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D) All of the choices are correct
Bacteria: Bacteria: Cell walls with peptidoglycan, includes autotrophs and heterotrophs, Prokaryotic cells
Archaea: Includes methanogens and halophiles, Prokaryotic cells, includes autotrophs and heterotrophs.
Eukarya: Includes plants, animals and fungi, eukaryotic cells, includes autotrophs and hetrotrophs.
Explanation:
Bacteria are the unicellular prokaryotes with a distinct feature of cell wall made up of peptidoglycan.
Archaea: They are unicellular and lack a defined nuclei and lives in extreme climate.
Eukarya: multicellular, Eukaryotic, well-defined nucleus, membrane-bound organelle, no cell wall.
The link where the action
potential of the nerve that meets muscle and causes it to contraction is where excitation-contraction coupling occurs. The T_tubules the
invaginate into the sarcolemma of the muscle cells are the ones that carry the excitation into the muscles. Its depolarization
causes the lateral sacs of the sarcoplasmic reticulum to release ca2+
ions. The ca2+ then bind into their site on troponin and causes the tropomyosin to shift and allow actin to expose
the binding site in which myosin head
will bind and form a cross bridge that is
important in the contraction of the muscle.
Sound cannot travel through a vacuum. A vacuum is an area without any air, like space. So sound cannot travel through space because there is no matter for the vibrations to work in.
The correct answer is (B) chemosynthesis and marine snow are the two ways that organisms on the bottom of deep sea food chains acquire energy.
What is the meaning of chemosynthesis and marine show?
Chemosynthesis is the utilization of energy supplied by inorganic chemical processes to make food in bacteria and other organisms. To generate a sugar, all chemosynthetic organisms require energy provided by chemical processes, although various species employ different methods.
Marine snow is a shower of biological particles that falls from the upper ocean to the deep sea. Marine snow refers to biological material that descends from higher in the water column. Some flakes fall for several weeks before reaching the ocean floor.
Learn more about chemosynthesis and marine snow refer:
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