The DNA of eukaryotes is contained within a nucleus whereas prokaryotic DNA is found freely in the cytoplasm in a region called the nucleoid. Prokaryotes also contain extrachromosomal DNA called plasmids which eukaryotes don’t. Types of Animal Cells The cells of an animal all contain the same DN...
1. What is the cell membrane? 2. What does it contain? How does it function? 3. Is it prokaryotes or eukaryotes? Which organelle is not found in an animal cell? (a) nucleus (b) cell wall (c) cell membrane (d) mitochondria. ...
Prokaryotes: 30S and 50S Eukaryotes: 40S and 60S Each subunit consists of ribosomal RNA and proteins . Present in the cytosol , as part of RER, and in mitochondria Function: Translation of RNA and protein synthesis Protein folding Ribosomes (composed of a small and large subunit) translate...
(a) Prokaryotes have cells while eukaryotes do not (b) Eukaryotic cells have more intracellular organelles than prokaryotes (c) Prokaryotes are generally larger t___ are membrane-bound organelles that contain ___ enzymes, which are important for their...
Cavalier-Smith (1981) lists 22 characters which he considers to be universally present in eukaryotes but absent from prokaryotes. These distinguishing characteristics of the eukaryotic cell fall into three broad groups; (1) those associated with the siting, form, production and expression of nucleic ...
in prokaryotes, DNA is organized into a single circular chromosome. In eukaryotes, chromosomes are linear structures. Every eukaryotic species has a specific number of chromosomes in the nucleus of each cell. For example, in humans, the chromosome number is 46, while in fruit flies, it is ...
There was no oxygen gas (O2) in the atmosphere, and the only life forms on Earth were single-celled prokaryotic organisms similar to present-day bacteria. Some of these prokaryotes, called cyanobacteria, evolved the ability to capture the energy in sunlight to make organic molecules. Because of...
Before we begin looking at individual organelles, we do need to briefly address the matrix in which they sit: thecytoplasm. The part of the cell referred to as cytoplasm is slightly different in eukaryotes and prokaryotes. In eukaryotic cells, which have a nucleus, the cytoplasm is everything...
A. In Complex Intracellular Structures in Prokaryotes Microbiology Monographs vol. 2, (ed Shively, J.M.) 79–114 (Springer, 2006). Martinez-Planells, A. et al. Determination of the topography and biometry of chlorosomes by atomic force microscopy. Photosynth. Res. 71, 83–90 (2002). ...
Flagella is a filamentous organelle, the structure of which, is different in prokaryotes and eukaryotes. In prokaryotes, it is made up of the protein called flagellin wrapped around in a helical manner creating a hollow structure at the center throughout the length. ...