Ch 1- Human Biology

From the following, select only the general characteristics of life. - Respond to Stimuli - Reproduce - Grow and Develop - Consume food - Are Organized - Have an Evolutionary History - Move - Harvest Energy from the Sun - Maintain Homeostasis - Communicate - Breathe - Acquire Materials and Energy

- Respond to Stimuli - Reproduce - Grow and Develop - Are Organized - Have an Evolutionary History - Maintain Homeostasis - Acquire Materials and Energy

An important component of distinguishing science from pseudoscience is being able to distinguish that information is from a credible source. Select all of the following that are considered to be credible sources. - A blog from a website that is recommending that you purchase a product from them - Your college textbook, copyright 2019 - An opinion article in a popular newspaper - Peer-reviewed academic journals - Social media posts with no reference - Social media posts that reference blog posts -A website authored by the leading expert in that field of study - University sponsored website that includes references from peer-reviewed journal articles

- Your college textbook, copyright 2019 - Peer-reviewed academic journals -A website authored by the leading expert in that field of study - University sponsored website that includes references from peer-reviewed journal articles

Place the steps listed on the right in the order of the scientific method.

1) Make Observations 2) Formulate a Hypothesis 3) Design and Execute an Experiment 4) Collect and Interpret Data 5) Form Conclusions

Arrange these steps on the scientific method in the order that they would be performed. Start with the first step at the top. -Formation of hypothesis -New or previous observation -Conclusions that either support or do not support the hypothesis -Collection and analysis of data -Further experimentation or formation of a scientific theory

1) New or previous observation 2) Formation of hypothesis 3) Testing with observation and experiment 4) Collection and analysis of data 5) Conclusions that either support or do not support the hypothesis 6) Further experimentation or formation of a scientific theory

Fill in the blanks to form complete statements about the steps in the scientific process. Then, place the statements in the correct order to represent the general process of the scientific method. Answer choices may be used more than once.

1) On the basis of one or more observations of natural phenomena, a testable explanation called a hypothesis is formed. 2) A hypothesis is tested with observation and/or experiments. 3) Data, which results from experiments, either support or do not support the hypothesis. 4) The data help scientists to form conclusions, some of which may encourage them to redesign their experiments or formulate a new hypothesis.

The following descriptions are of various sources that are available for writing a scientific paper. Rank them in order from most to least reliable.

1) One of the leading academic journals within the field of biology 2) A university-sponsored website with references listed 3) A university-sponsored website without references listed 4) A friend's social media post that lacks a reference 5) A website that sells herbal supplements

Complete each of the following statements to describe the parts of the scientific method. Then, place the sentences in the correct order in which the scientific method tends to flow.

1)The scientific method begins with a(n) observation of a natural event. 2) Scientists use reasoning to combine observations into a tentative explanation, or hypothesis. 3) Scientists develop a good experimental design that contains both a test group in which the experimental variable is altered, and a control group in which the experimental variable is not altered. 4) Analysis of the data reveals how the manipulated variable, also known as the independent variable, affects the measured variable, the dependent variable. 5) The results of an experiment are called data and must be properly analyzed in order for a conclusion to be reached.

Once results are analyzed, the findings show that Group A experiences a 20% increase in growth, Group B experiences a 10% increase in growth, and Group C experiences no increase in growth. These results show that the new growth hormone had _____ _____ on growth and works _____ _____ the old growth hormone.

A Positive Effect; Better Than

A mutated strain jumped to humans in 1997?

Avian flu

Some organisms depend on _____ to maintain this constant internal environment. For example, lizards lounge on rocks in sunny locations to warm their bodies and seek shade to cool their bodies.

Behaviors

One subset of the group, Group C, receives no growth hormones of any kind. This group is called the _____ _____.

Control Group

While determining which antibiotics are best to treat ulcers caused by Helicobacter pylori, the drugs used in the experiment are called the: -Placebo -Dependent variable -Experimental variable control

Experimental variable

Investigators want to study the effects of a new growth hormone on mice. To do this, they select a population of mice that is _____ _____.

Genetically Identical

Global warming can occur when increasing levels of atmospheric carbon dioxide allow the sun's rays to pass through, but then absorb and radiate heat back to Earth. This is called the: -Solar magnification -Oven phenomenon -Radiant amplification -Greenhouse effect

Greenhouse effect

However, for these processes to continue, living things must maintain _____, or a constant internal environment.

Homeostasis

Contamination of large air conditioning system?

Legionnaire's disease

All living things require an outside source of materials and energy. The sum total of all chemical reactions that occur within a cell to provide these materials and energy is called _____.

Metabolism

Select components of biodiversity. -Number of species -Potential for human benefit from species -Genetic variability of species. -Reproduction rates of species -Relative abundance of species. -Ecosystems in which species live

Number of species, Genetic variability of species, Relative abundance of species, Ecosystems in which species live

Several types of tissues combine to make up a(n) _____; an organ _____ works together to accomplish a common purpose.

Organ; System

Other organisms rely on _____ _____ to maintain this constant internal environment. For example, penguins have extra layers of feathers and a layer of blubber to keep warm and dry in cold, snowy conditions. These are both examples of adaptations, or modifications that make organisms suited to their way of life.

Physical Modifications

The characteristic of life that involves the passage of genetic information to the next generation is: -Reproduction -Metabolism -Response to stimuli -Homeostasis

Reproduction

Human consumption of civet cats?

SARS

The following are characteristics of either science or pseudoscience. Classify each in their appropriate bin to describe the differences between the two. - Based on untestable hypotheses - Claims have been experimentally tested - Based on claims that have never been experimentally tested - Translates to "fake science" - Based on claims that are unsupported by scientific data -May include double-blind studies to eliminate bias in researchers -Based on claims that are supported by scientific data

Science: - Claims have been experimentally tested -May include double-blind studies to eliminate bias in researchers -Based on claims that are supported by scientific data Pseudoscience: - Based on untestable hypotheses - Based on claims that have never been experimentally tested - Translates to "fake science" - Based on claims that are unsupported by scientific data

The major reason that a placebo is used in studies involving some kind of medication is so: -Subjects in the test group will think they are receiving medication. -Different medications in the placebo can also be studied. -Subjects in the control group will know that they are not receiving any medication. -Subjects in the control group will think they are receiving medication.

Subjects in the control group will think they are receiving medication.

This includes maintaining a stable _____, moisture level, and acidity.

Temperature

One subset of the group, Group A, receives the newly developed growth hormone. This group is called a _____ _____.

Test Group

One subset of the group, Group B, receives an already proven growth hormone. This group is called a _____ _____.

Test Group

What classifies organisms as the same species? -Looking alike -The ability to interbreed -Being part of the same community -Living in a particular area

The ability to interbreed

In a typical graph designed to summarize the findings of a scientific experiment, the horizontal axis is also called the _____ axis, and the vertical axis is called the ____ axis. -x; y -q; r -y; x -y; z

x; y