Human Biology Study guides, Class notes & Summaries

organisms levels of organization - Answer atoms, molecules, cells, tissues, organs, organ systems, organisms, populations, community, ecosystem and biosphere. organisms - Answer take materials and energy from the environment reproduce grow and develop are homeostatic respond to stimuli have an evolutionary history and are adapted to a way of life Humans differ from other mammals by their,... - Answer highly developed brains completely upright stance creative language abili...

Chapter 1 - Answer -- The scientific study of life is called - Answer A. biology the science of ~biology~ is the study of living organisms and their environment (page 2) A complex individual that consists of organ systems is known as a - Answer C. Organism An individual; complex individuals contain organ systems (page 3) All of the ecosystems on the planet together are called the - Answer C. Biosphere All Earth's ecosystems collectively make up the ~biosphere~ (page 2)...

Tight junction - Answer junction which hold cells tightly together to prevent leaking; found in the urinary & digestive tract Adhesion junction - Answer junction where cells are not actually touching, but rather held together by intercellular filaments; found in the skin and heart muscle (allows flexibility) Gap junction - Answer connect cytoplasm of adjacent cells, only allow certain small molecules through; found in smooth muscle & heart (helps synchronize electricital activity) ...

A blind experiment is one in which _____ - Answer subjects do not know if they are in the experimental or control group Which represents the highest level of biological organization? - Answer biosphere One characteristic of life is that living things are composed of _____. - Answer cells. Scientists believe a drug can improve memory in the elderly. Five hundred patients are divided into two groups. All patients are over 80, male, in good health, with severe memory loss. Only one g...

Characteristics of Life - Answer Different than nonliving things; Require energy (ATP); Composed of cells; Homeostasis; Respond to external environment; Grow; Reproduce; Population evolves Hypothesis - Answer A message expressing an opinion based on incomplete evidence Scientific Method - Answer The process of science; 1)Observe and Generalize 2) Formulate Hypothesis 3)Make Testable prediction 4)experiment or observe 5)Modify and report Homeostasis - Answer The ma...

Homeostasis - Answer State of body equilibrium characterized by a relatively constant and stable internal environment Enzymes - Answer - Facilitate biochemical reactions - are proteins -function as biological catalysts -speed up chemical reactions -are not altered or consumed by reaction -without enzymes, many biochemical reactions wouldn't proceed quickly enough to sustain life Lipids - Answer -Insoluble in water 3 important classes -Triglycerides - Energy storage...

biology - Answer is the study of life what is life? - Answer 1. living things contain nucleic acid, protiens, carbohydrates, and lipds 2. living things are composed of cells 3. Living things grow and reproduce 4. Living things use energy and raw materials 5. Respond to their environment 6. maintains homeostasis 7. adaptive traits what are humans made of? - Answer 1. molecules 2. Cell 3. Tissue 4. Organ 5. organ systems 6. individual 7. population Where do humans fi...

What is keratinisation? - Answer 'Waterproofing' of skin in the epidermis. What is the outermost layer of the epidermis called? - Answer The stratum corneum What is the layer of the epidermis that is only found in thick skin (i.e. palms of hands and soles of feet) called? - Answer The stratum lucideum In which layer of the epidermis does keratinisation occur? - Answer The stratum granulosum What is the innermost layer of the epidermis called? - Answer The stratum bas...

Biology -Answer The study of life. Nucleic acid, proteins, carbs, and lipids. -Answer Living things contain: Cells -Answer Living things are composed of: Molecule -Answer the chemical components of cells Cells -Answer the smallest unit of life Tissue -Answer a group of similar cells that perform the same function Organ -Answer a structure with two or more tissues working together to perform a function Organ Systems -Answer at least two organs working ...

Biology -Answer The study of life. Nucleic acid, proteins, carbs, and lipids. -Answer Living things contain: Cells -Answer Living things are composed of: Molecule -Answer the chemical components of cells Cells -Answer the smallest unit of life Tissue -Answer a group of similar cells that perform the same function Organ -Answer a structure with two or more tissues working together to perform a function Organ Systems -Answer at least two organs working ...