The answer is D. In a
geological era, when the plants and animals
in the then environment die, they get buried
in sediments. These sediments are covered
by other sediments of another geological
time within which are the remains of dead species
of the then geological era. These sediments from different geological times have different properties hence
form visible strata that can be studied to identify the kind of environment in the then geological time. Their
fossils can also be studied to identify
the kind of species that roamed the earth during the time.
Answer:
A) Protein kinases activate enzymes by phosphorylating or adding phosphate groups to them. Protein phosphatases dephosphorylate or remove phosphate groups from enzymes, including protein kinases.
Explanation:
Protein kinases are enzymes that have the ability to modulate other enzymes (or some other proteins) by adding the phosphate group. This is known as phosphorilation process. As a result of structural change, protein can change its activity (phosphorilation usually increase the activity).
Phosphatases are enzymes with opposite function, they remove phosphate group from the protein causing different effect.
Answer:
the anther and the filament
Explanation:
The function of the male parts of flowering plants is to produce pollen grains. The pollen grains contain sperm which will fertilize the egg and create a seed to sprout the next generation of plants. The main male part is the stamen. It is divided into two parts: the anther and the filament
Answer: Motor Unit
Explanation:
Answer is a motor Unit.
A motor unit is part of the neuromuscular system that consists of a motor neuron and the skeletal muscle fibers that the axon innervates or contac. When motor units are in group they are called a motor pool and they work together. Example is the contractions of muscles, All the motor units in the muscles group together to form a motor pool and coordinate the contractions of muscles.
