Bile is continuously synthesized by hepatocytes in the liver. It contains bile salts, bile pigments, cholesterol, and phospholipids. The gall bladder merely stores and concentrates bile, releasing it upon eating. The pancreas produces digestive enzymes, duodenum is part of the small intestine. Bile emulsifies fats.
Explanation:
Anthocyanins are water-soluble vacuolar pigments that appear red, purple, or blue depending on pH. They are flavonoids. Chlorophyll is green, carotenoids yellow/orange, lycopene red.
Consider statements about ecology: 1. A food web consists of interconnected food chains. 2. Decomposers recycle nutrients. 3. Biomass decreases at higher trophic levels. Which are correct?
Explanation:
A food web is a complex network of interconnected food chains showing multiple feeding relationships in an ecosystem. Decomposers (bacteria and fungi) break down dead organic matter, returning essential nutrients to the soil for producers. Due to energy loss at each transfer (10% law), the total biomass generally decreases at higher trophic levels, forming an upright pyramid. All statements are correct.
Explanation:
Individuals with blood group 'O' have red blood cells that lack both A and B antigens on their surface. Because there are no antigens to react with the recipient's antibodies, their blood can be safely transfused to individuals of any ABO blood group in emergencies. However, their plasma contains both anti-A and anti-B antibodies.
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