What is this called This structures is a group of cells that make hormones?

What is this called This structures is a group of cells that make hormones?
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chemical signals of the endocrine system, the group of glands that, along with the nervous system, controls the body's responses to internal and external stimuli. Hormones are carried to their target cells in the bloodstream.
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Which of the following structures or regions is incorrectly paired with its functions? (a) Medulla : Controls respiration oblongata and cardiovascular reflexes (b) Limbic : Consists of fibre tracts system that interconnect different regions of brain controls movement (c) Hypothalamus : Production of releasing hormones and regulation of temperature, hunger and thirst (d) Corpus callosum : Band of fibers connecting left and right cerebral hemispheres

Description : Which of the following structures or regions is incorrectly paired with its functions? (a) Medulla : Controls respiration oblongata and cardiovascular reflexes (b) Limbic : Consists of fibre tracts ... thirst (d) Corpus callosum : Band of fibers connecting left and right cerebral hemispheres

Last Answer : (b) Limbic : Consists of fibre tracts system that interconnect different regions of brain controls movement

Which of the following structures or regions is incorrectly paired with its function ? (1) Medulla oblongata : controls respiration and cardiovascular reflexes. (2) Limbic system : consists of fibre tracts that interconnect different regions of brain; controls movement. (3) Hypothalamus : production of releasing hormones and regulation of temperature, hunger and thirst. (4) Corpus callosum : band of fibers connecting left and right cerebral hemispheres.

Description : Which of the following structures or regions is incorrectly paired with its function ? (1) Medulla oblongata : controls respiration and cardiovascular reflexes. (2) Limbic system : consists of fibre ... and thirst. (4) Corpus callosum : band of fibers connecting left and right cerebral hemispheres.

Last Answer : (2) Limbic system : consists of fibre tracts that interconnect different regions of brain; controls movement.

Group of neurosecretory cells which produces hormones and are located in hypothalamus are known as

Description : Group of neurosecretory cells which produces hormones and are located in hypothalamus are known as

Last Answer : Group of neurosecretory cells which produces hormones and are located in hypothalamus are known as

The balloon-shaped structures called tyloses (a) originate in the lumen of vessels (b) characterise the sapwood (c) are extensions of xylem parenchyma cells into vessels (d) are linked to the ascent of sap through xylem vessels.

Description : The balloon-shaped structures called tyloses (a) originate in the lumen of vessels (b) characterise the sapwood (c) are extensions of xylem parenchyma cells into vessels (d) are linked to the ascent of sap through xylem vessels.

Last Answer : (c) are extensions of xylem parenchyma cells into vessels

How are hormones produced by endocrine glands typically transported to target cells?

Description : How are hormones produced by endocrine glands typically transported to target cells?

Last Answer : What is the answer ?

Which one of the following statements is fully correct? (A) Hormones are needed in the diet (B) Hormones can be elaborated only by endocrine glands (C) All the hormones enter the cells and perform their function (D) Hormones are substance synthesized in the body in small quantities and control and regulate metabolic events

Description : Which one of the following statements is fully correct? (A) Hormones are needed in the diet (B) Hormones can be elaborated only by endocrine glands (C) All the hormones enter the ... (D) Hormones are substance synthesized in the body in small quantities and control and regulate metabolic events

Last Answer : Answer : D

Receptors for thyroid hormones are present (A) On the cell membrane (B) Across the cell membrane (C) Inside the cells (D) In association with G-proteins

Description : Receptors for thyroid hormones are present (A) On the cell membrane (B) Across the cell membrane (C) Inside the cells (D) In association with G-proteins

Last Answer : Answer : C

All the following statements about hormones are true except (A) All of them require specific carriers in plasma (B) All of them require specific receptors in target cells (C) Some of them are subject to feedback regulation (D) Some of them increase the transcription of certain genes

Description : All the following statements about hormones are true except (A) All of them require specific carriers in plasma (B) All of them require specific receptors in target cells (C) Some of them are subject to feedback regulation (D) Some of them increase the transcription of certain genes

Last Answer : Answer : A

Catecholamine hormones are synthesized in the (A) Chromaffin cells of adrenal medulla (B) Zona glomerulosa of adrenal cortex (C) Zona fasciculate of adrenal cortex (D) Zona reticularis of adrenal cortex

Description : Catecholamine hormones are synthesized in the (A) Chromaffin cells of adrenal medulla (B) Zona glomerulosa of adrenal cortex (C) Zona fasciculate of adrenal cortex (D) Zona reticularis of adrenal cortex

Last Answer : Answer : A

Second messengers a. are substances that interact with first messengers inside cells b. are substances that bind to first messengers in the cell membrane c. are hormones secreted by cells in response to stimulation by another hormone d. mediate the intracellular responses to many different hormonesand neurotransmitters e. are not formed in the brain

Description : Second messengers a. are substances that interact with first messengers inside cells b. are substances that bind to first messengers in the cell membrane c. are hormones secreted by cells ... the intracellular responses to many different hormonesand neurotransmitters e. are not formed in the brain

Last Answer : mediate the intracellular responses to many different hormonesand neurotransmitters

The gonadotrophic hormones are secreted by (a) anterior lobe of pituitary (b) interstitial cells of testes (c) adrenal cortex (d) posterior part of thyroid.

Description : The gonadotrophic hormones are secreted by (a) anterior lobe of pituitary (b) interstitial cells of testes (c) adrenal cortex (d) posterior part of thyroid.

Last Answer : (a) anterior lobe of pituitary

Pancreatic juice and hormones of pancreas are produced by (a) same cells (b) same cells at different times (c) statment is wrong (d) different cells.

Description : Pancreatic juice and hormones of pancreas are produced by (a) same cells (b) same cells at different times (c) statment is wrong (d) different cells.

Last Answer : (d) different cells.

Which of the following hormones is NOT correctly matched with its description? A) thymosin--aids in production of T cells B) thyroxin--needed for growth and development in vertebrates C) parathyroid hormone--increases level of calcium ions in blood D) cortisol--lowers blood glucose level by removing glucose into tissues E) epinephrine--released by the adrenal medulla under stressful conditions

Description : Which of the following hormones is NOT correctly matched with its description? A) thymosin--aids in production of T cells B) thyroxin--needed for growth and development in vertebrates ... by removing glucose into tissues E) epinephrine--released by the adrenal medulla under stressful conditions

Last Answer : D) cortisol--lowers blood glucose level by removing glucose into tissues E) epinephrine--released by the adrenal medulla under stressful conditions

Which of the following is NOT correct about hormones? A) Hormones are generally found across the animal kingdom. B) Hormones may be used at a distance from where the hormone is made. C) Hormones have a slower effect than that mediated by the nervous system. D) Hormones bind to receptor sites at a target cell. E) Hormones are directed to the target organ and avoid contact with non-target cells.

Description : Which of the following is NOT correct about hormones? A) Hormones are generally found across the animal kingdom. B) Hormones may be used at a distance from where the hormone is made. C) ... target cell. E) Hormones are directed to the target organ and avoid contact with non-target cells.

Last Answer : E) Hormones are directed to the target organ and avoid contact with non-target cells.

Which of the following is NOT true about hormones? A) Hormones are secreted into the bloodstream. B) Hormones are released from exocrine glands. C) Hormones may be classified as peptides or steroids. D) Hormones usually affect a target organ. E) Cells that react to a hormone have specific receptors for that hormone.

Description : Which of the following is NOT true about hormones? A) Hormones are secreted into the bloodstream. B) Hormones are released from exocrine glands. C) Hormones may be classified as peptides or steroids. ... a target organ. E) Cells that react to a hormone have specific receptors for that hormone.

Last Answer : B) Hormones are released from exocrine glands.

A pheromone is A) an endorphin released within the anterior pituitary. B) a growth factor related to the production of tumors. C) a product of a neurosecretory cell that acts on neighboring cells. D) a chemical released by one animal to affect the behavior of another animal. E) a regulatory hormone that stimulates or inhibits the release of hormones produced by other endocrine glands.

Description : A pheromone is A) an endorphin released within the anterior pituitary. B) a growth factor related to the production of tumors. C) a product of a neurosecretory cell that acts on ... ) a regulatory hormone that stimulates or inhibits the release of hormones produced by other endocrine glands.

Last Answer : D) a chemical released by one animal to affect the behavior of another animal.

In pancrease, pancreatic juice and hormones are secreted by (a) Same cells (b) Different cells (c) Same cells at different times (d) None of these

Description : In pancrease, pancreatic juice and hormones are secreted by (a) Same cells (b) Different cells (c) Same cells at different times (d) None of these

Last Answer : (b) Different cells

The red blood cells are produced by the (1) Liver (2) Hormones (3) Bone-marrow (4) Heart

Description : The red blood cells are produced by the (1) Liver (2) Hormones (3) Bone-marrow (4) Heart

Last Answer : Bone-marrow

Hormones (A) Act as coenzyme (B) Act as enzyme (C) Influence synthesis of enzymes (D) Belong to B-complex group

Description : Hormones (A) Act as coenzyme (B) Act as enzyme (C) Influence synthesis of enzymes (D) Belong to B-complex group

Last Answer : Answer : C

Name the green dot like structures in some cells observed by a student when a leaf peel was viewed under a microscope. What is this green colour due to? -Biology

Description : Name the green dot like structures in some cells observed by a student when a leaf peel was viewed under a microscope. What is this green colour due to? -Biology

Last Answer : The green dot-like structures in some cells observed by a student when a leaf peel is viewed under a microscope are chloroplasts. The green colour is due to the presence of green pigment, chlorophyll.

Which structures of the cytoskeleton are found in animal cells and not plant cells? -Biology

Description : Which structures of the cytoskeleton are found in animal cells and not plant cells? -Biology

Last Answer : Animal cells have centrioles, centrosomes (discussed under the cytoskeleton), and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts, plasmodesmata, and plastids used for storage, and a large central vacuole, whereas animal cells do not.

Which structures of the cytoskeleton are found in animal cells and not plant cells? -Biology

Description : Which structures of the cytoskeleton are found in animal cells and not plant cells? -Biology

Last Answer : Animal cells have centrioles, centrosomes (discussed under the cytoskeleton), and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts, plasmodesmata, and plastids used for storage, and a large central vacuole, whereas animal cells do not.

Arrange in correct sequence the structures formed during spermatogenesis a) spermatogonia b) Secondary spermatocyte c) Spermatogonial stem cells c) sp

Description : Arrange in correct sequence the structures formed during spermatogenesis a) spermatogonia b) Secondary spermatocyte c) Spermatogonial stem cells c) sp

Last Answer : Arrange in correct sequence the structures formed during spermatogenesis a) spermatogonia b) Secondary spermatocyte c) ... -d-e D. c-d-a-b-c

Which one of the following structures between two adjacent cells is an effective transport pathway ?

Description : Which one of the following structures between two adjacent cells is an effective transport pathway ?

Last Answer : Which one of the following structures between two adjacent cells is an effective ... Plasmodesmata C. Plastoquinones D. Endoplasmic reticulum

Flame cells (solenocytes) are excretory structures of

Description : Flame cells (solenocytes) are excretory structures of

Last Answer : Flame cells (solenocytes) are excretory structures of A. Annelida B. Arthropoda C. Flat worms D. Crustaceans (prawn)

What consists of proteins joined together to create fiber like structures inside cells?

Description : What consists of proteins joined together to create fiber like structures inside cells?

Last Answer : Need answer

What is the threadlike structures in the nucleus of cells that contain genes?

Description : What is the threadlike structures in the nucleus of cells that contain genes?

Last Answer : Feel Free to Answer

What cell structures are seen only in cells that absorb sunlight and carry out photosynthesis?

Description : What cell structures are seen only in cells that absorb sunlight and carry out photosynthesis?

Last Answer : What is the answer ?

What structures would you expect to find in both plant and animal cells?

Description : What structures would you expect to find in both plant and animal cells?

Last Answer : What is the answer ?

What are the main cytoplasmic structures present in animal cells ?

Description : What are the main cytoplasmic structures present in animal cells ?

Last Answer : The main cytoplasmic structures of the cell are the centrioles, the cytoskeleton, lysosomes, mitochondria, peroxisomes, the Golgi apparatus, the endoplasmic reticula and ribosomes. Cell Structure Review - Image Diversity: cell organelles

Which of the following structures present in mammalian skin directly helps in keeping the body warm? (1) Pigmented cells (2) Sweat glands (3) Lymph vessels (4) Blood capillaries

Description : Which of the following structures present in mammalian skin directly helps in keeping the body warm? (1) Pigmented cells (2) Sweat glands (3) Lymph vessels (4) Blood capillaries

Last Answer : (2) Sweat glands Explanation: In the skin, two types of glands are present.

Which of the following structures present in mammalian skin directly helps in keeping the body warm? (1) Pigmented cells (2) Sweat glands (3) Lymph vessels (4) Blood capillaries

Description : Which of the following structures present in mammalian skin directly helps in keeping the body warm? (1) Pigmented cells (2) Sweat glands (3) Lymph vessels (4) Blood capillaries

Last Answer : (3) Lymph vessels Explanation: The lymphatic system consists of a network of specialized lymphatic vessels and various tissues and organs throughout the body that contain lymphocytes (White Blood Cells) and ... skin and in the deeper fatty tissues near the muscles and can be found near arteries.

Neoplasms are best characterized as: C A. Malignant tumors B. A proliferation of cells that is characterized by its ability to invade contiguous structures C. A cellular proliferation in which growth is for the most part autonomous D. None of these

Description : Neoplasms are best characterized as: C A. Malignant tumors B. A proliferation of cells that is characterized by its ability to invade contiguous structures C. A cellular proliferation in which growth is for the most part autonomous D. None of these

Last Answer : A cellular proliferation in which growth is for the most part autonomous

Which of the following pair have haploid structures? (a) Nucellus and antipodal cells (b) Antipodal cells and egg cell (c) Antipodal cells and megaspore mother cell (d) Nucellus and primary endosperm nucleus

Description : Which of the following pair have haploid structures? (a) Nucellus and antipodal cells (b) Antipodal cells and egg cell (c) Antipodal cells and megaspore mother cell (d) Nucellus and primary endosperm nucleus

Last Answer : (b) Antipodal cells and egg cell

Which one of the following pairs of plant structures has haploid number of chromosomes? (a) Nucellus and antipodal cells (b) Egg nucleus and secondary nucleus (c) Megaspore mother cell and antipodal cells (d) Egg cell and antipodal cells

Description : Which one of the following pairs of plant structures has haploid number of chromosomes? (a) Nucellus and antipodal cells (b) Egg nucleus and secondary nucleus (c) Megaspore mother cell and antipodal cells (d) Egg cell and antipodal cells

Last Answer : d) Egg cell and antipodal cells

Plasmodesmata are (a) locomotory structures (b) membranes connecting the nucleus with plasmalemma (c) connections between adjacent cells (d) lignified cemented layers between cells.

Description : Plasmodesmata are (a) locomotory structures (b) membranes connecting the nucleus with plasmalemma (c) connections between adjacent cells (d) lignified cemented layers between cells.

Last Answer : (c) connections between adjacent cells

Which one of the following structures between two adjacent cells is an effective transport pathway? (a) Plasmodesmata (b) Plastoquinones (c) Endoplasmic reticulum (d) Plasmalemma

Description : Which one of the following structures between two adjacent cells is an effective transport pathway? (a) Plasmodesmata (b) Plastoquinones (c) Endoplasmic reticulum (d) Plasmalemma

Last Answer : (a) Plasmodesmata

Which is correct about cell theory in view of current status of our knowledge about cell structure? (a) It needs modification due to discovery of subcellular structures like chloroplasts and mitochondria. (b) Modified cell theory means that all living being are composed of cells capable of reproducing. (c) Cell theory does not hold good because all living beings (e.g., viruses) do not have cellular organisation. (d) Cell theory means that all living objects consists of cells whether or not capable of reproducing

Description : Which is correct about cell theory in view of current status of our knowledge about cell structure? (a) It needs modification due to discovery of subcellular structures like chloroplasts and ... Cell theory means that all living objects consists of cells whether or not capable of reproducing

Last Answer : (c) Cell theory does not hold good because all living beings (e.g., viruses) do not have cellular organisation.

You are given a fairly old piece of dicot stem and a dicot root. Which of the following anatomical structures will you use to distinguish between the two? (a) Secondary xylem (b) Secondary phloem (c) Protoxylem (d) Cortical cells

Description : You are given a fairly old piece of dicot stem and a dicot root. Which of the following anatomical structures will you use to distinguish between the two? (a) Secondary xylem (b) Secondary phloem (c) Protoxylem (d) Cortical cells

Last Answer : (c) Protoxylem

The excretory structures of flatworms/ Taenia are (a) flame cells (b) protonephridia (c) Malpighian tubules (d) green glands

Description : The excretory structures of flatworms/ Taenia are (a) flame cells (b) protonephridia (c) Malpighian tubules (d) green glands

Last Answer : (a) flame cells

The _____ microscope would be used to view cell structures within ultrathin sections of cells. a. scanning electron b. transmission electron c. bright-field d. dark-field

Description : The _____ microscope would be used to view cell structures within ultrathin sections of cells. a. scanning electron b. transmission electron c. bright-field d. dark-field

Last Answer : b. transmission electron

Methotrexate has the following attributes except: A. It is cell cycle specific and kills cells in the S phase B. Its toxicity primarily affects bone marrow and epithelial structures C. Folic acid reverses its toxic effects D. It is the drug of choice for choriocarcinoma

Description : Methotrexate has the following attributes except: A. It is cell cycle specific and kills cells in the S phase B. Its toxicity primarily affects bone marrow and epithelial structures C. Folic acid reverses its toxic effects D. It is the drug of choice for choriocarcinoma

Last Answer : C. Folic acid reverses its toxic effects

Which of the following organelles or structures is found in both plant and animal cells? (A) Central vacuole (B) Tonoplast (C) Cell wall (D) Peroxisomes

Description : Which of the following organelles or structures is found in both plant and animal cells? (A) Central vacuole (B) Tonoplast (C) Cell wall (D) Peroxisomes

Last Answer : (D) Peroxisomes

Which of the following structures present in mammalian skin directly helps in keeping the body warm ? (1) Pigmented cells (2) Sweat glands (3) Lymph vessels (4) Blood capillaries

Description : Which of the following structures present in mammalian skin directly helps in keeping the body warm ? (1) Pigmented cells (2) Sweat glands (3) Lymph vessels (4) Blood capillaries

Last Answer : Lymph vessels

What are the three structures shared by every chordate that characterize the group?

Description : What are the three structures shared by every chordate that characterize the group?

Last Answer : All beings of the phylum Chordata have branchial clefts in the pharynx (in some species present only in the embryo), notochord (substituted by the spinal column in vertebrates) and dorsal neural tube. Image Diversity: branchial clefts notochord dorsal neural tube

Which statement about the carbonyl group is NOT true? (a) The carbonyl carbon is sp2 hybridized. (b) The bond angles among the three atoms attached to the carbonyl carbon are 120°. (c) The three atoms attached to the carbonyl carbon form a nonplanar geometry. (d) The carbonyl group forms resonance structures.

Description : Which statement about the carbonyl group is NOT true? (a) The carbonyl carbon is sp2 hybridized. (b) The bond angles among the three atoms attached to the carbonyl carbon are 120°. (c) ... attached to the carbonyl carbon form a nonplanar geometry. (d) The carbonyl group forms resonance structures.

Last Answer : The three atoms attached to the carbonyl carbon form a nonplanar geometry