Answer: Homo habilis
Explanation: about 2.31 million years ago to 1.65 million years ago they existed and if An anthropologist finds a fossil that is 2 million years old it's most likely to be a Homo Habilis
Inner mitochondrial membrane hosts several enzymes required for electron transport chain. To increase the amount of energy production per mitochondria, the inner Mitochondrial membrane is folded.
<h3><u>Explanation</u>:</h3>
Mitochondria is one of the membrane bound organelles of the eukaryotic cells. It has a bilayered membrane that has the inner membrane which is selectively permeable and the outer mitochondrial membrane which is mostly permeable.
The inner mitochondrial membrane is highly folded to form the cristae. They hosts the maximum amount of enzymes in form of 4 complexes which are required for the electron transport chain. So to host maximum amount of enzyme in the membrane and to maximise the production of ATP the inner Mitochondrial membrane is folded.
Oligomycin is a type of antibiotic that binds with the F0F1 channel blocking the flow of proton thereby blocking formation of ATP. In presence of Oligomycin, the channel is blocked, leading to the increase in the proton concentration in the innermembrane place. As the maximum concentration is reached, the NADHs aren't accepted by the enzyme for oxidation and proton donation. So they accumulate in the mitochondrial matrix.
Ca+2 , the plus 2 indicates the loss of 2 electrons
Answer:
e) directional selection
Explanation:
Directional Selection:
- The type of natural selection that favors one of the extremes of the phenotype spectrum, shifting the allele frequency to one direction
- This type of selection selects against intermediate and one of the extreme phenotypes.
- In this particular case, the increasing pollution has pushed the plants to evolve better acid tolerance.
- This indicates that if the environmental conditions worsen, only the acid tolerant plants will be able to survive.
* Another example is illustrated in the image. The graph shows the shifts in allele frequency.
Answer;
Social support system
Research has consistently shown that having a good social support system is of critical importance in a person's ability to cope with stressors.
Explanation;
-Social support means having friends and other people, including family, to turn to in times of need or crisis to give you a broader focus and positive self-image. Social support enhances quality of life and provides a buffer against adverse life events.
-Research has proved that having a support system has many positive benefits, such as higher levels of well-being, better coping skills and a longer and healthier life. Studies have also shown that social support can reduce depression and anxiety.
