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professor190 [17]
2 years ago
10

Kim learns how rocks can change from one type into another over a long period of time. She knows that a rock that undergoes extr

eme heat and pressure below the surface of Earth can be turned into a metamorphic rock. What processes could cause a metamorphic rock to return to the surface of Earth to be worn down again? Choose the two that apply. A. deposition B. plate movement C. chemical changes D. wind or water erosion
Biology
1 answer:
Katarina [22]2 years ago
5 0

Answer:

i think its a. and d.

Explanation:

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b.energy andresistence

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How can osteocytes remain alive within bone? Select one: Osteocytes have membrane extensions that protrude from bone and allow t
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Haversian canals are bone structures that contain blood vessels that provide materials for the osteocytes

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Through this Harvesian canals, blood vessels that contain the necessary nutrients for their growth and development are brought which keeps them alive

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Addition of a nucleotide onto a dna strand is an endergonic reaction. what provides the energy to drive the reaction?
Kruka [31]

The release of pyrophosphate from the incoming nucleotide, and then hydrolysis of the pyrophosphate to inorganic phosphate provides energy for the addition of nucleotide onto a DNA strand.

Nucleotides are linked together by a condensation event that yields a tiny, stable molecule. But the released molecule is pyrophosphate, not water. A good amount of free energy is released when water is added to pyrophosphate.

The high-energy link between the ejected beta and gamma phosphates stores the energy for each incoming nucleotide's addition. The subsequent hydrolysis that occurs drives the process. A substantially greater quantity of energy is released when two phosphates are separated into individual phosphates.

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7 0
2 years ago
In their 1953 paper on the double-helical structure of DNA, Watson and Crick famously wrote: "It has not escaped our notice that
dsp73

Answer:

The statement suggests ability of existing DNA molecule to replicate itself by the process of DNA replication. Each strand of double helical DNA can serve as template for the synthesis of new complementary DNA strand.

Explanation:

Watson and Crick proposed the double-helical structure of DNA. Accordingly, the DNA molecule is a double helical structure in which two polynucleotide chains are held together by base pairing between the complementary bases of two chains.  

There are four nitrogenous bases present in DNA: adenine and guanine (purines) and cytosine and thymine (pyrimidines). Adenine always pairs with thymine and cytosine pairs with guanine base.  

According to Watson and Crick, the ability of one DNA strand to base-pair with a complementary DNA strand suggests the existence of the DNA replication process. During DNA replication, each DNA strand should serve as a template to specify the nucleotide sequence of the new DNA strand.  

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