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Gre4nikov [31]
3 years ago
7

Does anyone know what we need to do on here?

Biology
1 answer:
Lera25 [3.4K]3 years ago
3 0

Answer:

identify the variables

Explanation:

control:type of lemon used

dependent:whether apple slice turns brown at pH>2

independent:pH value

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Which of the following reactions takes place in red blood cells in the capillaries surrounding the cells of active tissues?
Irina-Kira [14]

Answer:B

Explanation:

This reaction demonstrated Bohr effect. it takes place in the  cytoplasm  of RBC , because this is the location of the enzyme carbonic anhydrase which catalyzed it .  

The hydrogen ion and bicarbonate  are transferred out  of the  RBC into plasma. Chloride ion diffused into the RBC to neutralize drop in pH(chloride shift).

 The hydrogen ion is mobbed by haemoglobin in its buffer effect, while the carbonate is transferred to the lungs  where it is broken down, to release C02 .85% of blood C02 is transported in this form .

The CO2 released out of  the lungs , created a concentration gradient for  influx of Oxygen into the lungs. This is the significance of this reaction.

In addition, Option D which involved direct reaction of C02 with Haemoglobin to form carbaminoheamoglobin  is another reaction which takes place in the RBC. it is a reversible reaction where the C02 is transported to the lungs.10% C02 is tranported in this form,

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3 years ago
5.06 Electromagnetic Spectrum Guided Notes.
Dmitry [639]

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Answer: Wavelength

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Explanation: Frequency is the amount of time that it takes for a wave to complete once a cycle, that is, to repeat a phase. Gamma rays have the highest frequency in the electromagnetic spectrum while radio waves have the lowest.

Explanation: Frequency is indirectly proportional to wavelength. This means that the higher the frequency the smaller the wavelength and vice versa. In addition, therefore, converse to wavelength, the higher the energy of a wave, the higher the frequency and vice versa. It is calculated by dividing one (1) with the wavelength of the wave. It is measured in Hertz

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Explanation: Their basic principle of telescopes is that they collect as much light as possible from the aperture (this is why the front end is usually large diameter), and then converges this light using lenses and prisms onto a film. This gives a clear picture from which astronomical features can be clearly discerned,

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