Which sequence best represents the levels of organization in a paramecium, a single-celled organism?
a. cells —› tissues —› organs —› organ systems —› organism
b. organelles —› organ systems —› organism
c. cells —› organs —› organ systems —› organism
d. organelles —› organism

organelles —› organism

Explanation:

The paramecium is a single-celled organism with several complex organelles like nucleus, cilia, food vacuole, etc.

Each organelle is specialized for specific metabolic function. This enables paramecium to be able to function as a whole unit with the ability to carryout vital processes that sustain life.

Hence, the sequence that best represents the level of organization in paramecium is organelles —› organism

what is the aerea shown

explanation:

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.