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Answer is a. he projections are trichocysts, released for the self-defense of the <em>Paramecium</em>.
When <em>Paramecium</em> is stimulated by chemicals such as picric acid or an injurious enemy, it responds by throwing out transparent spine-like projections called trichocysts. The discharge of trichocysts forms an effective barrier round the animal and protects it from acid or enemy.
Mutalism, commensalism, and parasitism
Ocean floor is much more denser than the continental crust that's why the oceanic crust subduct rather than the continental crust
The central nervous system (CNS) and effector organs receive messages from receptors through the nerve cells, respectively.
<h3>What do neuron and muscle cells have in common?</h3>
- Tissues are made up of both nerve and muscle cells. Both mitochondria and endoplasmic reticulum are found in muscle and nerve cells. The body's operations are coordinated through the cooperation of muscle and nerve cells.
- Neurons, a type of nerve cell, and muscle cells are significantly distinct from one another. While nerve cells transmit signals from receptor cells to either glandular cells or muscle cells, or both, in order to move the body, muscle cells (myocytes) contract to cause movement.
- The synapse is the point at which a nerve cell can communicate with another cell or muscle cell. The space between the pre-and postsynaptic cell membranes is known as the synaptic cleft.
The function of muscle cells:
The same genetic material can be used to correctly fill in the first blank, and to contract can be used to correctly fill in the second blank.
The genetic material is present in all of the body's cells, including blood, muscle, neuron, and cardiac cells. Cell differentiation causes them to specialize into different types of cells.
Muscle cells' purpose is to contract, which aids in movement and mobility. Skeletal muscles aid in movement and smooth muscles support the operation of interior organs like the uterus, whose contractions aid in childbirth.
The central nervous system (CNS) and effector organs receive messages from receptors through the nerve cells, respectively.
To learn more about Neurons and muscle cells, refer to:
brainly.com/question/12723852
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