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Nutka1998 [239]
2 years ago
9

A girl holds her breath for 30 seconds, breathes out, and then breathes in. Compared with the air she breathes out, the air she

breathes in contains less
A) carbon dioxide and water vapour
B) nitrogen and water vapour.
C) oxygen and carbon dioxide.
D) oxygen and nitrogen.​
Biology
1 answer:
Burka [1]2 years ago
6 0
It’s most likely answer b.
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) You treat some cells with a proteolytic enzyme that is too large to penetrate the cell membrane (Set 1). Another group of cell
Advocard [28]

Answer:

Proten W

Explanation:

SDS-PAGE gel is a method used for the separation of proteins in which proteins are separated based on their length (smaller proteins move faster through the gel, due to less resistance).

When treated with proteolytic enzymes, proteins are cut and become short fragment. This means that the fragments formed after the use of proteolytic enzymes, will move faster and thus, migrate a longer distance. Proteolytic enzymes in Set 2 cells will act only on plasma membrane proteins (because they cannot penetrate), while in Set 2 they will act on both, plasma membrane and interior proteins. Control group will have only the large fragments (not treated with enzyme).

Protein W travels the same distance on a gel of proteins from Set 1 and Set 2, but different than control group. It means that the proteolytic enzyme worked the same on Set 1 and Set 2.

3 0
3 years ago
Ritika observes that her father before storing the grains always dries them
Lunna [17]
D so that bacteria doesnt multiply in the grains since moisture favours them
7 0
2 years ago
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Un instructor desea preparar un experimento sobre movimiento armónico simple. Sólo dispone de una masa de 2 kg pero tiene una co
Sergeeva-Olga [200]

Answer:

Constante de resorte, k = 19.745 N/m

Explanation:

<u>Dados los siguientes datos;</u>

Masa, m = 2 kg

Periodo, T = 2 segundos

Para encontrar la constante del resorte, k;

Period, \; T = 2 \pi \sqrt {\frac {m}{k}}

Dónde;

  • T es el período.
  • m es la masa del objeto.
  • k es la constante del resorte.

Haciendo k el tema de la fórmula, tenemos;

k = \frac {(2 \pi )^{2}m}{T^{2}}

Sustituyendo en la fórmula, tenemos;

k = \frac {(2 * 3.142)^{2} * 2}{2^{2}}

k = \frac {6.284^{2} * 2}{4}

k = \frac {39.49 * 2}{4}

k = \frac {78.98}{4}

<em>Constante de resorte, k = 19.745 N/m</em>

3 0
3 years ago
39. (1) A functional protein would contain the information contained within which of the following regions of DNA?
yuradex [85]
The best and most correct answer among the choices provided by your question is the second choice.
<span>
Introns are functional proteins that would contain the information contained within which of the following regions of DNA.</span>

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
6 0
3 years ago
What abiotic factor would likely affect humans directly
Zigmanuir [339]
Probably water. Abiotic means not living, such as sunlight or water. 
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3 years ago
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