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Mnenie [13.5K]
2 years ago
9

Drag and drop the characteristics of each test into the appropriate test.​

Biology
1 answer:
serg [7]2 years ago
7 0

The characteristics of each test include:

<u>Benedicts test:</u>

  • A positive result indicates reducing sugar.
  • A positive result is green to orange.

<u>Iodine test:</u>

  • A positive result indicates starch
  • A positive result is a blue-black.

<u>Dische diphenylamine test:</u>

  • A positive result indicates DNA.
  • A positive result is blue.

<u>Biuret test:</u>

  • A positive result indicates proteins.
  • A positive result is violet.

<u>Sudan 4 test:</u>

  • A positive result indicates lipids.
  • Positive result forms red droplets.

<h3>What are the effect of the test? </h3>

When carbohydrate solution is heated with Benedict's reagent, the reducing sugars will reduce the copper ions to orange in color.

Potassium iodide reagent is added to the solution for testing the presence of starch. The iodine then goes inside the coil of starch causing a blue to black color

Learn more about iodine test on:

brainly.com/question/1698910

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3 years ago
Epinephrine has to cross the cell membrane to bind to its receptor in the cytoplasm. True or False
Vinil7 [7]

Answer:

The statement is false.

Explanation:

Epinephrine (also known as adrenaline) is a hormone and a neurotransmitter produced by the adrenal glands, it helps to regulate cellular energy metabolism and increases the heart rate.

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Why are methane hydrates so difficult to extract from the seafloor?
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8 0
3 years ago
What do you call the study of the connections between stress, the body's immune system, and illness?
Monica [59]
The correct answer is Psychoneuroimmunology.
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3 years ago
Turgor pressure is the pressure exerted on a plant cell wall by water. When wilted plants are placed in water, they demonstrate
Rus_ich [418]

Answer: When wilted plants are given water, it enters the cell generating turgor and giving a firmer appearance, and this water is stored in the vacuoles.

Explanation:

Turgor is a phenomenon in plant cells in which the cell expands due to the pressure exerted by the fluids and also by the cell content on the walls. It is related to osmosis, since the external pressure is usually very high and this internal pressure dilates the cell as much as the elasticity of the membranes allows. <u>Then, the cells swell by absorbing water, tensing the membranes because of the pressure against them.</u> When the fluid exerts outward pressure on the cell wall it is called turgor pressure.  Whereas, the inward pressure exerted on the cell contents by the stretched cell wall is called wall pressure. Generally, both pressures, turgor pressure and wall pressure, are counterbalanced and balanced.

So, this pressure of turgor facilitates the elongation of the cells in the plant, and also, the cells use this phenomenon to regulate the transpiration through the opening and closing of the stomach.

Thereby, the turgor of a living cell is influenced by three primary factors:

  • An adequate supply of water.
  • The formation of osmotically substances.
  • A semi-permeable membrane.

Vacuoles are organelles bounded by a single membrane and present in plant and fungal cells, and where water is stored. Plant cells control their turgor pressure through the movement of water into or out of vacuoles. When wilted plants are given water, it enters the cell generating turgor and giving a firmer appearance, and this water is stored in the vacuoles.

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3 years ago
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