Bio 211 exam questions - Study guides, Class notes & Summaries

Which virus lineage is most diverse (i.e. contains the largest number of putative species or strains)? a) Positive-sense, single-stranded RNA viruses b) Double-stranded DNA viruses c) Double-stranded RNA viruses d) Negative-sense, single-stranded RNA viruses c) Double-stranded RNA viruses Which of the following flower structures are considered female? a) Stamen b) Style c) filament d) anther e) Ovary f) Stigma g) sepal b) Style e) Ovary f) Stigma Which of the following is one of the two most...

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 ...

________ are examples of prokaryotes because prokaryotes have a _________ which Eukaryotes do not A)Bacteria; nucleoid B) Archeae; mitochondria C) Bacteria; plasma membrane D) Fungi; plasmid E) Plantae; chromatin A Which of the following label the mitochondria and the golgi apparatus, respectively? A) 4 and 1 B) 2 and 4 C) 3and 2 D) 2 and 5 E) 3 and 5 C major site of ATP production, so it is the organelle responsible for aerobic respiration in eukaryotes mitochondria organelle active in modif...

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...

All of the following are part of a prokaryotic cell except A. DNA. B. a cell wall. C. a plasma membrane. D. ribosomes. E. an endoplasmic reticulum. E. Endoplasmic Reticulum Which of the following comparisons between prokaryotic and eukaryotic cells is incorrect? A. The lack of organelles in prokaryotes means that they are structurally less complex than eukaryotes. B. The lack of internal membranes means that prokaryotes cannot compartmentalize function to the same extent as eukaryotes. C. All m...

Pathway of blood as it flows through spleen Splenic artery Central artery Sinusoids Venules Splenic vein desmosomes vs. gap junctions Desmosomes mechanically join cells Gap junctions electrically join cells Bicarbonate formula CO2 + H2O <-> H2CO3 <-> H+ + HCO3- End Systolic Volume (ESV) Amount of blood remaining in each ventricle at the end of systole (contraction). ESV= EDV-SV Spread of Action Potential in Heart SA Node AV Node AV Bundle Bundle Branches Purkinje Fibers initiate...

Mitosis (5) genetically identical daughter cells (somatic cells) - growth - replace lost cells due to normal wear and tear - wound repair - asexual reproduction Cytokinesis division of cytoplasm Meiosis (2) daughter cells with half of genetic material (gametes) -Nuclear division Chromosomes (4) - DNA wrapped around histone proteins - DNA contains genetic information - gene (section of DNA) - shape and structure varies during cell cycle Chromatid half of the replicated, condensed chromosome ...

The precise location of a gene on a chromosome is known as its _____. a. loci b. trait c. sequence d. character a. loci A human cell contains 22 pars of autosomes, one X chromosome, and one Y chromise is a(n) _____. a. egg cell b. sperm cell c. male somatic cell d. femaile somatic cell c. male somatic cell The frequency with which crossing over occurs between any two linked genes is _____. a. the same as if they were not linked b. different between males and females c. determinded by their rel...

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...