Answer:
The cornea
Explanation:
The cornea is the only part of a human body that has no blood supply; it gets oxygen directly through the air.
<span>Endocrine glands release chemical substances directly into the bloodstream or tissues of the body.The chemical substances released by the endocrine glands are known as hormones.
Exocrine glands release chemical substances through ducts to outside the body or onto another surface within the body.</span>
Answer:
The type of bone that contains no osteons, but consists of trabaculae composed of parallel lamellae is <u>spongy</u> bone.
Explanation:
Spongy bone is a type of bone tissue that constitutes the internal part of the bones, found especially in the epiphysis of long bones, vertebrae, iliac. The bone matrix is organized in the form of a bone trabaculae network, leaving spaces that are occupied by the bone marrow. Also called trabecular bone does not contain osteons (the fundamental functional unit of compact bone tissue, a cylindrical structure with a central channel surrounded by bone matrix) and it provides adequate mechanical support, it is also the most metabolically active.
Mitochondria is the powerhouse of the cell
Knowledge of basic enzyme kinetic theory is important in enzyme analysis in order both to understand the basic enzymatic mechanism and to select a method for enzyme analysis. The conditions selected to measure the activity of an enzyme would not be the same as those selected to measure the concentration of its substrate. Several factors affect the rate at which enzymatic reactions proceed - temperature, pH, enzyme concentration, substrate concentration, and the presence of any inhibitors or activators.
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