In most hypotheses of early earth and the formation of life, it is accepted that the atmosphere was a reducing one. this means that there was an abundance of methane, ammonia, and water vapor, but there was an absence of significant amounts of oxygen gas. based on this assumption, what was likely the first metabolic activity to harness atp to evolve in primitive cells? a) photosynthesis, as plants evolved before animals b) cellular respiration, as this generates the most atp c) glycolysis, as this does not require organelles not oxygen d) calvin cycle, as glucose was required by all cells for metabolism

Florian discovers a rock that is broken into pieces. each piece has several bands. which type of rock does florian predict these pieces will change into when subjected to heat and pressure? igneous magma metamorphic sedimentary

Identify the examples in which sam interacts only with natural resources

To store strawberries in sugar syrup, lucy placed them in a jar and covered them with sugar but did not add any water. do you think syrup will be formed? justify. a. no. since water is not added, there cannot be any syrup formation. b. no. the higher concentration of sugar on the outside will cause the water from the sugar to diffuse in the strawberry cells causing them to swell without formation of any syrup. c. yes. the higher concentration of sugar on the outside will cause the water from the strawberry to diffuse out resulting in syrup formation. d. yes. the sugar will melt over time and form the syrup.