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Nana76 [90]
2 years ago
14

Explain why the intracellular and extracellular surfaces of the phospholipid bilayer are polar.

Biology
1 answer:
yulyashka [42]2 years ago
3 0

Answer:

A single phospholipid molecule has a phosphate group on one end, called the “head,” and two side-by-side chains of fatty acids that make up the lipid “tails. ” The phosphate group is negatively charged, making the head polar and hydrophilic, or “water loving.” The phosphate heads are thus attracted to the water.

Explanation:

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When studying animal behavior, the distribution of organisms within a choice chamber can be studied to identify animal preferenc
Komok [63]

Answer:

c

Explanation:

Random distribution of the Isopods should be 50/50 in A and B.

Chi-square = \frac{(O - E)^2}{E} where O = observed frequency and E = expected frequency

Chamber         O                    E             Chi-square

  A                   18                   10             \frac{(18 - 10)^2}{10} = 6.4

  B                    2                    10             \frac{(2 - 10)^2}{10} = 6.4

<em>Total Chi-square </em>= 6.4 + 6.4 = 12.8

<em>Degree of freedom</em> = 2 - 1 = 1

<em>Tabulated Chi-square</em> (α = 0.05) = 3.8415

The calculated Chi-square exceeds the critical value, hence, it is significant and not due to random.

<em>The correct option is </em><em>c</em><em>.</em>

4 0
3 years ago
Interpret the chemical reaction - what is the overall purpose of photosynthesis?
juin [17]
<h2><em>interpret the chemical reaction - what is the overall purpose of photosynthesis?</em></h2>

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<em>hope </em><em>it</em><em> helps</em>

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5 0
3 years ago
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During translation, what kind of bond is formed between amino acids?.
777dan777 [17]

Answer:

Peptide bonds

Explanation:

During translation peptide bonds are formed from the (N) to the (C) terminus by removal of water also referred to as dehydration or condensation and catalyzed by RNA referred to as a ribozyme that forms part of the ribosome.

5 0
2 years ago
In a thunderstorm 5 miles away, which would you experience first?
IRINA_888 [86]

Answer:

If we are watching the sky, we see the lightning before we hear the thunder. That is because light travels much faster than sound waves. We can estimate the distance of the lightning by counting how many seconds it takes until we hear the thunder. It takes approximately 5 seconds for the sound to travel 1 mile.

Explanation:

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Carbon dioxide, oxygen, h2o
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