What chemical ion is responsible for initiating the contraction of a muscle fiber?

What is the difference between glucose and atp in terms of energy?

Why do scientist ask why? and how does developments in scientific thinking influence how scientific study is carried out

Give one example of homology and explain why homology is evidence for evolution.

Will robots make our life better or worse and write atleast 100 words

Which is the most basic unit of life A) organism B) cell C) eukaryote

Name the three energy roles that organisms fill in an ecosystem.

Adrenergic postganglionic neurons release the hormones norepinephrine and epinephrine. Adrenergic postganglionic neurons release the hormones norepinephrine and epinephrine. True False

Which of the following are examples of the first specialized tissues?

Which structure of the trachea prevents it from collapsing inward and obstructing the air passageway?

What is a Divergent boundary and where is located?