a. DNA, RNA, mitochondria
b. membrane, DNA, cytoplasm
c. mitocgondria, chloroplasts, membranes
d. a membrane, organelles, a nucleus
2007-03-23 06:22:06 · 11 answers · asked by Anonymous in Science & Mathematics ➔ Biology
All cells, whether prokaryotic or eukaryotic, have a membrane that envelops the cell, separates its interior from its environment, regulates what moves in and out (selectively permeable), and maintains the electric potential of the cell. Inside the membrane, a salty cytoplasm takes up most of the cell volume. All cells possess DNA, the hereditary material of genes, and RNA, containing the information necessary to build various proteins such as enzymes, the cell's primary machinery. There are also other kinds of biomolecules in cells. This article will list these primary components of the cell, then briefly describe their function.
Long story short, B.
2007-03-23 06:28:22 · answer #1 · answered by Jeremy S 2 · 0⤊ 0⤋
i assume this question is for a basic biology or science course, because all of the answers are wrong. all cells should have a membrane, all cells have organells of some sort, but not all cells contain DNA or nuclei. The best example is a red blood cell, which contains no nucleus or DNA. To go further, viral cells contain no nucleaus or DNA as well. that is why they need host cells.
B, would be the best answer, but none are correct
2007-03-23 07:00:09 · answer #2 · answered by ryanklee66 2 · 0⤊ 0⤋
b-all cells have membranes, DNA and cytoplasm.
Some cells do not have mitochondria (bacterias) and entamoebas, for example. Chloroplasts are specific for plant cells. Some cells do not have a nucleus (again bacterias, and if we get picky...red blood cells do not have a nucleus anymore-reticulocytes do (immature red cells)).
2007-03-23 06:36:11 · answer #3 · answered by Lis 3 · 0⤊ 0⤋
b. prokaryotic cells do not have a nucleus and mitochondria or any membrane bound organelles. When red blood cells are produced they contain a nucleus.
2007-03-23 06:26:17 · answer #4 · answered by ATP-Man 7 · 1⤊ 0⤋
observe: the guy who pronounced e book might have over regarded that the paper is ususally created from the ineffective palnt cells and the plant cellular's cellular partitions. in and organism: drinks like the fluid area of blood, bile, spoinal fluid and so on observe there could be cells interior the fludig yet they don't look to be the drinks. bone deposits after the cellular has died; deposits of crystals and their structures (salts) mineral deposits like gall stones, kidney stones, or the crystals that case the ailment observed as gout.
2016-10-19 10:44:18 · answer #5 · answered by ? 4 · 0⤊ 0⤋
None of the above, but if you must choose from these, choose B.
My reasoning for "none" is that we call mammalian red blood cells "cells." They don't have nuclei or internal organelles. Answer "B" but bring up red blood cells, which don't appear to do anything with DNA, with your teacher.
2007-03-23 07:21:40 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Good idea. I'm goin to start using Yahoo Answers to do my homework to.
2007-03-23 06:33:12 · answer #7 · answered by mopartimross 3 · 0⤊ 0⤋
Definitely b).
2007-03-23 06:44:18 · answer #8 · answered by Petrolea 2 · 0⤊ 0⤋
b
2007-03-23 06:26:32 · answer #9 · answered by phantom57212 3 · 0⤊ 0⤋
My guess would be "b".
2007-03-23 06:26:46 · answer #10 · answered by TitoBob 7 · 0⤊ 0⤋