Answer:
Unconditioned stimulus.
Explanation:
Classical conditioning may be defined as a type of learning procedure in which the biological procedure is used to pair up with the previous nerve stimulus. This stimulus result in the response of an individual.
The Pavlov experiment with the dog explains the process of classical conditioning. The ringing of bell (conditioned stimulus) is paired with unconditioned stimulus (meat presentation).
Thus, the meat presentation is unconditioned stimulus.
Answer: 2
explanation: enzymes are known as proteins used to break down proteins and other macromolecules during digestion
The statement that describes the cell after twenty minutes is this: WATER WILL MOVE FROM THE CELL INTO THE BEAKER RESULTING IN A SMALLER CELL.
Osmosis is defined as the process by which the molecules of a solvent move through a semi permeable membrane from the region of lower concentration to the region of higher concentration. For the question given above, the concentration of 30% salt is greater than that of 10% in the cell, so the water molecules will move from the cell [region of lower concentration] into the salt solution [region of higher concentration]. The loss of water will make the cell to shrink and to become smaller.
Yannick's class measured the width of one leaf serval times the values that the class recorded included 10 mm 8 mm 15 mm 5 mm 13 mm. The several different widths indicate that the class lacked the understanding of the word 'width' of the leaf and a standard procedure to make the measurements. Since leaf has two axis of making measurements, along the vein and across the vein. The measurements made along the vein would be greater than that of the across the leaf stem. Also the point of measurement of the width across the vein would vary as leaf tappers by the tip. Hence they should have been instructed to measure the width across the vein by folding the leaf into two halves, so as to make the readings more relevant.
