind oxygen molecule.Basically this mutation will decrease the affinity of fetus hemoglobin for oxygen.
Explanation:
IN fetus gamma chains are synthesized, because the gamma chain has low affinity for 2,3 bisphosphoglycerate and high affinity for oxygen. As a result the fetus hemoglobin will always remain in oxyhemoglobin state or R state or Relaxed state.
This will ultimately result in the continuous supply of oxygen to the fetus for its normal functioning.
If beta chain or adult hemoglobin is synthesized in mammalian fetus the the fetus can suffer from hypoxia as 2,3 bisphosphoglycerate bind to the cavity of beta chain of hemoglobin containing postively charged groups to decrease the affinity of hemoglobin for oxygen.
Answer:
a. movement can occur both upward and downward in the plant
Explanation:
The phloem loading causes the accumulation of sugars in the sieved elements generating a negative solute potential (quedas), with a drop in water potential (ψw), so water enters the sieved elements increasing the turgor pressure (ψp). With the discharge of phloem in the drain occurs lower concentration of sugars in the screened elements, increases the solute potential, becoming positive, thus the phloem water potential increases and thus the water leaves the conducting vessel. In the specific case of sugar movement in the phloem, it can be stated that this movement can occur both up and down in the plant.
The figure shows where mitosis occurs in the cell cycle. after the interphase
Answer:
c. a natural disaster
Explanation:
A limiting factor in an ecosystem can either be density dependent or density independent. A density independent limiting factor is that which does not rely on the density of a population to affect it's size.
A density independent factor affects the population size irrespective of how densely populated the population is. Examples of density independent limiting factors that can affect a population are natural disasters like fire outbreak, hurricane, earthquake etc.
<h2>Correct Answer is option "d"</h2>
Explanation:
- Heroine is an drug of opiod plant which is made up of from morphine,a natural substance which taken from the seed pod of the different opium poppy plants.
- Heroine is found in various form such as in white powder and brown powder.
- Other common names for heroine are horse,smack & hell dust.
- People takes heroine in different route of administration such as few people smoke it, some inject, or other used as sniff etc.
- Heroine enter in brain rapidly and combined with opiod receptors on cells ,it involve in pain and pleasure,controlling heart rate etc.
- It show both effects short term and long term effect on the brain and body.
- Hence, the correct answer is option d "Heroine"
