Answer:paracrine
Explanation:glands are specialized tissues that secrete specific chemicals substances.these substances may be enzymes,hormones or lubricating fluid.glands secretes their their products through several mechanisms.some involve the use of ducts ,while others do not.
In paracrine secretion,the secretory products reach their target cells by diffusion through the extracellular space or adjacent connective tissue.
Paracrine secretion do not use ducts.
Similar to paracrine is the endocrine ,in which the secretory products goes through the basal lamina ,into the underlying connective tissue and into the vascular syatem.they too do not use ducts
Crossing-over is the exchange of genetic material between homologous chromosomes. It results in new combinations of genes on each chromosome. When cells divide during meiosis, homologous chromosomes are randomly distributed to daughter cells, and different chromosomes segregate independently of each other.
Answer:
D, form rings and chaines i think
Explanation:
This allows the Carbon to form long chians with elements such as hydrogen and phosphorus, etc, used some info from this site
https://courses.lumenlearning.com/wm-nmbiology1/chapter/carbon-and-carbon-bonding/
if my answer helps please mark as brainliest.
Answer: ionotropic; metabotropic
Explanation:
A receptor can directly open the channel and exerts an ionotropic effect. The ionotropic effect takes place by the help of ionotropic receptors. These receptors are membrane bound receptor proteins which responds by the bonding of the ligand.
Due to ligand binding the channel opens and allows the movement of ions into the cells which helps in either increasing or decreasing the action potential.
The receptors can also bind to the ligand and produce metabotropic effect which means by the second messenger.
Answer D) : from testing the starch by iodine
