Question 4

During which era did plants first appear on land?

Cenozoic

Mesozoic

Paleozoic

Precambrian

One function of gel electrophoresis is to a. separate DNA fragments. c. recombine DNA. b. cut DNA. d. extract DNA.

Early one spring, a group of bird-watchers counted 30 different species of birds in a tract of forest. In the early spring two years later, the bird-watchers counted 15 species in the same area.

The inflammatory response increases the temperature of a skin cell above its normal range. This prevents the cell from quickly performing certain enzyme-catalyzed reactions.

If plants make sugar, then what elements must be found in starches?

What is the name of the process that occurs when complementary pieces of dna or rna bind to each other?

The degradation of alanine yields pyruvate and the degradation of leucine yields acetyl coa. can the degradation of each of these amino acids directly replenish the pool of tca intermediates? explain why or why not.

How does the Arthropod growth curve differ from the growth curve of most other animals?

Which of the following microscopes has the lowest resolution TEM SEM dissecting electron

The process where sediments turn into a sedimentary rock through compaction or cementation is called

Which group of microorganisms is most likely to spoil a freshwater trout preserved with salt? A) Psychrophiles B) Facultative halophiles C) Anaerobes D) Thermophiles E) Hyperthermophiles