Unit 2- Matter
Which of these determines the identity of an element?
A. number of electrons
B. the number of protons
C. number of energy levels
D. number of neutrons
B : the number of protons
Which of the following is a nonrenewable energy resource?
A. coal
B. wood
C. wind
D. biomass
A: coal
An event in which a disease spreads to many regions of the world is called
A. an epidemic
B. an outbreak
C. a pandemic
D. a pathogen
C: pandemic
Which process uses a body cell to create a new organism?
A. crossbreeding
B. cloning
C. genetic modification
D. gene splicing
B cloning
Which process uses a body cell to create a new organism?
A. crossbreeding
B. cloning
C. genetic modification
D. gene splicing
B: cloning
What is formed when two or more elements are chemically combined?
A. atom
B. composite
C. compound
D. mixture
C: compound
Why is the use of geothermal energy limited?
A. It can be used only in areas that have volcanic activity, and these areas are limited.
B. It can be used only in areas that receive a great deal of sunlight, and these areas are limited.
C. It destroys habitats so it cannot be used in areas where there is a lot of wildlife.
D. It pollutes the water, so it cannot be used in areas where people live.
A: It can be used only in areas that have volcanic activity, and these areas are limited
A vaccine is made from
A. proteins produced by the body’s immune system
B. a weakened or dead form of a pathogen
C. body cells that are immune to a disease
D. an antibiotic used to treat an infectious disease
B
B: a weakened or dead for of a pathogen
Which of these is a concern about the use of Biotechnology?
A. increased crop yield
B. development of new vaccines
C. increased job opportunities
D. creation of new pathogens
D. Creation of new pathogens
A DNA fingerprint is
A. a unique sequence of repeating units in a
section of DNA.
B. a gene inserted into a bacterial chromosome
C. the complete sequence of an organism’s
DNA
D. a copy of chromosome
A: a unique of repeating units in a section of DNA
The nucleus of an atom contains
A. only neutrons
B. protons and electrons
C. protons and neutrons
D. only electrons
C: protons and neutrons
Which would least likely have an impact on global climate changes?
A. producing energy using oil
B. producing energy using coal
C. producing energy using hydroelectric plants
D. producing energy using natural gas
C: producing energy using hydroelectric plants
Why do doctors suggest that people get a flu vaccine each year?
A. Viruses replicate more rapidly over time.
B. Viruses can mutate from year to year.
C. Vaccines are absorbed by the body after a year.
D. Vaccines get stronger over time.
B: viruses can mutate from year to year
In 1918, an outbreak of influenza infected 500,000 people all over the world. Ten of millions of those infected died. In 1994, an outbreak of pneumonic plague spread quickly.Through the city of Surat in India, killing 52 people. Which statement BEST describes the two events?
A. Both outbreaks were pandemics.
B. Both outbreaks were epidemics.
C. The influenza outbreak was pandemic. The plague outbreak was an epidemic.
D. The influenza outbreak was epidemic. The plague outbreak was an pandemic.
C: the influenza outbreak was pandemic. the plague outbreak was an epidemic
Genetic engineering has directly increased productivity in which U.S industry?
A. agriculture
B. astronomy
C. automobile
D. media
A: agriculture
How are the elements in the modern periodic
table arranged
A. alphabetical order
B. by atomic mass
C. by date discovery
D. by number of protons
D: by number of protons
Which of the following statement is false?
A. Solar energy is an example of renewable energy.
B. Hydropower is the energy of moving water.
C. Biomass is any material from living things that can be used as an energy source.
D. Geothermal energy means conservation of energy
D: Geothermal energy means conservation of enegry
Ten people became sick with the flu after attending a school dance. What is the scenario that could best explain how the people got sick?
A. contact with environmental sources
B. contact with an infected animal
C. contact with a contaminated object
D. contact with an infected person
D: contact with the infected person
Although antibiotics are useful in the control of bacteria, which best describes the disadvantage of their overuse?
A. The overuse of antibiotics could lead to the pollution of water resources.
B. The overuse of antibiotics could lead to resistant strains of bacteria.
C. The overuse of antibiotics could lead to the spread of mutated diseases.
D. The overuse of antibiotics could lead to weakened immune systems in humans.
B: the overuse of antibiotics could lead to the resistant strains of bacteria
What is involved in creating genetically modified bacteria?
A. allowing them to reproduce freely
B. changing their food source
C. using biotechnology techniques
D. growing them on selected plants
C:Using biotechnolgy techniques
Elements are described as pure substances because
A. they are found in nature.
B.they cannot be separated into parts by physical means.
C. they have no charge.
D. they can be produced in a laboratory.
B: they cannot be separated into parts by physical mean
Which problem is most likely to result from the use of nuclear power?
A. pollutants in the groundwater after drilling
B. storage of radioactive wastes
C. miners getting trapped underground
D. oil spills that pollute oceans and beaches
B: storage of radioactive waste
A patient comes into a clinic sneezing and coughing, with a runny nose and fever. Which would be the most likely diagnosis?
A. malaria
B. spotted fever
C. food poisoning
D. the common cold
D: the common cold
Which best explains the significance of an infectious disease?
A. It can be passed from one person to another.
B. It cannot be passed from one person to another.
C. It will respond effectively to antibiotics in 7 days.
D. It will not respond effectively to antibiotics in 7 days.
A: It can be passed from one person to another
Which is the most useful change made to crops using applications of biotechnology?
A. Crops use more nutrients.
B. Crops need more fertilizers.
C. Crops resist more diseases.
D. Crops take more time to grow.
C: crps resist more diesases