Answer:
All cells share four common components: (1) a plasma membrane, an outer covering that separates the cell's interior from its surrounding environment; (2) cytoplasm, consisting of a jelly-like region within the cell in which other cellular components are found; (3) DNA, the genetic material of the cell; and (4)
Explanation:
Answer:
is caused by an abnormal infectious protein in the brain called a prion. Proteins are molecules made up of amino acids that help the cells in our body function.
Explanation:
Answer:
C. The brain controls the contraction of muscles.
Explanation:
Calcium's positive molecule is important to the transmission of nerve impulses to the muscle fiber via its neurotransmitters triggering release at the junction between the nerves. Inside the muscle, calcium facilitates the interaction between actin and myosin during contraction.
