Answer:
Yes; this difference from bacteria is unimportant, because the many similarities between bacteria and mitochondria provide sufficient evidence in favor of the hypothesis.
Explanation:
The passage speaks about the protein synthesising ability of bacteria and mitochondria. The bacteria are single-celled microorganism and they are prokaryotic. They lack membrane bound organelles such as mitochondria. But both mitochondria as well as the bacteria has certain similarities.
The structural similarities between the cell organelle and the organism shows favourable evidence that most proteins in present-day mitochondria are made by cytoplasmic ribosomes from mRNA transcribed from nuclear genes.
Answer:
D) Children born to parents with dark skin living far away from the equator
Explanation:
Rickets is a disease condition in children which is characterized by the softening and weakening of the bones caused by the deficiency of vitamin D.
Vitamin D is responsible the absorption of calcium and calcium plays a role in the formation of stronger bones and teeth.
Children born to parents with dark skin living far away from the equator are at a risk of developing rickets. As vitamin D is majorly naturally produced in our skin on exposure to sunlight, a dark skin prevents adequate penetration of sunlight into the skin.
Also, living far away from the equator where there is little sunlight all year, complicates the issue.
In order to resolve this, such kids should be given vitamin D supplements to meet their daily needs.