Bioscience Study guides, Class notes & Summaries

A plant that has purple flowers is crossed with one that has white flowers. The offspring were half white and half purple. What were the genotypes of the parents? A. Pp x pp B. Pp x Pp C. PP x pp D. PP x WW correct answers A. Pp x pp Incomplete dominance is associated with what genotypic ratio in the F2 generation for a monohybrid cross? A. 3:1 B. 1:2:1 C. 9:3:3:1 D. 1:1 E. 1:3 correct answers B. 1:2:1 Gel electrophoresis separates DNA strands on the basis of A. amount of nucl...

A biomarker is a biochemical or physical feature that can be measured objectively as an indicator of a normal or abnormal biological process. correct answers True Elevated glucose is used as a biomarker to indicate which disease state? correct answers d. Diabetes Several biochemical principles are used to identify a specific bio-marker and thereby diagnose a particular disease state. Which of the following is not among the principles that are commonly used? correct answers c. A scan of the...

Distinguish between auto and heterotrophs correct answers Auto- makes their own food for energy Hetero- eats other organisms to gain energy Generalized formula for photosynthesis correct answers Energy + 6CO2 +6H2O ---> C6H12O6 + 6O2 What are the reactants, products, and reducing and oxidizing agents correct answers Reactants- carbon dioxide and water Products- sugar and oxygen gas H2O gets oxidized CO2 becomes reduced Cell structures associated with photosynthesis correct answer...

What is the human genome? correct answers a composite genome derived from multiple donors How many nucleotides are in the human genome? correct answers 3 billion What percentage of gene encoding areas are covered by the Human Genome? correct answers 1-2% What does a complete genome contain? correct answers all the genetic material of an organism What is the central dogma in molecular biology? correct answers DNA is transcribed into RNA and is translated into protein What is the es...

absorbance (aka. extinction/optical density) correct answers logarithmic measure of the amount of light absorbed as the light passes through a sample or substance; 0-2 au amplitude correct answers height of a wave (power); determines the pitch of sound waves autonomy correct answers respect for persons, allowing for informed consent beneficence correct answers do no harm, known as utilitartianism bioethics correct answers study of decision-making as it relates to moral decisions that...

1) If a horticulturist breeding gardenias succeeds in having a single plant with a particularly desirable set of traits, which of the following would be her most probable and efficient route to establishing a line of such plants? correct answers C) Clone the plant asexually to produce an identical one. 2) The human genome is minimally contained in which of the following? correct answers A) every human cell 3) In the human species, all somatic cells have 46 chromosomes. Which of the followi...

Level of biological organization correct answers Molecules organelles cells tissues organs population comunities ecosystems biosphere What are the three domains to life correct answers Archaea, bacteria, and eukarya Which are prokaryotic and what are their defining features correct answers Archaea and bacteria. single celled organisms containing no nucleus or membrane bound organelles Which are eukaryotic and what are their defining features correct answers eukaryotes. membrane ...

Energy typically enters an ecosystem as a. light energy b. kinetic energy c. thermal energy d. ATP e. chemical energy correct answers a. light energy what approach in science allows us to study emergent properties of biological processes? a. reductionism b. systems biology c. mutualism d. stoichiometry correct answers b. systems biology charles darwin proposed that "descent with modification" resulted when organisms of a particular species become adapted to their environment be...

What is the main constituent of a cell membrane by surface area? correct answers Phospholipids Which organelle is responsible for making proteins? correct answers Ribosomes Where do we house our DNA? correct answers Nucleus What organelles are responsible for the enzymatic breakdown of phagocytised material in the cell? correct answers Lysosomes Which organelles are involved in nuclear division? correct answers Centrioles Where is ATP produced in the cell? correct answers Mitochon...

emergent properties correct answers Atoms->molecules->cells->tissue->organs->organ systems->organisms Prokaryote correct answers bacteria & archea. no organelles Eukaryote correct answers protists, plants, fungi, and animals membrane-bound organelles All cells share.. correct answers cytoplasm, DNA, ribosome, a cell membrane Gene expression correct answers converting of gene information to cellular product (protein or RNA) Genome correct answers an organism's...