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3 years ago

Answer the questions about this food web. (true or false for each one)

Biology

2 answers:

seraphim [82]3 years ago

4 0

1.true
2.false
3.false
4.true

SpyIntel [72]3 years ago

3 0

1.True
2.False
3.Using the 10% rule. 10% of 1000 is 100. So the primary consumers would get 100. The secondary consumers would get 10% of 100. So True 10kCal. The lion would eat the primary consumer and get 10 kcal as a secondary consumer.
4.True

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How do the biotic and abiotic factors of an ecosystem interact for energy flow?

Zarrin [17]

The Sun (an abiotic factor) provides energy for producers ( a biotic factor) which use light energy to undergo the process of photosynthesis. When other consumers eat the producers they are receiving energy as well.

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3 years ago

What makes one appliance more efficient than another model of the same appliance?

My name is Ann [436]

Answer:

He makes it efficient

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3 years ago

A spheroidal bacterium with a diameter of 1 mm contains 2 molecules of a particular protein. What is the molar concentration?

creativ13 [48]

Answer : The molar concentration is, $6.35\times 10^{-18}mol/L$

Explanation :

First we have to calculate the moles of protein.

$\text{Moles of protein}=\frac{\text{Number of molecules of protein}}{\text{Avogadro's number}}$

Number of molecules of protein = 2 molecules

Avogadro's number = $6.022\times 10^{23}molecules/mol$

$\text{Moles of protein}=\frac{2\text{ molecules}}{6.022\times 10^{23}molecules/mol}=3.32\times 10^{-24}mol$

Now we have to calculate the radius.

Radius = $\frac{Diameter}{2}=\frac{1mm}{2}=0.5mm=5.0\times 10^{-4}m$

Conversion used : (1 mm = 0.001 m)

Now we have to calculate the volume.

$V=\frac{4}{3}\pi r^3$

$V=\frac{4}{3}\times 3.14\times (5.0\times 10^{-4}m)^3$

$V=5.23\times 10^{-10}m^3=5.23\times 10^{-7}L$

Conversion used : (1 m³ = 1000 L)

Now we have to calculate the molar concentration.

$Concentration=\frac{\text{Moles of protein}}{\text{Volume}}$

$Concentration=\frac{3.32\times 10^{-24}mol}{5.23\times 10^{-7}L}$

$Concentration=6.35\times 10^{-18}mol/L$

Thus, the molar concentration is, $6.35\times 10^{-18}mol/L$

4 0

3 years ago

Which of the following is FALSE about protein molecules?

Ludmilka [50]

B. their fuction is a result of their shape and folding

7 0

3 years ago

1)The picture is an aerial view of what and what type boundary forms this feature?

melamori03 [73]

Answer:

The correct answer is - aerial view of the fault line of San Andreas which represents a transform or strike-slip type of boundary.

Explanation:

The picture is given in the question is an aerial view of the fault line of San Andreas.

A fault is a planar break or intermittence in a volume of rock across due to rock-mass movement that leads to significant relocation or displacement. In San Andreas, the faultline represents the transform or strike-slip type of boundary.

Observation:

A complex zone of crushed and broken rock

Many smaller faults branch

5 0

3 years ago