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Liula [17]
3 years ago
14

The ____________ functions as a gateway through which chemicals and small particles, such as ____________ enter or leave the cel

l. Substances may move through the membrane by ____________ (physical) processes, such as ____________ . Substances can also move through the membrane by ____________ (physiologicial) processes, such as ____________ .
Biology
1 answer:
Vilka [71]3 years ago
6 0

Answer: cell membrane

such as water, micro-organism

physical process

simple diffusion, osmosis and filtration

such as potasssium permaganate in water,urea a liver waste diffuses from the body and the kidney help in filtering it out

physiological processs

active transport, phagocytosis and pinocytosis

such as soduim-potassium pump, exocytosis

Explanation:  transportation in and out of cell is done in different ways listed above but a barrier to this movement is the cell membrane which is an outer covering of the cell. it protect the cell and only some materials can penetrate the cell membrane e.g micro-organism, water e.t.c. the various physical and physiological processes are the various ways substance  cna be liquid, solid or gas are transported within or outside the  cell e.g food

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Answer:

Both ferns and flowering plants produce spores at some point in their life cycles. True

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Explanation:

Yes, both ferns and flowering plants produce spores in their life cycles. In fern plant, it produce spores on the underside of the leaves whereas in flowering plant, there are two types of spores such as microspores and megaspores. Both ferns and flowering plants have gametophyte as part of their life cycle. Flowering plants produce pollen grains whereas non-flowering plants produce spores to continue their generation. Both tree and large fern plants having diploid sporophytes which is a necessary part of their life cycle.

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3 years ago
How do apple and pinaples grow
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apples grow on a tree, so do pineapples i think

Explanation:

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In a lab diagnosis, a pathologist observed a test sample from a tuberculosis patient under a high-power microscope. Which type o
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A protein isolated from a thermophilic bacterium shows a molecular weight of 160 kD when eluted from a size-exclusion chromatogr
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as a dimer consisting of two identical monomers (80 kDa subunits) that are packed together via hydrophobic interactions

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