Answer:
As the diagram is not given, hence let's generally describe the movement of molecules along the cell membrane.
Molecules can either pass through the cell without using energy through the process of passive transport. An example includes molecules of oxygen.
Molecules which are large and un-polar cannot move through the cell membrane easily. These molecules will require energy to move through the cell membrane. These molecules might move in with the help of the carrier or facilitated proteins. Examples include molecules of glucose.
Answer:
Bb, Db
, Bd and Dd
Explanation:
When a cross between two parents (having certain trait) is carried out , they share their alleles with each other to produce offspring with new traits. These offspring have gentically different allele combination as compared to their parents. A genetic cross can be represented by a punnet square (as given below)
The cross between two parents with genotype "BD" and "bd" will result into the following offspring -
B D
b Bb Db
d Bd Dd
Answer:
Red light act as a inhibitor and hence causes delay in flowering
Explanation:
Through Periodism phenomenon, the regulation in exposure to daylight for a certain time period can delay or enhance the flowering of the "light duration"sensitive plant.
When "short day plants" are exposed to light between the essential long period of nights or dark period, the stage of flowering gets delayed.
Hence, chrysanthemums on being exposed to red light during their daily darkness period lead delay in flowering as red light act as an inhibitor.
Messages from the motor cortex are blocked by the brainstem.
Answer: physiological
When we are under constant stress, our body will start expressing it with physiological responses. When the body realizes the presence of the stressor agent, sends signals to the hypothalamus, and it activates the sympathetic and hormonal
responses to eliminate the stress.
The digestive tract is a part of the body very commonly affected by stress.
