The original cell from which we are formed, that is the zygote (after fecundation) is technically in all of our cells, as they are all derived from this one even though it is not living still.
Why is there less genetic variation among humans than among other species? this statement is debatible
Explanation:
In regard to the options, species may exhibit less variation when their branches represent the youngest lineages, suffer loss of genetic variation during evolution (i.e., genetic bottleneck) or show low mutation rates
Answer:
Specialised cell type Animal or plant cell? Function
Phloem cell Plant The building block of the transport system for sugars
Xylem cell Plant The building block of the transport system for water and mineral salts
Explanation:
Answer:
Answer is option (3).
"Blowing your nose may cause bruising and edema."
Explanation:
Nasal surgeries like septoplasty, rhinoplasty, sinus surgery, etc are usually performed to improve breathing, repair nasal injuries, correct deformities
, change the size or shape of the nose, correct sinus problems, etc.
After the surgery, the patient must follow certain instructions for at least 10 days. The instructions are;
- Avoid strenuous activity for at least two weeks as it may cause bleeding or increase swelling in the operated area.
- Avoid nose blowing after surgery as it may cause bleeding and spreading of infection into the eye. When the patient blows the nose after nasal surgery, the sinus pressure increases and results in increased pressure on the operative site which may cause bruising and edema. But it does not increase intracranial pressure or cause a fracture or decrease oxygen availability.
- Apply nasal saline sprays on each nostril frequently as it keeps the nose clean and clears all debris (dried blood) and maintains moisture in the nose. Also, the clearing of nasal passage results in increased oxygenation.
- Use nasal decongestants to reduce the swelling in the nose.
chloroplast has a function in food production based photosynthesis. it receives light and c02 and produce glucose and water.
centrioles are the key factors in cell division. the create poles when a cell divides in two cells. many others activities are performed by them.
