biology 1 quiz
Which of the following might plausibly be said by a scientist?
There is always a possibility that a more advanced experiment might falsify any hypothesis.
you are conducting an experiment to determine what concentration of disinfectant is most effective in killing bacteria. In this example, the concentration of disinfectant would represent the
experimental variable
About 12 to 24 hours after the last meal, a person's blood sugar level normally varies from 60 to 90 milligrams per 100 milliliters of blood, although it may rise to 130 mg per 100 ml after meals high in carbohydrates. That the blood sugar level is maintained within a fairly narrow range, despite uneven intake of sugar, is due to the body's ability to carry out
homeostasis
When you are overheated, you perspire, and when you are too cold, you shiver to generate heat. Which property of life is best represented by this example?
homeostasis
A possible explanation for a natural event, based on observations and past knowledge, is a
hypothesis
educated guess
hypothesis
The type of logical thinking that uses related observations to arrive at a general conclusion is called
inductive reasoning
The bones in a bird are hollow, reducing its weight for flight. This is an example of which characteristic of life?
living things are adapted.
the body temperature in humans is maintained around 37°C. Which characteristic of life does this information represent?
living things are homeostatic.
Which level of biological organization is composed of several tissues?
organ
A physician specializes in surgery involving the following group of organs: mouth, esophagus, stomach, and intestines. Overall, what is the highest level of organization that this physician is specialized in?
organ system
A piece of petrified wood was once part of a living organism that has had its tissues replaced by minerals. Which property of life will still be present in the wood?
organization
All the banded sunfish ( Enneacanthus obesus) in a pond would comprise a(n)
population
Organs are composed of tissues, which are composed of cells. This is an example of which characteristic of life?
Living things have levels of hierarchical organization.
Which of the following statements is based on scientific observation and reasoning?
Objects fall downward anywhere on the earth's surface, regardless of the observer.
Which statement regarding the scientific method is false?
Original hypotheses are formed after an experiment.
Which statement about living organisms is not correct?
living organisms create energy
In the late 1800s, Louis Pasteur was searching for a vaccine for anthrax in livestock. One French veterinarian had a local reputation for being able to cure anthrax by applying oils and wrapping the animal in cloth to induce a fever. Pasteur also knew that some animals got well on their own when left untreated. Pasteur tested the effectiveness of the local veterinarian's methods by injecting four cattle with anthrax bacteria. He then directed the veterinarian to perform his procedures on two cattle. The other two cattle were left alone. What is the rationale for Pasteur's experimental design?
Two cattle represent a test of the treatment; two serve as a control to determine the likelihood of survival without treatment.
Ever since the antibiotic drug penicillin was discovered in 1928, the incidence of resistant bacteria has steadily increased as a direct result of
natural selection
Which statement regarding the scientific method is false?
theories formed in everyday life carry the same validity as a scientific theory.
Which statement regarding applied science (= technology) is false?
Applied science is a basis for all ethical or moral decisions.
Which domains contain organisms that lack a membrane-bound nucleus?
Archaea and bacteria
The type of logical thinking that uses related observations to arrive at a general conclusion is called ___.
Inductive Reasoning.
Nutrient molecules are used to build cellular structures or for energy. This best represents which characteristic of life?
Living things acquire materials and energy from the environment
statement concerning reproduction is false?
The offspring of multicellular organisms tend to be identical to the parent.
Which of the following is a potential consequence if people stop using applied science in the agriculture industry?
There could be a significant decrease in the amount of food produced.
You are conducting an experiment to determine which brand of fertilizer results in the greatest amount of fruit production by tomato plants. In this example, the response variable would be the
amount of fruit produced by the tomato plants.
A fox belongs to the kingdom ___.
animalia
Which sequence correctly lists the different levels of biological organization, from the smallest and simplest to the largest and most complex?
cells-tissues-organs-organ systems-organisms
domain that contain organisms that are adapted to life in harsh environments
domain Archaea
Which of the following is one of the domains of life?
domain eukarya
a community of organisms along with their physical environment constitutes an
ecosystem