Answer:
to organize the eras and periods of major events of fossils
Ans 2. On a human body, dorsal refers to the back portion of the body.
Ans 3. On a human body, ventral refers to the front part of the body.
Ans 4. Anterior is the front of a structure, or a structure found toward the front of the body.
Ans 5. Situated at or toward the hind part of the body.
Ans 6. the upper part of the human body, or the front or upper part of the body of an animal, typically separated from the rest of the body by a neck, and containing the brain, mouth, and sense organs.
Ans 7.It separates the outer ear from the middle ear. When sound waves reach the tympanic membrane they cause it to vibrate. The vibrations are then transferred to the tiny bones in the middle ear. The middle ear bones then transfer the vibrating signals to the inner ear.
Answer:
Sugar molecules do NOT provide all the elements needed to make the four types of macromolecules.
Explanation:
This is because proteins, and amino acids need more types of elements than carbohydrates and lipids do. In nucleic acids, the elements are carbon, hydrogen, oxygen, nitrogen, and phosphorus. Notice that sugar molecules do not have either nitrogen or phosphorus. This same principle applies to proteins, which the elements of it are carbon, hydrogen, oxygen, and nitrogen.
Answer:
Enzymes allow many chemical reactions to occur within the homeostasis constraints of a living system. Enzymes function as organic catalysts. ... By bringing the reactants closer together, chemical bonds may be weakened and reactions will proceed faster than without the catalyst.
Explanation:
