3. describe how the relative proportion of hydrogen, helium, and heavier elements will change as the sun ages. 4. how does energy release from the sun reach earth? how does the sun's energy interact with earth's atmosphere and hydrosphere? 5. every star starts with an initial mass of hydrogen. each atom of hydrogen has one proton and one neutron. how are the total number of protons and neutrons conserved as a star ages and undergoes continuous nucleosynthesis? 6. what mechanisms or events are needed for a star to make heavier elements than iron? 7. how do scientists use electromagnetic emissions of stars to determine their composition, age, and stage of development?

Sarah is sitting at the top of the slide in the schools playground. which will increase sarah’s kinetic energy a- an additional child is added to the top of the slide. b- sarah is pushed and moves down the slide. c- sarah climbs down the ladder and off the slide. d- the ladder is moved to the other side of the yard.

With the description of the different cell walls, membranes, and associated proteins set in the students' minds, you now need to introduce them to the idea that the cell wall can also act as a foundation to build things upon. bacterial appendages require a strong foundation that will offer the support needed to move and function in a dynamic world. for example, flagella are long, whiplike protein structures that are used by many gram-positive and gram-negative bacteria for locomotion. in order to function effectively, a flagellum must be firmly anchored to the cell wall. how will you be able to get across the idea that the peptidoglycan cell wall is strong enough to support such a mechanism? with a protein rod that passes through the cell wall and protein rings used to anchor it in the membranes, these basal bodies are the rudimentary biological motors that use atp power to spin the hook and the flagella attached to it. bacterial flagella have a biological motor that spins within the cell wall and is powered by atp. this allows the flagella to spin in a whiplike motion to propel the bacterium.

Describe how alleles and genes are related