"Time is the independent variable, and the number of birds is the dependent variable" is the one among the following choices given in the question that states the independent and dependent variables in Sam’s investigation correctly. The correct option among all the options that are given in the question is the second option.
Answer:
The most likely pathway is ER - Golgi - vesicles that fuse with plasma membrane.
Explanation:
The endomembrane system is an extensive sets of intracellular membrane. These system was first discovered in the late 1800s when scientist Camillo Golgi noticed that a certain stain selectively marked only some internal cellular membranes. Golgi actually thought that these intracellular membranes were interconnected, but advances in microscopy and biochemical studies of the various membrane-encased organelles later made it clear the organelles in the endomembrane system are separate compartments with specific functions.
It permits calcium to leave the sarcoplasmic reticulum and enter the cytosol. During muscle contraction, the binding of acetylcholine initiates an excitatory impulse, which is transmitted to the deep of the muscle via T tubules. T tubules are the invaginations of cell membranes of muscle cells (sarcolemma). When the action potential travel down the t-tubules, they change shape and allow the calcium ions to enter into the sarcoplasm from the sarcoplasmic reticulum.
C) be attracted to one another
Answer:
The options are not included but the relationship between them is MUTUALISM.
Explanation:
The question depicts a relationship between two different species of organisms (hibiscus and bumblebees) called Symbiosis. Symbiosis can be of different types depending on whether the effect of the relationship on the involved organisms. The type in this case is MUTUALISM, which is a relationship between two organisms that are both benefitting from the relationship.
The bumblebees are benefitting from the relationship by getting fed from the nectar produced by the hibiscus flower plant while the hibiscus is benefitting from the relationship by getting its pollen transferred to another plant by the bees.
