1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Mama L [17]
2 years ago
14

The embryonic period begins with ____ and lasts until the _____ week

Biology
1 answer:
Effectus [21]2 years ago
3 0

The stage runs from the 5th through the 10th week of pregnancy

The first two weeks after conception are known as the germinal stage, the third through the eighth week is known as the embryonic period, and the time from the ninth week until birth is known as the fetal period.

<h3>What is Embryonic period ?</h3>

Approximately four weeks after conception, the neural tube forms. This tube will later develop into the central nervous system including the spinal cord and brain.

  • The neural tube begins to form along with an area known as the neural plate.

  • Each layer gives rise to specific tissues and organs in the developing embryo thus, the correct sequence is: Zygote --> Morula --> Blastula --> Gastrula --> Embryo.

Learn more about Embryonic period here:

brainly.com/question/4209863

#SPJ4

You might be interested in
Name and describe several factors limiting the spread of nonvascular plants such as liverworts, hornworts,
Nana76 [90]

Answer:

a moss, liverwort, or hornwort; a nonvascular plant that inhabits the land but lacks many of the terrestrial adaptations of vascular plants. Depends on water for reproduction

Explanation:

4 0
4 years ago
Which of the following is a distinction between the Krebs cycle in eukaryotes and prokaryotes?
Flauer [41]

Answer:

C. The process occurs in the mitochondria of Eukaryotes.

Explanation:

  • In eukaryotes: glycolysis takes place within cytosol, Krebs cycle within mitochondrial matrix & ETC within inner mitochondrial membrane. Prokaryotes undergo binary fission(only cytokinesis) & conjugation.
  • Prokaryotes undergo binary fission(only cytokinesis) & conjugation. Eukaryotes perform mitosis, meiosis(both karyokinesis and cytokinesis).

Therefore in prokaryotic cells, the citric acid cycle occurs in the cytoplasm; in eukaryotic cells, the citric acid cycle takes place in the matrix of the mitochondria.

Acetyl-CoA reacts in the first step of the eight step sequence of reactions that comprise the Krebs cycle, all of which occur inside mitochondria of eukaryotic cells. While the Krebs cycle does produce carbon dioxide, this cycle does not produce significant chemical energy in the form of adenosine triphosphate (ATP) directly, and this reaction sequence does not require any oxygen. Instead, this cycle produces NADH and FADH2, which feed into the respiratory cycle, also located inside of the mitochondria. It is the respiratory cycle that is responsible for production of large quantities of ATP and consumption of oxygen. In addition, the respiratory cycle converts NADH and FADH2 into reactants that the Krebs cycle requires to function. Thus, if oxygen is not present, the respiratory cycle cannot function, which shuts down the Krebs cycle. For this reason, the Krebs cycle is considered an aerobic pathway for energy production.

Hope this helps!

If you have any queries please ask.

8 0
3 years ago
Much of the lost energy is lost in _____ *
Vsevolod [243]

Answer:

Much of the lost energy is lost in the form of heat.

Explanation:

The second law of thermodynamics indicates the that during the conversion of energy the major part of it is lost in the form of heat. Moreover, the sencond law also states the fact that the entropy (which is a measure of randomness) in a isolated system cannot decrease.

3 0
3 years ago
Which of the following accurately identifies the chemical basis of Chargaff's rule?
sergiy2304 [10]

Answer:

The chemical basis of Chargaff"s rule is the bonding properties of  the DNA bases.

Explanation:

According to the Chargaff"s rule in a DNA molecule the total number of purine bases are equal with the total number of pyrimidine bases  that means

   Adenine +Guanine=Thymine +Cytosine

In simple words the rule is based on the 1:1 ratio of both purine and pyrimidine bases.

6 0
3 years ago
How big was the astroid that hit the earth
konstantin123 [22]

Answer:

It was 11 to 81 kilometers (6.8 to 50.3 miles) in diameter

Explanation:

brainliest???

6 0
3 years ago
Read 2 more answers
Other questions:
  • The function of the mitotic cell cycle is to produce daughter cells that __________. (etext concept 12.1)
    8·1 answer
  • In photosynthesis, what gives energy to the electron moving through the electron transport chain?
    14·2 answers
  • The common cold can be transmitted through a virus left on a door handle by an infected person. this mode of transmission is cla
    7·1 answer
  • A loose pile of rocks and soil travels in a single large mass. The mass moves a short distance downhill.
    6·2 answers
  • Most types of communication between cells utilize ________ the exchange of cytosol between the cells the movement of the cells c
    8·1 answer
  • Why are scientists concerned about species loss if extinction is a natural process
    8·1 answer
  • (20 POINTS) What biological macromolecule is made up of monomers like the one shown below?
    9·2 answers
  • Describe the parts of an ecosystem found in estuaries. Remember, ecosystems include living and nonliving things.
    13·1 answer
  • Which best describes a gene?​
    10·2 answers
  • only allowing the most experienced and well-trained staff to perform research with biohazards is an example of what type of cont
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!