C. they have become habituated to human contact
Answer:
All plants and the plant products like vegetables and fruits are made up of turgid living cells. Turgor is the pressure buildup in the plant cell by the fluid, which causes the cell membrane and the cell contents exert an outward pressure against the cell wall. When this structure is destroyed, the cells break and produce a noise due to the sudden release of turgor pressure. That's why a fresh carrot or celery will produce a "snap" sound when we break it. A vegetable that is not fresh lose moisture and their cell's turgidity slowly. Upon losing the turgor they will become limp and wilts.
Explanation:
A plant cell has a rigid outer cell wall made up of cellulose, hemicellulose, pectin and lignin. The cell membrane inside the cell wall is semi permeable which allows only certain components to move freely through this membrane. Water can pass in or out of a cell through the cell wall and the cell membrane by osmosis and transpiration. Another structure inside the plant cell called vacuole acts as a bag of water and creates turgor in the cell.
Turgor pressure or turgor is the pressure buildup in the plant cell by the fluid, which causes the cell membrane and cell contents to exert an outward pressure against the cell wall. The cell wall is made to withstand this pressure. When the vacuole filled with water presses against the cell wall, it makes the cell wall nice and firm. Thus the turgor makes the vegetables like carrot and celery firm. So a fresh carrot or celery will produce a snap sound when we break it because their cells break and produce a noise due to the sudden release of turgor pressure inside the cell.
Once the vegetables are harvested or damaged, they transpire and lose moisture slowly. As a result, the vacuole which is not full of water anymore does not press against the cell wall and the cell loses its turgidity. Upon losing the turgor the plant will become limp and wilts. That's why a vegetable that is not fresh will not make the snap sound when we break it and may bend.
In order for a fruit or vegetable to remain crunchy and crispy, it is important to maintain the turgor inside their cell. To maintain the turgor, the vegetables should not be damaged so that the cell wall does not break and should stay in place. Also there should be enough water inside the cell, so avoid placing them in direct sunlight.
Answer:
1. Verdadero
2. Falso
3. Falso
4. Falso
5. Verdadero
Explanation:
Los seres humanos, como así también la mayoría de los mamíferos, poseen dos cromosomas sexuales: un cromosoma X y un cromosoma Y. Las hembras poseen 2 cromosomas X (un cromosoma X es heredado de la madre y el otro cromosoma X es heredado del padre); mientras que los hombres tienen un cromosoma X y un cromosoma Y (el cromosoma X es heredado de la madre, mientras que el cromosoma Y es heredado del padre). La hemofilia es una enfermedad recesiva monogénica ligada al cromosoma X, la cual está caracterizada por cuadros hemorrágicos causados por el déficit parcial y/o total de factores de coagulación. Los hombres expresan el fenotipo recesivo con mayor frecuencia que las mujeres para aquellos genes que se encuentran en el cromosoma X y poseen un mecanismo de herencia recesivo, esto debido a que los hombres sólo poseen una copia del alelo ligado al X (lo que hace que el alelo recesivo se exprese con mayor frecuencia en el fenotipo). De este modo, los hombres manifiestan hemofilia con mayor frecuencia que las mujeres porque en mujeres el gen recesivo necesita la presencia de dos copias del alelo defectuoso recesivo para que se exprese en el fenotipo hemofílico (es decir, las mujeres heterocigotas son portadoras de un alelo defectuoso pero no expresan la condición en el fenotipo), mientras que en los hombres la presencia de un sólo alelo defectuoso localizado en su único cromosoma X es suficiente para la expresión del fenotipo recesivo. En hombres, los genes ligados al cromosoma X son siempre heredados de la madre (los hombres heredan del padre el cromosoma Y). Finalmente, la herencia de caracteres ligados al cromosoma Y es muy rara porque los genes localizados en la región diferencial del cromosoma Y son escasos y estos genes solamente pueden ser trasmitidos de padres a hijos varones (ya que se encuentran en el cromosoma Y).
Answer:
the plasma membrane is the control center of the cell
Answer:
Pesticides used in mosquito control can contribute to immune suppression in humans. A report from the World Resources Institute notes, "Impairment of the immune system by chemical pesticides can lead to allergies, auto immune disorders such as lupus, and cancer.
Explanation: