Bio 240 Anatomy&PhysiologyI; Lecture is1 Sumer 2017 tustructor Dr. Precious Alaw
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Question
Bio 240 Anatomy&PhysiologyI; Lecture is1 Sumer 2017 tustructor Dr. Precious Alawar PART wo.ESSAYOLES I IONS SEC? ON Diagrammatis illustrations in any anwer where needed, will cam more pointa. Note - Answer all S questions All questions carries 10 points cach 1. Brietly define the following a) A cell b) A tissus ) An organelle d) An organ e) An organism D An organ system 2. Bricity discuss all the characteristics of tife that you know Question 3 A) Define Energy, and brietly state the 2 Laws of Conservation of Energy B) Brieftly define the different types of chemical ractions you know C) Discuss bniefty, the difterent factors that can affect the rates of chemical reactions in our body Question 4 A) Define Metabolism, Catabolism, and anabolism. B) Define Bio-molecules and what are the major types or groups you know C) Briefly deseribe the structures of proteins D) What is an enzyme, a substrate and Competitive enzyme inhibition Question S a) What is the cell membrane and describe its structure and components b) List the types of proteins found in the cell membrane c) List the functions of the cell membrane proteins d) List and brietly discuss 3 surface extensions of the cell membraneExplanation / Answer
1. Definations:-
(a) Cell:- it is structural and functional unit of the body.
-Cells are the basic unit of life.
- living organisms are either single cells or multicellular.organisms composed of many cells working together.
(b) A tissue:- these are groups of cells that have a similar structure and act together to perform a specific function.
- Example- group of muscle cell.
-There are four types of tissues in animals-
connective
muscle
nervous
epithelial
(C) An organelle:- A membrane-bound structure in a cell that performs a special function.
- A eukaryotic cell contains many organelles, for example-
the nucleus
endoplasmic reticulum
mitochondria
chloroplast
(D) An organ:- it is a self-contained group of tissues that performs a specific function in the body.
- Example- The heart
liver
stomach
Kidney
(E) An organism:- it is a form of life composed of interdependent parts that maintain various vital processes.
- form of life considered as an entity,an animal, plant, fungus etc.
- organism is any individual entity that exhibits the properties of life.
(F) An organ system:- it is a group of anatomical structures that work together to perform a specific function in body.
- A group of related tissues and organs make up a system.
- For example- blood, heart, capillary, veins make up the circulatory system.
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