1. when during the cell cycle is a cell's dna replicated? a. g1 phase b. g2 phase c. s phase d. m phase 2. which of the following represents the phases of mitosis in their proper sequence? a. prophase, metaphase, anaphase, telophase b. interphase, prophase, metaphase, anaphase, telophase c. interphase, prophase, metaphase, telophase d. prophase, anaphase, metaphase, telophase 3. what is the role of the spindle fibers during mitosis? a. they separate the chromosomes b. they break down the nuclear membrane c. they duplicate the dna d. they make the chromosomes visible 4. one difference between cell division in plant cells and in animal cells is that plant cells have a. centrioles b. centrometers c. a cell plate d. chromatin

The answers are:

1- C) S phase

2-A) Prophase, Metaphase, Anaphase, and Telophase.

3-A) A. They help separate the chromosomes.

4)C) A cell plate

Explanation:

1-during the S phase (Synthesis phase) of Interphase. Interphase is basically the daily life cycle of the cell. Cells spend most of their life in Interphase before Mitosis occurs

2-Mitosis consists of four basic phases: prophase, metaphase, anaphase, and telophase. These phases occur in strict sequential order

3 Spindle Fibers equally divide the chromosomes in a parental cell into two daughter cells

4-The cells of land plants, unlike animal cells, have a cell wall made of stiff sugars which surround their cell membranes.

it has to be understood that the sea water contains a huge amount of sodium and chlorine ions and if they enter the cell of the atlantic cod fish, the cell will shrivel and the fish will die. to avoid such a condition, the fish uses active transport for the purpose of removing the ions against the gradient.

explanation:

the atlantic cod is not a maritime osmoconformer. its native application of salts is less than that of the seawater it lives in. it is continually falling water from the gills to the ocean via osmosis.

countering that, the fish is going to be swallowing seawater. but since its internal collection of salts is lower than seawater, the fish will want to go free of excess salt, and since that's going upon a gradient, then active transport, requiring energy, must be used to pump out the salt. much marine fish use the organs to filter out the salt and these fish discharge very straight urine.

the water is warmed up by the sun and then it evaporates into the atmosphere. the sunlight warms the water by its heat. water is then cooled down and condensation takes place. the water then finally returns back to the earth by the process of precipitation in the form of rain or ice.

explanation: