Description : The ability of the eye to see in the dark, is due to the production of a purple pigment known as (1) Carotene (2) Rhodopsin (3)Iodopsin (4) Retinene
Last Answer : (4) Retinene Explanation: Retinene-1 is better known as retinaldehyde or simply retinal and is fundamental in the transduction of light into visual signals in the photoreceptor level of the retina (known as the visual cycle). Retinene-2 is more formally known as dehydroretinaldehyde.
Description : The ability of the Eye to see in the dark, is due to the production of a purple pigment known as----? A. Carotene B. Rhodopsin C. Iodopsin D. Retinene (Answer)
Last Answer : D. Retinene (Answer)
Description : The pigment which gives colour to the human skin is – (1) Melanin (2) Rhodopsin (3) Iodopsin (4) Anthocyanin
Last Answer : (1) Melanin Explanation: Human skin color is primarily due to the presence of melanin in the skin. Skin color ranges from almost black to white with a pinkish tinge due to blood vessels underneath. In animals melanin pigments are derivatives of the amino acid tyrosine.
Description : Which one of the following is the correct difference between rod cells and cone cells of our retina? Rod cells Cone cells (a) Overall Vision in poor Colour vision function light and detailed ... of retina all over retina (c) Visual acuity High Low (d) Visual pigment Iodopsin Rhodopsin contained
Last Answer : (a) Overall Vision in poor Colour vision function
Description : The pigment which gives colour to the human skin is (1) Melanin (2) Rhodopsin (3) Iodopsin (4) Anthocyanin
Last Answer : Melanin
Description : Retinoic acid is involved in the synthesis of (A) Rhodopsin (B) Iodopsin (C) Porphyrinopsin (D) Glycoproteins
Last Answer : Answer : D
Description : Retinoic acid participates in the synthesis of (A) Iodopsin (B) Rhodopsin (C) Glycoprotein (D) Cardiolipin
Last Answer : Answer : C
Description : Retinal is a component of (A) Iodopsin (B) Rhodopsin (C) Cardiolipin (D) Glycoproteins
Last Answer : Answer : B
Description : The purplish red pigment rhodopsin contained in the rods type of photoreceptor cells of the human eye, is a derivative of
Last Answer : The purplish red pigment rhodopsin contained in the rods type of photoreceptor cells of the human eye, is a ... Vitamin B 1 C. Vitamin C D. Vitamin D
Description : The non-protein part of rhodopsin is (A) Retinal (B) Retinol (C) Carotene (D) Repsin
Last Answer : Answer : A
Description : Non-protein part of rhodopsin is (A) Retinal (B) Retinol (C) Carotene (D) Repsin
Description : A person deficient in Rhodopsin (visual pigment) should take -
Last Answer : A person deficient in Rhodopsin (visual pigment) should take - A. Tomatoes B. Radish C. Carrots D. Guavas
Description : Retina contains this photo sensitive pigment. (A) Rhodopsin (B) Opsin (C) Retinol (D) Malanin
Description : Retina contains this photosensitive pigment: (A) Rhodopsin (B) Opsin (C) Retinol (D) Melanin
Description : Rhodopsin: a. is a red pigment b. is least sensitive to red light c. is regenerated when the eyes are closed d. all above
Last Answer : all above
Description : Photosensitive compound in human eye is made up of (a) opsin and retinol (b) transducin and retinene (c) guanosine and retinol (d) opsin and retinal.
Last Answer : (d) opsin and retinal.
Description : Which one of the following is the respiratory pigment in man? (1) Haernocyanin (2) Haemoerythrin (3) b-Carotene (4) Haemoglobin
Last Answer : (4) Haemoglobin Explanation: A respiratory pigment is a molecule, such as hemoglobin in humans, which increases the oxygencarrying capacity of the blood. The four most common invertebrate respiratory pigments are hemoglobin, haemocyanin, haemerythrin and chlorocruorin.
Description : A pigment which absorbs red and far-red light is (a) cytochrome (b) xanthophyll (c) phytochrome (d) carotene.
Last Answer : (c) phytochrome
Description : Pseudomonas aeruginosa forms a blue water soluble pigment called A-pyocyanin B- chlororaphin C- pyoverdin D-β-carotene
Last Answer : pyocyanin
Description : Which one of the following is the respiratory pigment in man ? (1) Haemocyanin (2) Haemoerythrin (3) b-Carotene (4) Haemoglobin
Last Answer : Haemoglobin
Description : Most of the red; blue and purple colours of plants are due to a pigment called?
Last Answer : anthocyanin
Description : If you like pretty gems that sparkle and shine, I invite you to dig in my virtual mine. My first is purple, fit for a king, My second is green where Dorothy did her thing. My third is red, July's ... gem, one letter in its turn, And you will find the stuff for which even the god's yearn. -Riddles
Last Answer : Ambrosia The gems are: Amethyst Emerald ( Emerald City in the Wizard of Oz ) Ruby Pearl Diamond Tiger's eye Cubic Zirconium (Fake diamond) Black Opal Taking the first letter of Amethyst, second of Emerald, etc.. gives Ambrosia - The food of the gods.
Description : The following are true about dark adaptation: a. only regeneration of rhodopsin is responsible b. adaptation usually takes about 20 minutes c. dilatation of pupil plays a part in dark adaptation d. it is better with the fovea than the peripheral retina
Last Answer : dilatation of pupil plays a part in dark adaptation
Description : Metalloenzyme-retinene for polymerization of insulin is (A) Copper (B) Zinc (C) Cobalt (D) Manganese
Description : Retinal is reduced to retinol by retinene reductase in presence of the coenzyme (A) NAD+ (B) NADP+ (C) NADH + H+ (D) NADPH + H+
Description : Retinal is converted into retinoic acid in the presence of (A) Retinal oxidase (B) Retinal carboxylase (C) Retinene reductase(D) Spontaneously
Description : The organism commonly used for the production of carotene is/ are β A- Phycomycesblakesleeanus B- Phycomycesblakesleeanus C- Blakesleatrispora D- all of these
Last Answer : all of these
Description : True statements about EOG (electro-oculogram) include: a. the EOG light-peak to dark-trough ratio is reduced in central retinal vein occlusion b. the light peak of EOG is abnormal in Best' ... rise is produced by depolarization of the basal membrane of the retinal pigment epithelium d. all above
Description : The colour of the carrots is due to the presence of – (1) Carotene (2) Chlorophyll (3) Phycocyanin (4) Phycoerythirn
Last Answer : (1) Carotene Explanation: Carotenes are photosynthetic pigments that are responsible for the orange colour of the carrot, for which this class of chemicals is named. Some carrots are yellow due to ... are also responsible for the orange (but not all of the yellow) colours in dry foliage.
Description : The colotr of cow's milk is slightly yellow due to the presence of - (1) Xanthophyll (2) Riboflavin (3) Ribulose (4) Carotene
Last Answer : (4) Carotene Explanation: Yellow milk is commonly related to the diet that that cow is on. Grass is the most common diet that will turn milk (and fat) yellow, due to a compound in the grass ... the vibrant. colours they are, and this carries through the body of the grazer that eats these plants.
Description : Yellow colour of cow milk is due to : D A. Riboflavin B. Lactose C. Casein D. Carotene
Last Answer : Carotene
Description : Red colour of carrot is due to : a. Lycopene b. Carotene c. Anthocyanin d. Propanene
Description : Yellow color of turmeric is due to — a. Curcamin b. Lycopene c. Casin d. Carotene
Last Answer : a. Curcamin
Description : The colour of the carrots is due to the presence of (1) Carotene (2) Chlorophyll (3) Phycocyanin (4) Phycoerythirn
Description : The colour of cow’s milk is slightly yellow due to the presence of (1) Xanthophyll (2) Riboflavin (3) Ribulose (4) Carotene
Description : 5 ft tall weed with dark purple stem and broad leaves about 4 -5 inches across
Last Answer : Need Answer
Description : A dark purple compound used as an antiseptic and disinfectant is (a) Potassium nitrate (b) Sodium thiosulphate (c) Potassium permanganate (d) Calcium phosphate
Last Answer : Ans:(c)
Description : Which of the following statements regarding Vitamin A is true? (A) It is not an essential Vitamin (B) It is related to tocopherol (C) It is a component of rhodopsin (D) It is also known as Opsin
Description : In which part of the eye lies the pigment, that decides the colour of the eyes of a person? -Do You Know?
Last Answer : answer:
Description : In which part of the eye lies the pigment that decides the colour of the eyes of a person’? (1) Corea (2) Choroid (3) Iris (4) Vitreous body
Last Answer : (3) Iris Explanation: The iris is a thin, circular structure in the eye, responsible for controlling the diameter and size of the pupils and thus the amount of light reaching the retina. "Eye color" is ... the center of the iris, known as the pupil. The larger the pupil, the more light can enter,
Description : The colour of the eye depends upon the pigment present in - (1) cornea (2) iris (3) rods (4) cones
Last Answer : (2) iris Explanation: Eye colour is a polygenic phenotypic character determined by 2 distinct factors: the pigmentation of the eye's iris and the frequency-dependence of the scattering of light by the ... iris stroma (located at the front of the iris), and the cellular density of the stroma.
Description : In which part of the eye lies the pigment that decides the colour of the eyes of a person--? A. Retina B. Iris (Answer) C. Cornea D. Pupal
Last Answer : B. Iris (Answer)
Description : In which part of the eye lies the pigment, that decides the colour of the eyes of a person?
Last Answer : Choroid
Description : Which colored eye doesn't have pigment?
Last Answer : Blue
Description : The colour of the eye depends upon the pigment present in (1) cornea (2) iris (3) rods (4) cones
Last Answer : iris
Description : In which part of the eye lies the pigment that decides the colour of the eyes of a person? (1) Cornea (2) Choroid (3) Iris (4) Vitreous body
Last Answer : Iris
Description : Ability of the eye to see objects at all distances is called (a) Binocular vision (b) Myopia (c) Hypermetropia (d) Accommodation
Last Answer : Ans:(d)
Description : The ability of the eye to change the focal length of its lens to see distant object is _______ a)accommodation b)adjustment c)change d)pinch
Last Answer : a)accommodation
Description : I have an eye in the middle of me, but as you see, I cannot see. I am dark and not far away. You don't see me every day. I am not night and I am not bright. I can have twists and water and scares. What am I? -Riddles
Last Answer : A hurricane.