Answer: Row X describes meiosis, while row Y describes mitosis.
Explanation: There are two types of cell division: meiosis and mitosis.
In meiosis, a cell divides into twice to produce four identical daughter cells each with half the number of chromosomes in the parent cell.
Therefore, if the parent cell has 14 chromosomes, the daughter cells will have 7 chromosomes.
In mitosis, a cell divides once to produce two identical daughter cells each with the same number of chromosomes as in the parent cell.
Therefore, if the number of chromosomes in the parent cell is 14, the daughter cells will have 14 chromosomes.
Answer:
Venous return (VR) is the flow of blood back to the heart.
Venous return to the right atrium is the most important factor determining cardiac output, provided both ventricles and the pulmonary circulation are normal.
Explanation:
Venous return refers to the flow of blood from the periphery back to the right atrium, and except for periods of a few seconds, it is equal to cardiac output.
Venous return is facilitated by a number of factors, including inspiration, increased total blood volume, increased venomotor tone, the cardiac suction effect, the presence of venous valves and the skeletal muscle pump.
Contraction of the skeletal muscles surrounding veins increases the pressure within the veins, pushing open the proximal valve and forcing blood toward the heart. For example, when calf muscles contract during exercise, blood is forced toward the heart, thus increasing venous return.
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Answer:
When phospholipids are mixed with water, they spontaneously rearrange themselves to form the lowest free-energy configuration. This means that the hydrophobic regions find ways to remove themselves from water, while the hydrophilic regions interact with water. The resulting structure is called a lipid bilayer.
Explanation:
The single mother would be considered to be a member of lower class. In addition, a class system employs a social ranking established primarily on economic position and a system of stratification below which country-dwellers were obligatory to work land rented to them by nobles in altercation for military protection was recognized as estate system.
the Geographic barrier for speciation of finches are---
b. mountain range or a canyon