On the other hand, cell membranes restrict diffusion of highly charged molecules, such as ions, and large molecules, such as sugars and amino acids. ... Specialized proteins in the cell membrane regulate the concentration of specific molecules inside the cell.
The answer would be true (:
If you're looking for a quote regarding using sunlight as a source or energy, a quote by Maria Telkes would be '"Sunlight will be used as a source of energy sooner or later..." she said. "Why wait?"'
Answer:
A. Smell
Explanation:
Mechanoreceptors are known to primary sensory structures. Their function is to provide information about the mechanical characteristics of the internal and external environments. These mechanoreceptors usually detect stimuli such as pressure, vibration, sound and touch from the internal and external environments.
Smell does not rely on mechanoreceptors but rather rely on olfactory receptors.
Answer:
<em>The correct option is A) The amount of grass will increase, and the number of frogs will decrease.</em>
Explanation:
As from the above illustration, we can see that the grasshoppers feed on grass. The frogs feed on the grasshoppers.
If most of the grasshoppers are killed, then the grass will have fewer organisms to feed on it. As a result, the amount of grass will increase.
Reduction in the population of grasshoppers will mean that there is lesser food available for the frogs. As a result, the frogs will compete for food. Most will migrate, others might get killed due to lack of food. Hence, the population of frogs will reduce.