The expression of the lac operon in an

e. coli cell missing the gene that encodes for the lac repressor will: increase when lactose is present. decrease when lactose is present. decrease when glucose is present. increase when glucose is present.

Catabolic metabolism is basically the opposite of anabolic metabolism. True False

Energy must be transformed in ecosystems because

Medical science provides many ways to diagnose the cause of infertility and to treat it. Which procedure involves "washing" to separate healthy sperm from the unhealthy ones, and then placing this concentration of healthy sperm into the uterus

Ductility describes the ability of a substance to deform without breaking or fracturing. This physical property allows metallic materials to be drawn into wires or stamped into sheets.

5. Which is the term for numbers that appear in the chemical formulas of some compounds? A coefficients B subscripts C square roots D exponents

When an accurate experiment is repeated by another scientist, the results A) should be similar to those obtained originally. B) will be identical every time the experiment is repeated. C) should be completely different for a different scientist.

1. Which of the following forms all matter?

True or false Sedimentary rock can be formed from changes in igneous rock, but igneous rock cannot be formed from changes in sedimentary rock.

When a protein is denatured, why does it lose its functionality?

This is a rotating machine that converts the kinetic energy of the wind into mechanical energy. If the mechanical energy is used directly by machinery, such as a grinding stone, the machine is usually called a windmill.