The correct option is D.
When it comes to movement of particles in an out of cells, there are two basic types of transportation, these are passive and active transportation. The passive transportation of particles does not require the use of energy while the active transport system requires the use of energy in the form of ATP. From the diagram given in the question, it can be seen that energy is involved in the process. Energy is mainly needed to move the particles against the concentration gradient since the inside of the cell is highly concentrated while the outside has low concentration. <span />
Let's count them!
the initial number of zebras, let's call it z:
A population of zebras experienced ten births
this means:
z+10
six deaths to predation
this means:
z+10-6
three deaths to disease
this means:
z+10-6-3
three individuals joining the population
this means:
z+10-6-3+3
and
zero
individuals leaving
this means:
z+10-6-3+3+0
now, let's sum it up:
z+10-6-3+3+0=z+10-6-3+3=z+10-6=z+4
so the population grew (by 4 individuals); it's a positive population growth!
Answer:
As the diagram is not provided, lets have a look at the different parts of a neuron generally.
Explanation:
Dendrites can be described as the parts of the neuron which have a structure resembling like the branches of a tree. The main function of the dendrites is to receive signals from other neurons.
Synapses are the part of the neurons which allows dendrites of different neurons to interact.
Axons are part of the neuron which shaped like a tube. it conducts electrical impulses away from the cell body. They are protected by insulating structures called myelin sheath.
The waste comes in many different forms and types and can be categorized in variety of ways. Generally it could be liquid or solid. And there is the hazardous type of waste that is harmful to the health and environment. Organic waste comes form animals and plants. Recyclable waste is the waste that can be recycled into new useful products. Green waste can be discharged in the us water.
Answer:
Ethylene. (Ans. D)
Explanation:
Ethylene regulates ageing and ripening of plants. Normally ethylene is produced by most fruits and vegetables in small quantities, but in climacteric fruits like banana creates large amount of ethylene. Then this release of ethylene shows several actions such as increase respiration, more ethylene production, change in color and flavor.
So, If you were shipping green bananas to a supermarket thousand of miles away, ethylene chemical eliminate from the plants' environment.
