Which human cells never have 23 pairs of chromosomes? . a. blood cells. b. nerve cells. c. mature sex cells. d. mutant cells

Out of the seven main animal groups (fish, mammals, birds, insects, reptiles, amphibians, and arachnids), how many contain members with internal backbones? a. 5 b. 3 c. 7 d. 1

What is the name of the type of cell division that occurs in the prokaryotic cell cycle

Linda and julia are trying to determine whether their ideas are scientific or pseudoscientific. linda's idea is free of bias. julia's idea gives the same result when tested repeatedly. which statement is correct about linda and julia's idea?