Answer:
He named the "cell", the "cell" because they reminded him of the bare wall rooms where monks lived. These rooms were called cells.
Explanation:
Answer:
Human actions affect ecosystems through exotic species introduction, disease transfer, land conversion, habitat loss, modification and fragmentation, resource exploitation etc. All of these actions reflect negatively on any given ecosystem.
Explanation:
Abiotic factors are water, air, soil, sunlight, and minerals. Biotic factors are living or once-living organisms in the ecosystem. All of which human actions affect.
Answer:
nothing
Explanation:
Answer:
Explanation:
The immune system responds to antigens by producing cells that directly attack the pathogen, or by producing special proteins called antibodies. Antibodies attach to an antigen and attract cells that will engulf and destroy the pathogen. The main cells of the immune system are lymphocytes known as B cells and T cells.
B. Prokaryotic
C. Nucleus
Prokaryotic cell don't have any membrane bound organelles but they do have a nucleus. Thus, the correct option is B.
Prokaryotic cells are defined as the cell which single-celled, non bound organelle microorganisms known to be the earliest on earth. Prokaryotes comprises bacteria and archaea.
The photosynthetic prokaryotes comprises cyanobacteria that perform photosynthesis. A prokaryotic cell comprises of a single membrane and hence, all the reactions occur within the cytoplasm. The below diagram shows a prokaryotic cell.
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Answer:
Dna
Explanation:
The nucleus is surrounded by a membrane. Prokaryotic cells do not have a nucleus