Which long tube carries food from the mouth to the stomach? a) esophagus b) small intestine c) large intestine d) liver

Which of the following is the best definition of generation time? A) The length of time needed for lag phase B) The length of time needed for a cell to divide C) The minimum rate of doubling D) The duration of log phase E) The time needed for

At what temperature does sea ice form in the polar oceans? A. 0°C B. -0.5°C C. -1.9°C D. -2.4°C E. -32°C

What is usually the origin of a non-standard amino acid residue found in a polypeptide chain?

Cyclins are a family of closely related proteins that a. regulate the cell cycle b. cause cancer c. produce lipids

Characteristics of mitosis?

Which of the following statements is true? a) When you add heat to a substance, its temperature usually increases. b) When a substance gives off heat, its temperature increases. c) Heat and temperature are the same.

What kinds of changes in a cell do second messengers usually causes?

Why did Gregor Mendel use peas in his experimentsGregor Mendel's research formed the basis of the field of

Why does the shape of moon change when seen from earth

How the insect grow although their body is entirely covered by chitin which is non elastic and non fexible