Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 32, Problem 16CTQ
Describe the reproductive organs inside a flower
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Glu-His-Trp-Ser-Gly-Leu-Arg-Pro-Gly
The pKa values for the peptide's side chains, terminal amino groups, and carboxyl groups are provided in the table.
Amino acid Amino pKa Carboxyl pKa Side-chain pKa
glutamate
9.60
2.34
histidine
9.17
1.82
4.25
6.00
tryptophan
9.39
2.38
serine
9.15
2.21
glycine
9.60
2.34
leucine
9.60
2.36
arginine
9.04
2.17
12.48
proline
10.96
1.99
Calculate the net charge of the molecule at pH 3.
net charge at pH 3:
Calculate the net charge of the molecule at pH 8.
net charge at pH 8:
Calculate the net charge of the molecule at pH 11.
net charge at pH 11:
Estimate the isoelectric point (pl) for this peptide.
pl:
Biology Question
This entire structure (Pinus pollen cone) using lifecycle terminology is called what?
Chapter 32 Solutions
Biology 2e
Ch. 32 - Figure 32.3 If the anther is missing, what type of...Ch. 32 - Figure 32.8 An embryo sac is missing the...Ch. 32 - Figure 32.20 What is the function of the...Ch. 32 - In a plant’s male reproductive organs, development...Ch. 32 - The stamen consists of a long stalk called the...Ch. 32 - Theare collectively called the calyx sepals petals...Ch. 32 - The pollen lands on which part of the flower?...Ch. 32 - After double fertilization: a zygote and ______...Ch. 32 - The fertilized ovule gives rise to the fruit seed...Ch. 32 - What is the term for a fruit that develops from...
Ch. 32 - The is the outermost covering of a______ fruit....Ch. 32 - _______ is a useful method of asexual reproduction...Ch. 32 - Which of the following is an advantage of asexual...Ch. 32 - Plants that flower once in their lifetime are...Ch. 32 - Plant species that complete their lifecycle in one...Ch. 32 - Describe the reproductive organs inside a flowerCh. 32 - Describe the two-stage lifecycle of plants: the...Ch. 32 - Describe the four main parts, or whorls, of a...Ch. 32 - Discuss the differences between a complete flower...Ch. 32 - Why do some seeds undergo a period of dormancy,...Ch. 32 - Discuss some ways in which fruit seeds are...Ch. 32 - What are some advantages of asexual reproduction...Ch. 32 - Describe natural and artificial methods of asexual...Ch. 32 - Discuss the life cycles of various plantsCh. 32 - How are plants classified on the basis of...
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