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adell [148]
3 years ago
7

Whenever you turn the pages of a book, use your pen to take notes, or raise your hand, you know that this is possible due to you

r:?
Biology
1 answer:
Otrada [13]3 years ago
5 0
<span>Whenever you turn the pages of a book, use your pen to take notes, or raise your hand, you know that this is possible due to your SOMATIC nervous system.</span>
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Which substance on the plasma membrane helps identify chemical signals from outside the cell?
cluponka [151]

Answer:

<em><u>The correct option is A) carbohydrate chain</u></em>

Explanation:

The carbohydrate chain present in the cell membrane helps determine the characteristics of the cell and it also helps to identify the chemical signals from outside the cell. Hence, option A is correct.

Other options, like option B, is not correct because the function of the cholesterol in the cell membrane is to prevent the fatty acids from sticking together. Option D is not correct because transport proteins help some molecules to move inside the cell.

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3 years ago
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LUCKY_DIMON [66]

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Explanation:

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3 years ago
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5 Which answer best describes how
valentinak56 [21]
Yes it is C but for future reference, both A and B are referring to solids, and D is referring to a gas, hope this is helpful later!
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3 years ago
A retrovirus hijacks a cell's machinery to turn its rna into dna, which is then inserted into the cell's genome so viral protein
Doss [256]
No this virus does not follow the Central Dogma of Biology. The Central Dogma refers to the process involved in cellular replication starting from the replication of DNA, followed by transcription of DNA to RNA, and finally translation of RNA to proteins.

Viruses are special because they hijack cells and use the cell's own mechanisms in order for it replicate. Retroviruses are even more special because they go against the unidirectional flow of the Central Dogma. This is done with the use of their <em>reverse transcriptase.</em>

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Use the copy of the Periodic Table of Elements below to obtain information about each element in the Mystery Clues list. Record
Sergeu [11.5K]

Answer: nitrogen , CALCIUM , nitrogen , Carbon-14 , Mercury , Boron

Explanation:

A. nitrogen

The atomic number of nitrogen is 7. How many protons, neutrons, and electrons make up an atom of nitrogen-15? Socratic.

B. CALCIUM

 CALCIUM - I have 20 neutrons and am found in your teeth and bones

C. nitrogen

The atomic number of nitrogen is 7. How many protons, neutrons, and electrons make up an atom of nitrogen-15? Socratic.

D. Carbon-14

Carbon-14 atoms have two extra neutrons, giving them a total of 8 neutrons. Carbon-14 has an atomic mass of 14 ( = 6 protons + 8 neutrons).

E. Mercury

Mercury is a chemical element with symbol Hg and atomic number 80.

F. Boron group element, any of the six chemical elements constituting Group 13 (IIIa) of the periodic table. The elements are boron (B), aluminum (Al), gallium (Ga), indium (In), thallium (Tl), and nihonium (Nh).

3 0
3 years ago
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