It is from the Edicaran Period
Endocytosis brings molecules in
Exocytosis takes molecules out
:)
Answer:
True
Explanation:
The calcitonin/calcitonin gene-related peptide (CALCA) gene is used to encode different peptide sequences (i.e., calcitonin hormone, calcitonin-related peptides and katacalcin) through alternative RNA splicing. These peptides have different functions. Calcitonin is a hormone mainly produced by cells of the thyroid gland, which is involved in the control of levels of calcium and phosphate in the blood. Moreover, katacalcin is a peptide synthesized from the same precursor of calcitonin (and therefore also mainly produced by cells of the thyroid gland), which is implicated in both calcium regulation and skeletal maintenance. Finally, the calcitonin gene-related peptide (CGRP) is a peptide mainly produced by sensory nerves (type Aδ fibers ), which is involved in pain pathways. The CALCA gene has attracted considerable attention from geneticists because it is specifically expressed in neuroendocrine tissues in normal conditions and abnormally induced in septic conditions (i.e., during the body's extreme response to an infection).
The five groups are fish, amphibians, reptiles, birds and mammals. In addition, we called these wild animals vertebrates, they have backbones.
Some of the characteristics they have to determine their group :
Fish : has slimy scales, use gills for breathing.
Amphibians: has moist skin, young ones use gills for breathing, older ones uses lungs and their skin.
Reptiles: has dry scales, internal fertilization and lay eggs.
Birds: has feather covering their body, has wings.
Mammals: has hair covering their body, uses lungs for gas exchange and has mammary glands for feeding the young.
Answer:
a-atmosphere
Explanation:
atmosphere is a body of gases located on a planet or other materials