Amoeba because it is a heterotroph and it has a cell membrane, nucleus, contractile vacuole, cytoplasm, food vacuole, and psudopods
Salutations!
<span>Which characteristic is common to all prokaryotes and eukaryotes?
The ability to respond to external stimuli is the characteristic that is common to all prokaryotes an eukaryotic cells. Stimulus help detects change in the cell, as we are speaking of cells. The cells responding to the stimulus is called sensitivity.
Thus, your answer is option B.
Hope I helped (:
Have a great day!</span>
Answer:
transcription initiation
Explanation:
Transcription is a process by which genetic information from DNA is used to synthesize an RNA molecule, usually, a messenger RNA (mRNA), which is subsequently utilized to synthesize a protein by a process called translation. Transcription in prokaryotes has three steps:
1-Initiation: the RNA polymerase is a multisubunit enzyme (holoenzyme) composed of two α, one β, one β’ and one ω and σ subunits (α2ββ’ωσ). This holoenzyme binds to the promoter region of the template DNA strand.
2-Elongation. The sigma σ factor of the holoenzyme is released and the complex and the core enzyme (α2 ββω) moves along the template strand, thereby producing an mRNA sequence
3-Termination. This step can be Rho-dependent, where a protein named "Rho" recognizes the termination site and stop transcription, and Rho-independent (transcription continues until the termination sequence is reached).
In consequence, Rifamycin is likely to block the initiation of transcription because the core RNA enzyme needs to bind the sigma factor (σ) for initiation of transcription in bacteria.
Answer:
D
Explanation:
because mintochodria is the power house hence it provides energy to the cell
