Angina Pectoris Overview
A concise summary of angina pectoris covering its definition, causes, types, pathophysiology, symptoms, and management strategies.
Study this lessonTransmission de l'information génétique
20 cardsExplore la transmission de l'ADN lors de la mitose et de la méiose, incluant les mécanismes de réplication, les phases cellulaires, les anomalies chromosomiques et leur impact sur la stabilité du caryotype.
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What is the primary mode of genetic information (IG) transmission during cell division that increases the number of cells while maintaining the same genetic program?
Answer
Mitose is the cell division process that increases cell number while maintaining the same genetic program.
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What are the four phases of mitosis?
Answer
The four phases of mitosis are prophase, metaphase, anaphase, and telophase, followed by cytokinesis.
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Which process allows for the formation of gametes (spermatozoa and ova) in an adult?
Answer
The process of forming gametes (spermatozoa and ova) in adults is called meiosis.
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What happens to the chromatids of each double chromosome during anaphase?
Answer
They separate and move to opposite poles of the cell.
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What does the cell cycle include?
Answer
The cell cycle includes the mitosis (division) and the interphase (G1, S, G2 phases).
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How many successive divisions make up meiosis?
Answer
Meiosis involvestwo successive divisions: Meiosis I and Meiosis II.
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What is the result of DNA replication?
Answer
Two identical DNA molecules, each consisting of one parental and one newly synthesized strand.
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In what direction does the synthesis of the neoformed DNA strand occur?
Answer
The synthesis of the neoformed DNA strand occurs in the 5' to 3' direction.
QuestionFlip the card
Which enzyme is responsible for unwinding the two DNA strands during replication?
Answer
The enzyme responsible for unwinding the two DNA strands during replication is the helicase.
QuestionFlip the card
What is the primary event that characterizes Prophase I of meiosis?
Answer
Pairing of homologous chromosomes to form bivalents, followed by crossing-over.
QuestionFlip the card
According to Meselson & Sthal's experiment, how does DNA replicate?
Answer
DNA replicates in a semi-conservative manner. Each parental strand serves as a template for a new, complementary strand.
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What is the outcome at the end of Meiosis II?
Answer
Meiosis II results in four haploid cells, each with a single chromatid per chromosome.
QuestionFlip the card
What happens during a "mutation faux-sens"?
Answer
A mutation faux-sens results in the substitution of one amino acid for another, altering the protein's structure and function.
QuestionFlip the card
What term describes the presence of an extra chromosome in a pair?
Answer
A trisomy is the presence of an extra chromosome in a pair.
QuestionFlip the card
What is the key event during Anaphase I of meiosis?
Answer
Homologous chromosomes separate and move to opposite poles.
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What is the term for a random variation of one or more nucleotides in a gene?
Answer
A mutation is a random variation of one or more nucleotides in a gene.
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Which process ensures the passage from the diploid state (2n) to the haploid state (n)?
Answer
Meiosis ensures the passage from diploid (2n) to haploid (n) state by separating homologous chromosomes during its first division.
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What is the primary role of the hippocampus in memory?
Answer
The hippocampus is crucial for the encoding of new memories.
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What is the fate of a mutation that occurs in a somatic cell?
Answer
It is transmitted to daughter cells via mitosis, forming a clone of mutated cells. It can lead to cancer if it affects cell division genes.
QuestionFlip the card
What is the general name for substances that disrupt the functioning of the central nervous system and can lead to dependence?
Answer
Psychoactive substances disrupt the central nervous system and can lead to dependence.
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