Mass can either increase or decrease the speed depending on the height of the roller coaster.
Answer:
controlled experiments
Explanation:
Experiments in which all variables are identical except for one are called controlled experiments. This where an observer tests his hypothesis by looking on changes that were brought about by one variable. The results are always dependent on one adjusted variable.
Answer:
A Hospital Acquired and Unit Acquired Pressure Injury
Explanation:
On her hospital admission her skin was reported to be dry and intact with poor tugor, therefore, any pressure areas developed within the hospital stay including the transfer to the unit will then be considered a hospital and unit acquired pressure sore
A Hospital Acquired Pressure Injury Only would then be referring to a new pressure injury that developed after admission to the facility and not necessarily to a specific unit
A controlled variable is not changed throughout an experiment. It is there so that the other variables being tested on can be better understood.
Answer:
The case in which facilitated diffusion would be needed is in the transport of large non-polar molecules moving down the concentration gradient.
Explanation:
Facilitated diffusion (FD) involves a form of passive transport, that is, it does not require energy and mobilizes substances across the cell membrane in favor of a concentration gradient.
The passive transport mechanism of FD is necessary only in the case of transport of very large molecules or polar molecules that:
- Cannot be transported by simple diffusion, due to the selective permeability of the membrane
- They follow a concentration gradient, from the place with the highest concentration to the one with the lowest concentration.
For FD to occur, it requires the use of a protein, which acts as a carrier of the molecules to be mobilized.
The other options are not correct because:
<em> A and C. Passive transport, as facilited diffusion, implies movement in favor of a concentration gradient.</em>
<em> B and C. Non-polar small or very small molecules can cross the membrane by simple diffusion.</em>
