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patriot [66]
3 years ago
15

Which would not be classified as a pure substance​

Biology
1 answer:
kipiarov [429]3 years ago
3 0

Answer:

If a substance is not chemically pure, it is either a heterogeneous mixture or a homogeneous mixture. If its composition is uniform throughout, it is a homogeneous mixture.

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Luda [366]

Answer:

Coleoptera is correct! Hope this helps.

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3 years ago
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A student poured a solution of bromothymol blue indicator into three test tubes. Then he placed an aquatic plant in two of the t
olasank [31]

The question is incomplete. The complete question is - A student poured a solution of bromthymol blue indicator into three test tubes. Then, he placed and aquatic plant in two of the test tubes, as shown below. He placed a stopper on each test tube and placed them all in the dark for 24 hours. Brothymol blue turns from blue to yellow in the presence of CO2.

Which process would you expect the organisms in the test tubes to carry out-- cell respiration, photosynthesis or both? When would you expect each process to occur?

Answer:

Photosynthesis is the process of the formation of the food in case of plants in the presence of sunlight with the help of carbon dioxide, water and soil. The light energy is converted into the chemical energy.

The beaker is blue because plants uses carbon dioxide for their food preparation. When the beakers are kept in the dark place, instead of photosynthesis cellular respiration occur that made energy from the food for their survival.

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3 years ago
The Michaelis-Menten and the Lineweaver-Burk plots can be used to determine the Km and Vmax of the enzyme-catalysed reaction. Ex
NNADVOKAT [17]

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7 0
2 years ago
The digestive and excretory systems
hammer [34]

THE EXCRETORY SYSTEM

Answer: The attachment shows the nephron which is the functional unit of the kidney.

It does the work of urine formation through 3 distinct processes.

-Ultra filtration( Small molecules are forced out of the selectively permeable membrane of the glomerulus into the Bowman's capsule under regulated pressure.these molecules are from the blood in the glomerulus brought in by the afferent arteriole.

- Selective reabsorption ( Useful molecule and iron such as glucose and sodium are reabsorbed back into the blood as the filtrate flows through the tubule(nephron)

-Tubular Secretion. ( Movement of molecules not filtered by the glomerulus during the initial stage of filtration back into the filtrate through the renal capillaries.

Stella's urine sample shows the presence of large protein (ULTRAFILTRATION)

John's blood test report indicates a high toxin level ( ULTRAFILTRATION AND TUBULAR SECRETION)

Miguel's blood test shows an increase in metabolic waste( ULTRAFILTRATION AND TUBULAR SECRETION)

Janice's urine report shows the presence of vital materials ( SELECTIVE REABSORPTION).

8 0
3 years ago
16. The lateral-line of a shark is used for
creativ13 [48]

Answer: A: Detecting and locating objects and moving animals in the water

Explanation:

Its used for sensing tiny vibrations in the water

6 0
3 years ago
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