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Triss [41]
3 years ago
9

In a study where participants rated the pleasantness of t-shirt odors, what gene alleles influenced their odor preference

Biology
1 answer:
Soloha48 [4]3 years ago
6 0

Major histocompatibility complex are the gene alleles that influenced their odor preference.  

Major histocompatibility complex (MHC), are group of genes found in mammals. Major histocompatibility complex codes for proteins that are present on cells surfaces and assist the acquired immune system to recognize foreign molecules. The primary role of MHC molecules is to attach to antigens obtained from pathogens and show them on the cell surface for recognition by the suitable T-cells.


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How does high blood pressure affect peoples moods
Mandarinka [93]

Answer:

Researchers reported that people with high blood pressure were less reactive when shown photographs and text passages meant to trigger emotions including fear, anger and happiness. This weakened response could be called "emotional dampening," said James McCubbin, a psychology professor at Clemson University in South Carolina, who led the study.

Explanation:

4 0
3 years ago
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¿Cual de los siguientes solutos que pueden estar presentes en el liquido extracelular es transportado de acuerdo al modelo de me
kolezko [41]

Complete question:

¿Cual de los siguientes solutos que pueden estar presentes en el liquido extracelular es transportado de acuerdo al modelo de mecanismo propuesto en la ilustracion?

A) Etanol.

B) Calcio.

C) Glucosa.

D) Estrógeno.

E) Oxígeno.

<em>Nota: La ilustración se encuentra como un archivo adjunto.</em>

Answer:

Ión Calcio y Estrógeno son transportados por proteinas canal a traves de la membrana.      

Explanation:

Durante el paso de sustancias al interior o exterior de la celula ocurren dos tipos de transportes. Transporte activo y pasivo. El primero requiere de energia ya que se produce en contra de un gradiente electroquímico. El segundo, por otra parte, no requiere de energía ya que sucede a favor del gradiente electroquimico.

  • El transporte activo es mediado por proteinas transportadoras que actúan como bombas transportadoras.
  • El transporte pasivo puede ocurrir por
  1. difusión simple a traves de la bicapa lipídica (sin ningunaproteina que medie su paso),
  2. difusión facilitada a traves de proteinas canales (estas proteinas tienen forma de poro hidrofílico y permiten el paso de sustancias de un lado al otro de la membrana celular sin sufrir modificaciones. Permiten el pasaje de iones actuando como canales ionicos y de hormonas o neurotransmisores),  
  3. o difusión facilitada a través de proteinas transportadoras o carriers (estas proteinas son altamente selectivas y sufren un cambio temporal en su conformación al hacer pasar una sustancia de un lado al otro de la membrana plasmatica).    

<em>La ilustración adjuntada muestra un ejemplo de </em><em>proteina de canal</em><em> facilitando el transporte de distintas sustancias.</em>

A) Etanol.  Transporte pasivo. Difusión simple a traves de la bicapa lipídica.    

B) Ion Calcio, Ca²⁺.  Transporte pasivo. Difusión facilitada a traves de proteina canal.

C) Glucosa.  Transporte pasivo. Difusión facilitada a traves de proteina transportadora o carrier.

D) Estrógeno.  Transporte pasivo. Difusión facilitada a traves de proteina canal.

E) Oxígeno. Transporte pasivo. Difusión simple a traves de la bicapa lipídica.          

7 0
3 years ago
Select the answer below that best describes how the lungs are kept free of germs and dirt from the air
tangare [24]
The Alveolar macrophages, Cilia and the mucus layer
4 0
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Why does sexual reproduction result in more genetic variation than asexual reproduction?
LuckyWell [14K]
Sexual reproduction<span> provides </span>genetic diversity<span> because the sperm and egg that are produced contain different combinations of </span>genes than<span> the parent organisms. ... Each resulting cell, or gamete, resulting from meiosis has only half the amount of DNA as the parent cell.</span>
3 0
3 years ago
In Year 1, suppose a new predator that could not differentiate between the light green and dark-green lizards was introduced on
Oksanka [162]

Answer:

C. The ratio would not show any changes in the following year.

Explanation:

Since the introduced (and only) predator can not differentiate between the tone of the lizards (dark and light), you can assume it will feed from them in an equal proportion, so the ratio between dark green and light green lizards will not be affected.

6 0
3 years ago
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