Active transport systems generally involve specific binding molecules that are
1.lipids
2.proteins
3.carbs
4.nucleic acids
5.polyphosphates
Answer: 2.Proteins
1.lipids
2.proteins
3.carbs
4.nucleic acids
5.polyphosphates
Answer: 2.Proteins
Formation of enamel and dentin requires adequate amounts of all these vitamins EXCEPT
1. A
2. C
3. D
4. E
pLEASE explain teh answers.
Formation of enamel and dentin requires adequate amounts of all these vitamins EXCEPT
1. A
2. C
3. D
4. E
pLEASE explain teh answers.
Active transport systems generally involve specific binding molecules that are
1.lipids
2.proteins
3.carbs
4.nucleic acids
5.polyphosphates
Active transport is the process of movement of a fluid from an area of lesser concentration (Hypotonic), to an area of greater concentration (Hypertonic). This process requires energy and enzymes; a specific molecule called "carrier molecule" binds with each ion to be transported into or out of the cell against the concentration gradient Active transport is the mediated process of moving molecules and other substances across membranes.When particles are being moved from areas of low concentration to areas of high concentration(ie. against the concentration gradient) then specific carrier proteins in the membrane are required to move these particles. The carrier proteins bind to specific molecules (eg. glucose) and transport them into the cell where they are released. Energy is required for this process so this is known as Active Transport.
So the answer is carbs (3)
Hope this helps. If wrong please correct me!!
Active transport systems generally involve specific binding molecules that are
1.lipids
2.proteins
3.carbs
4.nucleic acids
5.polyphosphates
Active transport is the process of movement of a fluid from an area of lesser concentration (Hypotonic), to an area of greater concentration (Hypertonic). This process requires energy and enzymes; a specific molecule called "carrier molecule" binds with each ion to be transported into or out of the cell against the concentration gradient Active transport is the mediated process of moving molecules and other substances across membranes.When particles are being moved from areas of low concentration to areas of high concentration(ie. against the concentration gradient) then specific carrier proteins in the membrane are required to move these particles. The carrier proteins bind to specific molecules (eg. glucose) and transport them into the cell where they are released. Energy is required for this process so this is known as Active Transport.
So the answer is carbs (3)
Hope this helps. If wrong please correct me!!
If teh pH becomes lower than the isoelectric point of a protein,then hwo will teh protein respond in an electrophoretic system. It will,
1. become denatured
2. migrate to negative pole
3. migrate to positive pole
4. remain stationary and unchanged
5. separate into its different monomeric forms
Hi
The answer is 2( will migrate to negative pole)
Explaination: The pH of an electrophoretic gel is determined by the buffer used for that gel. If the pH of the buffer is above the pI(isoelectric point) of the protein being run, the protein will migrate to the positive pole (negative charge is attracted to a positive pole). If the pH of the buffer is below the pI of the protein being run, the protein will migrate to the negative pole of the gel (positive charge is attracted to the negative pole). If the protein is run with a buffer pH that is equal to the pI, it will not migrate at all. This is also true for individual amino acids.
Hope this helps u.
Hi,
Each of the following polymers is correctly paired with its component precursor EXCEPT one. Which si teh Exception?
POLYMER COMPONENT
1. Dextran Sucrose
2. Glycogen Fructose
3. Mutan Sucrose
4. Glycogen UDP - glucose
5. Levan Sucrose
Correct answer is 2. Glycogen fructose
Explanation: Glycogen if a homopolymer of glucose. other combinations like in aswers 1,3,4,5 are correct
1. Dextran Sucrose - homopolymer of glucose formed from hydrolysis of sucrose.
2. Glycogen Fructose-homopolymer of glucose linked by alpha-1,4glycosidic bonds.
3. Mutan Sucrose - homopolymer of fructose formed from hydrolysis of sucrose.
4. Glycogen UDP - glucose- see last step of glycogen synthesis.
5. Levan Sucrose - homopolymer of glucose formed from hydrolysis of sucrose.
-Roni.
A person who has a long history of anabolic steroid abuse but has recently stopped is likely to exhibit each of the following characteristics EXCEPT one. Which one is this EXCEPTION?
a. Sterility
b. Low FSH levels
c. Low testosterone levels
d. decreased number of spermatids
Cortisol stimulates synthesis in the liver of
a. glucokinase
b. phosphofructokinase
c. pyruvate carboxylase
d. pyruvate kinase
Which of the following substances is the predominant source of ATP at Moderate levels (greater than 20 minutes of aerobic exercise) of muscle activity?
a. Amino acids
b. Fatty acids
c. Carbohydrates
d. Protiens
Can someone explain hwo to solve teh pH problems...
such as
calculating the hydrgogen ion concentration of a urine sample of pH 5.7
hey please help with these.i had posted them earlier also.....
A person who has a long history of anabolic steroid abuse but has recently stopped is likely to exhibit each of the following characteristics EXCEPT one. Which one is this EXCEPTION?
a. Sterility
b. Low FSH levels
c. Low testosterone levels
d. decreased number of spermatids
Hey iam not ver sure of this but I think the answer should be 1(sterility)
Advers effect of anabolic steroid: Development of breast tissue in males, a condition called gynecomastia (which is usually caused by high levels of circulating estrogen), may arise because of increased conversion of testosterone to estrogen by the enzyme aromatase. Reduced sexual function and temporary infertility can also occur in males. Another male-specific side effect which can occur is testicular atrophy, caused by the suppression of natural testosterone levels, which inhibits production of sperm (most of the mass of the testes is developing sperm). This side effect is temporary: the size of the testicles usually returns to normal within a few weeks of discontinuing anabolic steroid use as normal production of sperm resumes. Female-specific side effects include increases in body hair, deepening of the voice, enlarged clitoris, and temporary decreases in menstrual cycles. When taken during pregnancy, anabolic steroids can affect fetal development by causing the development of male features in the female fetus and female features in the male fetus.
Read this and please let me know the correct answer.....If iam wrong.
The rapid emergence of new strains of human immunodeficiency virus is primarily the result of
1.The frequent genomic recombination between human immunodeficiency virus and other retroviruses
2.Frequent errors in the translation of viral proteins
3.The lack of immune response to the viral envelope glycoprotein
4.Frequent errors introduced by viral reverse transcriptase
5.The imprecision of protein cleavage by viral protease
Three days ago, a patient received her third immunization with tetanus toxoid. What class of antibodies specific for tetanus toxoid would one expect to find in her serum?
1.Similar concentrations of IgM and IgG
2.High concentrations of both IgM and IgD
3.Low concentrations of IgM; high concentration of IgE
4.Low concentration of IgM; high concentration of IgG
5.High concentration of IgM; low concentration of IgG
Rough pneumococci grown in the presence of DNA from dead smooth pneumococci develop capsules. This is an example of bacterial
1.Mutation
2.Dominance
3.Conjugation
4.Transduction
5.Transformation
Each of the following is characteristic of herpes zoster EXCEPT one. Which one is the EXCEPTION
1.Unilateral
2.Usually involves 1-3 dermatomes
3.Occurs repeatedly in immunocompetent patients
4.Only occurs in an individual having a latent VZV infection
5.More common in individuals who are immunocompromised
In fermentation, the final electron acceptor is
1.Water
2.Oxygen
3.Carbon dioxide
4.An organic compound
5.An inorganic compound
The antigenic component of which of the following vaccines is a capsular antigen
1.Influenza
2.Poliovirus
3.Hepatitis B
4.Haemophilus influenza
Which of the following is produced when a mutation occurs in an enzyme controlling a signal pathway involved in cell growth processes
1.Epigene
2.Antigene
3.Oncogene
4.Monogene
5.Transgene
Which of the following streptococcal virulence factors acts as a superantigen, mediating a variety of cytokine-induced effects that can result in life-threatening disease?
1.Pyrogenic exotoxin
2.Hyaluronidase
3.Streptokinase
4.Streptolysin O
Each of the following viruses is potentially capable of causing cell transformation EXCEPT one. Which one is this EXCEPTION?
1.Retrovirus
2.Herpesvirus
3.Picornavirus
4.Hepatitis B virus
5.Human papillomavirus
Which of the following represents the consequence of the fact that DNA strans are complementary?
1.Hairpin loop structures can be generated
2.They will always have identical sequences
3.Separated strands are able to reassociate
4.They cannot get back together once separated
Which of the following predominates in steroid producing cells?
1.Smooth endoplasmic reticulum
2.Rough endoplasmic reticulum
3.Golgi apparatus
4.Phagosomes
5.Nucleolus
hey please help with these.i had posted them earlier also.....
A person who has a long history of anabolic steroid abuse but has recently stopped is likely to exhibit each of the following characteristics EXCEPT one. Which one is this EXCEPTION?
a. Sterility
b. Low FSH levels
c. Low testosterone levels
d. decreased number of spermatids
For which is teh first group of teh following pairs more likely to be located on teh surface of a globular protein than the second group of teh pair?
1. -CONH2 -COO-
2. -CH3 -CH(CH3)2
3. -CH2OH -NH4
4. -CH3 -CH2OH
5. -CH2SH -COO-
A person who has a long history of anabolic steroid abuse but has recently stopped is likely to exhibit each of the following characteristics EXCEPT one. Which one is this EXCEPTION?
a. Sterility
b. Low FSH levels
c. Low testosterone levels
d. decreased number of spermatids
Hey iam not very sure of this but I think the answer to be 1(sterility)
Advers effect of anabolic steroid: Development of breast tissue in males, a condition called gynecomastia (which is usually caused by high levels of circulating estrogen), may arise because of increased conversion of testosterone to estrogen by the enzyme aromatase. Reduced sexual function and temporary infertility can also occur in males. Another male-specific side effect which can occur is testicular atrophy, caused by the suppression of natural testosterone levels, which inhibits production of sperm (most of the mass of the testes is developing sperm). This side effect is temporary: the size of the testicles usually returns to normal within a few weeks of discontinuing anabolic steroid use as normal production of sperm resumes. Female-specific side effects include increases in body hair, deepening of the voice, enlarged clitoris, and temporary decreases in menstrual cycles. When taken during pregnancy, anabolic steroids can affect fetal development by causing the development of male features in the female fetus and female features in the male fetus.
Read this and please let me know the correct answer.....If iam wrong.
please read the question...they have asked for the "Exception". Not what happens!!
see now lets review the choices and try to see from that. steroid hormones when we give them body stops using its own glands to produce it and hence there is atrophy of the glands. now that the gland size has decreased we stop giving the steroids. so what will happen. 1. body wants the hormone so it releases releasing or stimulating hormones. so in this case FSH would increase.
2. level of FSH is low so there would be decresed amount of spermatogonia
3. gland has hypotrophy so there would be less testosterone produced
4 in extreme cases there can be complete atrophy of the gland causing sterility if the steroid admin is long term and sudden withdrawl.
now the only thing thats against the choices is decreased levels of FSH instead of this there is an increase of FSH when there is steroid withdrawl
i hope its a little more clear now
hi can u pls. explain concept again , i cant get it.see now lets review the choices and try to see from that. steroid hormones when we give them body stops using its own glands to produce it and hence there is atrophy of the glands. now that the gland size has decreased we stop giving the steroids. so what will happen. 1. body wants the hormone so it releases releasing or stimulating hormones. so in this case FSH would increase.
2. level of FSH is low so there would be decresed amount of spermatogonia
3. gland has hypotrophy so there would be less testosterone produced
4 in extreme cases there can be complete atrophy of the gland causing sterility if the steroid admin is long term and sudden withdrawl.
now the only thing thats against the choices is decreased levels of FSH instead of this there is an increase of FSH when there is steroid withdrawl
i hope its a little more clear now
hi can u pls. explain concept again , i cant get it.see now lets review the choices and try to see from that. steroid hormones when we give them body stops using its own glands to produce it and hence there is atrophy of the glands. now that the gland size has decreased we stop giving the steroids. so what will happen. 1. body wants the hormone so it releases releasing or stimulating hormones. so in this case FSH would increase.
2. level of FSH is low so there would be decresed amount of spermatogonia
3. gland has hypotrophy so there would be less testosterone produced
4 in extreme cases there can be complete atrophy of the gland causing sterility if the steroid admin is long term and sudden withdrawl.
now the only thing thats against the choices is decreased levels of FSH instead of this there is an increase of FSH when there is steroid withdrawl
i hope its a little more clear now
hi can u pls. explain concept again , i cant get it.
u said that FSH level will increase but at same time at point no. 2 u acknowledged that level of FSH is low which cause spermatogonia.
3. gland has hypertophy and 4. gland has atrophy on long term use
this is confusing , can u please explain.
Actually what i know is FSH and testosterone both enhance spermatogenesis . so decrease in their level will decrease spermatogenesis also.
But i cant locate correct answer. help me
thanks i appreciate ur help and all the best for examFSH enhances spermatogenesis by stimulating the follicles. right?
now when is FSH released? when we need testosterone right???
now if we have steroid hormones in the blood. it will tell the brain that we are totally packed so cancel the next order. so FSH doesnt release that much anymore. right?
now FSH doesnt release so there would be hypotrophy or atrophy on long term use.
now next scenario is when we stop taking steroids. thats what the question is dealing wiht.
so FSH was low. and there would be less amount of testosterone in the body. when we stop taking steroids think of it as walmart which doesnt have that much milk anymore. so walmart will call for extra milk (testosterone) so there would stimulation of Pituitary so that more FSH is released so that testosterone can be generated. so right after withdrawl there would be decreased amount of testosterone but at the same time because of that there owuld be increased amount of FSH.... dude i am exhausted i hope it is clear now
and second point was when we were taking steroids thats why it was low.
Totally makes sense now!!Thanks for your patience and time...FSH enhances spermatogenesis by stimulating the follicles. right?
now when is FSH released? when we need testosterone right???
now if we have steroid hormones in the blood. it will tell the brain that we are totally packed so cancel the next order. so FSH doesnt release that much anymore. right?
now FSH doesnt release so there would be hypotrophy or atrophy on long term use.
now next scenario is when we stop taking steroids. thats what the question is dealing wiht.
so FSH was low. and there would be less amount of testosterone in the body. when we stop taking steroids think of it as walmart which doesnt have that much milk anymore. so walmart will call for extra milk (testosterone) so there would stimulation of Pituitary so that more FSH is released so that testosterone can be generated. so right after withdrawl there would be decreased amount of testosterone but at the same time because of that there owuld be increased amount of FSH.... dude i am exhausted i hope it is clear now
and second point was when we were taking steroids thats why it was low.
thanks i appreciate ur help and all the best for exam
i more question that during aerobic execercise greater than 15 mts. - fatty acids are used [ according to u]
but what i read in Kaplan that for few sec to a mt. ATP store and creatinine phosphate are used , for aerobic [ moderate ] carbohydrates are consumed and than for greater than half hr fatty acids and glyconeogenesis takes place.
please put some shadow on this
why? why the answer is this. Because I read from the First Aid that zoster-recurrent usually localized to a single dermatome.Each of the following is characteristic of herpes zoster EXCEPT one. Which one is the EXCEPTION
1.Unilateral
2.Usually involves 1-3 dermatomes
3.Occurs repeatedly in immunocompetent patients
4.Only occurs in an individual having a latent VZV infection
5.More common in individuals who are immunocompromised
Answer: 3.Occurs repeatedly in immunocompetent patients