FREE BIOLOGY AND STUDY GAMES ABOUT BIOLOGY

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FREE BIOLOGY AND STUDY GAMES ABOUT BIOLOGY

VOCABULARY EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -109 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: Endocytosis

Answer:

The process by which a cell membrane surrounds a particle and encloses the particle in a vesicle to bring the particle into the cell.

Question 2: Homeostasis

Answer:

The maintenance of a stable internal environment.

Question 3: Carbon Dioxide Fixation

Answer:

The synthesis of organic compounds from carbon dioxide, such as in photosynthesis.

Question 4: Cell Wall

Answer:

A rigid structure that surrounds the cell membrane and provides support to the cell.

Question 5: NADPH

Answer:

An electron carrier that provides the high-energy electrons needed to make carbon-hydrogen bonds in the third stage of photosynthesis.

Question 6: Facilitated Diffusion

Answer:

The transport of substances through a cell membrane along a concentration gradient with the aid of carrier proteins.

Question 7: Resolution

Answer:

In microscopes, the ability to form images with fine detail.

Question 8: Cystic Fibrosis

Answer:

A fatal disorder in which a thick, sticky mucus clogs passages in many of the body's organs.

Question 9: Krebs Cycle

Answer:

A series of biochemical reactions that convert pyruvic acid into carbon dioxide and water; it is the major pathway of oxidation in animal, bacterial and plant cells and it releases energy.

Question 10: Prokaryote

Answer:

An organism that consists of a single cell that does not have a nucleus or cell organelles; an example is bacterium.

Question 11: Experiment

Answer:

A planned procedure to test a hypothesis.

Question 12: Scanning Tunneling Microscope

Answer:

A microscope that uses a needle-like probe to measure differences in voltage caused by electrons that leak, or tunnel, from the surgace of the object being viewed.

Question 13: Lysosome

Answer:

A cell organelle that contains digestive enzymes.

Question 14: Solution

Answer:

Homogeneous mixture of two or more substances uniformly dispersed throughout a single phase.

Question 15: Nucleic Acid

Answer:

An organix compound, either RNA or DNA, whose molecules are made up of one or two chains of nucleotides and carry genetic information.

Question 16: Endoplasmic Reticulum

Answer:

A system of membranses that is found in a cell's cytoplasm and that assists in the production, processing, and transport of proteins and in the production of lipids.

Question 17: Electron Microscope

Answer:

A microscope that fouses a beam of electrons to magnify objects.

Question 18: Flagellum

Answer:

A long, hairlike structure that grows out of a cell and enables the cell to move.

Question 19: Energy

Answer:

the capacity to do work.

Question 20: Atom

Answer:

The smallest unit of an element that maintains the properties of that element.

Question 21: Cellular Respiration

Answer:

The process by which cells produce energy from carbohydrates; atmospheric oxygen combines with glucose to form water and carbon dioxide.

Question 22: Golgi Apparatus

Answer:

Cell organelle that helps make and package materials to be transported out of the cell.

Question 23: Chlorophyll

Answer:

A green pigment that is present in most plant cells, that gives plants their characteistic green color, and that reacts with sunlight, carbon dioxide and water to form carbohydrates.

Question 24: Equilibrium

Answer:

In chemistry, the state in which a chemical reaction and the reverse chemical reaction occur at the same rate such that the concentrations of reactancts and products do not change.

Question 25: Exocytosis

Answer:

The process by which a substance is released from the cell through a vesivle that transports the cell through a vesicle that transports the substance to the cell surface and then fuses with the membrane to let the substance out.

Question 26: Molecule

Answer:

The smallest unit of a substance that keeps all of the physical and chemical properties of that substance; it can consist of one atom or two or more atoms bonded together.

Question 27: Cytoplasm

Answer:

The region of the cell within the membrane that includes the fluid, the cytoskeleton, and all of the organelles except the nucleus.