1994 AP Biology SECTION I Time – 1 hour and 30 minutes Directions: Each of the questions or incomplete statements below is followed by five suggested answers or completions. Select the one that is best in each case and then fill in the corresponding oval on the answer sheet. 1. Which of the following is the most abundant carbon-containing compound in the atmosphere of the Earth? (A) Carbon monoxide (B) Carbon dioxide (C) Carbon tetrachloride (D) Ethane (E) Ozone 2. During hibernation
Premium Organism Metabolism Oxygen
like a rubber band which keeps the opening of the bladder so that urine can pass down through the urethra urethra‚ tube that allows urine exits the body. 4. Discuss your dissection of the components of the endocrine system of the fetal pig by doing the following: a. Describe the endocrine organs that are located in the throat region (e.g.‚ function and appearance). Thyroid - small dark brown‚ pink gland in the trachea. Its function is to regulate metabolism and secrete hormones.
Premium Endocrine system Thyroid Hypothalamus
1. Phospholipid: Molecule that forms a double-layered cell membrane; consists of a glycerol‚ a phosphate group; and two fatty acids. 2. Selectively permeable (Semi): Condition or quality of allowing some‚ but not all‚ materials cross a barrier or membrane. 3. Receptor: Protein that detects a signal molecule and performs an action in response. 4. Diffusion: Movement of dissolved molecules in a fluid or gas from a region of higher concentration to a region of lower concentration. 5. Osmosis: Diffusion
Free DNA Protein Cell
Campbell’s AP Biology Notes Chapter 48: Nervous Systems Command and Control Center * The human brain contains an estimated 100 billion nerve cells‚ or neurons * Each neuron my communicate with thousands of other neurons * Functional magnetic resonance imaging (fMRI) is a technology that can reconstruct a 3-D map of brain activity * The results of brain imaging and other research methods reveal that groups of neurons function in specialized circuits dedicated to different tasks
Premium Brain Nervous system Central nervous system
Sept 27‚ 2010 Chapter 4 * With four valence electrons‚ carbon can form four covalent bonds with a variety of atoms * This tetra valence makes large‚ complex molecules possible * Fundamental groups: Alkanes and Alkenes * The electron configuration of carbon gives it covalent compatibility with many different elements * The valences of carbon and its most frequent partners (hydrogen‚ oxygen‚ and nitrogen) are the “building code” that governs the architecture of living
Premium Protein Meiosis Chromosome
Week 13 Review Biomes 1. What is a biome? a. Large area of similarly adapted species 2. How are plants similar and different in the biome of two different locations? a. Plant species vary but plant for is similar 3. How does latitude influence biomes? a. Above 60o N latitude Artic b. Below 60o N latitude 4. How does continental placement influence biomes? a. Coastal areas more moderate temp fluctuations b. Interior areas more extreme temp fluctuations c. Areas behind mountains
Premium Plant Temperate broadleaf and mixed forests Climate
Molecular formula from empirical formula 1) There is a whole number multiple of the empirical formula in the molecular formula MF – (EF) n Molar mass/ empirical formula mass = n EMPRICIAL FORMULA FROM COMBUSTION DATA 1) In a combustion reaction an organism sample is burned in the presence of oxygen and produces CO2 and H2O as main products. 2) A hydrocarbon is a molecule that contains only carbon and hydrogen 3) Combustion analysis of naphthalene‚ a hydrocarbon used in mothballs
Premium Oxygen Chemistry Hydrogen
9.5.2.4 Use available evidence to suggest reasons for the differences in the range of electromagnetic radiation detected by humans and other animals: Reasons for differences in detection between humans and other animals: The differences between human detection range and other animals detection range relates to their environment in which they live in and their way of life. The detection out of the visible spectrum is usually an adaptation for survival of the organism. Humans detection
Premium Electromagnetic radiation Infrared Electromagnetic spectrum
Q1:Why is reproduction essential for organisms? Reproduction is a fundamental feature of all living organisms. It is a biological process through which living organisms produce offspring’s similar to them. Reproduction ensures the continuance of various species on the Earth. In the absence of reproduction‚ the species will not be able to exist for a long time and may soon get extinct. Q2:Which is a better mode of reproduction sexual or asexual? Why? Sexual reproduction is a better mode of reproduction
Premium Reproduction Reproductive system Gamete
CELL DIVISION Important Formula #1 In case of animal cells‚ cytokinesis takes place through cell furrow (centripetal). Cytokinesis takes place in plants by the formation of cell plate (centrifugal). Important Formula #2 Meiosis causes reduction chromosome number‚ so it is also known as reduction division. CELL RESPIRATION Important Formula #1 For oxidative phosphorylation‚ 2.5 ATP are produced per NADH and 1.5ATP per FADH2. (Approx.) Important Formula #2 Non-germinating live seeds and
Premium Bacteria Microbiology Louis Pasteur