Living things are made up of one of two types of cells: either prokaryotic or eukaryotic. Euglena are examples of single-celled microorganisms that survive individually.Answer and Explanation: Euglena are unicellular, eukaryotic microorganisms. This means that the euglena is made up of one complex ...
The nucleolus, also called a nucleole, is a cellular structure found within the nucleus of eukaryotic cells. There can be many nucleoli within a single cell nucleus, although normal human cells all have only one nucleolus. It is composed of nucleic acids and proteins and is responsible for ...
Cells are categorized as prokaryotic or eukaryotic. Typically, eukaryotic cells are much larger in size than prokaryotic cells. Moreover, they contain nuclei and a variety of specialized functional units known as organelles. Answer and Explanatio...
Which of the following is a characteristic of prokaryotic cells? A. Have a nucleus B. Have membrane-bound organelles C. Smaller in size D. More complex structure 相关知识点: 试题来源: 解析 C。原核细胞的特征之一是体积较小。原核细胞没有真正的细胞核,也没有膜包被的细胞器,结构相对简单。
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A eukaryotic cell, in fact, is demarcated by its possession of a clearly defined nucleus. Prokaryotic cells do not store their genetic information within a membrane-protected structure like a nucleus; instead, they contain a region referred to as a nucleoid, an area in the center of a cell'...
Explain how DNA is used to generate proteins in prokaryotic and eukaryotic cells. What are two distinguishing characteristics of prokaryotes? The eukaryotic cell organelle that most resembles a bacterial cell is the: A. nucleus B. Golgi apparatus C. mitochondria D. ...
Prokaryotic cell lacks a membrane-bound nucleus, mitochondria, and any other membrane-bound organelle. Prokaryotes are further divided into, Archaea and Bacteria.Components of prokaryotic cells 1.Plasma membrane: An outer covering that separates the cell’s inner environment from its surrounding ...
In contrast, if the DNA is partitioned off in its own membrane-bound room called the nucleus, then that cell is a eukaryote. Some eukaryotes, like amoebae, are free-living, single-celled entities. Other eukaryotic cells are part of multicellular organisms. For instance, all plants and ...
e.toward or away from a chemical stimulus f.engulfment g.RNA and ribosomes h.weblike i.in plants only j.control room k.expel l.vacant m.whiplike n.cell drinking o.packaging Ⅱ. True or false 1.___ The DNA of prokaryotic cells is concentrated in the nucleus. 2.___ Ribosomes are...