This energy is in the form of photons, which make their way slowly toward the solar surface. Outside the Sun, we can observe only those photons that are emitted into the solar photosphere, where the density of atoms is sufficiently low and the photons can finally escape from the Sun without colliding with another atom or ion.
One function of gap junctions appears to be to cellular communication the activities of like cells in a particular area.
Connexins, membrane proteins that connect nearby cells, create tiny, fluid-filled tunnels known as connexons at gap junctions. Instead of being fused together like in tight junctions, the plasma membranes of gap junctions are separated by a very small intercellular gap (space).
Ions and tiny molecules can move from the cytosol of one cell to another through connexons. In avascular tissues like the cornea and lens of the eye, the transfer of nutrients and possibly wastes occurs through gap junctions.
Some of the chemical and electrical signals that control development and cell differentiation in a developing embryo travel through gap junctions.
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Stimulation of glucose production and release into circulation to provide a quick fuel source for muscle tissue so that the body is readied for action during a stress event.
Option B.
<h3><u>Explanation:</u></h3>
Cortisol is a steroid group of hormone that is secreted from the Adrenal Cortex from the zona fasciculata. It's the middle layer of Adrenal Cortex. Cortisol helps in different functions of the body that includes the suppression of immune system, increasing the blood sugar level, gluconeogenesis, metabolism of fat, and proteins. This hormone helps in the gluconeogenesis which helps to produce glucose from non glucose sources. The primary sources include the fats and proteins and the glycogen reserve in liver and muscles. Thus increase in cortisol levels help in the retaining glucose levels in stress or hypoglycemia.
The maintenance of steady conditions inside an organism is called Homeostasis.