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Paha777 [63]
3 years ago
9

External Fertilization

Biology
1 answer:
____ [38]3 years ago
5 0

Answer:

The central nervous system is perhaps one of the most important systems in our bodies. It consists of the brain and spinal cord and is responsible for controlling most of the body and mind’s functions. However, when the spinal cord, or the means of transport for these electrical nerve impulses to travel between the body and the brain, becomes hindered, interesting side effects can occur.

The spine in the human body consists of 26 bones in your back, which allows you to stand straight and bend over. But, another important job of the spine is to protect the spinal cord from being hurt. About 75 percent of cases of spinal stenos occur in the lower back, which causes a narrowing of the spine that compresses the nerve root causing pain in the back of the leg. Nevertheless, this is only one of many possible signs and symptoms that you might be suffering from spinal stenosis.

Explanation:

You might be interested in
Choose the correct statements.
Nonamiya [84]

Answer:

b. 6CO2 + 6H20 molecules are formed as a result of cellular respiration

3 0
3 years ago
En un cruce entre peces naranjas y peces grises se obtiene una generación (f1) de 50% peces grises . Realice el cruce y explique
Ilya [14]

Answer:

Uno de los progenitores es heterocigoto para color naranja (Nn) y el otro parental es homocigoto recesivo para gris (nn). Al haber una cruza entre un homocigoto recesivo y un heterocigoto, la 50% de la progenie expresa color naranja (Nn), mientras que el otro 50% expresa color gris (nn).

Explanation:

<u>Datos disponibles:</u>

  • Cruce entre peces naranjas y peces grises
  • 50% de la F1 son peces grises
  • Naranja dominante sobre gris

Podemos nombrar el alelo dominante para color naranja <em>N</em>, y al alelo recesivo  para color gris <em>n</em>.

Para que en un cruce entre dos fenotipos distintos, el 50% de la primer camada exprese uno de estos fenotipos, entonces uno de los parentales debe ser heterocigoto, mientras que el otro parental debe ser homocigoto recesivo. De esta forma 50% de la primera generación expresara uno de los fenotipos, mientras que el otro 50% expresará el otro fenotipo.

Supongamos que uno de los parentales lleva el genotipo <em>Nn</em>, y el otro parental es <em>nn</em>.

Cruce:

Parental)      Nn    x     nn

Gametas)   N    n       n    n

Fenotipos) Naranja     Gris

Cuadro de Punnett)      N           n

                            n       Nn         nn

                            n       Nn         nn

F1)  2/4 = 1/2 = 50% de la progenie tendrá genotipo heterocigoto, Nn

     2/4 = 1/2 = 50% de la progenie tendrá genotipo homocigota recesivo,    

     nn

     50% de la progenie será color naranja (Nn)

     50% de la progenie será color gris (nn)

               

3 0
3 years ago
Question 4 options:
alexandr1967 [171]

Answer:

Arctic sea

Hope it helps

8 0
3 years ago
What is the main purpose of light-dependent reactions of photosynthesis?
liq [111]

Answer:

The main purpose of light  dependent reactions of photosynthesis is to generate ATP and NADPH.

Explanation:

Photosynthesis consist of two reactions 1 light reaction 2 dark reaction .The light reaction occur in the thylaKoid of Grana to produce Adenosine tri phosphate (ATP) and NADPH

Role of ATP

ATP is an energy rich molecule which undergo hydrolysis to provide energy for Carbon di oxide fixation during dark reaction. The carbon di oxide fixation is very much important to produce glucose.

Role of NADPH

NADPH act as reducing equivalent that carry out the reduction of phosphoglyceric acid formed in the first step of light independent reaction to generate phosphoglyceraldehyde(PGALD). Some PGALD then undergo various enzymatic reaction to form glucose and rest are utilized to regenerate ribulose bis phosphate(RUBP).

7 0
4 years ago
Which of the following statements about the classification of organisms are correct?
lyudmila [28]

The answer should be all of the above, if it is not then the answer is A dichotomous key can help classify an unknown organism.

Hope this helps, if not, comment below please!!!!

7 0
3 years ago
Read 2 more answers
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