II. Completați frazele următoare utilizând termenii științifici corecți:
a) Celula cu nucleu individualizat și organite celulare se numește ………… .
b) ADN-ul și ARN-ul se numesc ………… .
c) ………… ………… sunt structuri care funcționează ca niște organe miniaturale, fiind răspunzătoare de îndeplinirea unor anumite funcții.
d) Nucleoidul este ………… al procariotelor.
e) Toate celulele prezintă ………… în timp ce peretele celular e prezent la celulele ………… .

Which statement describes a way in which the digestive and excretory systems work together? a. the nephrons absorb nutrients from food going to the large intestine. b. the excretory system balances blood gases in the small intestine. c. the intestinal villi filter blood and send wastes to the bladder. d. the excretory system balances the salts and water obtained from digested food

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.

In the ocean why are the greatest amount of primary producers found in the epipelagic zone and how does that affect biodiversity