BIO1300 The Human Animal Professor Adam Oliver Brown PRACTICE Midterm 1 February 15, 2018

Transcription

1 BIO1300 The Human Animal Professor Adam Oliver Brown PRACTICE Midterm 1 February 15, 2018 INSTRUCTIONS: - This is a closed book exam - write your name and student # at the top of EACH page - check that your exam is complete, there are 6 pages in all - think carefully and answer the questions thoughtfully, drawing upon the information and using the terminology that you have learned in this course - use complete sentences, not diagrams or equations - this exam will last for 80 min. - Good Luck! Definitions /10 Fill in the blanks /30 Short Answer /10 Total /50 1

2 Part I Definitions (2 points each): briefly but completely describe, define or explain the following terms as they relate to the field of human evolution 1 Radiometric dating 2 Pangea 3 Homo floresiensis 4 Greenhouse effect 5 Folate/Folic Acid 2

3 Part II Fill in the blanks (1 point each): provide the word(s) or term(s) that best match(es) the following descriptions. 1) Evolution acts on heritable traits that vary among in a population. 2) The name of the patterns of distribution of different kinds of organisms in different places around the world 3) The dramatic event that triggered the demise of the dinosaurs approximately 65 million years ago. 4) The name of the process by which humans influence evolution by purposely selecting some animals or plants to survive and/or reproduce because of the traits that they have. 5) The name of the evolutionary process wherein a population is reduced in size due to random factors. 6) A biological species is a population of individuals that are capable of interbreeding and that can produce viable and _ offspring. 7) The name of the Family of apes that includes humans 8) The name of the process by which primates swing in trees using their arms. 9) The name of the Hominin that was the direct ancestor for the first humans. 3

4 10) The name of the humans that were thought to be the direct ancestor of modern Homo sapiens. 11) The name given to the type of toolkit used by Homo ergaster, which was composed of axes, chipped knives and blades. 12) The name of the projectile-launching device that was invented by indigenous North Americans, which acts to increase the accuracy and speed of a thrown spear. 13) The name of the protein that is involved in the production of most skin extensions among tetrapod vertebrates. 14) The name of the kind of mammal gland that produces a thick oil. 15) The name of the upper layer of the dermis that is shaped as finger-like projections into the epidermis above, causing ridges in the skin. 16) The name of the type of melanin that gives red colour to skin and hair. 17) The name of the growth phase in the lifecycle of a hair follicle. 18) The name for the center of a hair follicle. 19) The name for the half-moon shape under our fingernails that shows the nailgrowing region underneath. 4

5 20) Animals of different sizes have different constraints on heat conservation/dissipation because of changes to the ratio. 21) This is the most temperature sensitive organ in the body of mammals _ 22) The difference in size of brains between an Australopithecine and a modern human is about times. 23) One role of axillary (armpit, genital) hair is said to be for the dispersion of 24) The production of skin colour is polygenic and its effects are based on a combination of alleles. 25) Melanin is produced into these packages 26) The name of the genetic skin condition that leads to a complete lack of melanin production 27) The name of the age-related skin condition involving patches of melanin production in sun-exposed areas 28) Cholecalciferol is produced by human skin when exposed to _ 29) The name of the region of earth s atmosphere where the ozone layer is found. 30) This is the deadliest form of skin cancer. 5

6 Part III Short Answer: (5 points each) briefly and concisely discuss the following concepts as they relate to this course. 1 - Describe the layers of human epidermis and explain the function of each one. 2 - Explain the mechanism of how chlorofluorocarbons (CFCs) lead to the destruction of the ozone layer. 6