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Vadim26 [7]
3 years ago
5

Which of these statements describes some aspect of facilitated diffusion?a.Facilitated diffusion is another name for osmosis.b.F

acilitated diffusion of solutes occurs through phospholipid pores in the membrane.c.Facilitated diffusion requires energy to drive a concentration gradient.d.Facilitated diffusion of solutes may occur through protein pores in the membrane.e.There is only one kind of protein pore for facilitated diffusion
Biology
1 answer:
frosja888 [35]3 years ago
5 0

Answer:

D

Explanation:

Facilitated diffusion is a form of passive transport hence no energy is required by the cell. This means that while the molecules are moving down a concentration gradient – line normal diffusion – the movement of the molecules needs to be facilitated (in this case by a transmembrane protein) either because the molecule is polar and can't pass through the hydrophobic region of the cell membrane, or the molecule is too big to passively pass through the small natural pores of the cell membrane.

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Answer:

B

Explanation:

Fan is a conduction method of energy

The heat from the coffee conventions through to the spoon and the cup and the sun is radiation heat

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Researchers discover that a north american bird species called a brown thrasher has a very similar beak structure to one of darw
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The answer would be analogous and convergent evolution. In evolutionary biology, convergent evolution is the procedure whereby creatures not carefully related, self-sufficiently evolve alike traits as an outcome of taking to familiarize to like surroundings. The beaks can be described as analogous since there is a similarity of structures that came from different origins.
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Why should we protect an entire ecosystem and not just one species?
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Which is the order of airflow during inhalation?
tigry1 [53]

Answer:

Nasal cavity, larynx, trachea, bronchi, bronchioles, alveoli.

Explanation:

The air travels through the respiratory system during inhalation in the next order:

  1. <em><u>Nasal cavity:</u></em> You inhale air into your nose.
  2. <u><em>Larynx:</em></u> The air travels down to this organ, a hollow, tubular structure that plays a key role in phonation, respiration, and deglutition.
  3. <u><em>Trachea:</em></u> (Or <em>windpipe</em>) is a wide, hollow and cartilaginous tube that connects the larynx to the bronchi.
  4. <em><u>Bronchi:</u></em> The trachea divides into two primary bronchi; they are the main passageway into the lungs.
  5. <em><u>Bronchioles: </u></em>The bronchi develop smaller the closer they get to the lung tissue and are then consider bronchioles.
  6. <em><u>Alveoli:</u></em> They are tiny air sacs located at the end of the bronchioles, which is the site of oxygen and carbon dioxide exchange in the respiratory system.

8 0
3 years ago
All of the following are regulatory functions of the endocrine system except Select one: a. labor contractions. b. development o
aleksley [76]

Answer:

c. immune functions.

Explanation:

The endocrine system is involved in the regulation of metabolic rate, body temperature (thermoregulation), tissue development and labor contractions except immune functions.

Studies have shown that no hormone has been identified as being important in the regulation of the immune system. Therefore immune functions is not a regulatory function of the endocrine system.

Although, there have been articles on the endocrine and immune system crosstalk, only a hypothesis of various proteohormones not single hormones have been discovered to act on immunocompetent cells.

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