Blood cells carry oxygen to the rest of the cells in the body, and hemoglobin can help it do so. But in order for the hemoglobin to be effective enough, the blood cell has to be a certain kind of shape.
<span>Keep in mind that muscle cells don't carry oxygen and that they have different structure which helps in flexing and moving around only. </span>
Answer:
Animalia
Explanation:
This is the animal kingdom, and animals do not have cell walls, only cell membranes. All other mentioned kingdoms do or might have cell walls.
Answer: D. Digestion increases as the volume of the enzyme increases.
Explanation:
Enzymes speed up reactions by reducing the activation time of a reaction. If there are more enzymes therefore, the reaction will move faster.
Pepsin is an enzyme that prefers acidic conditions so it can work with dilute HCL. It can also work in temperatures of 40 °C without getting denatured. As more Pepsin is added therefore, the reaction will move faster and digestion will increase.
Even a large tapeworm cannot be seen with the naked eye and is therefore still within the realm of microbiology
Amount of wear, and how long they are may contribute with age and maybe even coloration and pigment.
