The paramecium would not be able to get rid of excess water so the cell would burst.
FUNCTION OF THE CONTRACTILE VACUOLE:
- The contractile vacuole is an organelle present in protist organisms like paramecium, amoeba etc.
- The contractile vacuole functions to regulate water balance in the cells of organisms that they are found. Contractile vacuole performs this function by storing excess water and expelling the out of the cell.
- Hence, if a disease affected a paramecium's contractile vacuoles, stopping the normal functioning of the vacuoles, the paramecium would not be able to get rid of excess water so the cell would burst.
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D. Predators
Predators keep populations of other species in check. This was pretty clearly demonstrated in Yellowstone National Park after the wolves were eradicated there. The deer populations increased to the point that the aspen trees nearly disappeared due to the saplings' being eaten by deer. Since the reintroduction of wolves to the park, the aspen trees have begun to flourish once again.
Describe the advantage of scientists being organised into teams all around the world to work on the human genome project.
Answer:
physical process
Explanation:
Assuming that there are no latency mechanisms that prevent germination, several factors are required for the embryo contained in the seed to restart its development.
Water Absorption
Embibition: It is a special case of a <u>physical phenomenon</u> called diffusion, and as such, there is a diffusion gradient. It is characterized by an increase in volume of the substance or body that embeds and is closely related to the properties of colloidal materials. The colloidal particles in the seed form a moderately rigid miscelar network, in which electric charges of opposite signs are oriented in a defined manner. When water penetrates the seed, one fraction occupies the free spaces and another chemically joins the substances of which the seeds are composed. The volume of the seeds increases with the embibition, but the final volume of the system (seed + water) is smaller than the sum of the initial individual volumes of seeds and water; This contraction of the system is proof of the occupation of the free spaces within the seed and the absorption of water in the colloidal matrix.
The embibition rate is affected by several factors that can determine the germination response of the seeds.
