The correct answer is D. Hope this helps :)
<span>It depends on motor proteins and micro-tubules. Motor proteins are proteins that transform chemical energy into mechanical energy which helps cell movement and they also move along a surface. Micro-tubules are also proteins and they are structural components of the cytoskeleton. They are used as structures for movement with the vesicles .</span>
Your teacher likes to copy. Found this at https://examples.yourdictionary.com/examples-of-keystone-species.html
Grizzly bears: As predators, bears keep down the numbers of several species, like moose and elk. They also carry and deposit seeds throughout the ecosystem. Bears that eat salmon will leave their dropping and the partially eaten remains that provide nutrients such as sulfur, nitrogen and carbon to the soil.
Answer:
Mutations during meiosis can often lead to disorders, diseases, etc.
Explanation:Let's say that one of the tetrads formed in the first steps of meiosis It doesn't separate and goes on.
When making gametes, some will contain the necessary amount of chromosomes while others will not
