Stomach walls can be seen as a mechanical digestion, but protein shakes do not require mechanical digestion as they are already in small particles. Mechanical digestion is when large particles is digested to small particles without chemical reaction, but there are no large particles to be mechanically digested in protein shake.
Motility is a similar concept to mobility. It's when organisms can move independently.
Q6. Protein drinks are made out of small pieces of protein powder, so mechanical digestion is not needed. However, chemical digestion is needed to absorb protein as amino acids. So B.
Q35. Critical angle is when the incidence ray reflects/refracts onto the surface (incidence angle of the second diagram). The incidence angle of the second diagram is the angle between normal and 55˚, so it should be 35˚ (90-55). So A.
Q13. Nitrate can come either from fertiliser or sewage. When nitrate is introduced, producers (algae) grows more. However, as other resources (such as sunlight) is limited, lots of producers die, and decomposers respire from the dead body. As a result, oxygen decreases, so D.
Q10. Flagellum is the sperm's tail. A female egg cell does not have flagellum. However, it has energy store to support the embryo. An egg cell does not show motility, so B.
Q25. When sulfur trioxide reacts with water, highly concentrated sulfuric acid mist is formed, so A.
Ok, thank you.
Stomach walls can be seen as a mechanical digestion, but protein shakes do not require mechanical digestion as they are already in small particles. Mechanical digestion is when large particles is digested to small particles without chemical reaction, but there are no large particles to be mechanically digested in protein shake.
Motility is a similar concept to mobility. It's when organisms can move independently.
Ok, but for question 6, what about the stomach walls turning it into chyme? And also, for question 10, what is motility?
Hi, thank you for your question.
Q6. Protein drinks are made out of small pieces of protein powder, so mechanical digestion is not needed. However, chemical digestion is needed to absorb protein as amino acids. So B.
Q35. Critical angle is when the incidence ray reflects/refracts onto the surface (incidence angle of the second diagram). The incidence angle of the second diagram is the angle between normal and 55˚, so it should be 35˚ (90-55). So A.
Q13. Nitrate can come either from fertiliser or sewage. When nitrate is introduced, producers (algae) grows more. However, as other resources (such as sunlight) is limited, lots of producers die, and decomposers respire from the dead body. As a result, oxygen decreases, so D.
Q10. Flagellum is the sperm's tail. A female egg cell does not have flagellum. However, it has energy store to support the embryo. An egg cell does not show motility, so B.
Q25. When sulfur trioxide reacts with water, highly concentrated sulfuric acid mist is formed, so A.