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Allisa [31]
4 years ago
6

Based on the physical appearance of the two crystal samples, which is a metal?

Biology
2 answers:
Rasek [7]4 years ago
8 0
The answer is sample A
sweet-ann [11.9K]4 years ago
5 0

it is sample A .  !!

hope it helps

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For each of the following features of nucleic acids, indicate whether it is true of DNA only, of RNA only, of both DNA and RNA,
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Answer:

Nucleic acid is one of the four major macromolecules that is present in all life forms. It includes DNA ( deoxyribonucleic acid) and RNA (ribonucleic acid). It is made up of small unit called nucleotides.

A nucleotide contains a pentose sugar that is deoxyribose in DNA and ribose in RNA, nitrogenous base that is Adenine, Thymine, Cytosine, Guanine in DNA and Adenine, Uracil, Cytosine, Guanine in RNA, and a phosphate group.

It is synthesised by a process of comlementary base pairing ( such as in double stranded DNA, A pairs with T and G pairs with C).

DNA is converted to mRNA inside the nucleus of eukaryotic cell and mRNA is then translated to protein when it moves the cytosplasm of the cell.

Thus, the correct answers are as follows-

1) Is an inherently directional molecule, with an N-Terminus on one end and a C-Terminus on the other end - true neither for RNA or DNA.

2) Contains the base adenine- True for both DNA and RNA.

3) Contains the nucleotide deoxythmidine monophosphate- True for DNA

4) Occurs only in signle stranded form- True for both RNA and DNA( such as single stranded DNA in DNA virus, and RNA in single stranded RNA in AIDS virus).

5) Is synthesized by a process that involves base pairing- True for both DNA and RNA.

6) Is involved in the process of protein synthesis in the cytoplasm of the cells in the liver- True for RNA ( particularly messenger RNA, mRNA)

3 0
3 years ago
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Which statement best describes the movement of carbon dioxide into or out
allsm [11]

Answer:

D it is taken in from the air

Explanation:

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5 0
3 years ago
Help please
Alla [95]
Using bar soaps and hand towels won't have a greater chance of making you bleed, but razor blades and toothbrushes do since people usually cut themselves when shaving and toothbrushes can make your gums bleed. 

I hope this helps.  
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What are two things found in each of the two layers of the skin
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<span>The epidermis is mainly a composition of cells called keratinocytes. Defensive cells are known as Langerhans cells and are one of the three types of specialized epidermal cells, The epidermis is bonded to the dermis. Hairs grow in the dermis and up to the epidermis. So, the dermis and the epidermis both have cells and hair. </span>
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In 1985, research by ______________ and his colleagues at leicester university, england led to the discovery that portions of th
Irina18 [472]
The answer is Dr Alec Jeffreys. <span>The genetic fingerprint and DNA profile are used by forensic science to help the police in their research work. The same technique has proved very useful in resolving litigation about paternity, for the identification of human remains in armed conflicts and for the identification of the corpses of historical figures.</span>
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