Answer:
A.endometrium
Explanation:
The endometrium is the inner layer that lines the uterus. It is made up of glandular cells that make secretions. The myometrium is the middle and thickest layer of the uterus wall.
The Lock-and-key mechanism was first proposed by Emil Fischer which described as the enzymatic reactions whereby an enzyme with a single substrate binds temporarily to form a substrate complex.
The lock-and-key mechanism is usually associated with the complementary shapes of an enzyme with a single substrate, wherein the lock that is being referred to is the enzyme and the substrate is the key. One right sized substrate (key) fits into the active site (key hole) of the enzyme (lock).
The active site which is mentioned above is structurally complementary to the substrate. This is the temporary binding site on the enzymes. Just like a lock and key, the enzyme as the lock and the substrate as the key is said to fit together.
I am sure that the answer is D
A) toward the earth ...hope this hlep
To be injured by an animal with poisonous spines, you must: be the aggressor and touch the animal first.
<h3>What is the use of spines in animals?</h3>
- Spines are hard, needle-like anatomical structures found in both vertebrate and invertebrate species.
- The spines of most spiny mammals are modified hairs, with a spongy center covered in a thick, hard layer of keratin and a sharp tip.
- Spines on an animal’s body help defend it.
- They can be irritating or painful, or difficult to swallow.
- Spines are also important tools for communication, shock absorption, and rain protection.
- Animals like porcupine shoot their spines (quills) for defense. Some spines can also pass through gloves.
- To prevent attacked by an animal with poisonous spines you must remain calm and observe your surroundings.
Learn about plant spines here:
brainly.com/question/823927
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