Which of the following processes likely depends on the activity of a proton pump? Pick the best answer!
(a) Sugar uptake
(b) Osmosis
(c) Uptake of nitrate
(d) One of the above
(e) Two of the above
Ans: (e) Two of the above
You might also like to view...
Groups of cells derived from a single parent cell by successive cell divisions are known as microbial ________ and which live in environments known as microbial ________
A) communities / habitats B) communities / ecosystems C) populations / habitats D) populations / ecosystems
he route that most accurately describes secretory protein movement through the endomembrane system would be
A. Golgi apparatus?smooth endoplasmic reticulum ?lysosome?vesicles?plasma membrane B. plasmid?plasma membrane?nuclear envelope?smooth endoplasmic reticulum?vesicles C. nuclear envelope?vesicles?Golgi apparatus?rough endoplasmic reticulum?plasma membrane D. lysosomes?rough endoplasmic reticulum?smooth endoplasmic reticulum?vesicles?plasma membrane E. rough endoplasmic reticulum?vesicles? Golgi apparatus?vesicles ?plasma membrane
In a frog in which the diploid number of chromosomes per cell is 24, what is the total number of
chromatids present per cell in Prophase II after the first division and cytokinesis?
a. 0 b. 6 c. 12 d. 24 e. 48
The darker extremities characteristic of Siamese cats and Himalayan rabbits are due to a ________
a. mutation increasing the activity of an enzyme required for melanin production b. heat-sensitive form of an enzyme required for melanin production c. mutation inactivating the enzyme required for melanin production d. mutation making melanin production insensitive to temperature variations