Answer:
The questions does not have any options.
Explanation:
In this case, the possible options are:
- Organisms with more genes will likely have more mutations per generation.
- More selection of mutations can occur in a shorter period of time for bacteria that replicate each twenty minutes than for humans with a (roughly) 20-year generation span.
- Organisms vary in the proportion of DNA that is active and in the percent of loci that have multiple alleles.
- All of the choices are correct- is the correct answer.
Organisms carrying more genes may have more mutations per every generation. Bacteria which replicate by means of asexual reproduction and which are haploid, reproduce after every 20 minutes, and chances of mutation in them occurs more rapidly.
Different organisms vary in the proportion of DNA that is active and in the percent of loci that have multiple alleles.
Well, if I’m not incorrect it should be, molecule, cell, tissue, organ, organ system, organism, population, community, ecosystem, biosphere.
Answer:
its cells cannot be created or destroyed
Answer:
The correct answer is A.
Explanation:
An osteoclast is large multinucleated cell present in the bone. Its main function is bone resorption, which occur when the osteoclasts secret hydrogen ions and many enzymes. As a result, bone matrix is digested by them. The most important enzyme is the protease cathepsin K, which degrades collagen.
Cathepsin K is regulated by parathormone, calcitonin and growth factor interleukin 6.
Matrix digestion is key during <u>bone fractures</u>, because it allows the repair and remodeling of the bone. But when this action is excessive, it can lead to osteoporosis (loss of bone density).