Question

W insert Format Tools sign Layout References 12 A A A A XX A..A E Table Window Help 2 Evolution worsheet - Saved Mailings Review View E 1 1 Aalsede Abcode AaBbCcDE Aa Bbc A 12. Statement: Many of the bacterial strains that infect humans today are resistant to a wide range of antibiotics. These resistant strains were not so numerous or common prior to the use of antibiotics. These strains must have appeared or evolved in response to the use of the antibiotics Answer: Suggested change: 13. Satement: Ufe arose in the aquatic environment and later invaded land. Once animals came onto land, they had to evolve effective methods of support against gravity and locomotion in order to survive Answer: Suggested change: English (United States Focus MacBook Air

Answer 1

12.

Answer : This is considered as the Qasi Lamarckian statement. When an antibiotic is given then the particular strain of bacterias will die .But if there is a resistant gene in the bacteria against that particular antibiotic which leads to the antibiotic resistance. This leads to failure of medication therapy.

Suggested Change: Antibiotics are the agents which are used either to kill the bacteria or to stop the growth of bacteria.As a result of wide range use of these antibiotics most of the bacterias become resistant to the antibiotics.The only preventive measure to this particular issue is to use the antibiotics for the particular bacterial strain which doesnt have that resistant gene.Antibiotic resistance leads to higher cost of medicines ,increased hospital stays and increased death rate.

13.

Answer : When animals came on to land they need gravity and locomotion for surviving.Every single individual cells reqiure gravity for the growth of the cells.gravity will make us to be stable on the land and to do our work .Locomotion is also very important compared to animals for their daily purposes .hence they need to change accordingly for that.

Suggested Answer: After the entry of animals on the land they need to adjust to the gravity and locomotion for the survival. They adapted to these by making a number of variation in their composition and functions.Variation of gravitational force will make a numerous changes in them like from their metabolism to hereditary changes.In the case of locomotion they need to survive the land by getting their basic needs like food , shelter ,escape from predators. All of these leads to the survival of animals on the land .Hence according to the gravity or gravitational force and locomotion animals needs to change according to environment physically and mentally .