Bio Answers
Lecture Quiz- 10/9/2010 Answer Key
1. The scientific study of life is called:
- A. biology
- B. ecology
- C. anatomy
- D. biochemistry
- E. limnology
2. Human beings are _______________ because they are composed of many cell types.
- A. unicellular
- B. acellular
- C. asymmetrical
- l D. autotrophic
- E. multicellular
3. A/an _______ is composed of a group of similar cells that perform a particular function.
- A. organ
- B. system
- C. organism
- D. tissue
- E. population
4. Choose the CORRECT order (1-5) of increasing complexity/organization.
- A. 1) tissues, (2) organ systems, (3) cells, (4) organs, (5) organism
- B. (1) cells, (2) organ systems, (3) tissues, (4) organs, (5) organism
- C. (1) tissues, (2) organs, (3) organ systems, (4) cells, (5) organism
- D. (1) cells, (2) tissues, (3) organs, (4) organ systems, (5) organism
5. In an experiment designed to test the effect of temperature on goldfish respiration, the temperatures that were changed represent the ______ variable.
- A. control
- B. responding
- C. experimental
- D. correlative
- E. placebo
6. Which of the following is considered a basic tissue type?
- A. epithelial
- B. connective
- C. muscle
- D. nervous
- E. All of the above
7. ____________ exist as small biconcave blood cells that lack a nucleus when they are mature and carry oxygen throughout the body.
- A. Neutrophils
- B. Erythrocytes
- C. Platelets
- D. Monocytes
- E. Lymphocytes
8. ___________ receives sensory input, integrates data, and conducts impulses.
- A. Epithelial tissue
- B. Connective tissue
- C. Muscular tissue
- D. Nervous tissue
- E. Vascular tissue
9. The phospholipid bilayer that surrounds/maintains the integrity of a cell is called a:
- A. plasma membrane
- B. Sanger enclosure
- C. hydrophobic membrane
- D. dialysis membrane
- E. mosaic membrane
10. _____________ are small membranous structures that occur within the cell and have various functions.
- A. Matrices
- B. Organelles
- C. Cytoskeleton
- D. Golgi bodies
- E. Ribosomes
11. In the fluid-mosaic model of the plasma membrane, the phospholipid molecules are oriented so that the _____________ heads are facing the outside environment and the ________________ tails are facing the interior of the membrane.
- A. hydrophobic, hydrophilic
- B. hydrophilic, hydrophobic
- C. autotrophic, heterotrophic
- D. heterotrophic, autotrophic
- E. ectothermic, endothermic
12. The diffusion of water across a semi-permeable membrane is called:
- A. denaturation
- B. osmosis
- C. dispersion
- D. dissociation
- E. reconstitution
13. Choose the CORRECT statement about solute concentrations or particles inside and outside the cell.
- A. In a hypertonic solution, there are more particles inside the cell.
- B. In a hypotonic solution, there are more particles outside the cell.
- C. In an isotonic solution, the number of particles is equal.
- D. Lysis usually occurs when a cell is exposed to hypertonic solutions.
- E. Lysis occurs when a cell is exposed to an isotonic solution
14. The assisted transport of a molecule across the cell membrane without an expenditure of energy is known as ______.
- A. diffusion
- B. facilitated transport
- C. active transport
- D. osmosis
- E. None of the choices are correct.
15. The _______ is a stack of slightly curved saccules that are important in packaging and secretion.
- A. mitochondria
- B. vacuoles
- C. Golgi apparatus
- D. lysosomes
- E. Endoplasmic reticulum
16. Molecular biologists have determined that during protein synthesis that the messenger RNA exits the nucleus through small openings in the nuclear envelope. These openings are known as ____.
- A. nuclear pores
- B. nucleoli
- C. Golgi bodies
- D. lysosomes
- E. peroxisomes
17. Glycolysis occurs within the ___________ and the citric acid cycle and electron transport chain occur within the _____________.
- A. mitochondrion, cytoplasm
- B. mitochondrion, plasma membrane
- C. cytoplasm, mitochondrion
- D. cytoplasm, lysosome
- E. plasma membrane, cytoplasm
18. The formation of ______ bonds involves the transfer of electrons from one atom to another nearby atom. A. covalent
- B. ionic
- C. hydrogen
- D. polar
- E. all of the above
19. In an acidic solution:
- A. the number of H+ is less than the number of OH
- B. the number of OH- is greater than the number of H+
- C. the number of H+ is equal to the number of OH
- D. the number of H+ is greater than the number of OH
- E. none of the above.
20. Glucose breakdown leads to _________.
- A. DNA replication
- B. ATP buildup
- C. RNA synthesis
- D. ATP degradation
- E. ADP breakdown
