How does a catalyst work?

A - by increasing the temperature of a chemical reaction

B - by decreasing the pressure of a chemical reaction

C - by increasing the concentration of reactants in a reaction

D - by decreasing the activation energy of a reaction

In one sentence describe what happened to the DNA during cell division

Which material allows messages to travel down the neurons much faster? a. myelin b. astrocytes c. glia d. gray matter?

The Magnuson Act states that fisheries management officials must pay attention to protecting fish habitat. Which of the following fishing techniques would be most destructive to fish habitat? Select one: a. Drift netting b. Long lining c. Trawling d.

Why cant we see the cells of us with our eyes

In a bacterial cell the genes are free in the cytoplasm. In what cell structure are the genes in plant and animal cells?

During upwelling, nutrient-rich water rises to the surface. How would this most likely affect the biotic components of the ecosystems where the upwelling is taking place?

Determine whether each activity impacts land resources in a positive or negative way. Drag each term to the correct category.

1. List 2 examples of positive feedback loop in you body 2. List 2 examples of negative feedback loop in your body

Which of the following genotypes is homozygous recessive? A.) ss B.) Bb C.) TT D.) XY

If each normal body cell of a human contains forty-six chromosomes, then the number of chromosomes in a human egg will be