Because the environment is faster then the squrrel has to find stuff for the nest and a safe spot
Peptide hormones are generated in the endoplasmic reticulum. Moreover, steroid hormones are generated in the endoplasmic reticulum and mitochondria.
<h3>What are peptide and steroid hormones?</h3>
Peptide hormones are hormones composed of amino acids, whereas steroid hormones are composed of lipids.
Peptide hormones are generated in the ER and then transported to the Golgi apparatus to be included in secretory vesicles for secretion.
Steroid hormones aren't stored in secretory vesicles and are transported by using serum proteins in the blood.
Learn more about peptide hormones here:
brainly.com/question/4678959
Glycolysis is the first stage of cellular respiration that occurs in the cytoplasm of animal cells. It is the only stage that occurs outside of the mitochondrion.
As electrons move along the chain, hydrogen ion are pumped from the stroma of the chloroplast into thylakoid lumen. these leads to creation of proton gradient in thylakoid lumen with the potential energy that will be used to synthesize ATP by enzyme ATPase in the process referred to as rotational catalysis. both chloroplast and mitochondria use electron transport chain to pump protons across the membrane and both enzyme ATPase to produce ATP using proton gradient created in the process of transport of hydrogen ions. the main existing between the electron transport chains of chloroplast and mitochondria is the initial source of energy. chloroplasts obtain their energy from sunlight whereas mitochondria obtain theirs from organic molecules.
