A. True
B. False
2007-05-29 13:03:58 · 8 answers · asked by chanelbabe 2 in Science & Mathematics ➔ Biology
False. Some bacteria have flagella or cillia to move in the direction of food.
2007-05-29 13:08:11 · answer #1 · answered by freesince1776 5 · 1⤊ 0⤋
B. False. There are lots of unicellular organisms out there surviving, namely BACTERIA which have existed long before multicellular organisms.
2007-05-29 13:21:43 · answer #2 · answered by eyeswideopen37880 3 · 0⤊ 0⤋
False, mostly, because it depends on your definition of "purposely." Amoebae have no trouble moving in the direction of something that they sense to be food; their motion otherwise might be considered undirected.
2007-05-29 13:09:29 · answer #3 · answered by Brook M 2 · 0⤊ 0⤋
false, many prokaryotes have cellular 'motors' called flagella that acts like a propellor to move a bacterium. they use a process known as chemotaxis where they seek out chemical concentration and then "drive" themselves towards or away from a concentration.
2007-05-29 13:09:29 · answer #4 · answered by Anonymous · 0⤊ 0⤋
B. False
2007-05-29 13:07:06 · answer #5 · answered by Jeremy T 1 · 0⤊ 0⤋
B
Haven't you ever seen single celled organisms move around under a microscope?
2007-05-29 13:13:26 · answer #6 · answered by Roman Soldier 5 · 0⤊ 0⤋
B. false.
For example: Bacteria are single cellular and they can move through its environment easily.
2007-05-29 13:09:42 · answer #7 · answered by DeadManWalking 4 · 0⤊ 0⤋
Very much false. Look at paramecium and amoebas.
2007-05-29 13:06:33 · answer #8 · answered by Lady Geologist 7 · 0⤊ 0⤋