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Flauer [41]
3 years ago
6

A food chain is defined as a. a quantitative measure of all energy flow within an ecosystem b. all energy flow within an ecosyst

em c. one sequence of energy flow within an ecosystem d. a quantitative measurement of energy flow through one sequence of an ecosystem
Biology
1 answer:
Ostrovityanka [42]3 years ago
6 0

Answer:

Explanation:

b.all energy flow within an ecosystem

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Consider a cell in which Cl- distributes passively across the membrane according to the membrane potential. The resting membrane
UNO [17]

Answer:

1000 mM

Explanation:

Using V = -60 mV㏒₁₀[K/K'] where V = membrane potential = -60 mV, K = intracellular concentration = unknown and K' = extracellular concentration = 100 mM

So, V = -60 mV㏒₁₀[K/K']

-60  mV = -60 mV㏒₁₀[K/K']

dividing both sides by -60mV, we have

-60  mV/-60 mV = ㏒₁₀[K/K']

㏒₁₀[K/K'] = 1

taking antilogarithm of both sides, we have

[K/K']  = 10¹

multiplying both sides by K', we have

K = 10K'

K = 10 × 100 mM

K = 1000 mM

So, the intracellular Cl- concentration is 1000 mM

4 0
2 years ago
What do scientists use to mark boundaries in the geologic time scale?
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Era is used to mark the boundaries of geological time scale by using radio carbon dating technique.

Explanation:

Geological time starts with Precambrian time.

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Era is further divided into periods.

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