Receptors that provide animals with information from the external environment are located in the:
These receptors are known as sensory receptors as they perceive the changes that occur in the external environment and transmit the information to the nervous system.
The name of these receptors located in the respective organ is as follows :
1. Ear - auditory receptor
2. Skin - mechano (cutaneous) receptors
3. tongue - taste receptors
4. eyes - Photoreceptors
5. nose - olfactory receptors
An example of how it detects the changes in the external environment can be understood as follows :
The substances that have odor produce chemicals known as odorants which bind to the olfactory receptors located in the nose which then produces electric signals which are transmitted via the nerves to the olfactorybulb in the brain and the smell is detected.
Answer:
ears
skin
tongue
eyes
nose
Explanation:
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A. they have a small surface area to volume
ratio to allow sufficient transport of molecules into and out of the cell
B. they have a large surface area to volume
ratio to allow sufficient transport of molecules into and out of the cell
Answer: B
Explanation:
bees
lions
moose
zebras
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Answer:
The answer is bees.
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Answer:
The correct answer is A; Bees
Explanation:
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Eating snacks of potato chips from the bag in between meals least improve Jordan's overall fitness. Potato chips give zero nutrition and increases calorie intake that makes it hard to burn. Jordan should stop eating them.
Answer:
Ear More Meals At A Restaurant
Explanation:
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True
False
Answer:
True
Explanation:
it is a pigment used in the process of photosynthesis and also gives the plant it's green colour.
The sole reason why red blood cells are unable to replace damaged proteins is that red blood cells lack DNA and cell organelles such as nucleus, ribosomes and mitochondria which are crucial for protein synthesis, assembly and repair. In other words they lack both the information and the machinery for making or repair of proteins.
Due to lack of DNA and cell organelles, red blood cells cannot be able satisfy the central dogma which summarizes synthesis of proteins as DNA → RNA → proteins.
DNA has the genetic information on how proteins should be made, RNA is responsible for transferring the information from DNA in the cell nucleus to the ribosomes in the cytoplasm, then translating or decoding this information, which results in the making of protein.
Red blood cells (RBCs) are unable to replace damaged proteins because they lack a nucleus and organelles, including mitochondria. Instead, new RBCs are constantly produced in the bone marrow to replace damaged or aged ones. When RBCs are damaged or aged, macrophages phagocytize them.
Red blood cells (RBCs) are unable to replace damaged proteins because they lack a nucleus and organelles, including mitochondria. This means that RBCs cannot synthesize new proteins to replace damaged ones. Instead, RBCs have a limited lifespan and are constantly being replaced by new RBCs produced in the bone marrow. When RBCs are damaged or aged, they are phagocytized by macrophages in the spleen, liver, and bone marrow.
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b. hypothalamus
c. cerebrum
d. forebrain
Thalamus of central brain regulates emotions and thinking process of the body. It is involve emotional processing and arousal functions are functions of the thalamus. Thus, option A is correct
The are several components of human brain like cerebrum, cerebellum and brainstem.
A structure called diencephalon present between two hemispheres of cerebrum which has a structure like thalamus,hypothalamus, subthalamus, epithalamus.
Thalamus is a gray matter responsible for sensory and motor activities, alertness, consciousness or wakefulness in humans.
Hypothalamus is a small part of the brain regulates internal balance, send signals to the pituitary gland to produce hormones, regulates heart rate, blood pressure, body weight, appetite, body temperature and sleep cycle.
Certain hormones secreted by hypothalamus are oxytocin, Anti -diuretic hormone, Gonadotropin, Prolactin hormone etc.
Hence, option A is correct
Learn more about Thalamus, here:
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Answer:
a. the thamlalus
Explanation: