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Vikki [24]
3 years ago
11

Which is the correct order of developer of the human embryo ???ASAP please

Biology
1 answer:
kari74 [83]3 years ago
7 0

The initial stages of human embryogenesis.

8-cell embryo, at 3 days.

Blastocyst with an inner cell mass and trophoblast.

Trophoblast differentiation.

Histogenesis of the three germ layers.

Artificially colored - gestational sac, yolk sac and embryo (measuring 3 mm at 5 weeks)

Embryo attached to placenta in amniotic cavity.

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What type of bond occurs between the nitrogenous bases?
Kobotan [32]

Answer:

hydrogen bond

Explanation:

very strong interaction

6 0
3 years ago
Read 2 more answers
"Explain the statement that both Archaea and Bacteria have the same basic structures, but these structures are built from differ
timurjin [86]
<h2>Importance of Archaea And Bacteria </h2>

Explanation:

  1. Microscopic organisms contain peptidoglycan in the cell divider.
  2. Archaea do not.Explain the explanation that the <em>two kinds, microbes and archaea</em>, have a similar essential structures, yet worked from various synthetic parts.
  3. The archaea and two microbes have cell films and the two of them contain a hydrophobic bit.
  4. The two microorganisms and archaea have a cell divider that ensures them. it is made out of peptidoglycan, though on account of archaea.
  5. The two microscopic organisms and archaea have diverse Ribosomal RNAs (rRNA).
  6. Archea have three RNA polymerases like eukaryotes, yet microorganisms have just one. Archaea have cell dividers that need peptidoglycan and have films that encase lipids with hydrocarbons as opposed to unsaturated fats.
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4 0
3 years ago
_______ are thought to have been present before vertebrates.
Verizon [17]

Answer:

invertebrates i guess

Explanation:

hope it helped!!!

8 0
3 years ago
Sleep could be best described as a __________. a. car with the engine started, but parked and idling b. truck driving on the fre
qaws [65]

Answer:

The best answer is A) A car with the engine started, but parked and idling.

Explanation:

This mean are body still breathing and pumping blood but were not aware and cant move.

-<u><em>Hope This Helps!</em></u>

<u><em>-Justin:)</em></u>

3 0
2 years ago
State the major processes of the urinary system and describe the activity of each process.
Dennis_Churaev [7]

Answer:

The urinary system removes excess substances and waste products from the metabolism from the body through the urine, contributing to the maintenance of homeostasis, the chemical composition of the internal environment. Urine is produced in the kidneys, passes through the ureters to the bladder, where it is stored and is released into the exterior through the urethra.

The kidneys perform the main work of the urinary system comparing with the other parts of the system, acting primarily as passageways and storage areas. With the filtration of blood and the formation of urine, the kidneys contribute to homeostasis of body fluids in a number of ways, such as: Regulation of the ionic composition of blood; Maintenance of blood osmolarity; Regulation of blood volume; Blood pressure regulation; PH regulation of blood; Hormone release; Regulation of blood glucose level; Waste excretion and toxic substances.

Ureters - They are two tubes that carry urine from the kidneys to the bladder. The ureters are capable of performing rhythmic contractions called peristalsis. Urine moves along the ureters in response to gravity and peristalsis.

Bladder - The urinary bladder acts as a temporary reservoir for urine storage. It is a hollow, elastic muscular organ that in men is directly anterior to the rectum and in women, is located in front of the vagina and below the uterus.

Urethra - is a tube that conducts urine from the bladder to the outside, being lined with mucosa that contains a large amount of mucus-secreting glands. The urethra opens outwards through the outer ostium of the urethra.

8 0
3 years ago
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