Convection is a type of heat transfer that occurs
in molecules. It refers to the collective movement of molecules within fluids
and rheids (non-molten solids). Convection happens through the process of
diffusion, advection, or the combination of both. Therefore solids cannot
undergo this process because bulk current flows and significant diffusion
cannot take place within the molecules of solids. Aside from this, solids have
bigger molecules that are too compact and cannot move freely unlike fluids do.
<span>
Convection can best be seen through an experiment
when a glass of water is exposed to a heat source. The change in temperature in
the glass causes warm fluid to move into cooler areas which causes it to boil
and bubble. </span>
Enzymes can be denatured by:
1) pH Levels
2) Temperature levels
3) Enzyme inhibitor Presence
4) Substrate Concentration
Hope this helps!
So the important factors are air pressure, temperature, and humidity. The base it is normal and easy to breathe. As you go towards the summit the temperature drops, air density and pressure is low; air is thin, and the humidity is also low. This results in hyperventilation as the air pressure is low. Also there is a chance of getting Hypoxia. The environment is harsh.
There are choices for this question namely:
<span>a. Human immunodeficiency virus (HIV)
b. T-lymphocyte virus type I
c. Epstein-Barr virus
d. Parvovirus
e. Poxvirus
</span>
The correct answers are HIV, T-lymphocyte virus type I, and Epstein-Barr virus. HIV or human immunodefiency virus will predispose the patient in developing Kaposi sarcoma in later stages of acquired immunodeficiency syndrome. T-lymphocyte virus type I is believed to be the etiological agent for developing T-cell leukemia or lymphoma. Epstein-Barr virus is associated with both nasopharyngeal carcinoma and Burkitt lymphoma.
<em>Parvovirus B19 causes a viral exanthem called erythema infectiosum which has no propensity to malignancy. Poxvirus is the etiologic agent for molluscum contagiosum, also with no propensity in developing malignancy. </em>
