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Kobotan [32]
2 years ago
5

All vertebrate embryos have slits and

Biology
1 answer:
ElenaW [278]2 years ago
3 0

Answer:

embryonic development

Explanation:

other non aquatic vertebrates exhibit gill slits even though they never breathe through gills. These slits are found in the embryos of all vertebrates because they share as common ancestors the fish in which these structures first evolved.

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Which of the following statements about archaea are true cowan?A) They are prokaryotes.B) They lack peptidoglycan in their cell
Veseljchak [2.6K]

Answer:

All the options are true except option D.

Explanation:

Archaea are a group of prokaryotic organisms i.e. they lack a membrane bound nucleus. They are one of the the three domains of life (the other two being bacteria and eukarya). Archeans possess a cell wall like bacteria but it is not composed of peptidoglycan, like bacteria cell wall.

Archeans are generally known to be found in very severe environmental conditions, hence, they are referred to as extremophiles e.g Some are thermoacidophiles i.e. thrive in very hot and acidic environment while others are extreme halophiles i.e. thrive in salty regions. Archeans known as methanogens produce methane gas as a product of metabolism from carbon dioxide and hydrogen.

However, the domain archeae was only found to be in existence recently after the domain bacteria, hence, they are not considered to evolve before the domain bacteria.

3 0
3 years ago
Which statement regarding the hypothalamus is FALSE?
Margarita [4]

Answer:

All the options are correct regarding hypothalamus.

Explanation:

The hypothalamus is the part of the forebrain. The diencephalon is divisible into 2 parts - thalamus and hypothalamus. It regulates various functions of the body.

This is the thermoregulatory center of the body. It gives the signal to sweat during a hot environment and shiver in winter. This maintains the water balance in the body by stimulating the secretion of ADH hormone in the kidney.

Hypothalamus also has regulated anterior pituitary hormone secretion. Thus it controls the endocrine secretion of pituitary glands.

This plays an important role in hunger and thirst. The feeding habits like the licking of lips, swallowing, and salivating by seeing delicious foods is due to hypothalamic activities.

The behavioral activities of individuals influenced by the hypothalamus.  It is worked along with the limbic system of the brain. The behavioral activities include fear, punishment and sexual desire.

6 0
3 years ago
What determines the calories of a macromolecule?
Orlov [11]

Answer:

The amount of carbohydrates.

Explanation:

Carbohydrates provide the calories.

8 0
3 years ago
Which process confers long-lasting immunity against a specific organism?
sineoko [7]
"Memory Cells", are cells responsible for remembering what and how to fight off a specific pathogen. When a memory cell is produced for a specific pathogen, you are granted long lasting immunity. 
8 0
3 years ago
Which cutaneous receptors are the most numerous?
Colt1911 [192]
Pain receptors are the most numerous cutaneous receptors.

Hope this Helps!
5 0
3 years ago
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