I believe the blank is "mass."
Understand what I see nothing
Answer:
Endospores.
Explanation:
Microorganisms usually adapt to changes in their environment. One example of an extreme survival strategy employed by certain low G+C Gram-positive bacteria, generally of the Firmicute family, is the formation of endospores. They have a very peculiar structure that helps with this survival feature: an outer proteinaceous coat surrounding the spore provides much of the chemical and enzymatic resistance. Beneath the coat there is a very thick layer of specialized peptidoglycan called the cortex, which aids in resistance to high temperature. They are resistant to desiccation, lysozyme, ultraviolet and gamma radiation, chemical disinfectants, starvation AND temperature. So, in this experiment, it is probable that the boiled broth contained endospores, which survived this heating and then reactivated its metabolism.
Eukaryotic alga are the organism in which photosynthesis occurs in the chloroplast and cellular respiration takes place in the mitochondria. Thus, to monitor both photosynthesis and cellular respiration, EUKARYOTIC ALGA should be used.
Eukaryotic algal cells are good idea to study photosynthesis and cellular respiration because these cells have both cell organelles chloroplast and mitochondria. Algal cells grow faster and require less space for their growth. These require sunlight for photosynthesis and temperature plays an important role in the growth of these cells.
C. Mutagens causes mutations.