Fat soluble vitamins and health - Vitamin A
31 important questions on Fat soluble vitamins and health - Vitamin A
What are the 4 forms of vitamin A?
- Retinol (most of the vitmain A)
- Retinyl ester, retinol that is stoared in the fat tissue of the body (more stable then retinol)
- Retinal, oxydised form of aldehyde compound
- Retinoic acid, oxidized for of retinal
What is beta carotene?
From what sources do you get vitamin A and form what sources pro vitamin a?
Pro vitamin A: comes form plants in the form of carotenoids.
- Higher grades + faster learning
- Never study anything twice
- 100% sure, 100% understanding
For my 1st exam I got a C. Then, I started looking for ways to learn better and I came across Study Smart. Since then I have scored a A+, A, A- and another A. I highly recommend it to everyone who wants to hear it. I am so happy with it!!
I was struggling to finish all my first-year subjects for 3 years. Then I discovered Study Smart, which helped me to finish all of them within 3 months.
Because of StudySmart, things are going well in many ways. Before, I always had study stress and no time for anything. Now I feel calm and confident (because of the program). I used to score a B, now I usually score an A or A+.
Hey Chris, I really want to thank you very much for developing the platform, I usually got around C for my exams, now I scored an A+, an A and a A- !!
Since using Study Smart, my average has increased significantly. I even completed a statistics course with a A+ while I'm bad at statistics. I took on extra courses this year, because of Study Smart. Thanks so much!
Ever since I started studying with StudySmart I passed all my exams !!! No more re-sits!! At first, I was happy with a pass and now I only get good grades. Many thanks!
I aced all the courses I studied with Study Smart. For law, I first scored a D, and now an A! I’m 100% sure that I’ll pass all the courses I study with Study Smart.
I always thought I studied well. My grades were fine. I could never have imagined that applying these study skills would have such a huge and direct impact on my grades, my speed and the pleasure I have in learning.
For the first time, I finally feel totally confident about the way I learn. I have the perfect overview and make great progress in terms of speed and the grades I get. Thanks, Chris!
I immediately started to enjoy learning again, and my grades soared. All of a sudden, everything went better. I highly recommend Study Smart to all students..
Being able to create my materials online made the process of studying so much smoother and quicker. I no longer have to spend a huge amount of my time on creating my summaries.
At first, my notes were a mess. Now I use Study Smart to take my notes in a perfectly structured way. It helps me to save a lot of time and do other things I enjoy.
Students that study with Study Smart get better grades. The system applies all the learning methods in such a way that both well-performing students and students who struggle perform much better.
Hi Chris, I would like to thank you very much. Last year I scored C on a course, and this year I got an A+ thanks to your method! Thank you very much!
The largest effect is that my child is more enthusiastic about school! Every parent wants their children to be happy at school, Study Smart made it happen.
In high school, I failed several exams, and that has really changed now. I actually needed this tool very much back then. Since I started studying with StudySmart, I haven't had any D's. My average score is now an A and those are results I would have never had in the past
With my old method, I passed only 3 out of 8 courses. Since I started taking my notes digitally in Study Smart, I have passed all my courses on the first try. For me, StudySmart takes away the stress of wondering if I will pass or not.
Thanks to StudySmart, I passed all my exams, and with better grades than before! On top of that, I have mastered a very good study method now, which I am confident will help me earn my degree.
In what form is vitamin a stored in the liver?
In what liver cells in vitamin A storred?
What happens to the enzyme splitting beta-carotene when you eat a lot of vitamin a?
How does vitamin A travel trough the blood?
How is excretion of the retinol bound to a transport protein by urine prevented?
How does the RBP-TTR-retinol complex deliver retinol?
What are the main functions of vitamin A?
- Promoting vision
- Participating in protein synthesis and cell differentiation (and thereby maintaining the health of epithelial tissues and skin)
- Supporting reproduction, growth and immune system functioning
What is the main funciton of retinol?
What is the main function of Retinoic acid?
What is the main function of retinal?
What is the influence of vitamin A on vision?
How does the conversion of light into an nerve puls with vitamin A go?
A signal is generated because of the change in structure of 11-cis-retenal. It becomses all trans retinal and the retinal is released/ This is called bleaching. A signal is send to the visial center of the brain.
The all trans retenal can change back to a 11-cis-retenal and bind to the opsins agian. So the signal can repeat itself.
What are the different cells in which vitamin a influences the protein synthesis?
What vitamin A's regualte genes?
What are the nuclear receptors that vitmamin A used in gene regulation bind to?
How does RXR and RAR bind to DNA?
RXR and RAR form a receptor complex witch can bind with the DNA.
RXR can also bind with thyroid hormone, bile acid vitamin D and faty acid.
All of these complexes have a different fuction and bind to a different sequence in the DNA.
What acounts for the diversity in actions of vitamin A in the body?
It is able to turn on a large number of geners in a veriety of tissues in the body.
Where is a lot of vitamin A deficiency and what are the concequences?
How are the symtoms of a toxic overdose of vitamin A called and what are they?
Overdose
It causes nausea, vomiting, headaches,
High over dose:
Drowsiness, malaise, itching and exfoliation of the skin.
How much vitamin A do you need to eat a day in order to get toxidity?
Why should pregnant women stay away from vitamin A suplements?
Why did explorers not eat the liver of a polarbear?
What can happen if you eat a over load of carotes?
However you can get carotenemia, a harmless condition with witch your skin turns yellow.
What is the top vitamin A sources in the us and what it the top source of provatiamin A?
dairy products, liver, fish, and fortified cereals
provitamin A:
carrots, broccoli, cantaloupe, and squash.
What are vitamin A suplements usualy a mix of?
How many gram of mixed carotenoids is equual to 1 microgram of preformed retinol?
How many grams of beta-carotene is used to get 1 microgram of retinol?
What is the RDI for vitamin A?
Try our study magic for free
a PDF, study it super fast
- No sign up, email or credit card needed!
- AI makes unlimited flashcards
- Get unlimited quizzes and tests
- Ask AI anything
- No sign up, email or credit card needed!
- Have and keep perfect overview
- Make flashcards, notes and mind maps
- Review, test and score!
The question on the page originate from the summary of the following study material:
- A unique study and practice tool
- Never study anything twice again
- Get the grades you hope for
- 100% sure, 100% understanding
