Cilia usually allows the cells to become motile. The correct option is A.
Cilia are tiny hair-like organelles that are attached to the cellsurface and are found on almost all polarized cell types in the human body.
They have been customized as important devices for variety of cellular functions, which explains why cilia-related abnormalities can affect numerous organsystems.
The bronchus in the lungs is lined with cilia, which are hair-like projections that move organisms and debris up and down the airways.
Goblet cells are scattered all across the cilia and secrete mucus, which protects the bronchus lining and traps microorganisms.
Motile cilia are found on the epithelialcells among many internal organs, including the lungs, trachea, and digestivesystem. They are also discovered on protozoans like Paramecium and aid in locomotion.
Thus, the correct option is A.
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Answer:
geocentric model
Explanation:
a substance that moves across a cell membrane without using the cells energy tends to move? a.) away from the area of equilibrium b.) away from the area where it is less concentrated. c.) away from the area where it is more concentrated d.) toward the area where it is more concentrated
Answer: The correct option is C.) away from the area where it is more concentrated.
A substance that moves across a cell membrane without using the cells energy tends to move from an area of high concentration to an area of low concentration.
This is known as Passive transport. In this transport, substances move down the concentration gradient i.e from an area of high concentration to an area of low concentration. It is also called simple diffusion as no energy is required in this process.
Answer:
For population increase two factors or ways are described which are birth or death, immigration and emigration.
The two ways a population can decrease is through mortality and emigration.
Explanation:
A population's increase is resolved by death, birth, immigration, and emigration. When a population's birthrate is higher than its death rate the population size, The population size is rises.
Also,The two factors responsible for the decrease in size of a population are emigration, which is the migration of an individual from a place. and mortality, which is the number of individual deaths in a population over a period of time.