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pogonyaev
3 years ago
15

HELP PLEASE! Why might a scientist repeat experiment if she did not make a mistake in the first one

Biology
1 answer:
trasher [3.6K]3 years ago
4 0

Answer:

i believe its B but i might be mistaken.

Explanation:

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Where does the energy for human metabolism come from
SVETLANKA909090 [29]

Answer:

From food

Explanation:

Food energy is a chemical energy used by humans through the process of cellular respiration. Food contain macromolecules such as lipids, proteins, carbohydrates, water, vitamins, and minerals that are necessary for the human metabolism and they are broken down and used by the series of metabolic steps (glycolysis, Krebs  cycle, electront transport chain and oxidative phosphorilation). Digested macromolecules should be used either as a source of energy or as building blocks for the cell.

At the end of catabolic processes within an organism food energy is transformed into energy usable by the cell-ATP.

5 0
3 years ago
Explain your age in relative dating terms. Use at least 3 different
IceJOKER [234]

Answer:

i cant really help you here i dont know your information

Explanation:

4 0
3 years ago
The chemical weathering of rocks at the Earth's surface releases _______ into the biosphere.
Molodets [167]
Nitrogen. Rocks have nitrogen in them.  But just to be sure you should also just look it up to see if I am right. 
8 0
3 years ago
¿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
6. what is the approximate weight in kd of the band that is unique to crab muscle protein and is not found in abundance in fish?
xenn [34]

75Kda is the approximate weight of the band that is unique to crab muscle protein and is not found in abundance in fish.

An incredibly complex, naturally occurring molecule known as a protein is made up of amino acid residues connected by peptide bonds. All living things contain proteins, which are the building blocks of numerous vital biological substances like enzymes, hormones, and antibodies.

Lack of protein can result in muscle mass loss, which reduces strength, makes it more difficult to maintain balance, and slows metabolism. When your cells don't receive enough oxygen, it can also cause anemia, which makes you exhausted.

While an excess of amino acids is often eliminated, an excess of protein is typically retained as fat. Over time, this may result in weight gain, especially if you try to boost your protein consumption while consuming too many calories.

To learn more about protein please visit-
brainly.com/question/13734713
#SPJ4

3 0
1 year ago
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