Answer:
D) An original parent DNA strand and one newly synthesized DNA strand comprising a new DNA molecule.
Explanation:
- Semi-conservative replication refers to two strands of DNA unzip, and a new strand is assembled onto each 'conserved' strand.
- The replicated double helix consists of one old strand and one newly synthesised strand.
- It describes the structure of DNA, a twisted helix of two strands with bases joining the strands.
Answer:
The endosymbiotic theory states that some of the organelles in today's eukaryotic cells were once prokaryotic microbes. In this theory, the first eukaryotic cell was probably an amoeba-like cell that got nutrients by phagocytosis and contained a nucleus that formed when a piece of the cytoplasmic membrane pinched off around the chromosomes. Some of these amoeba-like organisms ingested prokaryotic cells that then survived within the organism and developed a symbiotic relationship. Mitochondria formed when bacteria capable of aerobic respiration were ingested; chloroplasts formed when photosynthetic bacteria were ingested. They eventually lost their cell wall and much of their DNA because they were not of benefit within the host cell. Mitochondria and chloroplasts cannot grow outside their host cell.
Explanation:
Answer:
• O A. ACUUGGCGACGU
Explanation:
Anticodons of tRNA have same sequence as of any DNA code they are for. Why? <em>This is because original DNA is transcripted into a mRNA sequence which is complementary to the original DNA sequence. This mRNA is complementary to the original sequence while the anticodons on tRNA are again complementary to the mRNA sequence,</em> which in-turn means that they have exactly same sequence as of original DNA. This is how they interpret the original cod and manifest the expression of correct amino acids as they are present in parents.
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Answer:
Ascending Sensory Pathways of the Spinal Cord: The dorsal column system and spinothalamic tract are the major ascending pathways that connect the periphery with the brain. The trigeminal pathway carries somatosensory information from the face, head, mouth, and nasal cavity.
Explanation:
