At its carrier sites a hemoglobin molecule can combine with?

A: oxygen, carbon dioxide and carbon monoxide

B: oxygen, carbon dioxide and nitrogen

C: oxygen and carbon dioxide

D: oxygen and carbon monoxide

A friend explained to you that she combined two substances and saw a color change. What additional information would you need to determine if this change was a chemical or physical change?

Regarding plasma membranes, which of the following statements is false? (A) Cholesterol can increase the fluidity of plasma membranes that are rich in saturated fatty acids.

Which statement about analogies is correct? They occur only as errors. They are synonymous with homologous traits. They are derived by similar environmental constraints. They are a form of mutation.

In which way do viruses depend on living cells? a. they get nutrients by entering cells b. they get energy from photosynthesis c. they make copies of themselves using cell parts d. they develop into larger viruses using cell parts

Alternative energy source are always dependent upon favorable weather conditions

11. In 2007, scientists broke open a fossil of a dinosaur bone and found some preserved tissues. Analysis showed that some proteins in these tissues are very similar to proteins found in modern chickens.

A client who consented to electroconvulsive therapy (ect) is being prepared for the second session. the client tells the nurse, "i've decided that i don't want this treatment." what is the best response by the nurse?

What does a completely filled circle represent on a pedigree chart? A female carrier of a disease A male carrier of a disease A female with a disease A male with a disease

A beaver is an organism composed of many different types of cells

If a body cell with 10 chromosomes goes through mitosis, how many chromosomes will be in each new daughter cell A) 20 B) 5 C) 0 D) 10