Which elements do proteins contain

1 answer:

Taya2010 [7]3 years ago

4 0

Proteins are made of carbon, hydrogen, oxygen, and nitrogen (CHON). Nucleic acids such as DNA and RNA contain carbon, hydrogen, oxygen, nitrogen, and phosphorus (CHON P). The body also needs trace amounts of other elements such as calcium, potassium, and sulfur for proper functioning of muscles, nerves, etc.

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A murder has occurred, and you are asked to help solve it. The police bring you a sample from the crime scene of what they belie

Jobisdone [24]

Answer:

c) probably a mixture of DNA and RNA.

Explanation:

DNA and RNA are the two types of nucleic acids present in cells. DNA or deoxyribose nucleic acid is composed of four type of bases ( adenine, thymine, guanine and cytosine ), deoxyribose sugar and phosphate group. RNA or ribose nucleic acid is composed of four types of bases ( adenine, uracil, guanine and cytosine), ribose sugar and phosphate group.

Here, the sample had adenine which could be either from DNA or RNA. Thymine is from DNA. Ribose sugar is from RNA and uracil is from RNA. Hence, the sample has a mixture of DNA and RNA.

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Dna damage can occur as a result of exposure to chemicals or ultraviolet radiation. what happens during nucleotide excision repa

NeTakaya

Dna damage can occur as a result of exposure to chemicals or ultraviolet radiation. This is what happens during nucleotide excision repair of damaged dna. A multienzyme complex crosses the DNA in search of distortions in the double helix, once located, the phosphate skeleton of the affected chain is cut on both sides of the altered region, a helicase eliminates the oligonucleotide resulting from digestion, the "Gap" "is filled with a DNA polymerase and a ligase.

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4 years ago

A fuel used in a nuclear power plant is _____.<br> uranium<br> coal<br> oil<br> gas

ratelena [41]

The fuel used in nuclear reactors is commonly uranium. Its unstable nature means that when it is hit with an electron it splits into two new atoms, one of which is Krypton. In the process of splitting large amounts of energy is released. This energy is used to heat water to produce steam, the steams rising energy is used to turn a turbine which produces the electric output of nuclear power stations.

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You isolate an organism from a water sample and test it with a catalase test and grow it in thioglycollate medium. The results s

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Answer: The most likely oxygen classification is OBLIGATE AEROBIC ORGANISM.

Explanation: Most medically important bacteria can be grown artificially in the laboratory provided the atmospheric conditions and temperature are correct and the culture medium used contains the required nutrients.

The thioglycollate medium is used to differentiate oxygen requirements in an isolated organisms. While catalase test is used to differentiate catalase producing from non-catalase producing organisms.

Differences in the effect of oxygen on bacterial growth provide a further way of classifying bacteria:

● OBLIGATE AEROBES, which require free oxygen to grow,

● obligate anaerobes, which are unable to grow in free oxygen,

● facultative anaerobes, which can grow in conditions in which oxygen is present or absent,

● microaerophiles which grow best in conditions of reduced oxygen concentration.

The most likely oxygen classification is OBLIGATE AEROBIC ORGANISM because from the result of the test carried out on the isolated organisms,

--> The organism is catalase positive as it was able to breakdown hydrogen peroxide to oxygen and water( bubbling after the addition of hydrogen peroxide confirmed it as positive). Catalase is an enzyme produced by all aerobic organisms.

--> while in the thioglycollate medium the organism grew at the top of the test tube in order to absorb maximal amount of oxygen.

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Which of the following is true of a eukaryotes cell in a multicellular organisms?

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A Eukaryotic cell contains a nucleus; more than one chromosome and is typically a multi-celled organism. Both plant and animal cells are eukaryotic cells. A Prokaryotic cell does not contain a nucleus. It only contains one chromosome and is a single-celled organism. It was the only form of life on earth for millions of years. Examples of a Prokaryotic cell are the different types of bacteria present today.

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