Endocrine gland - a group of cells that secretes substances into the blood or directly into an organ.
Differ from exocrine glands, endocrine glands have no ducts and secrete products (hormones) directly into blood.
Hormone - a substance produced by cells that helps specific groups of cells to perform specific functions. It is a product of endocrine gland which functions as chemical messengers to stimulate other cells.
Duct – a channel or tube that conveys a substance. It is part of the exocrine glands (such as salivary glands) which makes contact with surface .
The right option is abnormal
menstrual cycles
The female athlete triad is a
medical condition that is seen in physically active females. The clinical manifestations
of this condition involve three components which are; menstrual dysfunction, low
energy availability with or without disordered eating and decreased bone
density. Based on the information given above, Wendy has abnormal menstrual
cycles.
Prokaryotes. they are the oldest living organisms
Answer:
The conditions that would cause a molecule to diffuse from outside to inside of a structure is a higher concentration of that molecule outside and the presence of a semipermeable membrane that facilitates its passage.
Explanation:
The process by which a molecule passes from a place where it is more concentrated where its concentration is lower - crossing a semipermeable membrane - is called simple diffusion.
<u>Simple diffusion is a mechanism that does not require energy and responds to a concentration gradient</u>. When a molecule is more concentrated in a space it can enter the space where it is less concentrated
.
The cell membrane is an example of a semi-permeable membrane where the simple diffusion process occurs.
Learn more:
Simple diffusion brainly.com/question/1798156
Answer:
oxygen atoms come from split water molecules
Explanation:
