Bio 211 exam 1 Study guides, Class notes & Summaries

Characteristics of Life Answer> Living things: -are organized -need energy and materials -maintain homeostasis -respond to stimuli (changes in environment) -reproduce and grow -have adaptations matter Answer> Anything that has mass and takes up space element Answer> A substance that cannot be broken down into substances with different properties atomic number Answer> =number of protons atomic mass Answer> =protons (which are = to electrons) + neutrons mass number...

Feedback mechanisms - Negative feedback=Stimulus invoking a response and the response inhibiting stimulus. Positive feedback=the stimulus invoking a response and the response providing a stimulus. IE. platelets increase, cells dividing. Kingdoms - Bacteria, Archaea bacteria, (both have organisms that are unicellular-comprised of prokaryotic cells-no nucleus). Archaea bacteria - exist extreme (high pH, low pH-Dead Sea). Protista (Eukaryotic cells-membrane bound nucleus), -looking to divide t...

Characteristics of Life - Living things: -are organized -need energy and materials -maintain homeostasis -respond to stimuli (changes in environment) -reproduce and grow -have adaptations matter - Anything that has mass and takes up space element - A substance that cannot be broken down into substances with different properties atomic number - =number of protons atomic mass - =protons (which are = to electrons) + neutrons mass number - equal to the sum of the number of proto...

Feedback mechanisms Answer> Negative feedback=Stimulus invoking a response and the response inhibiting stimulus. Positive feedback=the stimulus invoking a response and the response providing a stimulus. IE. platelets increase, cells dividing. Kingdoms Answer> Bacteria, Archaea bacteria, (both have organisms that are unicellularcomprised of prokaryotic cells-no nucleus). Archaea bacteria - exist extreme (high pH, low pH-Dead Sea). Protista (Eukaryotic cells-membrane bound nucleus)...

The most common isotope of carbon contains a nucleus with 6 protons and 6 neutrons. Suppose you have a beaker containing 6 grams of pure carbon. Approximately how many moles of carbon are present in the beaker? Eukaryotic cells move when their flagella or cilia bend. How does the bending of these structures occur? A) The Golgi apparatus transports numerous vesicles to these structures, making them bulge. B) Actin filaments are bound by the motor protein myosin. C) The motor protein dynein chan...

Why don't hormones affect all cells they contact? Hormones can only affect cells that display receptors that are specific to them What is a target cell? Are the cells that display the specific receptor What are the 2 major classes of hormones (endocrine, not paracrine)? Where Peptide and steroid hormone What is a peptide hormone and where can it be found? Proteins (Polar, hydrophilic, lipophobic). Bind to cell surface receptor (on the cell surface, duh) and require 2nd Messengers inside the ...

In Pasteur's swan-neck flask experiment, the importance of the S-shaped curves in the flasks was twofold. The curves allowed entry of air but excluded: A. heat B. nutrients C. airborne bacteria D. viruses E. oxygen C. airborne bacteria Pasteurization was first developed to kill __________ in wine. A. spoilage bacteria B. antibiotic-producing bacteria C. all bacteria D. disease-causing bacteria E. probiotic bacteria A. spoilage bacteria All living organisms can be classified into three domai...

Final Exam BIO 211 - Q & A (Complete Solutions) Lymph capillaries called lacteals are located in the small intestine Lymphatics resemble veins except that lymphatics: all of the above are correct; Have thinner walls, Contain more valves, Contain lymph nodes located at certain intervals along their course Which of the following is not a lymph organ? A) pancreas B) spleen C) Peyer's patches of the intestine D) tonsils Lymph ducts empty into the circulatory system, draining into the: subclavian ...

Feedback mechanisms Negative feedback=Stimulus invoking a response and the response inhibiting stimulus. Positive feedback=the stimulus invoking a response and the response providing a stimulus. IE. platelets increase, cells dividing. Kingdoms Bacteria, Archaea bacteria, (both have organisms that are unicellular-comprised of prokaryotic cells-no nucleus). Archaea bacteria - exist extreme (high pH, low pH-Dead Sea). Protista (Eukaryotic cells-membrane bound nucleus), -looking to divide this by p...

BIO 211- Exam 1 Questions With Correct Answers. Scientific theories are just "ideas" (T/F) - answerfalse What is NOT considered a quality within the definition of life? Living things evolve Living things can grow and develop Living things are sentient Living things use energy - answerLiving things are sentient In some cases an observational study is more appropriate than an experiment. (T/F) - answerTrue The oldest fossils humans have discovered are from organisms called________. - ...