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Anika [276]
2 years ago
12

Janis tore a ligament in her ankle. Until the injury heals, she is at most risk for which of the following? dislocating bones lo

sing cartilage producing abnormal blood cells sustaining nerve damage
Biology
2 answers:
bulgar [2K]2 years ago
5 0

Answer:

The correct answer is ''dislocating bones.''

Explanation:

When the bone " pops out" or dislodges from its place (joint), a dislocation occurs. An ankle dislocation, like any other joint, occurs when the 2 articular surfaces of the ankle separate, in this case when the talus ( together with the rest of the foot) " pops out of place" and is no longer in contact with the surface of the tibia-fibula. This leads to the complete breakdown of the ligaments that hold the joint in place, causing the bones to " pops out." Producing significant deformities in the affected joint.

iVinArrow [24]2 years ago
5 0

Answer:

A

Explanation:

EDG

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Which of the following best describes the process of transcription during protein synthesis?
jonny [76]

Answer:

The answer is 'D'. Transcription is the process by which a single stranded mRNA is formed from the double stranded DNA.

Explanation:

The central machinery of biology involves three processes- replication, transcription and translation. The process by which DNA doubles itself is called <u>replication</u>. In translation, protein is formed from the messenger RNA or mRNA. The major steps involved in transcription are:

  1. <em>Initiation</em>
  2. <em>Elongation</em>
  3. <em>Termination</em>

In the process of translation, amino acids bind together in the <u>ribosome</u> to form a polypeptide chain.

8 0
3 years ago
Which of the following best explains how the expression of a eukaryotic gene encoding a protein wil differ if the gene is expres
Ivan

Answer: c. The protein will be made but will not function, because prokaryotes cannot remove introns.

Explanation:

Eukaryotic cells are cells that have membrane-surrounded organelles, such as a nucleus which is an organelle that stores the DNA, the genetic material. On the other hand, prokaryotic cells do not have a nucleus, and the genetic material is a single molecule, usually circular and closed and double-stranded, which is located in a sector of the cell known as the nucleoid (meaning "similar to the nucleus"), which does not imply the presence of a nuclear membrane.

<u>A gene is a unit of information at a DNA locus that codes for a protein. To synthesize that protein, DNA must be transcribed into messenger RNA (mRNA), and that mRNA is read by ribosomes in a process called translation or protein synthesis</u>. The difference between protein synthesis in prokaryotic and eukaryotic cells is that in prokaryotes, transcription and translation take place directly in the cytoplasm since there is no nucleus. In eukaryotes, transcription takes place inside the nucleus, to generate mRNA. This mRNA molecule is then directed to the cytoplasm where translation happens.

a. In prokaryotic cells, ribosomes are produced in the cytoplasm, whereas in eukaryotic cells they are generated in the nucleolus within the cell nucleus. So they both have ribosomes and they are used to make proteins, then this option is true.

b. RNA polymerase initiates transcription of all different types of RNA (mRNa, ribosomal RNA and transfer RNA). However, there are three RNA polymerase variations, each one translate a different type of gene. But, prokaryotic RNA polymerase can translate eukaryotic genes. Then this option is not true.

c. Prokaryotic cells don't  have introns because those cells do not perform a post-transcriptional RNA modifications, only done by eukaryotic cells. One of the modifications is the excision of introns in RNA. An intron is a region of DNA that is part of the primary RNA transcript, but unlike exons, they are removed from the mature transcript prior to translation. <u>So, this remotion does not happen in prokaryotes because they just don't have introns</u>. Also, in prokaryotic cells. the translation and transcription machinery is coupled. So, the transcription and translation occurs simultaneously, there will be no remotion of introns then the protein will be synthesized differently, since the reading frame is changed. Remember that each codon (set of three nucleotides) codes for an amino acid. So if the gene sequence is different because certain sections of the gene have not been removed, the protein will be different, and probably it will not function. This option explains how the expression of an eukaryotic gene encoding a protein will differ if the gene is expressed in prokaryotic cells.

d. The genetic code is the set of rules that defines how a sequence of nucleotides in RNA is translated into a sequence of amino acids in a protein. This code is common to all living organisms, although there are small variations, and it has a unique origin and is universal.  So, the code defines the relationship between each sequence of three nucleotides, called a codon, and each amino acid.  The sequence of genetic material is composed of four distinct nitrogenous bases, which are represented by letters in the genetic code:

  • Adenine (A)
  • Thymine (T)
  • Guanine (G)
  • Cytosine (C)
  • Uracil (U), only in RNA (instead of T)

So, the genetic code is the same for eukaryotes and prokaryotes. So this option is not true.

7 0
2 years ago
What body system contains a structure that can expand to hold more waste products A. Urinary System B. Endocrine System C. Respi
miv72 [106K]

Answer:

A. Urinary system its the one system that holds waste

Explanation:

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Answer:

Magnetic reversal proves seafloor spreading because we can see the polarity of the Earth's magnetic field in rocks. As magma cools, particles in it get “frozen” in the direction of the magnetic field. ... The magnetic evidence shows that the oldest rocks are far away from the ridge and the newest rocks are closest.

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*Glomerulus* -The tiny units within the kidney where blood is cleaned. Can also be known as Glomeruli.
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