You decide to test peptides 1 and 2 using an in vivo model (in mice). for this experiment, you prepare tissue grafts loaded with a starting culture of wild-type s. aureus and surgically implant them into mice. in the control treatment, you don't add either peptide to the graft. you run six different experimental treatments in which you add each peptide alone to the graft, or you add both peptides to the graft. you also test a single dose of peptide versus three doses spread out over the experiment. after seven days, you remove the grafts and measure the amount of toxin present. your results are shown below.

answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.

the atomic number of magnesium is 12. its nucleus must contain 12 protons and no electrons. the atomic number of an atom is determined by the number of protons.

magnesium is an electrolyte injection commonly used to treat low magnesium levels in your blood. it is also used to prevent or control seizures in women with preeclampsia or eclampsia.