Answer:
Transposon is a fragment or sequence of DNA that can move unregulated to any point in the cell genome, leading to a phenomenon called transposition.
Explanation:
Transposon is the name of what was previously known as jumping genes, being a DNA sequence capable of moving freely within a DNA molecule. A transposon can produce mutations by translocation, altering the total amount of nucleotide in DNA molecule.
Genetic changes that are linked to evolutionary processes can be due to the existence of transposons, since they can even induce chromosomal changes.
b.monocyte
c. lymphocyte
d. basophil
The cell observed on a blood smear slide prepared using Wright's Stain with a U-shaped nucleus and pale blue cytoplasm is a monocyte. Monocytes are part of the immune system and can become macrophages that consume harmful pathogens. So, the correct option is b.
On a blood smear slide prepared using Wright's stain, if you observe a large cell with a U-shaped nucleus and pale blue cytoplasm, this cell is most likely a monocyte. Monocytes are a type of white blood cell that have a large, often U-shaped nucleus and abundant cytoplasm that stains pale blue with Wright's stain. They play an integral role in our immune system, often transitioning into macrophages that can consume harmful pathogens or debris in our body.
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Answer:
The correct answer is cephalization.
Explanation:
Being a evolutionary feat, cephalization is umbrella term for concentration of sense organs such as eyes and ears, feeding organs such as mouth and nervous system such as ganglia, brain and cerebellum. For flatworms the ganglia concentrated in one end of the body which is "nerve tissue" in your question.
pulmonaryveins, superiorvenacava and inferiorvenacava (veins) carry blood into your heart.
B. from weasels to eagles
C. from eagles to rabbits
D. from green plants to weasels
Answer:by breaking down carbonic acid into carbon dioxide and water.
The carbon dioxide is expelled from the body
Explanation:the body is able to maintain a constant internal environment through hoemostatis.one of such control is the acid-base balance in the body.
It does this by regulating the amount of hydrogen ions in the blood.A low pH indicates an acidic condition and a high pH indicates an alkaline condition.
The human blood has a pH of 7.35---7.45.it is slightly alkaline and needs to keep this range constant.
The lungs and kidneys involved in regulating the body pH.
When there is excess hydrogen ion in the blood, bicarbonate ions combine with the hydrogen ions to form carbonic acid . this carbonic acid breaks down into water and CO2 .the co2 is expelled from lungs through gaseous exchange.
When the accumulation of acid in the blood is high,the pH drops below 7.35 and this is called respiratory acidosis.
When there is excess alkaline in the blood,the pH goes beyond 7.45 and this is called respiratory alkalosis.