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ss7ja [257]
1 year ago
12

Sample of blood is spun in a test tube so that red cells fall to the bottom and percentage of rbcs is taken:________

Biology
1 answer:
riadik2000 [5.3K]1 year ago
5 0

A blood sample is spun in a test tube until the red cells settle to the bottom, and the percentage of RBCs is calculated: hematocrit.

<h3>What is Hematocrit?</h3>
  • The hematocrit, also known by several other names, is the volume percentage (vol%) of red blood cells (RBCs) in blood, measured as a part of a blood test.
  • The measurement depends on the amount and size of red blood cells. It's normally 40.7–50.3% for males and 36.1–44.3% for females.
  • It is one of the components of a person's complete blood count, along with hemoglobin concentration, white blood cell count, and platelet count.
  • Because the purpose of red blood cells is to transport oxygen from the lungs to body tissues, the hematocrit—the red blood corpuscle volume percentage—of a blood sample can be used to determine its ability to deliver oxygen.
  • Too high or too low hematocrit levels can indicate a blood disease, dehydration, or other medical conditions.
  • An abnormally low hematocrit may suggest anemia, a decrease in the total amount of red blood cells, while an abnormally high hematocrit is named polycythemia. Both are potentially life-threatening disorders.

Therefore, a blood sample is spun in a test tube until the red cells settle to the bottom, and the percentage of RBCs is calculated: hematocrit.

To learn more about Hematocrit:

brainly.com/question/13739588

#SPJ4

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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
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Elza [17]

Answer:

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Explanation:

Took the test and got it right

8 0
3 years ago
What letter represents tRna
AleksAgata [21]

Answer:

F

Explanation:

tRNA are the RNA molecules that help decode the mRNA strand. On one end, They contain an anticodon which helps recognize the correct pairs in mRNA and on other end they contain amino acid. In this picture, letter F has both of these therefore it is tRNA.

7 0
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Which of the following natural resources is considered renewable?
lbvjy [14]
Wood is a renewable resource!
4 0
4 years ago
A hiker finds a smooth, rounded pebble along the shore of a stream that is flowing down from a mountain.
Bess [88]

Answer: B

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7 0
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