Cyanobacteria produce a cell type known as a (cyst/heterocyst/nodule) that protects nitrogenase from the exposure to oxygen.
Fill in the blank(s) with the appropriate word(s).
heterocyst
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The large, double-stranded, helical molecule that contains instructions for assembling a living organism from simpler
molecules is ____.
a. RNA b. DNA c. ATP d. Protein e. NADPH
Which of the following is true of the cells of a
Choanoflagellate colony?
a. each cell is genetically unique b. each cell is genetically identical c. each cell has a different chromosome number d. each cell performs the same function as the other cells e. each cell has the ability to switch their sex from male to female and back again
Which bird trait is an adaptation that is probably less well developed in flightless birds such as penguins and ostriches?
A) honeycombed bone structure B) amniotic egg C) vertebrae D) presence of feathers
Which of the following is the major mechanism of heat loss during exercise?
What will be an ideal response?