Answer:
D. A nucleus
Carbon contains four electrons in its outer shell. Therefore, it can form four covalent bonds with other atoms or molecules. The simplest organic carbon molecule is methane (CH4), in which four hydrogen atoms bind to a carbon atom
Answer:
Isometric
Explanation:
Isometric contraction may be defined as the type of contraction that produces the muscle tension. No change in the angle of the skeletal joint is noticed in the isometric contraction.
The sarcomere shortens during the muscle contraction this causes the increase in the muscle tension of the muscle. The length of the muscle do not change in the isometric contraction. The isometric contraction is important for maintaining posture.
Thus, the correct answer is isometric contraction.
Number 2 one I think its correct
Hello!
The correct answer is C. We know this because it consists of an incredibly simple polypeptide chain that has a continuous pattern. The rest of the choices represent complex chains.
I hope I helped!
Shelter and underground tunnels/places to store food or sleep
