Answer:
DNA is found in the nucleus of a cell in two different forms, depending on whether or not the cell is going through mitosis (cell division). When a cell is not going through mitosis, DNA is in a long, loosely coiled form called chromatin.
Explanation:
Enzymes are <u>biological catalysts</u>
Answer:
Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium.
Explanation:
Answer:
The hypothalamus plays ahuge role in the endocrine system. It is responsible for maintaining your body's internal balance of temperature.
When your hypothalamus senses that you're too hot, it sends signals to your sweat glands to make you sweat and cool your temperature.
When the hypothalamus senses that you're too cold, it sends signals to your muscles that make your shiver and create warmth, rising your temperature.
