Essay on BIO 141 Exam 1 Study Questions

17. Explain what is meant by a scientific theory by giving the three ways your text separates a theory from a

B. The nature of plasma membrane. If the membrane is composed of lipid portion., only lipid soluble molecules can pass through while water molecules cannot.

Biomolecules are present in every living organism. Larger biomolecules (macromolecules) consists of proteins, lipids, and carbohydrates. In layman’s terms, proteins are long chains of amino acids that have many functions such as, providing structural support and regulating many body processes. Lipids are the scientific term used for fats. There are many different types of fats, but they all share one common characteristic: They are not soluble in water. Lipids provide protection and insulation to organs and also act as an energy source. Carbohydrates are made up of carbon, hydrogen,

So, somebody can make a certain observation and come up with a hypothesis about how and why a phenomenon occurs the way it is. Hypothesis could be

c)Lipids monomer(s) are called fatty acid and glycerol. The functional group is called ester. The linkage type of lipids is non polar bonds or sometimes called ester bonds. The primary function of lipids is energy, hormone production and insulation of the body.

1. The social structure and behavior of chimps in their communities or troops suggest many questions. What research questions might Dr. Hahn and her associates ask?

Then, nucleic acids are made up of nucleotides and has the ability to make new cells. Finally, Lipids. Lipids are made up of glycerol and fatty acids. Lipids play a big role in the body, it provides cushion and insulation for the larger organisms in our bodies. All of these macromolecules and monomers are needed to make energy.

(TCO 5) ________ are the major form of fat in both food and the body.

Hypotheses are often taken from a form of an if-then statement (Scott 2009) -- usually based on previous experience, scientific background, observation, and logic. While a scientific theory explains laws and facts (Scott 2009). Clearly, this is a contradiction. A hypothesis cannot be considered as a scientific theory since it is based on conditions that simply lacks a strong foundation to become a theory unless it’s proven to be concise otherwise.

The Neck of the giraffe is adapted to be able to reach the leaves in tall trees. This trait developed as a result of Natural selection. There is some debate as to why this trait developed. The more commonly known reason would be their necks adapted to reach the leaves in the tall branches. Another factor that could have played a role in their necks development is the mating process(Simmons 2010). Giraffes use their necks for mating and club each other with their heads to compete for females. This could explain how the trait was passed down(Simmons 2010). If a longer neck aids in being more dominant in this mating ritual this would support the mating process hypothesis. There is unfortunately not agreement on which one of these hypotheses is correct but we can analyze.

17. An educated guess in a psychological experiment that states if a certain thing happens, then it will cause a certain response: this describes the hypothesis of the experiment.

It is worth noting immediately that based on the above results, Hunt’s 1992 terminal branch feeding hypothesis does indeed hold for a suspensory, frugivorous, fission-fusion New World primate, Ateles geoffroyi. With a significance level of p < 0.001 for three of the four variable analyses (positional terminal vs. non: p = 0.0352), it can be safely speculated that behaviors, both positional and postural, vary significantly between terminal and non-terminal branches; this idea holds as well for small/medium and large/very large weight-bearing structures. Additionally, the predicted association of suspensory modes with small or medium weight-bearing structures was confirmed (p < 0.0001).

d) Makes the membrane less flexible, allowing it to sustain greater pressure from within the cell

A hypothesis is an idea about how things work. A hypothesis is an explanation for one or more observation. A hypothesis is formed from the knowledge of how a body and other biological systems work. A hypothesis must be testable, you must be able to evaluate a hypothesis through observation of the measurable universe. It must also falsifiable, meaning you could potentially prove it false. A scientific theory is the explanation for a set of related observations based on well-supported hypothesis. This formed from several different lines of research. In everyday language, the word theory means untested ideas based on little information. Scientist uses the term to refer to a well-supported idea of how the natural world works.

Carbohydrates are the body’s primary source of energy. Without adequate carbohydrates, a person may feel fatigued and weak, as the body looks elsewhere for sources of energy. A severe lack of carbohydrates can deprive critical bodily organs the necessary energy to properly function. Lipids are naturally occurring organic compounds that include fats and oils. An excess of some lipids can increase the chances of certain health problems, lipids are vital nutrients to a healthy body. Lipids are necessary for the absorption of fat soluble vitamins. A diet too low on lipids lowers the level of good cholesterol, decreases the body’s energy level and can disturb the body’s formation of cells and cell functions.