A single-celled organism floats freely and lives independently. Its single cell is able to carry out all the processes of life without any help from other cells.
• A biofilm is a thin layer of bacteria that sticks to a surface. Cells in a biofilm are all alike, but they may play different roles, such as taking in nutrients or making the "glue" that sticks the biofilm to the surface. The sticky plaque that forms on teeth is a biofilm of bacterial cells.
• Some single-celled organisms, such as algae, live in colonies. A colony is an organized structure composed of many cells, like the Volvox sphere in Figure 3.21. Volvox are algae that live in colonies of hundreds of cells. All of the cells in the colony live and work cooperatively. For example, they can coordinate the movement of their flagella, allowing them to swim together through the water as though they were part of a single organism.
A multicellular organism consists of many cells and has different types of cells that are specialized for various functions. All the cells work together and depend on each other to carry out the life processes of the organism. Individual cells are unable to survive on their own.
i got this off of quizlet so i hope this helps you. Also this isnt plagarizim bc i gave you where i got it from.
1. genetic consistency. that is ecause all cells formed by mitosis are genetically identical thus they contain the same dna and in each tissue the new cells perform the function that they are responsible for.
2. growth
3.repear
The chemical process that generates most of the energy in the cell<span>, supplying molecules needed to make the metabolic reactions (see metabolism) of an organism run. Note: The main carrier of energy in metabolism is the molecule ATP.</span>
The skeletal muscle is one of the three types of muscle in the organism. <em>Option a) is correct. From smallest to largest, the parts of a </em><em>skeletal muscle </em><em>are Myofilament, sarcomere, myofibril, muscle fiber, fascicle, muscle. </em>
<h3>
The skeletal muscle</h3>
- It is the most abundant muscle in vertebrates, constituting the somatic musculature.
- Among its many functions, it proportionates motion to extremities and digits and is responsible for the position and posture of the individual. It also participates in<em> eye movements, respiration, mastication, deglutition, and phonation</em>.
- The skeletal muscle contracts voluntarily, and its response is fast.
- Cells composing the striated muscle are significantly longer and multinucleated. They arrange in bundles, where cells are parallel to each other.
<h3>Composition of skeletal muscle</h3>
- <em>Myofilaments </em>⇒ Actine and miosine
- <em>Sarcomere</em> ⇒ It is the functional unit with the contractile apparatus. Composed of the Z band, A and I bands, and H zone.
- <em>Myofibrilles</em> ⇒ They have the Functional units
- <em>Muscle fibers</em> ⇒ Surrounded by endomysium
- <em>Fascicle </em>⇒ Group of fibers surrounded by perimysium.
- <em>Muscle</em> ⇒ Group of fascicles surrounded by epimysium.
Hence, the correct option is a).<em> From smallest to largest, the parts of a </em><em>skeletal muscle </em><em>are Myofilament, sarcomere, myofibril, muscle fiber, fascicle, muscle.</em>
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<em> You can learn more about the</em><em> skeletal muscle</em><em> at</em>
<em>brainly.com/question/1560716</em>
<em>brainly.com/question/1194286</em>
