of the following are located in the cytoplasm except: (choose one only) a) chloroplast b) nucleolus c) rough endoplasmic reticulum d) mitochondria e) lysosome

Which of the following statements about cell membranes is NOT true? A) Membranes are sheet like structures, only two molecules thick, that form closed boundaries between different compartments. B) Membranes consist mainly of lipids and proteins. C) Membranes are very rigid, impermeable structures Membrane lipids are small molecules that have both hydrophilic and hydrophobic moieties. D)

1) The activity of the cell cycle is controlled by the abundance of:  A) protein ligases and protein kinases B) protein kinases C) protein ligases D) protein kinases and cyclins E) cyclins    Eukaryotes - prokaryotes? Which are the latter? A) bacteria  B) animals C) tardigrades  D) plants  E) fungi  During translation the ribosome:  A) reads the DNA from 5' to 3'  B) ribosomes are not involved in translation C) reads the RNA from 3' to 5'  D) reads the DNA from 3' to 5'  E) reads the RNA from 5' to 3'

An example of a cell differentiation might include  A) A cell traveling to its ultimate destination in the developing body  B) Embryonic stem cells changing into liver and kidney cells  C) Division of a zygote into many cells, all containing genetic material  D) Unused neurons getting pruned away