schaum''s easy outline molecular and cell biology - william stansfield, raul j cano, jaime s colome

... prophase I of meiosis, homologous chromosomes pair CHAPTER 1: Cells 13 Figure 1-6 Meiosis in plant cells. Figure 1-6 Meiosis in plant cells, continued. 16 MOLECULAR AND CELL BIOLOGY up in a process ... prokaryotes. These chains consist of se- ries of proteins that first serve as electron acceptors, then donors to the next complex in the chain. This series of coupled oxidations and...

Ngày tải lên: 08/04/2014, 12:52

... possess only salvage value or scrap value. The accrual basis of accounting demands a period- by-period matching of costs against derived revenues. Hence the cost of a fixed asset (over its scrap ... receipt and disbursement of cash far outnumber any oth­ er kinds of transactions. Cash is, moreover, the most liquid asset and most subject to theft and fraud. It is, therefore, essential...

Ngày tải lên: 13/12/2013, 14:53

... ECM components facilitates angiogenesis and ⁄ or tumour cell migration. Many proteases, including secreted and cell- surface metalloproteinases, and some serine peptidases, have roles in these processes. ... antigen-presenting cells at the immuno- logical synapse for T cell ⁄ antigen-presenting cell inter- actions [81]. Stimulation of CD26 also causes IL-1 receptor-associated se...

Ngày tải lên: 06/03/2014, 09:22

... basics of mitosis and meiosis as well as regulation of cell cycle events. Tissue biology is the third section of the book, and it encompasses the tissues of the body: epithelium, connective tissue, ... periendothe- lial cells form from local mesoderm and differentiate into muscle and connec- tive tissue elements (i.e., smooth muscle, fibroblasts, and pericytes). That process is...

Ngày tải lên: 22/03/2014, 21:20

... Loading and Apoptosis 21 Key Signaling Players in Neuronal Apoptosis 22 Conclusions 25 2. NEURONAL SURVIVAL AND CELL DEATH SIGNALING PATHWAYS 41 Richard S. Morrison, Yoshito Kinoshita, Mark D. Johnson, ... in epilepsy, studies on traumatic injury have been sparse and there is less evidence for the implicated modes of cell death. Some studies have suggested the sudden release of exc...

Ngày tải lên: 08/04/2014, 12:51

... elongated, some less so, some round particles) show that there is a population of randomly oriented proplastids in the cells. Some are more-or-less cylindrical and others may be more-or-less spherical. ... cells proper. The former consists of intercellular spaces and cell walls. Each protoplast consists of a nucleus (or sometimes several nuclei) and the cytoplasm. Within these are...

Ngày tải lên: 08/04/2014, 12:52

... guidelines, histone lysine demethylases are named K-demethylases and the LSD1-like enzymes are named K-demethylase 1 proteins. This minireview focuses on LSD1 without involving its orthologs or JmjC ... post-translational modification. LSD1 interacts with CoREST, a co-repressor protein that binds REST and recruits other histone-modifying enzymes such as histone deacetylases 1 ⁄ 2. The func...

Ngày tải lên: 16/03/2014, 02:20

... Other drugs cause extensive DNA damage, which stops replication. A class of drugs called spindle inhibitors stops cell replication early in mitosis. During mitosis, chromosome separation requires spindle ... fibers made of microtubules; spindle inhibitors stop the synthesis of microtubules. Because most adult cells don’t divide often, they are less sensitive to these drugs than are cancer c...

Ngày tải lên: 29/03/2014, 01:20