Answer:
Los tres ejemplos en donde se pueda emplear una polea movil son: un aljibe, un multigym(aparato para realizar actividad fisica) y una perciana.
Explanation:
Las poleas moviles generan movimientos de traccion, donde se mueve una masa pesada o un objeto de gran peso, al utilizar este sistema de poleas el peso del objeto es disminuido.
Tiene un sistema de gancho, con cuerda y dos poleas( a veces una de estas poleas suele ser fija para poder generar el centro rotacional de la traccion)
Answer:
Tissues
Explanation:
Tissues are a group of cells that have the same function
Hope this helps :D
I think convergent boundary
Answer:
In meiosis I there is prophase I, metaphase I, anaphase I, and telophase I and then in meiosis II there is prophase II, metaphase II, anaphase II, and telophase II.
Explanation:
In meiosis I we have;
Prophase I in which a pair of homologous chromosomes line up and form a tetrad. This is the stage during which genetic recombination occurs.
Metaphase I occurs, during which the homologous chromosomes line up opposite each other at the metaphase plate. The chromosomes orientate themselves randomly, thus homologous chromosomes are distributed randomly to daughter cells .
In Anaphase I, homologous chromosomes move to opposite sides of the cells but sister chromatids remain together. Each cell now has 23 chromosomes.
Telophase I in which the homologous chromosomes move to the poles and cytokinesis occurs. Two daughter cells are formed.
In meiosis II we have;
Prophase II (note: there is no interphase as seen in mitosis) during which chromosomes start to move to the metaphase II plate. There is no replication.
Next is metaphase II when the chromosomes align at the metaphase II plate.
In anaphase II the sister chromatids separate from each other and move towards opposite poles.
Lastly, in telophase II cytokinesis occurs again and four daughter cells are produced. Each of the four daughter cells has 23 chromosomes.
