Biology Final Review1: Question Preview (ID: 2181)

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A student wearing goggles, gloves, and an apron begins a simple activity to determine the pH of corrosive solutions. Before the activity begins, what other safety measure should the student follow?
a) Identify the locations of eye wash, shower, and fire equipment
b) Check and set clocks and record the beginning time
c) Review the proper method of fire-polishing glass tubing
d) Arrange the equipment in the work area alphabetically

Which of these is the best reason to not eat or drink while in the laboratory?
a) Particles of food can contaminate chemical reagents.
b) Spilled drinks can make cleanup of chemicals difficult.
c) Some foods produce toxic gases when mixed with acids.
d) Chemicals spilled on hands can be transferred to food.

The reason for wafting or fanning a small amount of chemical vapors toward the nose as a means to detect odors in a test tube is to-
a) avoid experimental error from excessive loss of mass of reactants or products
b) avoid splashing chemicals into the face of any person
c) protect the respiratory tract against potentially harmful vapors
d) determine the relative strength of the odor before smelling directly

Which of these is a hypothesis that can be tested through experimentation?
a) Bacterial growth increases exponentially as temperature increases.
b) A fish’s ability to taste food is affected by the clarity of aquarium water.
c) Tadpoles’ fear of carnivorous insect larvae increases as the tadpoles age.
d) The number of times a dog wags its tail indicates how content the dog is.

Which of the following organelles is involved in storing material in a plant cell?
a) Vacuole
b) Mitochondrion
c) Golgi body
d) Cell membrane

During photosynthesis hydrogen combines with carbon dioxide to make-
a) cholesterol
b) protein
c) glucose
d) cellulose

Which of the following describes viruses?
a) Viruses avoid antibiotics in humans.
b) Viruses exist as single cells or groups of cells.
c) Viruses require a living host in order to reproduce.
d) Viruses have plasma membranes and capsids

People infected with the human immunodeficiency virus (HIV) have an increased risk of dying from secondary infections. Which of these best explains how HIV increases the danger of secondary infections?
a) HIV produces antigens that damage red blood cells.
b) HIV adds genetic material from harmful microbes.
c) HIV destroys helper T cells (white blood cells).
d) HIV consumes beneficial microbes in the body.

One characteristic shared by a virus and a living cell is that both-
a) store genetic information in nucleic acids
b) have a crystalline structure
c) gain energy directly from the sun
d) use glucose for respiration

Bacteria are present in the digestive tract of some herbivores. The bacteria break down plant cellulose, making it possible for the herbivore to digest plant material. These bacteria live in a stable environment with sufficient food and water. The he
a) benefit each other
b) compete for survival
c) are producers
d) are secondary consumers

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