The structure of DNA resembles a twisted ladder. Which structural components form the rings of the ladder?

A) deoxyribose sugars

B) phosphate groups

C) nitrogenous base pairs

D) ribosomes

Which of the following is not a way to increase the rate of dissolving? Evaporation Stirring Increasing Temperature Using a smaller particle size

Which of the following is an example of qualitative data? a. A solution contains copper ions b. A plant has five flowers c. A solar system has nine planets

Scientists have recently discovered two multicellular organisms with different components in their cell walls. The cell walls have two different polysaccharides, cellulose and chitin.

Which of the following is a nucleotide found in DNA? a deoxyribose + phosphate group + uracil b ribose + phosphate group + thymine c deoxyribose + phosphate group + cytosine d ribose + phosphate group + uracil

What is causing the bee population to decline?

When dust and ash particles from a volcanic eruption block out sunlight and reduce solar radiation, earth experiences the. This results in temporary climate cooling

Which of Jupiter's moons is volcanically active? Io Ganymede Europa Callisto

Risk assessment depends on

DNA is genetic material that makes up living things, and folic acid plays an important role in the formation of DNA. Jon wants to study the effect of folic acid on DNA formation in microbes.

Your alien friend from planet Xenon is visiting and wants to learn how to breed pea plants. You show your friend a recent batch of pea plants with purple flowers that you grew by crossing plants that had purple flowers with plants that had white