Erwin Chargaff observed that the proportions of adenine (A) and thymine (T) bases were always equal, as were the proportion of guanine (G) and cytosine (C). Chargaff's observation suggests which of the following statements?

What type of solution is perfect for animal cells?

3. What characteristic (s) are scientists trying to give chickens by cloning? A. More white meat and smaller bones. B. Resistance to diseases. C. More meat and laying many eggs. D. Black and white feathers and faster growth.

Sally has a tumor. in an effort to fight the cancerous cells her body increases the production of

A low secretion of luteinizing hormone (LH) in the normal male adult would cause A. shrinkage of the anterior pituitary gland B. decreased testosterone secretion C. excessive beard growth D. increased spermatogenesis

How did the extinction of the dinosaurs affect the evolution of mammals

In the 20th century where did the most ecologically destructive oil spill in the US

Which of the activities listed below are functions of the Lymphatic System? 1 transports lipids to the blood 2 transports lipid-soluble vitamins to the blood 3 drains excess interstitial fluid from tissue spaces and returns it to the blood 4

Under which circumstances must facilitated diffusion be used instead of simple diffusion?

The biochemical analysis of different chlorophyll pigments in plants would be most useful in determining ... question 3 options:

The colors on the map above show the locations of the major tectonic plates that make up the Earth's crust. Which city on the map is most likely to experience a major earthquake?