Homeotic genes - Study guides, Class notes & Summaries

emergent properties new properties that emerge with each step upward in the hierarchy of life, owing to the arrangement and interactions of parts as complexity increases negative feedback a mechanism of response in which a stimulus initiates reactions that reduce the stimulus positive feedback a physiological control mechanism in which a change in a variable triggers mechanisms that amplify the change inductive reasoning reasoning based on observed patterns polyme...

LIFE 120 UNL Biology Practice Exam 4|33 Questions with Verified Answers Transcription in eukaryotes requires which of the following in addition to RNA polymerase? A) the protein product of the promoter B) ribosomes and tRNA C) aminoacyl synthetase D) start and stop codons E) several transcription factors (TFs) - CORRECT ANSWER E During splicing, which molecular component of the spliceosome catalyzes the excision reaction? A) RNA B) DNA C) protein D) sugar E) lipid - CORRECT ANSW...

Developmental Biology Exam Questions With Correct Answers The bicoid protein gradient results from: - answerthe diffusion of bicoid protein across the syncytial embryo . Which of the following is true about maternal effect genes such as bicoid - answerembryo maternal mRNA genotype is same as mother genotype The bicoid gradient is not representative of morphogen gradients observed in - answerThe bicoid gradient is not representative of morphogen gradients observed in How does the mother p...

Regulatory gene - answer-a gene that codes for a transcription factor, so controls the expression of structural genes Structural gene - answer-gene that codes for polypeptide Mutation - answer-a random change in the sequence of bases in an individual gene, or in the structure of the chromosome (which changes the sequence of genes on the chromosome) Examples of mutagenic agents - answer-x-rays, uv light (physical), nitrous acid (chemical) & some viruses (biological agents) What can ch...

AP Biology exam cram study guide 2024 emergent properties new properties that emerge with each step upward in the hierarchy of life, owing to the arrangement and interactions of parts as complexity increases inductive reasoning reasoning based on observed patterns polymer large compound formed from combinations of many monomers meiosis a process in cell division during which the number of chromosomes decreases to half the original number by two divisions of the nucleus, which...

polar Molecule with partial charges. Mixes with water. nonpolar No partial charges. Do not mix with water. electronegativity Attraction of an atom for electrons in a covalent bond. cohesion Water molecules sticking to each other. adhesion Water molecules sticking to other surfaces. solute Something dissolved in a solution. solvent Dissolving agent of a solution. isomers Same atoms but different arrangement. structural isomers Diffe...

AP Biology Final Exam Review Question and answers rated A+emergent properties new properties that emerge with each step upward in the hierarchy of life, owing to the arrangement and interactions of parts as complexity increases negative feedback a mechanism of response in which a stimulus initiates reactions that reduce the stimulus positive feedback a physiological control mechanism in which a change in a variable triggers mechanisms that amplify the change inductive rea...

A&P Midterm Exam Study Guide Solutions anatomy - ANSWER-study of the forms and organizationof body structures (morphology). Anatomists examine the body and its organization. Physiology - ANSWER-study of the functions of body parts (what they do and how they do it). Physiologists perform experiments to determine functions. Homeostasis - ANSWER-process of maintaining stable internal conditions such as temperatures. Genes - ANSWER-units of heredity that contribute to the characteristics or tr...

Fertilization - answer-joining of a sperm and an egg to form a diploid zygote Organisms that use external fertilization - answer-most animals who participate in this live in aquatic environments like tadpoles -tend to produce large number of gametes How are gametes released for external fertilization - answer--gametogenesis occurs in response to environmental cues( lengthening days and warmer water temperatures) that indicate a favorable season for breeding -gametes are released in respo...

Ap Bio Chapter 18 Practice Test 99 Questions with Verified Answers The role of a metabolite that controls a repressible operon is to - CORRECT ANSWER e) bind to the repressor protein and activate it The tryptophan operon is a repressible operon that is - CORRECT ANSWER E) turned off whenever tryptophan is added to the growth medium. Which of the following is a protein produced by a regulatory gene? - CORRECT ANSWER D) repressor A lack of which molecule would result in the cell's ina...