Answer:
440 - 410 million years ago
Explanation:
Whatever their origins, animals may have ventured onto land early in the Cambrian. Previously scientists believed that animals did not begin to colonise the land until the Silurian (440 - 410 million years ago).
Answer:
The correct answer is B.. The enzyme is like a lock, and the substrate is like a key.
Enzymes are bioctalyst which accelerate the bio-chemical reactions taking place inside the living organisms.
Enzymes have specific region in their structure for the binding of their substrate which is called as active site. The shape of the active site of the enzyme complements the shape of the substrate.
The shape and amino acid residues of the active site provide the specificity to the enzyme for its substrate.
It can be easily explained with the help of lock and key model in which a substrate (key) perfectly docks in the active site (key hole) of the enzyme (the lock).
I think the correct answer from the choices listed above is the third option. The scientific information that most likely lead to school districts requiring vaccines would be that vaccines prevent diseases and can improve a school’s safety. Hope this answers the question. Have a nice day.
Answer:
Explained below.
Explanation:
At least three forms of force when dropping a ball on the ground are gravitational force, air resistance force and the buoyancy force as well.
→ Gravitational force is a type of force that is acting while the ball is dropping, that is the downward force which is attracting the ball towards the centre of the surface of the earth.
→ Air resistance force is the upward force that will be acting while the ball is dropping on the ground.
→ The buoyancy force is the type of force that will act when the ball will touch the ground, then due to buoyancy force, the ball will bounce.
