Enzymes are catalysts because they

lower the

of a chemical

reaction

During a routine prenatal visit, ms. t. was noted as having dependent edema, varicosities of the legs, and hemorrhoids. she expressed concern about these symptoms. you explain to ms. t.

Which of the following is not a process in the nitrogen cycle?

When the heterozygous phenotype is a blend or an intermediate of the two homozygous phenotypes, it is called

Which of the following are the reactants in cellular respiration? Carbon dioxide, ethanol, and energy Glucose and oxygen Lactic acid and energy Glucose, carbon dioxide, and energy

Which type of organism developed first?

The primary purpose of deregulation is to a. decrease competition in the affected industries. b. remove certain industries from old-line economic regulations. c. protect the natural environment. d. allow natural monopolies to form.

Assume that a cross is made between AaBb and aabb plants and that the offspring occur in the following numbers: 106 AaBb, 48 Aabb, 52 aaBb, 94 aabb. These results are consistent with the following circumstance:

A cross between parents that differ in one trait

Which group consists entirely of organic molecules? 1) protein, oxygen, fat 2) protein, starch, fat 3) water, carbon dioxide, oxygen 4) water, starch, protein

In which layer of the atmosphere does most weather occur?