Answer:
The cilia is one of the things that act defensively in the respiratory system.
Explanation:
It propels a mucus-like liquid that covers the airway which traps pathogens (potentially infectious microorganisms) and other particles, preventing them from reaching the lungs.
Answer:
Similarities between Mitochondria and Chloroplasts-
Both mitochondria and chloroplast consists of DNA , have two membranes, have fluids inside them and convert energy.
Difference between Mitochondria and Chloroplasts-
They have different number of compartments, have different functions, and are involved in different energy processes.
Explanation:
Difference in Mitochondria and Chloroplasts-
a) Chloroplast is found in plants and unicellular organism and Mitochondria is found all cells.
b) Chloroplast converts solar energy into chemical energy while Mitochondria converts one form of chemical energy into other form of chemical energy
c) Chloroplast is involved in photosynthesis while mitochondria is involved in cellular respiration.
d) Chloroplast has three parts i) Thylakoid ii) stroma and iii) granum while mitochondria has three parts i) Critsa ii) Matrix
Similarities between Mitochondria and Chloroplasts-
Both mitochondria and chloroplast consists of DNA , have two membranes, have fluids inside them and convert energy.
Answer:
tire and balloons
Explanation:
the tire of an car contains gas pressure
the balloon also contains gas pressure because it contains gas molecules
Answer:
D. DDT
Explanation:
DDT is highly persistent in the environment means that it break down very slowly in the environment. The half-life for DDT is from 2 to 15 years. Half-life is the time needed for the degradation of half of the compound. Persistent bio-accumulative toxic substances (PBTs) are chemicals that break down slowly in the environment and its accumulation in living organisms are toxic. Some PBTs are dispersed through air currents while some uses other environmental pathways, resulting in contamination of regions far from their points of origin.
Answer: b. reaction 3
Explanation: When an enzyme is present in a reaction acts as a catalyst, increasing velocity of reaction and decreasing the activation energy, when not present an enzyme the reaction velocity is very low and implies high activation energy, being unfavorable to the system
