biol 1124 (BIOL1124)

Who is Gregor Mendel - Answer Father of genetics, formulated the basic laws of genetics (everything in this quizlet set) using pea plants in his garden alleles - Answer two alternate forms of a gene on chromosomes for each trait in their body cells alleles exist because each person gets 2 copies of every chromosome (homologous pairs) homozygous dominant - Answer Two dominant alleles (AA) homozygous recessive - Answer Two recessive alleles (aa) heterozygous - Answer on...

What evidence led to the proposal of the Davson-Danielli model? - Answer Chemical analysis showed that membranes were composed of phospholipid and protein, evidence suggested that the plasma membrane had enough phospholipids to form an area twice as large, experiments showed that membranes form a barrier to some substances (and layers of proteins could act as the barrier) What evidence led to the falsification of the Davson-Danielli model and the proposal of the Singer-Nicholson model? - A...

A pattern of regularly recurring properties: - Answer Periodicity The number of protons in the nucleus of each atom: - Answer Atomic number The vertical columns of the Periodic Table of the Elements: - Answer Groups A set of elements with similar properties: - Answer Family The horizontal rows of the Periodic Table of the Elements: - Answer Periods Elements with both metal and nonmetal properties: - Answer Metalloids One-half the distance from the nucleus of ...

light microscope (LM) - Answer An optical instrument with lenses that refract (bond) visible light to magnify images and project them into a viewer's eyes or onto photographic film. micrograph - Answer A photograph taken through a microscope. cell theory - Answer The cell theory that all living cells are composed of cells and that all cells come from other cells. electron microscope (EM) - Answer A microscope that uses magnets to focus an electron beam through, or onto th...

True or False: The number of chromosomes differs from species to species. - Answer True What happens if an individual has too many copies of a chromosome? Too few? Which is more problematic? What type of error during gametogenesis could lead to gametes with n+1 or n-1 chromosomes? - Answer - If an individual has too many or too few copies of a chromosome, they are not likely to survive. - However, having too few copies of a chromosome is more problematic than having too many. - An o...

1. What are the four steps in animal food processing? - Answer Ingestion, digestion, absorption, egestion (defecate poo) 2. How do animals acquire food energy from their environment? - Answer eating plants- herbivore, animals- carnivore, both- omnivore 3. What does food do for an animal like you, exactly? - Answer energy, essential nutrients, building block of molecules 4. What are the categories of essential nutrients? - Answer 20 Amino acids (9 essential), fatty acids (ome...

Describe the characteristics of science - Answer Observation, regulation, processing information, and self-correcting process Why is science considered a unified endeavor? - Answer The methods, reasoning, and zest for life are universal. To fully understand a process, we must use science as a way of thought, not simply as a storehouse for specific information. Compare and contrast science and technology - Answer Science is a tool that allows us to comprehend natural phenomena. Tec...

Allele - Answer Alternative versions of a gene that produce distinguishable phenotypic effects Benthic - Answer The bottom surface of an aquatic environment Biotechnology - Answer The manipulation of living organisms or their components to produce useful products (ex. genetically engineered food) Carrying Capacity - Answer The maximum population size that can be supported by the available resources, symbolized as K (r = growth rate) Cystic Fibrosis - Answer A human gen...

A synonymous mutation A. Changes the encoded protein but not the DNA B. Changes the DNA but not the encoded protein C. Is a nonsense mutation D. Causes a reading frameshift E. All of the above - Answer B 2. What is an example of a physiological adaptation that enables an organism to function optimally in its environment? A. Blood flow into the gills of fish moves in the opposite direction of water flow to maximize oxygen extraction from water. B. The African naked mole rat's in...

crossing over - Answer exchange of genetic material between homologous chromosomes during prophase I of meiosis gene expression - Answer process by which information encoded in DNA is translated into functional proteins or RNAs, such as rRNA and tRNA Gene - Answer A discrete unit of hereditary information in a specific nucleotide sequence. Chromatin - Answer This complex of DNA & Protein that makes up a chromosome Template strand of DNA - Answer the DNA strand that is ...