Answer:
Most protists are unicellular. You may be wondering why those protists are not classified in the Archaebacteria or Eubacteria kingdoms. It is because, unlike bacteria, protists are complex cells.
Also:
Among these three main types of archaea are some subtypes, which include: Methanogens — archaeans that produce methane gas as a waste product of their "digestion," or process of making energy. Halophiles — those archaeans that live in salty environments.
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Answer:
The cell membrane of a living plant cell selectively regulates the passage of substances into and out of the cell (option A).
Explanation:
The plasma membrane in a living plant cell is composed of a double lipid layer that gives it hydrophobic character and acts as a semi-permeable barrier. The partial permeability of the substances allows regulating the passage of substances from and to the interior of the cell.
At the level of the plasma membrane there are several mechanisms and transport to allow the entry of substances needed for the cell or the output of synthesized products or metabolic waste, thus regulating the passage of substance in a selective way.
Regarding the other options:
<em> B. Plasma membranes are composed of lipids, not just carbohydrates and proteins.
</em>
<em> C. Permeability is not for all substances, but is selective.
</em>
<em> D. Plasma membrane is a lipid bilayer, not a double layer of proteins.</em>
Answer:
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Explanation:
Chimpanzees are genetically closest to humans, and in fact, chimpanzees share about 98.6% of our DNA. We share more of our DNA with chimpanzees than with monkeys or other groups, or even with other great apes! We also both play, have complex emotions and intelligence, and a very similar physical makeup.
Human and chimp DNA is so similar because the two species are so closely related. Humans, chimps and bonobos descended from a single ancestor species that lived six or seven million years ago. As humans and chimps gradually evolved from a common ancestor, their DNA, passed from generation to generation, changed too.
Answer:
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Explanation:
Effectors include muscles and glands - that produce a specific response to a detected stimulus. For example: a muscle contracting to move an arm. muscle squeezing saliva from the salivary gland.
