Answer:
we do it to select the best seeds
the seeds floating on the top are bad seeds which are empty inside
the seeds that are on the bottom are good seeds they are heavy
Answer:
plasmolysis is the shrinkage of protoplast from the cell wall under the influence of a hypertonic solution.this can be observed by placing the fresh filament of spirogyra in a 10% solution of common salt.the cell undergoes exomosis.
I hope this helps
Answer:
The psychological measure that has been used by Dr.singh in this scenario is physiological measures.
Explanation:
Here, Dr. singh a scientist's observations are being listed. Its been given that he wants to study about how the anxiety affects adolescents.
For measuring and observing all the points he measures the heart rates which are causing electrical changes, the respiration and the sweating pattern of individuals.
Also he is going through the hormonal changes in their blood.
So, The psychological measure that has been used by Dr.singh in this scenario is physiological measures.
Physiological measures: An accurate and precise information about an individual's body and its body's functioning like the temperature of skin, sweating, respiration,the heart rate, palmer sweat and also eye tracking by a set of instruments i called the physiological measures.
This measurment is done by identifying and monitoring thr parameter of physical body especially in the major body organs.
Answer:
toxins produced by the microbe
Explanation:
The microbial mortality rate is influenced by the following factors:
- protein denaturation: chemical and physical agents are capable of eliminating the protein's functional capacity by disrupting its tertiary structure;
- membrane or cell wall disruption: the ability of some substances to modify the physical and chemical properties of the membrane, impairing its function, destroying or inhibiting bacterial growth;
- removal of free sulfhydryl groups: oxidizing agents and heavy metals interfere with cellular metabolism;
- Chemical antagonism: Occurs when a chemical affinity antagonist combines with an enzyme of a particular microorganism, preventing the development of the appropriate reaction.
The toxins produced by microbes do not influence the microbial mortality rate, but have a strong influence on the status of an infection.