Term
| What form of vitamin A is responsible for transport in the blood and what type of protein is it bound to in the blood versus intracellular transport? |
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Definition
| retinol is bound to PA(Pre-Albumin) in the blood circulation whereas it is always bound to RBP(Retinol Binding Protein) for transport within the cell. |
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Term
| What form of vitamin A has local hormone effects? |
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Definition
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Term
| What form of vitamin A is primarily for storage? |
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Definition
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Term
| What form of vitamin A is responsible for visual transduction? |
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Definition
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Term
| What form of vitamin A is involved in DNA synthesis? |
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Definition
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Term
| What is the term for an extremly dry eye that can result in blindness and is due to vitamin A deficiency? |
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Definition
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Term
What are three potential side effects of vitamin A deficiency? |
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Definition
1) nyctalopia-night blindness, perhaps long dark adaptation times 2) xerosis-extreme dry eye leading to blindness 3) keratomalica-degeneration of corneal epithelium to the point of holes in it leading to blindness |
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Term
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Definition
| an antioxidant in the disc cell membrane that protects DHA |
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Term
| Which carbon is missing a hydroxy group in deoxyribose? |
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Definition
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Term
| What do you call adenine + sugar only? Guanine + sugar only? Cytosine + sugar? Thymine + sugar? |
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Definition
adenosine guaonosine cytidine thymidine All are nucleosides. |
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Term
| What two enzymes hydrolyze the RNA portion of the primer and complete the gaps of the Okazaki fragments to form a continuous strand? |
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Definition
| DNA polymerase I and ligase |
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Term
| What form must ribose be converted to be activated for incorporation into a nucleotide? |
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Definition
| PRPP (5-phosphoribosyl-1-pyrophosphate) |
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Term
| Does mRNA contain introns? |
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Definition
| No, they are spliced out before hRNA becomes mRNA. |
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