BIOL 102 Midterm

6 Which of the following form the cellular membrane A-Phospholipids B-Neutral fats C- Steroids D- Sugar

A-Phospholipids

2 science dealing with body functions is called A-physiology B-cytology C-anatomy D- histology E- biology

A-physiology

8 Regulation of blood pressure is an example of A. Bio feedback system B Negative feedback system C. Positive and negative feedback systems D. Positive feedback system

B Negative feedback system

21 Ions with positive charges are called: A. Anions B. Atoms C. Cations D. Radicals

C. Cations

5 The process by which unspecialized cells become specialized cells is called A-anabolism. B-catabolism. C-metabolism. D-differentiation. E-homeostasis.

D-differentiation.

5 How many layers of lipid comprises plasma membrane A 3 layers. B one layer. c. Bilayer

c. Bilayer

9 Thoracic and abdominopelvic cavities are separated by? A. Diaphragm B. ,spleen C. ,sternum D. stomach

A. Diaphragm

10 The plane that separates the anterior and posterior portions of object is called? A. Frontal plane, B. horizontal [lane C. median plane D. Transverse plane

A. Frontal plane,

22 Which of the following level of organization consists of related organs that have a common function? A. System B. Organ C. Organismal D. Tissue

A. System

7 Which of the following is a destructive ion or molecule that has an unpaired electron in its outermost shell? a- Molecule - B- free radical c- compound d-electron

B- free radical

1 Which of the following ensures that the body's internal environment remains constant despite changes inside and outside the body? A-Metabolism B-Homeostasis C- Responsiveness D-Differentiation

B-Homeostasis

14 Which of the following divides body (or organ) into equal left and right portions? A. Frontal plane B. Median section C. Sagittal section D. Transverse section

B. Median section

4 The sum of all chemical processes that occur in the human body is referred to as A-anabolism. B-catabolism. C- metabolism. D-differentiation. E- homeostasis

C- metabolism.

23 .Which one of the following features of the plasma membrane permits some substances to cross more easily than others? A. Impermeability B. Permeability C. Selective permeability D.Ultra filtration

C. Selective permeability

15 Which of the following bonds are formed when outer shell electrons are transferred from one atom to another, the transfer forms ions with unlike charges that attract the ions to each other? A. Covalent B. Hydrogen C. ionic D. Polar covalent

C. ionic

3 The level of organization when different multiple types of tissues join together is called the A-chemical level B-cellular level C-tissue level D-organ level E-system level

D-organ level

4 The movement of molecules from an area of less concentration to an area of high concentration is known as a. Active participation b. Diffusion c. Facilitated diffusion

a. Active participation

19 Which of the following contains the genetic code in human cells? a. DNA b. enzymes c. RNA d. glucose e. ATP

a. DNA

2 Which of the following part of the cell separates the internal environment from the external environment of the cell ? a. Plasma membrane b. golgi. C cytoplasm . D centrosomes

a. Plasma membrane

20 combining atoms of two or more different elements results in a(n) a. compound. b. ion. c. free radical. d. electrolyte. e. superoxide.

a. compound.

7 What best defines extracellular fluid between cells in tissues? a-intracellular b-interstial

b-interstial

11 Which of the following is the long branching chains of monosacharides? a- Celluolose b- Monosacharides c- Poly saccharides d- Di sacharides

c- Poly saccharides

1 The movement of molecules from an area of greater concentration to an area of lesser concentration is known as: a. Absorption b. Calcification c. Diffusion d. Osmosis

c. Diffusion

3 What is an osmosis? a. A moving cell engulfs something. b. Movement of molecules from an area of lesser concentration to greater concentration c. The diffusion of water

c. The diffusion of water

13 Which of the following is the correct level of structural organisation of the human body? a- Cell - organism-tissue - organ-chemical b- Chemical-tissue -cell - organism- organ c- Tissue- organ-organism -chemical- cell d- Chemical- cell-tissue- organ-organism

d- Chemical- cell-tissue- organ-organism

12 Which of the followimg is substance consists of two or more atoms,share electrons and resulting combination of atom is called a- Compound b- Chemical bond c- Free radical d- Molecule

d- Molecule

6 Which of the following inorganic compounds is excellent solvent, serves as a lubricant and participation in chemical reactions? a- Acids b- Base c- salts d- water

d- water

17 The nucleus of an atom contains a. electrons. b. protons and electrons. c. neutrons. d. protons and neutrons. e. electrons and neutrons.

d. protons and neutrons.

18 if an enzyme is exposed to an extremely high temperature, it will a. divide. b. release energy. c. become an electrolyte. d. form hydrogen bonds. e. denature

e. denature