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Nat2105 [25]
3 years ago
5

Question 3

Biology
2 answers:
mr Goodwill [35]3 years ago
5 0
<h2>Answer:</h2>

The air we inhale is a <u>A) gaseous solution</u>.  

<h2>Explanation:</h2>

The air we breathe for our survival is the mixture of numerous gases comprising the atmosphere of the Earth. Argon, Nitrogen, Helium, Neon, Oxygen, Hydrogen, Nitrous Oxide, etc., are some of the gaseous solutions present on our planet. The gaseous solutions are not even classified as solutions rather they are addressed as mixtures.

For example, the carbon dioxide and oxygen gases are dissolved in nitrogen gas.  In gases, we cannot different the solute and the solvent with the naked eyes but we need to use some chemical methods for it.

Tanzania [10]3 years ago
4 0
The air that we breathe in is an example of solid solution
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svetoff [14.1K]

Answer: Explanation:

Sickle hemoglobin differs from normal hemoglobin by a single amino acid: valine replaces glutamate at position 6 on the surface of the beta chain. Therefore the red blood cell bends differently giving it a sickle shape

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1-5 For the following DNA sequences, replicate the DNA<br> 1. ÇATGGCCTGTAATCCAGCTCGAGTCAAGCC
Natali5045456 [20]

Answer:

The answer i believe is GTAGCT?

Explanation:

I really hope you found this helpful

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How does blood defend against pathogens and toxins
Darina [25.2K]

Blood carries immune system cells, known as white cells or leukocytes. Some examples of white cells are phagocytes and lymphocytes.

Phagocytes ingest and dissolve pathogens, as well as strange particles or dying cells.

Lymphocytes are divided into T cells, B cells, and natural killer cells (NK). B cells produce antibodies to respond to foreign cells, T cells attack pathogens using enzymes and other non-antibodies responses, while NK cells combat tumors and cells infected by viruses.

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1 year ago
The diagram shows a straight chain of glucose molecules.
KiRa [710]
The answer to your question is Starch
6 0
3 years ago
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Is the movement of water along the concentration gradient
Nuetrik [128]

Answer:

<em>- Is the movement of water along the concentration gradient: </em><em>Osmosis</em><em>. </em>

<em>- Is the use of energy to move the particles against the concentration gradient: </em><em>Active transport</em><em>. </em>

<em>- Is the movement of particles by diffusion without energy: </em><em>Simple diffusion</em><em>. </em>

<em>- Is the movement of particles along the concentration gradient: </em><em>Passive transport</em><em>.</em>

Explanation:

The mechanisms of cellular transport involve all the processes that the cell carries out to incorporate substances into its interior or send them to the extracellular space, through its semipermeable cell membrane.

<h3>- Osmosis</h3>

Is a type of transport that consists of the passage of water from a space with a lower concentration of solutes to one with a higher concentration, in order to reach equilibrium, following a concentration gradient.

The concentration gradient is given by the difference in concentration between two substances, which indicates the direction in which molecules, such as water, should move from one place to another.

<h3>- Active transport</h3>

Unlike passive transport mechanisms, which depend on a concentration gradient that determines the movement of particles, in active transport there are two characteristics that define it:

The passage of substances into the cell against a concentration gradient.

The use of energy to carry out this process.

In this case, the passage of substances through the cell membrane will be according to the requirements of the cell, or when they cannot pass through the membrane.

<h3>- Simple diffusion</h3>

According to the characteristics of the cell membrane, some substances can pass freely through it while others require special mechanisms. When a molecule is able to pass through the membrane without the use of special mechanisms or energy we speak of simple diffusion.

In a cell membrane, whose composition is by hydrophobic or non-polar lipid molecules, simple diffusion allows the passage of non-polar molecules, gases and alcohol.

<h3>- Passive transport</h3>

Refers to the mechanism of entry and exit of substances from the cell that does not require the use of energy.

The mechanisms involved in the passive transport of the cell are simple diffusion, osmosis, facilitated diffusion - which requires special conveyors or channels - and ultrafiltration, which depends on hydrostatic pressure. Examples of substances using this mechanism are lipid molecules, water and electrolytes.

Learn more:

Lipidic bilayer and cellular transport brainly.com/question/6955159

3 0
3 years ago
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