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3 years ago

9

What is meant by "between

1 answer:

tangare [24]3 years ago

5 0

Answer:

C. The interaction between organisms

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A patient has wiskott-aldrich syndrome. which immunoglobulin whould the nurse expect to be low

Dafna1 [17]

Wiskott-Aldrich syndrome is linked with low immunoglobulin G (IgG) and immunoglobulin M (IgM) levels, with normal-to-high immunoglobulin E (IgE) and immunoglobulin A (IgA) levels. Though, young babies in exact may not display classic immunoglobulin irregularities because Wiskott-Aldrich syndrome is linked with attrition in immunologic functions.

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3 years ago

On early Earth, what was referred to as the "primordial soup"? a. The mixture of gasses in the early Earth's atmosphere. b. The

viktelen [127]

Considering that most soups are warm and salty The answer is B. The combination of organic compounds in warm salty water.

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3 years ago

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What happens to a plant's color in the fall? Select the two correct answers. A. The leaves become very green as more chlorophyll

Paladinen [302]

To me I think the answer is b and c

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3 years ago

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A certain buffer is made by mixing a weak acid HA and its conjugate base A–. When HA is present at a concentration of 0.5 mM and

MAVERICK [17]

Answer:The ratio of the concentrations of $HA$ and $A^-$ when the buffer has a pH of 7.02 is 0.69

Explanation:

The dissociation constant for formic acid = $K_a=1.8\times 10^{-4}$

Concentration of HA= 0.5 mM

Concentration of $A^-$ = 0.1 mM

pH = 6.16

First we have to calculate the value of $K_a$ .

Using Henderson Hesselbach equation :

$pH=pK_a+\log \frac{[A^-}{[HA]}$

Now put all the given values in this expression, we get:

$6.16=pK_a+\log (\frac{[0.1]}{0.5})$

$pK_a=6.86$

To calculate the ratio of the concentrations of $HA$ and $A^-$ when the buffer has a pH of 7.02.

Using Henderson Hesselbach equation :

$7.02=6.86+\log \frac{[A^-]}{[HA]}$

$7.02=6.86+\log \frac{[A^-]}{[HA]}$

$\frac{[A^-]}{[HA]}=1.44$

$\frac{[HA]}{[A^-]}=0.69$

Thus the ratio of the concentrations of $HA$ and $A^-$ when the buffer has a pH of 7.02 is 0.69

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3 years ago

Is a Jellyfish free-swimming for its whole life? Explain why or why not.

Keith_Richards [23]

Answer:

Jellyfish start off their life in the polyp stage. The stage we are used to seeing (e.g. the jellyfish looking stage) is called the medusa stage.

Explanation:

Look at this image and see how a jellyfish actually starts out as not free-swimming.

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3 years ago