Which enzyme in

e. coli is responsible for relieving the tension ahead of the fork that results when the dna unwinds to form the replication "bubble" or "eye"?

Give an example of what could have happened if a known Gram negative sample looks like it is Gram positive? What about the inverse situation, where a known Gram positive sample looks like a Gram negative bacterial culture?

A female black cat mated with an albino male and gave birth to 6 black kittens. When the albino male was mated with a different female black cat, 3 black cats and 2 albino cats were produced.

Which of the following is powered by energy from Earth's interior & is believed to be the reason that tropical fossils are found in Antarctica?

Which observations show that a change in state of matter has occurred? Wood burns, producing gas and an ashy residue. Overnight, dew forms on the grass. An alkali indicator changes color when added to a cleaner. Vinegar has a strong smell

A physician examines a patient who complains of breathing problems. She finds fluctuations in the patient's blood pressure and heart rate. The physician thinks it's because of a brain injury. Which part of the brain is affected? A. Cerebellum B.

What is a organism that makes their own food?

How many trophic levels are there in the following food chain? algae mosquito larvae dragonfly larvae - trout

If you were shipwrecked on the northwest shore of the sea of okhotsk, which of these physical regions would you most likely be closest to?

Why does the nucleus have a positive charge?

Why would the solution not be considered to be in equilibrium? The solvent molecules are not all located on the right side of the container. The solute molecules are not evenly distributed throughout the solvent.