Flatworms have no need for circulatory and respiratory systems because they are able to actively diffuse oxygen through their skin and their body layout is such that they do not need to transport oxygen in order for it to get to their cells.
Answer:
True
Explanation:
Prokaryotic cell or bacterial cell contain cell wall which is made up of peptidoglycan and traditional antibacterial antibiotics were able to interfere with the cell wall synthesis and cause the destruction of bacterial cells.
For example, one of the most traditional antibiotic is penicillin which inhibit the synthesis of bacterial cell wall by blocking transpeptidation reaction. As it inhibits new cell wall formation it results in the formation of holes in the cell wall.
These holes in the cell allow movement molecules inside the cell and cause osmotic cell lysis. Therefore the statement is true.
Mitochondria and chloroplasts are similar to some prokaryotic cells because they contain their own amino acids which are not organised into sets of linear chromosomes or contained within a nucleus.
Answer:
B. Membrane-bound organelles
Explanation:
Prokaryotes don't have a nucleus compared to the eukaryotes which do and are considered as all living organisms
1. remaining skin cells still have the mutation that causes the cancer in their DNA, even if the symptoms are removed
2. it is likely to affect an entire chromosome because during meiosis there may be errors in crossing over when the condensed chromosomes can exchange large parts of the chromosomes in error
