Biology, 01.07.2019 04:10 jakails7532
Lily is researching the light-sensing rod cells of the eye. she decides to use stem cells to produce new rod cells. which statement best explains why lily is using stem cells for this purpose?
a. specific genes in a rod cell’s dna can be activated to produce new stem cells.
b. specific genes in a stem cell’s dna can be activated to produce new rod cells.
c. all genes in a rod cell’s dna are activated, so new stem cells are produced each time the cell divides.
d. all genes in a stem cell’s dna are activated, so new rod cells are produced each time the cell divides.
e. none of the genes in a rod cell’s dna are activated, so new rod cells can be produced only from stem cells.
Answers: 3
Biology, 22.06.2019 00:30
Imagine that certain laws of physics could be ignored and you were able to travel vast distances in moments. now imagine that you traveled to an earth-like planet located light-years away that is known to support life. think about what you’ve learned in this unit and make an argument for what you think would be the dominant type of life form on this planet. consider whether a notochord is required for an organism to manipulate its environment and become a dominant creature.
Answers: 3
Biology, 22.06.2019 06:00
The empty trna moves off and picks up another matching amino acid from the cytoplasm in the cell. the anticodon of the trna, with its attached amino acid, pairs to the codon of the mrna, which is attached to a ribosome. this sequence is repeated until the ribosome reaches a stop codon on the mrna, which signals the end of protein synthesis. the ribosome forms a peptide bond between the amino acids, and an amino acid chain begins to form. when a second trna with its specific amino acid pairs to the next codon in sequence, the attached amino acid breaks from the first trna and is bonded to the amino acid of the second trna.
Answers: 1
Biology, 22.06.2019 14:00
The polio virus can cause skeletal muscle paralysis by destroying neuron cell bodies. what area of the spinal cord is destroyed
Answers: 3
Lily is researching the light-sensing rod cells of the eye. she decides to use stem cells to produce...
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