Which of the following is NOT suspected of causing generalized anxiety disorder? a) environmental factors
b) role of learning
c) heredity
d) brain tumors

'which of these statements about the scientific method is not true? all experiments must follow the same number of steps in the procedure. experiments may be repeated several times. some unexpected results can be beneficial. experimental results may or may not support the hypothesis.

Which of these parts of the membrane large moecules pass through it ?

During binary fission, what events must occur before the cell splits into two new cells?