Top answers

What is left sided heart failure (mark 1), which organ can it lead to fluid buildup in (mark 2) and why (mark 3)

The left atrium receives oxygenated blood from the lungs via the pulmonary vein (the only vein to pump oxygenated blood) and ejects via the left ventricle to the aorta.Left sided heart failure means that the...
JP
Answered by James P. • Biology tutor
3387 Views

How is food absorbed into the blood?

Food is masticated and broken down, to increase its surface area, in the mouth. Particularly, starch is broken down by the enzyme amylase. An enzyme is a biological catalyst that has an active site and is co...
Answered by • Biology tutor
4612 Views

Describe the processes involved in the absorption of the products of starch digestion

glucose moves in with sodium into epithelial cellvia carrier/channel protein sodium removed from epithelial cell by active transport/sodium-potassium pump into blood therefore maintaining low conc of sodium ...
MB
Answered by Mo B. • Biology tutor
12385 Views

How are proteins produced?

Proteins are comprised by amino acids and the order of these amino acids determines the type of protein. This order is coded by the sequence of DNA bases. Transcription & translation : In the nucleus, DN...
GV
Answered by Gina V. • Biology tutor
3166 Views

How do muscles contract? Describe the sliding filament theory.

When an action potential from a motor neurone stimulates a muscle cell, a number of things happen to cause sarcomeres (the smallest contracting unit of a muscle cell) to shorten and contract very rapidly. Ca...
IL
Answered by Isabel L. • Biology tutor
4568 Views