Which cells are produced during the first few divisions of the zygote?

a. epithelial cells

b. cardiac muscle cells

c. bone cells

d. embryonic stem cells

The strongly acidic nature of DNA poses a problem. Why do Watson and Crick think that the DNA "dyad", formed by hybridization of two negatively charged molecules, is stable?

In this investigation, you analyzed brightly colored line spectra. could you still succesffully complete this investigation if you were colot-blind

What is meant by partially permeable membranes.

Which of the following is a benefit of having a standard measurements system that can be used by scientist worldwide

What group do organisms that can photosynthesize fall under?

Technology has allowed us to not only see detailed structure of organelles, but it has also allowed us to see molecular machines, carrying out highly sophisticated tasks. true false

Which ocean borders Africa on the western coast

When doing a geographical analysis of a population, it is important to only look at one scale. a. true b. false

Food manufacturers want to prevent small bits of metal from entering their product how might magnets be used

Describe at least three things you can learn about a fetus by taking a sample of the mother's blood.