Plz answer the given 2 questions
Q. Refer to the given graph showing bacterial population measured in the river from the point of agricultural waste discharge. Identify the correct statement.
A. At point Q , the amount BOD is more than at point R.
B. At point Q, water is most contaminated with disease causing microbes.
C. At point S, the concentration of biodegradable waste is highest in water.
D. Aquatic organisms living at point P. will show maximum concentration of non-biodegradable residues in their bodies.
Q. What is the function of ATP in skeletal muscle contraction ?
A. Hydrolysis of ATP by myosin energizes the cross -bridges, providing the energy for force generation.
B. Binding of ATP to myosin dissociates cross-brodges bound to actin, allowing the bridges to repeat their cycle of activity.
C. Hydrolysis of ATP by the Ca2 +-ATP ase in the sarcoplasmic reticulum provides the energy for the active transport of Ca2 + into the reticulum, lowering cytosolic Ca2 + to per-release levels, ending the contraction and allowing the muscle fiber to relax,
D. All of these
Dear Student,
Q1
Option A is correct.
P is the point of discharge of wastes, hence oxygen needed by microorganisms called BOD to degrade the waste will be highest at this point. Similarly BOD at Q will be more than R and S.
Q2.
Option D is correct.
All the above statements are True.
Regards
Q1
Option A is correct.
P is the point of discharge of wastes, hence oxygen needed by microorganisms called BOD to degrade the waste will be highest at this point. Similarly BOD at Q will be more than R and S.
Q2.
Option D is correct.
All the above statements are True.
Regards