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TEA [102]
3 years ago
6

Which of these is not an accomplishment of the Apollo missions ?

Biology
2 answers:
jeka943 years ago
7 0

Answer:

b – to orbit the earth for two weeks

Explanation:

Various Apollo missions have been sent by NASA to do the scientific researches.

Apollo missions have successfully accomplished to land on moon, to study the surface on the moon and to send rovers to the moon. Yet, to orbit the earth for two weeks is still to be accomplished.

Thus, the correct answer is option b.

Taya2010 [7]3 years ago
5 0
<span>B. to orbit the earth for two weeks</span>
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assume that life on Mars requires cell potential to be 100mV, and the extracellular concentrations of the three major species ar
svetlana [45]

Answer:

Explanation:

From the information given:

The cell potential on mars E = + 100 mV

By using Goldman's equation:

E_m = \dfrac{RT}{zF}In \Big (\dfrac{P_K[K^+]_{out}+P_{Na}[Na^+]_{out}+P_{Cl}[Cl^-]_{out} }{P_K[K^+]_{in}+P_{Na}[Na^+]_{in}+ P_{Cl}[Cl^-]_{in}}      \Big )

Let's take a look at the impermeable cell with respect to two species;

and the two species be Na⁺ and Cl⁻

E_m = \dfrac{RT}{zF} In \dfrac{[K^+]_{out}}{[K^+]_{in}}

where;

z = ionic charge on the species = + 1

F = faraday constant

∴

100 \times 10^{-3} = \Big (\dfrac{8.314 \times 298}{1\times 96485} \Big) \mathtt{In}  \Big ( \dfrac{4}{[K^+]_{in}}   \Big)

100 \times 10^{-3} = 0.0257 \Big ( \dfrac{4}{[K^+]_{in}}   \Big)

3.981= \mathtt{In} \Big ( \dfrac{4}{[K^+]_{in}}   \Big)

exp ( 3.981) = \dfrac{4}{[K^+]_{in}} \\ \\  53.57 = \dfrac{4}{[K^+]_{in}}

[K^+]_{in} = \dfrac{4}{53.57}

[K^+]_{in}  = 0.0476

For [Cl⁻]:

100 \times 10^{-3} = -0.0257 \  \mathtt{In} \Big ( \dfrac{120}{[Cl^-]_{in}}   \Big)

-3.981 =  \  \mathtt{In} \Big ( \dfrac{120}{[Cl^-]_{in}}   \Big)

0.01867 =  \dfrac{120}{[Cl^-]_{in}}

[Cl^-]_{in} = \dfrac{120}{0.01867}

[Cl^-]_{in} =6427.4

For [Na⁺]:

100 \times 10^{-3} = 0.0257 \Big ( \dfrac{145}{[Na^+]_{in}}   \Big)

53.57= \Big ( \dfrac{145}{[Na^+]_{in}}   \Big)

[Na^+]_{in}= 2.70

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3 years ago
Which part of the digestive system food nutrients move into the blood by diffusion
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Answer:

Small Intestine

Explanation:

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Piper accidentally cuts her finger while chopping vegetables. Why does she feel pain? The nerves can’t transmit an action potent
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I would go with B) Nerves in the finger detect stimuli and send the message to the brain.
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3 years ago
What is the cytoskeleton of a cell? What does it do?
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Its made up of microtubules, microfilaments and intermediate filaments. They give the cell shape and organize its parts
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How does carbon enter the biotic part of the ecosystem namely plants from the atmosphere
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<span>carbon enters the biotic part of the ecosystem namely plants from the atmosphere through PHOTOSYNTHESIS  </span><span />
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