Which cell disorder in our body is responsible for colour blindness? (1) WBC (2) Cone cell (3) Red Cell (4) Neuron

Which cell disorder in our body is responsible for colour blindness? (1) WBC (2) Cone cell (3) Red Cell (4) Neuron
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(2) Cone cell Explanation: Colour vision deficiency, commonly called colour blindness, results from a malfunction or absence of cone cells in the retina. Cone cellsare one of three types of photoreceptor cells in the retina of the human eye that is responsible for colour vision and function best in relatively bright lights.
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Which cell disorder in our body is responsible for colour blindness? (1) WBC (2) Cone cell (3) Red Cell (4) Neuron

Description : Which cell disorder in our body is responsible for colour blindness? (1) WBC (2) Cone cell (3) Red Cell (4) Neuron

Last Answer : Cone cell

A man with colour blindness will see red as - (1) Yellow (2) Blue (3) Green (4) Violet

Description : A man with colour blindness will see red as - (1) Yellow (2) Blue (3) Green (4) Violet

Last Answer : (3) Green Explanation: Colour-blindness is the inability to distinguish the differences between certain colours. This condition results from an absence of colour-sensitive pigment in the cone cells of the ... type is red-green colour-blindness, where red and green are seen as the same color.

The visual acuity is affected by: a. pupil size b. illumination of the target c. red-green colour blindness d. contrast

Description : The visual acuity is affected by: a. pupil size b. illumination of the target c. red-green colour blindness d. contrast

Last Answer : contrast

A man with colour blindness will see red as (1) Yellow (2) Blue (3) Green (4) Violet

Description : A man with colour blindness will see red as (1) Yellow (2) Blue (3) Green (4) Violet

Last Answer : Green

Haemophilia is a genetic disorder which lead to – (1) decrease in haemoglobin level (2) rheumatic heart disease (3) decrease in WBC (4) non-clotting of blood

Description : Haemophilia is a genetic disorder which lead to – (1) decrease in haemoglobin level (2) rheumatic heart disease (3) decrease in WBC (4) non-clotting of blood

Last Answer : (4) non-clotting of blood Explanation: Haemophilia is a mostly inherited genetic disorder that impairs the body's ability to make blood clots, a process needed to stop bleeding.

Which of the following is an example of pleiotropy? (a) Haemophilia (b) Thalassemia (c) Sickle cell anaemia (d) Colour blindness

Description : Which of the following is an example of pleiotropy? (a) Haemophilia (b) Thalassemia (c) Sickle cell anaemia (d) Colour blindness

Last Answer : (c) Sickle cell anaemia

A polygenic inheritance in human beings is (a) skin colour (b) phenylketonuria (c) colour blindness (d) sickle cell anaemia

Description : A polygenic inheritance in human beings is (a) skin colour (b) phenylketonuria (c) colour blindness (d) sickle cell anaemia

Last Answer : (a) skin colour

In human beings, multiple genes are involved in the inheritance of (a) sickle-cell anaemia (b) skin colour (c) colour blindness (d) phenylketonuria.

Description : In human beings, multiple genes are involved in the inheritance of (a) sickle-cell anaemia (b) skin colour (c) colour blindness (d) phenylketonuria.

Last Answer : ) skin colour

Multiple alleles control inheritance of (a) phenylketonuria (b) colour blindness (c) sickle cell anaemia (d) blood groups.

Description : Multiple alleles control inheritance of (a) phenylketonuria (b) colour blindness (c) sickle cell anaemia (d) blood groups.

Last Answer : (d) blood groups.

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 vision in bright light (b) Distribution More Evenly concentrated in distributed centre of retina all over retina (c) Visual acuity High Low (d) Visual pigment Iodopsin Rhodopsin contained

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

A/An disorder is characterized by serious temporary or ongoing changes in function, such as paralysis or blindness that are triggered by psychological factors rather than by any physical cause?

Description : A/An disorder is characterized by serious temporary or ongoing changes in function, such as paralysis or blindness that are triggered by psychological factors rather than by any physical cause?

Last Answer : Cataracts

_______, found in blood, is responsible for oxygen transportation. (1) WBC (2) Platelets (3) RBC (4) Plasma

Description : _______, found in blood, is responsible for oxygen transportation. (1) WBC (2) Platelets (3) RBC (4) Plasma

Last Answer : (3) RBC Explanation: Red Blood Cells (RBCs) are responsible for carrying oxygen and carbon dioxide in the blood. Also known as erythrocytes, they are specialized cells that circulate through the body and deliver oxygen to tissues.

Is colour blindness a good thing?

Description : Is colour blindness a good thing?

Last Answer : My husband and my father are both color blind, and I always find myself frustrated with their inability to make out the same colors that I can. Trying to choose paint for the walls or any comparable task becomes ... eyes. However, if it works for you and you can see the positive, I say run with it.

$ `X X^(C)` represents the genotype of a human femanle which acts as carrier of genes for colour blindness. ! Any change in the structure of a chromos

Description : $ `X X^(C)` represents the genotype of a human femanle which acts as carrier of genes for colour blindness. ! Any change in the structure of a chromos

Last Answer : $ `X X^(C)` represents the genotype of a human femanle which acts as carrier of genes for colour blindness ... is wrong D. If both As and R are wrong.

Which of the following tests is used for the diagnosis of ‘Colour-Blindness’ in people?

Description : Which of the following tests is used for the diagnosis of ‘Colour-Blindness’ in people?

Last Answer : Ishihara Test

Colour blindness is more common in men than women.

Description : Colour blindness is more common in men than women.

Last Answer : Ans: Women have the sex chromosomes XX, while men have the chromosomes XY. The gene for normal colour vision is found on the X-chromosome. If a woman has one Xchromosome with the gene ... colour vision gene. This is less probable mathematically than having just one X-chromosome missing the gene.

Give scientific reason of the following : a) Colour blindness is more common in men than in women b) Light coloured clothes are generally worn in summer c) A person is hurt more when he falls on hard ground than on soft d) Deforestation causes more floods e) The man-hole covers are generally round

Description : Give scientific reason of the following : a) Colour blindness is more common in men than in women b) Light coloured clothes are generally worn in summer c) A person is hurt more when he falls ... ground than on soft d) Deforestation causes more floods e) The man-hole covers are generally round

Last Answer : a) Colour blindness is more common in men than in women Women have the sex chromosomes XX, while men have the chromosomes XY. The gene for normal colour vision is found on the X- ... of flowing water. When these trees are cut the natural barriers ultimately vanish and more floods are caused

The colour blindness is more likely to occur in males than in females because (a) the Y-chromosome of males have the genes for distinguishing colours (b) genes for characters are located on the sex- chromosomes (c) the trait is dominant in males and recessive in females (d) none of these.

Description : The colour blindness is more likely to occur in males than in females because (a) the Y-chromosome of males have the genes for distinguishing colours (b) genes for characters are located on the sex- chromosomes (c) the trait is dominant in males and recessive in females (d) none of these.

Last Answer : (b) genes for characters are located on the sex- chromosomes

A woman with two genes for haemophilia and one gene for colour blindness on one of the ‘X’ chromosomes marries a normal man. How will the progeny be? (a) 50% haemophilic colour-blind sons and 50% normal sons. (b) 50% haemophilic daughters (carrier) and 50% colour blind daughters (carrier). (c) All sons and daughters haemophilic and colour- blind. (d) Haemophilic and colour-blind daughters.

Description : A woman with two genes for haemophilia and one gene for colour blindness on one of the X' chromosomes marries a normal man. How will the progeny be? (a) 50% haemophilic colour-blind sons ... ). (c) All sons and daughters haemophilic and colour- blind. (d) Haemophilic and colour-blind daughters.

Last Answer : (b) 50% haemophilic daughters (carrier) and 50% colour blind daughters (carrier).

.Which one of the following conditions in humans is correctly matched with its chromosomal abnormality/linkage? (a) Erythroblastosis fetalis - X-linked (b) Down’s syndrome - 44 autosomes + XO (c) Klinefelter’s syndrome - 44 autosomes + XXY (d) Colour blindness - Y-linked

Description : .Which one of the following conditions in humans is correctly matched with its chromosomal abnormality/linkage? (a) Erythroblastosis fetalis - X-linked (b) Down’s syndrome - 44 autosomes + XO (c) Klinefelter’s syndrome - 44 autosomes + XXY (d) Colour blindness - Y-linked

Last Answer : (c) Klinefelter’s syndrome - 44 autosomes + XXY

Study the pedigree chart of a certain family given below and select the correct conclusion which can be drawn for the character. (a) The female parent is heterozygous. (b) The parents could not have had a normal daughter for this character. (c) The trait under study could not be colour blindness. (d) The male parent is homozygous dominant.

Description : Study the pedigree chart of a certain family given below and select the correct conclusion which can be drawn for the character. (a) The female parent is heterozygous. (b) The parents could not ... The trait under study could not be colour blindness. (d) The male parent is homozygous dominant.

Last Answer : (a) The female parent is heterozygous.

A colour blind man marries a woman with normal sight who has no history of colour blindness in her family. What is the probability of their grandson being colour blind ? (a) Nil (b) 0.25 (c) 0.5 (d) 1

Description : A colour blind man marries a woman with normal sight who has no history of colour blindness in her family. What is the probability of their grandson being colour blind ? (a) Nil (b) 0.25 (c) 0.5 (d) 1

Last Answer : b) 0.25

Minute, circular discs floating in the blood, which carry oxygen to the tissues, and carbon dioxide away from them, are called (a) White blood corpuscles (WBC) (b) Red blood corpuscles (RBC) (c) Monophylls (d) Erythrocytes

Description : Minute, circular discs floating in the blood, which carry oxygen to the tissues, and carbon dioxide away from them, are called (a) White blood corpuscles (WBC) (b) Red blood corpuscles (RBC) (c) Monophylls (d) Erythrocytes

Last Answer : Ans:(b)

Vitamin A is responsible for (a) Rhodopsin (b) Night blindness (c) Pellagra (d) Cirrhosis

Description : Vitamin A is responsible for (a) Rhodopsin (b) Night blindness (c) Pellagra (d) Cirrhosis

Last Answer : (a) Rhodopsin

The mammalian cell that are known not to contain lysosomes are a. WBc b. RBc c. Platellet d. none of them

Description : The mammalian cell that are known not to contain lysosomes are a. WBc b. RBc c. Platellet d. none of them

Last Answer : RBc

low HGB low PLT and high WBC , peripheral smear shows blast cell with large nucleus and scant cytoplasm and some nucleoli -- positive meyloperoxidase test and negative esterase , DDx: - Acute lymphocytic - Acute myelocytic - Acute monocytic

Description : low HGB low PLT and high WBC , peripheral smear shows blast cell with large nucleus and scant cytoplasm and some nucleoli -- positive meyloperoxidase test and negative esterase , DDx: - Acute lymphocytic - Acute myelocytic - Acute monocytic

Last Answer : Acute myelocytic

What part of the neuron carries nerve impulses away from the cell body?

Description : What part of the neuron carries nerve impulses away from the cell body?

Last Answer : AXON – A Long Fibre that CARRIES IMPULSES AWAY FROM THE CELL BODY. Each neuron has only ONE AXON. The Axon Ends in a series of small swellings called AXON TERMINALS.

(4) Fundamental unit of nervous system Explanation: A neuron is a cell that carries electrical impulses. Neurons are the basic units of the nervous system and its most important part is the brain. Every neuron is made of a cell body (also called a soma), dendrites and an axon.

Description : (4) Fundamental unit of nervous system Explanation: A neuron is a cell that carries electrical impulses. Neurons are the basic units of the nervous system and its most important part is the brain. Every neuron is made of a cell body (also called a soma), dendrites and an axon.

Last Answer : Water cycle refers to - (1) an integrated attempt to recycle water in relatively arid regions (2) constant movement of water from ocean to land and back to ocean once again (3) ... management of water in areas excessively plagued with water-logging (4) water distribution in relatively dry area

The long extension of the cell body of the neuron is called

Description : The long extension of the cell body of the neuron is called

Last Answer : axon.

The short projections arising from the cell body of neuron are called

Description : The short projections arising from the cell body of neuron are called

Last Answer : dendrites.

The fundamental structural and functional unit of nerves system is a. axon b. dendrite c. cell body d. neuron

Description : The fundamental structural and functional unit of nerves system is a. axon b. dendrite c. cell body d. neuron

Last Answer : neuron

Which of the following types of cells have a latent ability to regenerate? a) Stable Stable cells have a latent ability to regenerate if they are damaged or destroyed and are found in the kidney, liver, and pancreas, among other body organs. b) Labile Labile cells multiply constantly to replace cells worn out by normal physiologic processes. c) Permanent Permanent cells include neurons — the nerve cell bodies, not their axons. Destruction of a neuron causes permanent loss, but axons may regenerate. d) Epithelial Epithelial cells are a type of labile cell that multiply constantly to replace cells worn out by normal physiologic processes.

Description : Which of the following types of cells have a latent ability to regenerate? a) Stable Stable cells have a latent ability to regenerate if they are damaged or destroyed and are found in the ... a type of labile cell that multiply constantly to replace cells worn out by normal physiologic processes.

Last Answer : a) Stable Stable cells have a latent ability to regenerate if they are damaged or destroyed and are found in the kidney, liver, and pancreas, among other body organs.

A pigment responsible for red colour in tomato

Description : A pigment responsible for red colour in tomato

Last Answer : Ans. Lycopene

Canthaxanthin pigment responsible for — colour in papaya a. White b. Yellow c. Red d. Pink

Description : Canthaxanthin pigment responsible for — colour in papaya a. White b. Yellow c. Red d. Pink

Last Answer : b. Yellow

The following are true about electroretinogram (ERG): a. the a-wave has negative deflection b. a wave is generated by the retinal pigment epithelium c. amacrine cells are responsible for the oscillatory potential d. it is possible to separate the cone and rod ERG

Description : The following are true about electroretinogram (ERG): a. the a-wave has negative deflection b. a wave is generated by the retinal pigment epithelium c. amacrine cells are responsible for the oscillatory potential d. it is possible to separate the cone and rod ERG

Last Answer : t is possible to separate the cone and rod ERG

Which plastid of cell is responsible for colour in plants?

Description : Which plastid of cell is responsible for colour in plants?

Last Answer : Ans. Chromoplast

which of the following statements is not true for scattering of light? (a) Colour of the scattered tight depends on the size of particles of the atmosphere. (b) Red light is least scattered in the atmosphere. (c) Scattering of light Lakes place as various colours of white light travel with different speed in fir. d) The fine particles in the atmospheric air scatter the blue, light more strongly than red. So the scattered blue light enters our eyes.

Description : which of the following statements is not true for scattering of light? (a) Colour of the scattered tight depends on the size of particles of the atmosphere. (b) Red light is least scattered in the ... air scatter the blue, light more strongly than red. So the scattered blue light enters our eyes.

Last Answer : (c) Scattering of light Lakes place as various colours of white light travel with different speed in fir.

What is the difference between a neuron and a glial cell?

Description : What is the difference between a neuron and a glial cell?

Last Answer : A: Neurons are the primary cells of the nervous system that transmit electrical and chemical signals, while glial cells are supportive cells that provide structural and nutritional support to neurons and help regulate their activity.

What is the difference between a neuron and a glial cell?

Description : What is the difference between a neuron and a glial cell?

Last Answer : A: Neurons are specialized cells that transmit electrical and chemical signals in the nervous system, while glial cells provide support and insulation for neurons and also play a role in immune defense.

What is the difference between a neuron and a glial cell?

Description : What is the difference between a neuron and a glial cell?

Last Answer : A: Neurons are specialized cells that transmit electrical and chemical signals in the nervous system, while glial cells provide support and protection for neurons, and help to maintain the proper functioning of the nervous system.

What is the difference between a neuron and a glial cell?

Description : What is the difference between a neuron and a glial cell?

Last Answer : A: Neurons are responsible for transmitting and processing information in the nervous system, while glial cells support and protect neurons.

$ Neuron means a nerve cell. ! Neurons are found in the brain.

Description : $ Neuron means a nerve cell. ! Neurons are found in the brain.

Last Answer : $ Neuron means a nerve cell. ! Neurons are found in the brain. A. If both As and R are correct and R ... , R is wrong D. If both As and R are wrong.

What is it called when the change in cell voltage occurs when a neuron is stimulated?

Description : What is it called when the change in cell voltage occurs when a neuron is stimulated?

Last Answer : Need answer

Cell regulation can be thought of as the effector side of cell communication. Most commonly cell regulation occurs by means of extracellular chemical messengers. Which of the following statement(s) is/are true concerning these messengers? a. Paracrine regulation involves a messenger which is produced and acts systemically b. The extracellular signal or stimulus is received by a receptor on or in the target cell c. Neurocrine regulation depends on a physical connection between the neuron and the target cell d. Most hormones, local mediators, and neurotransmitters readily cross the cell plasma membrane

Description : Cell regulation can be thought of as the effector side of cell communication. Most commonly cell regulation occurs by means of extracellular chemical messengers. Which of the following statement(s ... d. Most hormones, local mediators, and neurotransmitters readily cross the cell plasma membrane

Last Answer : Answer: b, c Depending on how the extracellular messenger arrives, cell regulation can be classified as paracrine, endocrine, or neurocrine. In paracrine regulation, a chemical messenger ... , local mediators, and neurotransmitters are water-soluble and cannot readily cross the plasma membrane

What is a nerve cell or neuron?

Description : What is a nerve cell or neuron?

Last Answer : Neuron is the structural and functional unit of nervous tissue.

The action potential of a neuron a. is initiated by efflux of Na+ b. is terminated by efflux of K+ c. declines in amplitude as it moves along the axon d. results in a transient reversal of the concentration gradient of Na+ across the cell membrane e. is not associated with any net movement of Na+ or K+ across the cell membrane

Description : The action potential of a neuron a. is initiated by efflux of Na+ b. is terminated by efflux of K+ c. declines in amplitude as it moves along the axon d. results in a transient reversal of the ... the cell membrane e. is not associated with any net movement of Na+ or K+ across the cell membrane

Last Answer : is terminated by efflux of K+

The most striking example of point mutation is found in a disease called (a) Down’s syndrome (b) sickle cell anaemia (c) thalassaemia (d) night blindness.

Description : The most striking example of point mutation is found in a disease called (a) Down’s syndrome (b) sickle cell anaemia (c) thalassaemia (d) night blindness.

Last Answer : (b) sickle cell anaemia

Define Neuron or Nerve Cell.

Description : Define Neuron or Nerve Cell.

Last Answer : Neuron or nerve cell is the basic structure and functional unit of the nervous system. All parts of the nervous system are made up of neurons.

Neuron is the name given to which special type of biological cell? a) a nerve cell b) a brain cell c) a skin cell

Description : Neuron is the name given to which special type of biological cell? a) a nerve cell b) a brain cell c) a skin cell

Last Answer : ANSWER: A -- A NERVE CELL