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During protein synthesis, mRNA is translated into three-base sequences representing amino acids. What signals the ribosomes to begin translating the mRNA into a new amino acid sequence?
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biology Q3
Question | Answer |
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Parakeets are bird whose basic plumage color is green. However, parakeets exhibit a wild range of color both the wild and in captivity. Which process is the source of the wide color variation observed in parakeet populations? | Genetic Mutation |
During protein synthesis, mRNA is translated into three-base sequences representing amino acids. What signals the ribosomes to begin translating the mRNA into a new amino acid sequence? | Codon |
An RNA sequence includes 12 bases. What is the maximum number of amino acids for which sequence could code? | 3 |
The gametes of human males and females have the same number of chromosomes. Which best describes what happens to the chromosome when typical male and female gametes combine to produce offspring? | The number of chromosomes reduce by half. |
A segment of DNA has one strand with the following sequence of bases: AGCGGCATAGCCA The complimentary strand of DNA would be. | TCGCGTATCGTT |
What type of cell passes on mutations? | Egg cell |
Which of the following is an alternate form of a gene? | Allele |
The DNA sequence ACTCG produces which mRNA sequence during transcription? | UGAGC |
In order to digest milk, the human body must manufacture a protein called lactase. When the digestive system requires lactase, it manufactures the protein based on information stored in what molecule? | DNA |
Both DNA & RNA | Contain phosphate groups |
How can cancer cells be described? | Dividing out of control |
Which best explains why DNA replication in the human body is significant? | It replaces any damaged DNA cells |
Which of the following is a result of the exchange of homologous chromosomes parts during the process of meiosis? | Offspring with unique combinations of traits |
What is the purpose of mitosis? | Create genetic diversity |
During the cell cycle, a cell grows | & divides |
Mitosis & meiosis are similar processes. Which best describes what can only occur after meiosis? | Four daughter cells are produced by a single parent cell. |
Living cells synthesize long chains of amino acids called proteins. Which substance provides the information needed to correctly sequence the amino acid during protein synthesis? | tRNA |