Answer:
1. the boy got bad smell from the opened packet left on the table due to rancidity.
2. the packet which was kept in the refrigerator did not have bad smell because they did not come in contact with oxygen.
Explanation:
rancidity - when fats and oils are oxidised they become rancid and their smell and taste changes.
when eatbles come in contact with oxygen they oxidised due to this we get bad smell and taste from it .
D.
variable-ratio schedule of reinforcement.
Answer:
Mitochondria and the chloroplast
Explanation:
Electron transport refers to the transfer of of electrons from electron donors to electron acceptors via a reduction-oxidation reaction.
In the mitochondria the process is called Oxidative phosphorylation whereas in the Chloroplast it is called Photo-phosphorylation since it utilizes light.
Chemiosmotic mechanisms allow the movement of ions across a semi-permeable membrane down their electrochemical gradient.
In both mitochondria and chloroplast,have these mechanisms for the production of ATP .
Answer:
B. A proton gradient drives the formation of ATP from ADP and inorganic phosphate via ATP synthase.
Explanation:
Light reaction of photosynthesis includes the splitting of water in the presence of sunlight and electron transfer from PSII to PSI via an electron transport system. During the transfer of electron through cytochrome of the electron transport system, the proton concentration gradient is generated across thylakoids. The proton concentration gradient is harvested to drive ADP phosphorylation by the catalytic site of ATP synthase accompanied by downhill movement protons through its proton channels.
Thwart is to Sabotage as Cold is to : C. Arctic
They're synonyms
Thwart and Sabotage has a very similar meaning , to prevent someone to accomplish something. The definition of Arctic is : Extremely cold
Hope this helps
