Why can't a plant take in nitrate ions when the soil is flooded? (5 marks)

Streams have a detecable current, while rivers do not

Sorry ignore this! I figured it out!

The bond energies in our genetic molecules (dna) are about 300 kj/mole. when dna absorbs a sufficiently energetic photon it can break bonds, and reactions can happen that lead to cancer.

4. Did the complete process of photosynthesis take place in the way you modeled it in this activity? Explain your answer.

If a codon in RNA was GAC, what would it's copy be?

1. true false Carbon atoms form the building blocks of most living things.

Inhibiting enzymes involved in cell wall synthesis leads to which of the following? A) cell death by osmotic lysisB) a reduction in protein synthesisC) the incomplete synthesis of the bacterial cell wallD) a reduction in the amount of usable energy

In the 20th century where did the most ecologically destructive oil spill in the US

Which of the activities listed below are functions of the Lymphatic System? 1 transports lipids to the blood 2 transports lipid-soluble vitamins to the blood 3 drains excess interstitial fluid from tissue spaces and returns it to the blood 4

Under which circumstances must facilitated diffusion be used instead of simple diffusion?