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Organ Systems : Organisms are composed of organ systems. Each organ system is made up of several different organs. For example, the digestive system is composed of several organs: the mouth, tongue, salivary glands, pharynx, esophagus, stomach, intestines, liver, and pancreas.
Organs are composed of two or more of the primary types of tissue: epithelial, connective, nerve, or muscle tissue. Tissues, in turn, are composed of groups of similar cells that perform specialized functions.
The human body is composed of various systems: integumentary system - which covers and protects the body; skeletal system - provides internal structure muscular system - provides mobility nervous system - coordinates voluntary and involuntary activity endocrine system - composed of hormone secreting glands cardiovascular system - circulates blood lymphatic system - part of the body's immune response respiratory system - provides oxygen for cellular respiration digestive system - provides nourishment and energy urinary system - serves to excrete wastes reproductive system - produces gametes for reproduction
Social Basis of Primitive Life: In the previous section, we gave you a glimpse of how the primitive human beings faced the problems of day to day existence and found some so
Do a bit of research on gene splicing, a DNA technology that bioengineers can use to create organisms with traits that never before seen in nature (herbicide-resistant crops, mice
Q. Conditions Necessary for Outbreak in salmonellosis? The food must contain or become contaminated with the Salmonella bacteria. These bacteria must be there in considerable n
Explain intravascular fluid compartment - extracellular fluid? The extracellular fluid compartment is sub-divided into the intravascular fluid compartment (fluid within the blo
Uses of Grafting Grafting helps to preserve and perpetuate varieties that cannot reproduce by vegetative method. Grafting changes less useful varieties to more desirable
Q. If a tRNA anticodon is CAA what is its corresponding mRNA codon? For the genetic code which amino acid does this codon codify? According to the C-G, A-U rule, the correspond
Which one of the following is not a lateral meristem? 1. Intrafascicular cambium 2. Interfascicular cambium 3. Phellogen 4. Intercalary meristem Intercalary m
How do the repairing enzymes of the genetic system act? There are enzymes within the cells that detect errors or alterations in DNA molecules and start a repair of those errors
Q. How long after ovulation must fecundation occur to be effective? If fecundation doesn't occur around 24 hours after ovulation the released ovum often dies.
Explain the Fluoride Toxicity? Fluoride is a cumulative toxin. Ingestion of fluoride 1.0-1.5 mg/L for several years may produce dental fluorosis, i.e. browning and pitting of t
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