BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 40, Problem 1IQ
Summary Introduction
To determine: The reason why it will be advantageous for plants to have four distinct pathways that all effect the expression to LFY.
Introduction: The flowering of plants requires more energy accumulated via the process of photosynthesis, or the plants require light for flowering but is distinct from photoperiodic. The sensitivity towards the photoperiod helps the plants to respond to all the seasonal changes. The flowering responses to the day length have different categories such as short-day, long-day, and day-neutral plants.
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The pharmaceutical (−)-trans-Δ9-tetrahydrocannabinol (THC) is a metabolite that is biosynthesized specifically the glandular trichome cells of the plant species Cannabis sativa. The gene that catalyzes that last step in THC biosynthesis, namely THC ACID SYNTHASE (THCAS), is expressed exclusively in the glandular trichome cells of the plant and no other cell types. Given that all cell types arise from stem cells that have identical DNA, explain how glandular trichome cells develop unique morphology and why THCAS is expressed exclusively in that cell type.
Practice ques tion 1A
Mutations in the signalling pathways depicted above have been associated with an increased
incidence of several types of cancer. Which of the below mutations (#1-5) could potentially cause
cancer in an individual? Be sure to explain why.
Info:
In many mammalian species, including humans, there is a hormone (H) that acts as a key regulator of
hexose (6 carbon sugar, eg - glucose) metabolism, cell cycle progression, and ultimately cell survival.
Hormone H regulates these effects via its receptors which are found at both the cell surface (csRu)
and within the cell (icRu). The signalling pathways that become activated in the presence of hormone
H are depicted and described below.
hormone
Signalling via the cell surface
receptor
Hormone H mediates its cell cycle
stimulatory and pro-survival effects by
binding to and activating the cell
surface hormone H receptor (csRu).
· The activated csBH activates Lyn,
which activates RAS and ultimately
the Raf/MEK/ERK kinase…
Fill in the gap
Although signal transduction pathways are modeled mostly by ----------, there are some underlying difficulties in the modeling. Therefore, it is necessary to develop -------- to capture the details of signaling pathways by exploiting high-throughput ------------
Chapter 40 Solutions
BIOLOGY
Ch. 40.1 - Prob. 1LOCh. 40.1 - Prob. 2LOCh. 40.1 - Prob. 3LOCh. 40.2 - Name the four genetically regulated flowering...Ch. 40.2 - Define floral determination.Ch. 40.2 - Prob. 3LOCh. 40.3 - Prob. 1LOCh. 40.3 - Prob. 2LOCh. 40.3 - Prob. 3LOCh. 40.4 - Prob. 1LO
Ch. 40.4 - Prob. 2LOCh. 40.4 - Prob. 3LOCh. 40.5 - Prob. 1LOCh. 40.5 - Prob. 2LOCh. 40.5 - Prob. 3LOCh. 40.6 - Prob. 1LOCh. 40.6 - Prob. 2LOCh. 40.7 - Prob. 1LOCh. 40.7 - Prob. 2LOCh. 40.7 - Prob. 3LOCh. 40.8 - Prob. 1LOCh. 40.8 - Prob. 2LOCh. 40.8 - Prob. 3LOCh. 40 - Prob. 1DACh. 40 - Prob. 1IQCh. 40 - Prob. 2IQCh. 40 - Prob. 3IQCh. 40 - Morphogenesis is the development of a. growth...Ch. 40 - Vernalization induces flowering following exposure...Ch. 40 - Prob. 3UCh. 40 - Which of the following is NOT a component of a...Ch. 40 - Megasporcs are produced in a. anthers by mitosis....Ch. 40 - A stamen contains a a. style. b. stigma. c....Ch. 40 - Unlike bee-pollinated flowers, bird-pollinated...Ch. 40 - Prob. 8UCh. 40 - Endosperm is produced by the union of a. a central...Ch. 40 - During the globular stage of embryo development,...Ch. 40 - Which of the following is NOT a primary meristem?...Ch. 40 - Prob. 12UCh. 40 - The shoot tip of an emerging maize seedling is...Ch. 40 - Asexual reproduction is likely to be most common...Ch. 40 - Prob. 15UCh. 40 - Prob. 16UCh. 40 - Prob. 17UCh. 40 - Prob. 1ACh. 40 - Your roommate is taking biology with you this...Ch. 40 - In Iowa, a company called Team Corn works to...Ch. 40 - Prob. 4ACh. 40 - One of the most notable differences between gamete...Ch. 40 - A plant lacking the WOODEN LEG gene will likely a....Ch. 40 - How would plant development change if the...Ch. 40 - Prob. 8ACh. 40 - Loss-of-function mutations in the suspensor gene...Ch. 40 - Prob. 1SCh. 40 - If you live in a north temperate region, explain...Ch. 40 - In wild columbine flower morphology encourages...Ch. 40 - In most part of the world, commercial potato crops...Ch. 40 - Design an experiment to determine whether light or...
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