AP Bio Concepts Exam Questions With Verified Answers.

AP Bio Concepts Exam Questions With Verified Answers. A feature of amino acids NOT found in carbohydrates is the presence of - answerNitrogen Atoms Active Transport - answermovement of a substance against its concentration gradient (from low to high concentration) Alleles - answeris one of two or more forms of a gene. Different alleles can result in different traits, such as color. Other times, different alleles will have the same result in the expression of a gene. Altruism - answerselfless concern for the welfare of others. An action potential - answerA short-term change in the electrical potential on the surface of a cell. Anaphase I - answerbegins when the two chromosomes of each bivalent (tetrad) separate and start moving toward opposite poles of the cell as a result of the action of the spindle. Annelid - answerAny of various worms or wormlike animals of the phylum Annelida, characterized by an elongated, cylindrical, segmented body and including the earthworm and leech. Arteries - answerare blood vessels that carry blood away from the heart. Asexual reproduction - answera mode of reproduction by which offspring arise from a single parent, and inherit the genes of that parent only, it is reproduction which does not involve meiosis, ploidy reduction, or fertilization. Auxins - answerA class of plant growth substances and morphogens. Binary fission - answerAsexual reproduction in bacteria. Biomass - answerA renewable energy source, is biological material from living, or recently living organisms, such as wood, waste, (hydrogen) gas, and alcohol fuels. Bone - answerrigid organs that constitute part of the endoskeleton of vertebrates Bryophytes - answerembryophytes (land plants) that do not have true vascular tissue and are therefore called 'non-vascular plants. Budding - answerAsexual reproduction in yeasts in which smaller cells grow from a parent cell. Calcitonin - answerA 32-amino acid linear polypeptide hormone that is produced in humans primarily by the parafollicular cells thyroid, and in many other animals in the ultimobranchial body. Cartilage - answerflexible connective tissue found in many areas in the bodies of humans and other animals Cellulose - answerA substance that cannot be broken down by cows. Characteristics of bacteria - answerProkaryotes, meaning they do not have membrane bound organelles. Also true bacteria have a peptidoglycan cell wall. Characteristics of bacteria & Fungi - answerCell wall, DNA, and plasma membrane. Characteristics of water - answer*Water's cohesive behavior *Its ability to moderate temperature *Its expansion upon freezing *Its versatility as a solvent. Chlorophyll a - answerA specific form of chlorophyll used in oxygenic photosynthesis. It absorbs most energy from wavelengths of violet-blue and orange-red light. Chlorophyll b - answerHelps in photosynthesis by absorbing light energy. It is more soluble than chlorophyll a because of its carbonyl group. Class - answerA rank used in the biological taxonomy of all organisms. Class Amphibia - answerAnimals that respire through their gills, lungs and moist, soft skin. Class Aves - answerHomeotherms with hollow, air-filled bones. Class Reptilia - answerCold-blooded animals with dry, scaly bodies and lay eggs with leathery shells. Coenzymes - answerSmall organic molecules that link to enzymes and whose presence is essential to the activity of those enzymes. Commensalism - answera class of relationship between two organisms where one organism benefits but the other is neutral (no harm or benefit). Companion cells - answerA specialized parenchyma cell, located in the phloem of flowering plants and closely associated in development and function with a sieve-tube element.