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Anna35 [415]
3 years ago
6

What are all the correct statements

Biology
1 answer:
timurjin [86]3 years ago
3 0

A.this statement is correct since non-polar molecules diffuse easily through the semi-permeable membrane

B.this statement is false since this is diffusion, a form of passive transport that does not require ATP

C.this is false for the same reason

D.This is true since this is passive transport

E.This is false because proteins and carbohydrates can't simply pass through the phospholipid bilayer since they are big charged molecules

F.This statement is true since those are small molecules that can easily pass through the semi permeable membrane

G.this statement is false since molecules that diffuse are usually non poalr

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Can one cell be a living thing? explain
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A scientist hypothesizes that temperature affects the gender of a species of turtle. How can the scientist test this hypothesis?
Margaret [11]

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In some organisms, such as crocodiles, lizards, and turtles, gender determination is affected by temperature. In turtles, the eggs become female  when the temperature is higher, while eggs become male when temperature is less than that of required by female development.

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4 years ago
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Yeast cells are recovered from a fermentation broth by using a tubular centrifuge. Sixty percent of the cells are recovered at a
Serga [27]

Answer:

\\ \omega = 5033.22 \ rpm

Explanation:

Given that:

R_1 = 0.6\\\\R_2 = 0.95\\\\\omega_1 = 4000 \ rpm\\\\\omega_2 = ???\\\\Q_1 = 12\ l/min\\\\Q_2 =  12\ l/min

For a continuous centrifuge ; solid recovery R ∝ \frac{\omega^2}{Q}

where;

ω = angular velocity of the centrifuge in rpm

Q = flow rate

SO;

R_1 \alpha \frac{4000^2}{12}

R_2 \alpha  \frac{\omega^2}{12}

\frac{R_1}{R_2} = \frac{4000^2}{12}  ÷  \frac{\omega^2 }{12}

\frac{R_1}{R_2} = \frac{4000^2}{12} * \frac{12}{\omega^2}

\frac{R_1}{R_2} = \frac{4000^2}{\omega^2}\\\\\frac{0.6}{0.95} = \frac{4000^2}{\omega^2}

{\omega^2} = \frac{4000^2*0.95}{0.6}\\\\\\{\omega} = \sqrt{ \frac{4000^2*0.95}{0.6}}\\\\\\ \omega = 5033.22 \ rpm

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3 years ago
What might cause different soils to develop from the same kind of parent material or similar soils to form from different parent
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