Adna replication bubble forms at a specific sequence of bases called the see section 15.3 ( page 321) . a dna replication bubble forms at a specific sequence of bases called the see section 15.3 ( page 321) . topoisomerase origin of replication dna polymerase leading strand lagging strand

Which type of organism is missing from the food web seen in the illustration? primary consumers decomposers primary producers secondary consumers

Which statement is true about the cell theory? a) it is well-supported by evidence. b) it is unchangeable and permanent.

Sally and sue were investigating the topic of friction in science. they used a small car and a ramp as seen in the picture to test what they were learning. they knew that they slipped easily on waxed floors but not on carpet, so they decided to change the material on the surface of the ramp to see what happened. they planned to use glass, carpet, aluminum foil, and sandpaper and run the car down the ramp over each surface. what would be the best research question to guide the girls' experiment? a) does the amount of surface area affect the friction on the moving car? b) will the car travel fastest on the glass surface? c) how does the angle of the ramp affect the speed of the car? d)do rougher surfaces tend to create more friction than smooth surfaces?