PRINCIPLES OF LIFE - LAUNCHPAD (1 TERM)
3rd Edition
ISBN: 9781319410551
Author: HILLIS
Publisher: MAC HIGHER
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Chapter 24, Problem 5.3Q
Summary Introduction
To determine: The force that is essential for the movement of phloem contents to pass through an aphid stylet.
Introduction: Phloem is a plant vascular tissue that transports food prepared from leaves during photosynthesis to all plant parts. It is made up of distinct cells such as sieve tubes, companion cells, phloem parenchyma, and phloem fibers. Aphids are tiny insects that feed on plant tissues especially phloem with the help of a special organ stylet.
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The Snapdragon is a popular garden flower that comes in a variety of colours, including red, yellow, and orange. The genotypes and associated phenotypes for some of these flowers are as follows:
aabb: yellow
AABB, AABb, AaBb, and AaBB: red
AAbb and Aabb: orange
aaBB: yellow
aaBb: ?
Based on this information, what would the phenotype of a Snapdragon with the genotype aaBb be and why?
Question 21 options:
orange because A is epistatic to B
yellow because A is epistatic to B
red because B is epistatic to A
orange because B is epistatic to A
red because A is epistatic to B
yellow because B is epistatic to A
A sample of blood was taken from the above individual and prepared for haemoglobin analysis. However, when water was added the cells did not lyse and looked normal in size and shape. The technician suspected that they had may have made an error in the protocol – what is the most likely explanation?
The cell membranes are more resistant than normal.
An isotonic solution had been added instead of water.
A solution of 0.1 M NaCl had been added instead of water.
Not enough water had been added to the red blood cell pellet.
The man had sickle-cell anaemia.
A sample of blood was taken from the above individual and prepared for haemoglobin analysis. However, when water was added the cells did not lyse and looked normal in size and shape. The technician suspected that they had may have made an error in the protocol – what is the most likely explanation?
The cell membranes are more resistant than normal.
An isotonic solution had been added instead of water.
A solution of 0.1 M NaCl had been added instead of water.
Not enough water had been added to the red blood cell pellet.
The man had sickle-cell anaemia.
Chapter 24 Solutions
PRINCIPLES OF LIFE - LAUNCHPAD (1 TERM)
Ch. 24.1 - Prob. 1LOCh. 24.1 - Prob. 2LOCh. 24.1 - Prob. 1FQCh. 24.1 - Prob. 1RACh. 24.1 - Prob. 2RACh. 24.2 - Prob. 1LOCh. 24.2 - Prob. 2LOCh. 24.2 - Prob. 3LOCh. 24.2 - Prob. 1FQCh. 24.2 - Prob. 1TK
Ch. 24.2 - Prob. 2TKCh. 24.2 - Prob. 3TKCh. 24.2 - Prob. 1RACh. 24.2 - Prob. 2RACh. 24.3 - Prob. 1LOCh. 24.3 - Prob. 2LOCh. 24.3 - Prob. 1RACh. 24.3 - Prob. 2RACh. 24.4 - Prob. 1LOCh. 24.4 - Prob. 2LOCh. 24.4 - Prob. 3LOCh. 24.4 - Prob. 1RACh. 24.4 - Prob. 2RACh. 24.4 - Prob. 3RACh. 24.5 - Prob. 1LOCh. 24.5 - Prob. 1RACh. 24.5 - Prob. 2RACh. 24.5 - Prob. 3RACh. 24 - Prob. 1.1QCh. 24 - Prob. 1.2QCh. 24 - Prob. 1.3QCh. 24 - Prob. 1.4QCh. 24 - Prob. 2.1QCh. 24 - Prob. 2.2QCh. 24 - Prob. 3.1QCh. 24 - Prob. 3.2QCh. 24 - Prob. 3.3QCh. 24 - Prob. 4.1QCh. 24 - Prob. 4.2QCh. 24 - Prob. 4.3QCh. 24 - Prob. 5.1QCh. 24 - Prob. 5.2QCh. 24 - Prob. 5.3Q
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