Question Number 1
Large, insoluble molecules have to be digested before they can be.
Question Number 2
Which two organs are connected by the hepatic portal vein?
A. Intestine and kidneys
B. Intestine and liver
C. Liver and kidneys
D. Lungs and heart
Question Number 3
Which statement about enzymes is correct?
A. They all are proteins
B. They changed by the chemical reactions they control
C. They are destroyed by temperatures below 10c
D. They are found only in the alimentary canal