Drug Testing as a requirement for school admission?

“Do you agree that DRUG TESTING should be done as a requirement for admission to schools?”

Since there are existing rules and regulations for driver's license applicant to be tested for any dangerous drug for the purpose of securing a driver's license and etc., drug testing should also be done as a requirement for admission to schools to fully guard the safety of learners and teachers.


Drug of abuse comprises the frequent or habitual and disproportionate use of chemical or substances that eventually users achieve a certain effect. These substances being tested during drug testing are illegal due to their high capability for addiction and abuse that are usually used for pleasure instead for medical reasons.

Unfortunately, because of the fact that certain drug chemicals could assemble alterations to the brain, it can only take a few times or even a single time to be on the road to addiction. Because of abuse of certain drugs it affects the brain and the body directly that causes many physical, mental and emotional problems. Since drug affects a person’s life it is not appropriate and definitely not conducive for the person as well as the people around him/her to study because there are marked changes in the appearance, behavior and health of the affected individual.

Abuse and addiction of drugs is due to many factors wherein one of this is peer pressure. Abuse of drugs is not always a matter of innocence or faulty self-restraint. If people around you, your classmate or your friends are doing drugs, it can be difficult to abide the pressure they give to try them, especially with teenagers. Drug testing as a requirement for admission to schools could also help to stop the widespread of drug addiction among students or teenagers. “If before our teams focused on high schools before testing students in college or the vocational schools, now we’re doing the testing in all of them at the same time,” Education Assistant Secretary Thelma Santos said in an interview with the Philippine Daily Inquirer in their article titled Drug testing also covers vocational students.


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Answers in the Quiz on Transport Proteins

Objective Part:
1. Carrier proteins & 2. Carrier molecules . What are the other terms used that also imply to Transport Proteins?

3.Active transport is a type of protein substrate transport that requires chemicals or cellular energy to mediate a specific solute.

4. Passive transport is a type of protein substrate transport that passively travels biochemicals or molecular substances with the flow of the solvent across the cell membrane .

5. – 10. True or False:

True. The substrate or the molecule, chemical, ion or substance to be transported must first bind at a binding site of the carrier or transport protein molecules which it has a certain binding affinity.

True. Transport protein or Carrier molecules are generally firmly packed with polar region on the outside.

True. Polar regions from the outside of some specific molecules are utilized to intensify the solubility in water of most substance in the body that do not dissolve in water.

False. Via Transport Proteins, the substrate will be discharged at the appropriate site and all steps are irreversible.

False. After the substrate has associate to the transport protein molecule, it will take in and temporarily alter its molecular and chemical structure.

False. Transport proteins or Carrier molecules do not initiate the body regulation of the amount of specific biochemical processes.

Analysis Part:
Explain briefly how specific transport proteins recognize specific substances and the processes that occur or that are involved in the transportation of appropriate molecules.

The substrate or the molecule, chemical, ion or substance to be transported must first bind at a binding site of the carrier or transport protein molecules which it has a certain binding affinity. Each transport protein is very specific that are designed to recognize only one specific substance or one group of very similar substances.
After the substrate has associate to the transport protein molecule, it will take in and retain the substrate within its molecular structure and cause an internal shift for the substrate to face the other side of the carrier membrane. The substrate will be discharged at the appropriate site and all steps are reversible.


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Questions about Transport Proteins

PART 1: Objective Type

1._____________& 2.____________ What are the other terms used for Transport Proteins?

3. ____________ is a type of protein substrate transport that requires chemicals or cellular energy to mediate a specific solute.

4. ____________ is a type of protein substrate transport that passively carries biochemicals or molecular substances with the flow of the solvent across the cell membrane.

5. – 10. True or False:

______________ The substrate or the molecule, chemical, ion or substance to be transported must first bind at a binding site of the carrier or transport protein molecules to which it has a certain binding affinity with.

______________ Transport protein or Carrier molecules are generally firmly packed with polar regions on the outside.

______________ Polar regions from the outside of some specific molecules are utilized to intensify the solubility in water of most substances in the body that are not dissolved in water.

______________ Via Transport Proteins, the substrate will be discharged at the appropriate site and all steps are irreversible.

______________ After the substrate has associated with the transport protein molecule, it will temporarily alter its molecular and chemical structures.

______________ Transport proteins or Carrier molecules do not initiate the body regulation of the amount of specific biochemical processes.


PART 2: Analysis

Explain briefly how specific transport proteins recognize specific substances and the processes that occur or that are involved in the transportation of appropriate molecules.


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Transport via Protein Molecules

Transport proteins are also called as carrier proteins or carrier molecules which serve in vital function of body cells that carry specific materials, molecules or ions from one part of the body to another through the circulation or through intracellular compartments or in extracellular fluids. Transport proteins are often globular proteins wherein, these molecules play very important roles that initiate the body regulation of the amount of specific biochemical processes. Most transport proteins facilitates in the movement of specific molecules, chemicals or ions to pass through the cell membrane or plasma membrane.

Each transport protein is very specific that are designed to recognize only one specific substance or one group of very similar substances. The substrate or the molecule, chemical, ion or substance to be transported must first bind at a binding site of the carrier or transport protein molecules which it has a certain binding affinity. After the substrate has associate to the transport protein molecule, it will take in and retain the substrate within its molecular structure and cause an internal shift for the substrate to face the other side of the carrier membrane. The substrate will be discharged at the appropriate site and all steps are reversible.



Since a large number of materials in the body do not dissolve in water, transport protein molecules are generally firmly packed with polar region on the outside to intensify their solubility in water and mostly have non-polar region attached to the inside of the protein to keep water from penetrating and unfolding them.Some of the transport proteins channel a variety of body substances and some are transporters of small hydrophobic molecules which are water-soluble transport proteins that may or may not get across with biological membranes.

Substrate transportation ca be an Active transport or Passive transport:



Active transport involves movement of molecules or ions with the use of certain chemical energy (such as ATP) against the energy of the colliding molecules going through the plasma or cell surface.

Passive transport involves movement of molecules or ions with the flow of the substance molecules without energy required.

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References:

Clinical Chemistry A Fundamental Textbook Donald F. Calbreath
http://en.wikipedia.org/wiki/Transport_protein
http://dl.clackamas.edu/ch106-08/transpor.htm
http://en.wikipedia.org/wiki/Carrier_protein
http://www.college-cram.com/study/biology/presentations/371