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san4es73 [151]
2 years ago
11

Answer this quickly please

Biology
2 answers:
iogann1982 [59]2 years ago
7 0
The answer is A good luck !
Nadya [2.5K]2 years ago
4 0

Answer:

football a

Explanation:

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(03.02 LC)Which of the following correctly describes the law of conservation of energy?
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The law of conservation of energy is a law of science that states that energy cannot be created or destroyed, but only changed from one form into another or transferred from one object to another. Hope it helps


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13. A biochemist isolated and purified molecules needed for replication. When DNA was added, replication occurred but the DNA mo
zalisa [80]

Answer:

DNA ligase

Explanation:

DNA replication is a process whereby a particular DNA makes a copy of or synthesizes itself. It consists of several steps with some important enzymes for successful, error free replication. The various steps are as follows;

  • Unwinding of the double helix structure of the DNA and formation of replication fork. The enzyme involved here is the DNA helicase.
  • Primer, a short piece of RNA becomes synthesized and binds to the 3' end of one of the 2 strands of the DNA, the leading strand. The enzyme involved is the DNA primase.
  • Replication of the <em>leading strand</em> then proceeds with the elongation of the primer through the addition of bases in the 5' to 3' direction leading to the formation of continuous strands.
  • The other strand of the DNA, known as the <em>lagging strand </em>starts its own replication by binding with multiple primers at different regions of the strand. Bases are then added to each primer leading to the formation of several, short discontinuous DNA strands known as Okazaki fragments. The enzyme involved in the elongation process is the DNA polymerase.
  • Next is the termination of the replication process after the formation of the continuous and discontinuous strands. Exonuclease enzyme removes primers from the synthesized strands. Primers are replaced by appropriate DNA bases and the Okazaki fragments are joined to form a unified DNA strand by an enzyme known as the DNA ligase.

The many, few nucleotides long DNA segments observed by the Biochemist are the Okazaki fragments that should have been joined together by the DNA ligase.

Hence, DNA ligase must have been the component left of the mixture.

7 0
3 years ago
What are the five functions of the skeleton system
Ann [662]
Protection- the cranium and ribs protect the brain and vital organs in the chest

Shape- gives shape to the body and makes you tall or short

Support- holds your vital organs in place when playing sports. The vertebrae column holds the body upright

Movement- muscles are attached to bones, which are joined. When the muscles contract, the bones move

Blood Production- red blood cells(to carry oxygen) and white blood cells(to protect against infection) are produced in the bone marrow of some bones
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Name four muscles that are found in the abdominal wall of the cat and the human
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Hii...so the answer is
The four layers are the external oblique, internal oblique, transverse abdominals.
hope u will like it.:)
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3 years ago
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