HUMAN BIOLOGY

Human Biology



Human Biology

1) Levels of biological organization

Scientific levels of biological organization, from the lowest to the highest level are as illustrated below:

a) The atom which is basic unit of matter; b.) The molecule is a science structure with combination of two or more atoms; c.) The organelle, this is the subunit of a cell with some exceptional scientific function that can be found in the cytoplasm; d.) Cell which the smallest unit of protoplasm, generally with a nucleus cytoplasm. Plants and animals are made up of one or more cells; e.) Tissue is a substance of an organic body having a specific purpose; f.) The organ which is made of group of tissue; g.) The organ system which is the group of functioning tissues; h.) The organism - this is any plant or animal that have organs and parts employed together in maintaining life; h.) The population or the so called species which is the grouping of organisms;

2)

The level which is most accountable for the maintenance of homeostasis comprises salt and ion levels in the blood, regulation of blood pH, and excretion of urea and other wastes.

3) Process of Science:

A) Cows may or may not eat grass is an example of deductive reasoning.

B) 'All cows eat grass' is an example of inductive reasoning

C) The hypothesis of dinking ginger tea for nausea due to morning sickness, hangover or pregnancy also drives away a general feeling of discomfort.

D) If I perform a hypothesis test, ginger acts on the digestive tract, it neutralizes the acid level in our stomach, thereby curing nausea.

4)

A)

The relative atomic mass of oxygen is 16, the atomic number of oxygen is 8; this has 8 protons and 8 neutrons and 8 electrons.

B) Difference between a molecule that is a compound and a molecule that is not a compound? Give one example of each.

A molecule is created when two or more atoms bond together chemically. A compound is a molecule that contains at least two dissimilar elements. All compounds are molecules but not all molecules are compounds. For e.g Methane (CH4) is a compound because each is prepared from more than one element and Nitrogen (N2) are not compounds because each is poised of a single element.

5)

A) The four kinds of macromolecules such as carbohydrates, lipids, proteins and nucleic acids. The Lipid store energy, but because it is water-insoluble, an organism can employ lipids to store energy in dissimilar ways than it can carbohydrates. Due to this cause, it is most likely affected by high temperatures.

B) The Lipid is a class of macromolecule . It store energy, but they are water-insoluble, an organism can use lipids to store energy in dissimilar ways than it can carbohydrates. Though lipids can have diverse structures, they are all made up of fatty acids, which are chains of 10 to 20 carbon atoms. A phospholipid is a particular kind of lipid that makes up cell membranes in our bodies.

6) Is Bill correct that we gain nothing from eating ...