Answer:
b. Proteins
Explanation:
Several transmembrane proteins serve as transport proteins and move charged, polar and large substances such as ions, amino acids, sugars through membranes. These are the carrier proteins and channel proteins. Each type of transport protein transports a specific type of substance. Carrier proteins bind the ion or molecule and undergo changes in shape. This change moves the molecule across the membrane. Channel proteins form pores through the membrane to allow transport of substances.
For example, aquaporins are transmembrane proteins that allow water to pass through membranes.
Answer:Consumption of net primary productivity
Explanation:
The net primary productivity can be defined as the gross primary productivity subtracting the rate of energy loss for maintenance and metabolism.
The products that is being produced by the producers are used by the people is known as biomass.
Helmut Haberl along with its colleagues have compiled the data on the usage of the primary productivity and its effect on the resources available by the nature to the mankind.
Answer: consists of the gastrointestinal tract plus the accessory organs of digestion (the tongue, salivary glands, pancreas, liver, and gallbladder).
The answer to the question mentioned above is "Synaptic Cleft".
The region composed of a presynaptic cell, its target cell and the space between them is a Synaptic Cell. This cell exists between the neurons and this is a microscopic gap.