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Gnom [1K]
4 years ago
11

The eastern meadowlark and the western meadowlark are two closely related bird species. the two species avoid interbreeding beca

use they have different mating songs. this is an example of -
Biology
2 answers:
forsale [732]4 years ago
6 0

The answer is behavioral isolation

sineoko [7]4 years ago
4 0
The answer is behavioral isolation
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What structural changes happen in abnormal prion proteins?
Mila [183]

Answer:

Explanation:

The normal form of the prion protein PrP (shown here) is found on the surface of nerve cells, but when it changes into its misfolded form, it aggregates into long fibrils that clog up the normal functioning of the brain.

6 0
4 years ago
Select the endocrine organ from the drop-down menu that matches with its hormone.
Papessa [141]

Answer: The options were missing, but the endocrine organs that secret each gland are:  

Pituitary gland: Thyroid-stimulating hormone

Pituitary gland: Adrenocorticotropic

Hypothalamus: Gonadotropic

Pituitary gland: Prolactin

Pituitary gland: Growth hormone

Thyroid gland: Thyroxine

Thyroid gland: Calcitonin

Thyroid gland: Triiodothyronine

Hypothalamus: Antidiuretic

Hypothalamus: Oxytocin

Adrenal gland: Glucocorticoids

Adrenal gland: Mineralocorticoids

Adrenal gland: Epinephrine

Pineal gland: Melatonin

Thymus gland: Thymosins

Pancreas: Insulin

Pancreas: Glucagon

Explanation:

  • The pituitary gland, also known as the hypophysis, produces the thyroid-stimulating hormone, the adrenocorticotropic, prolactin, and growth hormone. The hypophysis has two parts, the anterior one and the posterior one. The anterior one secretes these hormones thanks to the action of hormones that comes from the hypothalamus.
  • The hypothalamus, which is a gland that is in the brain, produces:

gonadotropic, antidiuretic, and oxytocin. Once produced, they are stored and secreted by hypophysis. In this case, these hormones are in the other portion of the hypophysis, the posterior part. The hormones act in the reproductive system.

  • The thyroid gland, which is in the neck, produce and secretes:

thyroxine, calcitonin, and triiodothyronine. The calcitonin controls calcium concentration, while the thyroxine and triiodothyronine impact the cells' metabolism.

  • The adrenal gland is above the kidneys. It secretes Glucocorticoids, Epinephrine, and Mineralocorticoids. The mineralocorticoids regulate the concentrations of water and salt in our body; glucocorticoids have many functions, one is fighting inflammation; lastly, epinephrine, also known as adrenaline, is released in a fight or flight reaction.
  • The pancreas is an organ and a gland. As a gland, it secretes glucagon and insulin to regulate the concentration of glucose in the blood.
  • The pineal gland is on the brain. This gland secretes melatonin, which is a hormone that helps us to sleep.
  • The thymus gland is in the chest, and it produces a hormone called thymosin. This hormone helps in the production of leucocytes, which the thymus produces.

8 0
3 years ago
Do animals have the right to a certain quality of life?
Bingel [31]

Explanation:

All Animals have EVERY right to a good quality of life! It is humans with a typical human arrogance that decide who lives, who dies, who is food and who is not and how they will live and be killed. We even have Animal Protection laws for dogs, cats and “pets” and farm animals are treated like dirt, having very few protections! If you did to your dog what you do to pigs you would go to jail! Discrimination and arrogance taken to the nth degree! Since humans subject Animals to the existence humans choose and nobody ever asked a cow, a pig, a hen or any other animal how they want to live their life I think it can qualify as “Slavery”.

6 0
3 years ago
Which best describes them structure of a dna molecule
frutty [35]

The answer is C. a double helix  


5 0
3 years ago
Read 2 more answers
Witch came first the chicken or the egg
4vir4ik [10]

The egg must've came first, due to evolution =)

4 0
3 years ago
Read 2 more answers
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