bio 4

21問 • 1年前

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Liver cell requires energy to move vitamins from an area of low concentration, across the cell membrane, To an area of high concentration. The process used by the liver cell is called

Active Transport

What best describes what happens when a cell placed a hypertonic environment?

The excess solute and the environment causes water to move out of the cell

Water is a solvent that forms solutions when mixed with solute such as salt and sugar. The table describes for cells and the surrounding liquid in which they are placed. In which beaker will water move from the cell to the surrounding solution.

The diagram shows dissolved sodium chloride (KCI) particles separated by a semi-permeable membrane. The membrane is permeable to both ions. After diffusion is complete, How will the contents of side A and side B compare?

Sides A and B will contain approximately equal amounts of K+ and Cl- particles

A piece of potatoes placed in a beaker of distilled water. How will this environment affect the movement of water in the cells of a potato?

Water will move into the cells through the cell membrane

Certain molecules are able to move across the cell membrane. Which diagram shows the process of passive transport?

Which of the following statements applies to human liver cell as it progresses through the cell cycle and mitosis?

DNA content will be doubled during phase and equally separated into the two daughters cells

In which stage of the south cycle does the amount of DNA double?

S phase

Which of the following is true concerning mitosis and the cell cycle

Mitosis occurs after G2 and before cytokinesis

Which statement best describes the outcome of mitosis?

Mitosis prevents genetic variation by precisely duplicating parents cell genetic material and passing it on unchanged to daughter cells

An early sign that a eukaryotic cell is undergoing cell reproduction is when the

Replication of genetic material occurs in the nucleus

A number of different drugs are available for use when studying the cell cycle and mitosis. One of these, vincristine, interferes with the formation of microtubules. If microtubules are unable to form, which is the best explanation for how vincristine affects mitosis?

The spindle fiber cannot form to move the chromosomes to opposite poles during mitosis

The passage states that organisms that live in freshwater cannot survive in saltwater. These organisms will undergo process termed plasmolysis. An organism experiencing plasmolysis Would resemble the egg subjected to which variable of the experiment

Egg in Kayro syrup

The vinegar was used to remove the shell from the raw egg. What other effects did the vinegar have on the egg?

The vinegar solution was hypotonic, causing the egg to gain mass

According to the text, we might expect to find this egg to have been in which solution?

egg in syrup

Which of these best describe what occurs during cytokinesis

The cytoplasm is divided between the two new daughters cells

Which of the following is true about plant and animal cells during the process of cell division?

Plant cells develop a cell play while animal cells develop a cleavage furrow

Which of these would best describe what would happen to a cell in a time where nutrients and water were in abundance

The cells growth would speed up significantly leading to shorter periods of time between cell division

A cell going through through the cell cycle does not pass the mitosis checkpoint. What was probably wrong with this cell?

Sister chromatids was not attached properly to the mitotic spindle

Molecules that are too large to be moved through the membrane can be transported out of the cell by

Exocytosis

Which organelle breaks down food molecules the cell can use?

lysosomes

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