[عبدالرحمن ااحمد]

Helping Questions for 1st Periodical Exam

1. Biology is ________________________________________ .
a) the science of human
b) the science of life in all its living forms
c) the study of environments
d) the scientific study of chemical agents
e) the science of all forms on earth

2. A group of similar _________ are organized into tissues.
a) organs
b) organ systems
c) cells
d) organelles
e) organisms

3. Which of the following is Life’s hierarchy of organization in an ascending (up) order?
a) community, population, ecosystem, biosphere
b) population, community, ecosystem, biosphere
c) population, ecosystem, community, biosphere
d) ecosystem, biosphere, community, population
e) community, biosphere, population, ecosystems

4. Photosynthetic organisms :
a) provide food.
b) are called producers.
c) are called consumers.
d) do not contain pigment.
e) a and b are correct choices.

5. Which of the following is a characteristic of the eukaryotic cell?
a) Presence of organelles separated by membranes.
b) Absence of the nuclear membrane.
c) Absence of genetic material.
d) A group of different cells.
e) Simple cells having different shapes.

6. The cells of all prokaryotes and eukaryotes possess two basic features a _________ and _____________.
a) nucleus – cytoplasm
b) nucleus - plasma membrane
c) plasma membrane – cytoplasm
d) nucleus – mitochondria
e) all of the above choices are correct

7. The genetic material of___________ is not surrounded by a nuclear membrane.
a) bacteria
b) fungi
c) plants
d) fungi and bacteria
e) animals

8. The discrete unit of DNA is called ________________.
a) nucleus
b) genetic material
c) gene
d) nucleolus
e) chromosome

9. The genetic (hereditary) material of plant cells is:
a) proteins
b) carbohydrates
c) lipids
d) lipoprotein
e) DNA

10. The characteristics of life include all of the following EXCEPT:
a) energy processing.
b) not to interact with the environment.
c) self-regulated bolism.
d) response to stimuli.
e) growth.

11. Archaea belongs to ___________________.
a) animalia
b) prokaryotes
c) fungi
d) plantae
e) eukarya

12. Any experiment should have a __________ group.
a) subjective
b) control
c) valid
d) central
e) objective

13. A _________is supported by a large and usually growing body of evidence.
a) hypothesis
b) experiment
c) method
d) conclusion
e) theory

14. Anything that occupies space and has mass is known as a (an) ___________
a) element.
b) matter.
c) molecule.
d) compound.
e) atom.

15. Which of the following elements are considered trace elements?
a) Cu, Zn, Mn
b) Mg, Fe, Cl
c) P, C, N
d) N, Na, K
e) Si, F, I

16. Which of the following is NOT an element?
a) Amino acid.
b) Sugar.
c) DNA.
d) Hydrochloric acid.
e) All of the above choices are correct.

17. Without __________, your body cannot transport oxygen.
a) iron.
b) iodine.
c) calcium.
d) cupper.
e) sodium.

18. Which of the following subatomic particles has a single positive electrical charge?
a) Electron.
b) Neutron.
c) Proton.
d) Sub neutron.
e) Energy levels.

19. Atoms of an element which have the same atomic number, but different mass number are called _______________.
a) isoenzymes
b) isotopes
c) isophores
d) isolates
e) isoelectrons

20. All of the following are inorganic compounds EXCEPT:
a) sulphuric acid.
b) protein.
c) magnesium chloride.
d) sodium hydroxide.
e) potassium sulphate.

21. The movement of water from the roots of a tree to its leaves depends on:
a) cohesion alone.
b) adhesion alone.
c) diffusion.
d) cohesion and adhesion.
e) cohesion, adhesion and diffusion.

22. In a water molecule, the shared electrons spend more time near ____________.
a) oxygen
b) hydrogen
c) the covalent bond
d) both oxygen and hydrogen
e) the center of the molecule

23. An acidic solution has a higher concentration of _______________.
a) H+ than OH–
b) OH– than H+
c) O-– than H+
d) H+ than O—
e) OH– than O—

24. Peoples who cannot digest milk-based foods are __________ intolerant.
a) milk
b) food
c) fat
d) lactose
e) protein

25. Polymers are broken apart by ___________________.
a) hydrolysis
b) denaturation
c) dehydration
d) isolation
e) deformation

26. One molecule of glucose and one molecule of galactose form_____________
a) maltose.
b) sucrose.
c) lactose.
d) isomaltose.
e) none of the above choices are correct.

27. ___________ are the main components of biological membranes.
a) Lipids
b) Phosphates
c) Cholesterol
d) Carbohydrates
e) Phospholipids

28. Subunits of ribosomes are manufactured in the _______________
a) cytoskeleton.
b) endoplasmic reticulum.
c) Golgi apparatus.
d) lysosomes
e) nucleolus.

29. Which of the following types of tissues are found in the respiratory tract?
a) Simple columnar epithelium.
b) Stratified squamous epithelium.
c) Simple cuboidal epithelium.
d) Ciliated columnar epithelium.
e) Pseudostratified ciliated columnar epithelium.

30. Striated muscle is also called ___________________.
a) cardiac muscle
b) smooth muscle
c) skeletal muscle
d) involuntary muscle
e) all of the above choices are correct