An evolutionary trend in which organisms have sensory organs and nervous tissue concentrated in their heads
The substance which is the most
direct source of the energy used by an animal cell for the synthesis of
materials is Adenosine triphosphate (ATP). ATP, made up of an adenine
nucleotide bound to three phosphates, is the molecular currency of transfer of
energy within the cell.
The reason for absence of predators in Galapagos island.
<u>Explanation:</u>
The Galapagos islands are especially remote, which means that its animals emerged free from predators. "The Galapagos hawk" was the only top predator in the Galapagos Islands and there are no predators that can take on the hawks. The hawks feed on insects, lizards, and small birds.
"Marine iguanas" the hideous and stupid animals swim, feed on algae and contribute hours basking on the rocks. Then there exist giant tortoises, they weigh as much as 250kg. Amidst the birds, some cormorants cannot fly and they have heavy little wings and there are numerous different varieties of finch. The islands do not have frogs and till humans arrived, there was no existence of mammals like rats or cats. Reptiles can go for months without feeding or dissipating, can hover there on driftwood. Frogs are killed by salt water and have no access to progress across the sea.
B! I think.. plasmids i think belong in the ektoplasm which is around the nucleus if i am correct
RNA controls genes.
Answer:
Option E, Smooth muscle contractions that move food along the esophagus.
Explanation:
Peristalsis is an involuntary movement of muscles (smooth and longitudinal) in the digestive tract to move the food from Oseophagus to other hollow tubes and stomach.
These Peristaltic waves are strong wave like smooth muscle movement in the esophagus, stomach, and intestines as the bolus of food is swallowed to process food in different digestive tract.
Hence, option E is correct