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dimaraw [331]
3 years ago
14

The thick arrow points to which part of the chloroplast?​

Biology
2 answers:
zmey [24]3 years ago
7 0
You forgot to post the picture, therefore this question is basically useless as we would have no idea what you are talking about, which is why I'm here to claim some points.. thanks !
faust18 [17]3 years ago
4 0

Answer:

What arrow?!

Explanation:

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Animals with cephalization usually have Select one: A. radial symmetry B. only 2 germ layers C. bilateral symmetry D. a digestiv
amid [387]
C. bilateral symmetry
8 0
3 years ago
The structure of the cell membrane allows it to be selectively permeable. What is the name for the larger, brown structure in th
Anika [276]

Explanation:

B) protein channel

Lipids are composed of fatty acids which form the hydrobic tail and glycerol which forms the hydrophilic head; glycerol is a 3-Carbon alcohol which is water soluble, while the fatty acid tail is a long chain hydrocarbon (hydrogens attached to a carbon backone) with up to 36 carbons.

Their polarity or arrangement can give these non-polar macromolecules hydrophilic and hydrophobic properties. Via <em>diffusion,</em> small water molecules can move across the phospholipid bilayer acts as a semi-permeable membrane into the extracellular fluid or the cytoplasm which are both hydrophilic and contain large concentrations of polar water molecules or other water-soluble compounds. The hydrophilic heads of the bilayer are attracted to water while their water-repellent hydrophobic tails face towards each other- allowing molecules of water to diffuse across the membrane along the concentration gradient.

Transmembrane proteins are embedded within the membrane from the extracellular fluid to the cytoplasm, and are sometimes attached to glycoproteins (proteins attached to carbohydrates) which function as cell surface markers. Carrier proteins and channel proteins are the two major classes of membrane transport proteins.

  • Carrier proteins (also called carriers, permeases, or transporters) bind the specific solute to be transported and undergo a series of conformational changes to transfer the bound solute across the membrane. Transport proteins spanning the plasma membrane facilitate the movement of ions and other complex, polar molecules  which are typically prevented from moving across the membrane.
  • Channel proteins which are pores filled with water versus enabling charged molecules to diffuse across the membrane,  from regions of high concentration to regions of lower concentration. This is a passive part of facilitated diffusion

Learn more about membrane components at brainly.com/question/1971706

Learn more about plasma membrane transport at brainly.com/question/11410881

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4 0
2 years ago
(03.02 MC)
Elenna [48]

The picture is a scientific model which is used to explain the concept of the water cycle by means of pictures and descriptions.

<h3>What is a scientific model?</h3>

A scientific model is a representation which may be in form of pictures, illustrations, objects, or ideas which are used to explain a particular concept by scientists.

Scientific models are usually employed to explain either difficult to understand concepts or scarcely observable phenomena in order to enrich the knowledge and comprehension of others.

The given illustration is an example of a scientific model. It is used to explain the concept of the water cycle. By means of pictures and descriptions, the various processes of the water cycle can be fully comprehended.

Also, by means of a cyclical illustration, the model helps to explain that the water cycle is a continuous repetitive process.

In conclusion, scientific models may be in form of pictures, illustrations or objects.

Learn more about scientific models at: brainly.com/question/18603376

#SPJ1

4 0
9 months ago
ASAP HELP
Sergio [31]
They are autotrophs that go through photosynthesis. Have no true, roots, stems or leaves.
7 0
2 years ago
Infection by the human immunodeficiency virus (HIV) into a target cell is shown here. Which statements are supported by the mode
aalyn [17]

Answer:

The HIV genome is originally a RNA based genome.

Explanation:

Human immunodeficiency viruses are the one which infects human over time. The virus infects human body cells and progresses towards immune system failure which creates life threat for a patient. The disease is incurable till date but the effects can be slowed down by the medication and treatments. The disease in contagious and spreads by transfer of infected blood.

4 0
3 years ago
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