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3 years ago

What is the function of an electromagnet in an electric doorbell?

Biology

2 answers:

Klio2033 [76]3 years ago

6 0

Answer:

The correct answer is option - its attracts a metal striker which then hits the bell.

Explanation:

The mechanism of the doorbell is very simple whenever someone presses the doorbell switch it completes the electric circuit that allows the electric current to flow through the electromagnet present in the doorbell.

The current that flows through the electromagnet is then attracts the striker of the bell that hits the bell and the bell makes the sound. Doorbells are the device that works on low voltage.

Thus, the correct answer is - it attracts a metal striker which then hits the bell.

VladimirAG [237]3 years ago

4 0

The correct answer is:

D. It attracts a metal striker, which then hits the bell.

The function of an electromagnet in an electric doorbell is it attracts a metal striker, which then hits the bell.

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How did the agreement that no state could stop a fugitive slave form being returned to his or her owner affect slaves?

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Explanation:

This is an example of relating structure to function.

Cells sharing a similar origin, group together in the body to form tissues; these typically share physical features and are arranged in regular patterns cells within the human body can generally be placed into four groups:

epithelial which refers to sheets of cells covering exterior surfaces and internal organs;
connective tissue which functions to bind cells and organs together while protecting, supporting and integrating different regions.
muscle tissue which responds to simulation, allowing for movement and locomotion;
nervous tissue which responds to electrical impulses, allowing for communication between different regions of the body

Connective tissue are usually spread out in a formation called a matrix. The matrix contains lots of extracellular components which are made by cells within connective tissue; it mainly consists of a fluid ground substance which interwoven with fibers of protein. Connective tissues mainly contain cells, the ground substance and protein fibers; each of these are present in varying amounts related to the structure and function of the tissue

It is further classified in to loose and dense tissue types which exists in multiple variations; in the loose tissue, fibers are aggregated loosely without a regular arrangement and often contains large spaces. Additionally connected tissue also contains cell types like fibroblasts. The loose tissue types, like adipose act as shock-absorbers and allow water, nutrients and salts to diffuse throughout the tissue to nearby tissue and cells.

Lipid droplets found in lipocytes, are organelles made up of a core of hydrophobic lipids. This is encased in a single layer of phospholipids which arrange themselves tightly and efficiently in a ball, with their hydrophilic heads facing outwards; while their hydrophobic tails face inwards. The phospholipid monolayer may also contain embedded proteins that at as special signals for recognition.

In lipocytes, one of these droplets may take up the intracellular space (white adipose) with the nucleus pushed to one side of the spherical cell- the cell takes the shape of the droplet, which allows storage maximization. They make up a type of loosely aggregated connective tissue, called adipose tissue,which function in cell signalling, as energy storage, and insulation.

Learn more about cellular life at brainly.com/question/11259903

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2 years ago

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julia-pushkina [17]

Answer:

Over the next two centuries after the discoveries of Hooke and Leeuwenhoek, biologists found cells everywhere. Biologists in the early part of the 19th century suggested that all living things were made of cells, but the role of cells as the primary building block of life was not discovered until 1839 when two German scientists, Theodor Schwann, a zoologist, and Matthias Jakob Schleiden, a botanist, suggested that cells were the basic unit of structure and function of all living things. Later, in 1858, the German doctor Rudolf Virchow observed that cells divide to produce more cells. He proposed that all cells arise only from other cells. The collective observations of all three scientists form the Cell Theory, which states that:

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Though no one point of the Cell Theory is more important than another, the theory clearly states that the functions necessary for life occur in the cell. Findings since the time of the original Cell Theory have enabled scientists to "modernize" the theory, including points related to biochemistry and molecular biology. The modern version of the Cell Theory includes:

all known living things are made up of one or more cells,

all living cells arise from pre-existing cells by division,

the cell is the fundamental unit of structure and function in all living organisms,

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all cells are basically the same in chemical composition in organisms of similar species.

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Explanation:

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