Answer:
B. External respiration
Explanation:
Respiration means transport of oxygen to the cells within tissues, and the transport of carbon dioxide in the opposite direction.
Answer:
food molecules become digested once there is a concentration gradient to drive diffusion, the nutrients need a path across the membrane. fats and fat soluble nutrients can move directly across the lipid membrane. water, gasses ane other very small molecules can diffuse through the pores of the cell.
immediately before passing into the large intestine, the food mass must pass though the <span>ileocecal valve.
</span>This muscle valve is part of the gastrointestinal system and separates the small intestine and the large intestine. The valve <span>opens when a bolus of food passes from the small intestine into the large intestine (your inner sewer pipe) during peristalsis.</span>
Answer:
c) The largest problem is that single viruses may create multiple plaques, resulting in overestimates of the number of viruses present.
Explanation:
- Plaque-based assays are the accepted method used for finding virus concentration in terms of infectious dose.
- Viral plaque assays determine the number of plaque forming units (pfu) in a virus sample, which is one measure of virus quantity.
<span>according to the symptoms it sis Cardiogenic shock
Cardiogenic shock occurs if the heart suddenly can't pump enough oxygen-rich blood to the body. The most common cause of cardiogenic shock is damage to the heart muscle from a severe heart attack.
This damage prevents the heart’s main pumping chamber, the left ventricle (VEN-trih-kul), from working well. As a result, the heart can't pump enough oxygen-rich blood to the rest of the body.</span>
