EBK CAMPBELL BIOLOGY IN FOCUS
2nd Edition
ISBN: 8220101459299
Author: Reece
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 29, Problem 7TYU
Two groups of tomatoes were grown in the laboratory, one with humus added to the soil and the other a control without humus. The leaves of the plants grown without humus were yellowish (less green) compared with those of the plants grown in humus-enriched soil. The best explanation for this difference is that
- A. the healthy plants used carbohydrates in the decomposing leaves of the humus for energy to make chlorophyll.
- B. the humus made the soil more loosely packed, so water penetrated more easily to the roots.
- C. the humus contained minerals such as magnesium and iron, needed for the synthesis of chlorophyll.
- D. the heat released by the decomposing leaves of the humus caused more rapid growth and chlorophyll synthesis.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
The image here shows the growth rate for Chlamydomonas as a function of temperature.
Which of the following reasons could explain why Chlamydomonas can't grow at 40°C?
10
15
20
25
30
35
40
Growth Temperature (*C)
A. The rate of molecular motion is too high at 40°C to sustain life.
B. The turnover time of rubisco is too fast.
O C. The glycolysis enzyme hexokinase loses its tertiary structure.
D. The desaturase enzyme DesA, is not expressed.
Reset Selection
Growth Rate
(divisions/day)
Five sweetener samples (labelled A to E) were tested by 97 individuals for the intensity of their sweetness. The ranking was done with #1 as the least sweet and #5 as the sweetest.
Sugars
Counts
1
2
4
A
14
42
7
В
2
59
23
9
23
59
2
63
16
9
5
93
v What is the identity of sweetener sample "A"?
A. Sucralose
v What is the identity of sweetener sample "B"?
B. Sucrose
v What is the identity of sweetener sample "C"?
C. Aspartame
v What is the identity of sweetener sample "D"?
D. Lactose
What is the identity of sweetener sample "E"?
E. Glucose
Is Bt corn ethically acceptable or otherwise? Explain your conclusion.
Chapter 29 Solutions
EBK CAMPBELL BIOLOGY IN FOCUS
Ch. 29.1 - Why is long-distance transport important for...Ch. 29.1 - Prob. 2CCCh. 29.1 - WHAT IF? Some plants can detect increased levels...Ch. 29.2 - If a plant cell immersed in distilled water has a...Ch. 29.2 - How would a reduction in the number of aquaporin...Ch. 29.2 - WHAT IF? What would happen if you put plant...Ch. 29.3 - Prob. 1CCCh. 29.3 - WHAT IF? If an element increases the growth rate...Ch. 29.3 - Prob. 3CCCh. 29.4 - Prob. 1CC
Ch. 29.4 - Prob. 2CCCh. 29.4 - Prob. 3CCCh. 29.5 - A scientist adds a water-soluble inhibitor of...Ch. 29.5 - WHAT IF? Suppose an Arabidopsis mutant lacking...Ch. 29.5 - Prob. 3CCCh. 29.6 - Prob. 1CCCh. 29.6 - WHAT IF? If you buy cut flowers, why might the...Ch. 29.6 - Prob. 3CCCh. 29.7 - Prob. 1CCCh. 29.7 - Prob. 2CCCh. 29.7 - Prob. 3CCCh. 29 - Which structure or compartment is part of the...Ch. 29 - Prob. 2TYUCh. 29 - Prob. 3TYUCh. 29 - What would enhance water uptake by a plant cell?...Ch. 29 - Prob. 5TYUCh. 29 - Compared with a cell with few aquaporin proteins...Ch. 29 - Two groups of tomatoes were grown in the...Ch. 29 - Prob. 8TYUCh. 29 - Prob. 9TYUCh. 29 - SCIENTIFIC INQUIRY A Minnesota gardener notes that...Ch. 29 - Prob. 11TYUCh. 29 - FOCUS ON INTERACTIONS The soil in which plants...Ch. 29 - Prob. 13TYU
Additional Science Textbook Solutions
Find more solutions based on key concepts
8. Studies of DNA support which of the following?
a. Members of the group called australopiths were the first t...
Campbell Biology: Concepts & Connections (9th Edition)
You microscopically examine scrapings from a case of Acan-thamoeba keratitis. You expect to see a. nothing. b. ...
Microbiology: An Introduction
2 Of the uterus, small intestine, spinal cord, and heart, which is/are in the dorsal body cavity?
Anatomy & Physiology (6th Edition)
Why are BSL-4 suits pressurized? Why not just wear tough regular suits?
Microbiology with Diseases by Body System (4th Edition)
Define histology.
Fundamentals of Anatomy & Physiology (11th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- 33) True or False: Plants undergo photosynthesis to make glucose using light energy. Plants also use cellular respiration to break down glucose and convert it into energy (stored as ATP). A) True B) Falsearrow_forwardPlease answer the following question : (a.) and (b.)arrow_forwardc) Pasteurization is a technique that uses temperatures of about 72°C to neutralize potential pathogens in foods. a. Justify the effect does this temperature have on the enzymes and cellular metabolism of pathogens. b. Argue why does the heat of pasteurization kill some microorganisms yet fail to affect thermophiles?arrow_forward
- Most ecosystems on Earth rely on sunlight as the primary energy source for the synthesis of organic compounds that living organisms need. Sunlight does not penetrate deep enough in the ocean to provide energy for organisms living near hydrothermal vents. How can these densely populated communities survive without energy from the sun? A. chemoheterotrophic bacteria convert organic compounds into carbon dioxide which is used by other organisms as an energy source B. chemoautotrophic bacteria harvest chemical energy from hydrogen sulfide and then provide the basis of food for the vent communities C. chemoheterotrophic bacteria harvest chemical energy from hydrogen sulfide and then provide the basis of food for the vent communities D. chemoautotrophic bacteria fix nitrogen which then is used as a source of energy for other organismsarrow_forwardDefine the following terms: a. autotroph b. chemoautotroph c. photoautotroph d. photoheterotroph e. chemoheterotropharrow_forwardMatch the -troph term with the correct definition. (match each letter to the corresponding number) Each term applies to only 1 definition. A.chemotroph B. phototroph C. heterotroph D.heliotroph E. autotroph -------------------------------- 1.gets energy from chemical bonds 2.gets carbon from inorganic sources (carbon dioxide) 3.gets carbon from organic sources (other organisms) 4.gets energy from lightarrow_forward
- Patchouli essential oil comes from the patchouli plants of tropical East and Southeast Asia; it is: Choose one answer. a. steam distilled from the leaves b. extracted via enfleurage c. steam distilled from the flowers d. macerated from the leavesarrow_forwardThroughout history, spices have been used as preservatives and to cover up the smell or taste of food that is slightly spoiled. The success of some spices led to a magical, ritualized use, and possession of spices was often limited to priests or other powerful members of the community. a. Choose a spice and trace its use geographically and historically. What is its common use today? b. Spices grow and tend to be used predominantly in warmer climates. Explainarrow_forwardCamellia and azalea are plants that produce yellow leaves, which is considered an undesirable outcome, when they are grown on alkaline soil. Which of the statements below support the fact about camellia and azalea stated above? a. Loam soil is not advisable to be used in growing camellia and azalea because of its acidity. b. Camellia and azalea should not be planted in chalk soil. c. Camellia and azalea produced yellow leaves because they are planted in acidic soil. d. Camellia and azalea require chalk soil to counter the effect of the alkaline soil used.arrow_forward
- Chlorophyll- enriched products and supplements are now being soldin the market. Find out what benefits these products claim. With theknowledge about chlorophyll, are these claims are valid? Explain and support the answer.arrow_forwardIn doing a phytochemical determination of natural products, one of the tests involved the determination of indoles. Would the presence of plant secondary metabolites interfere with the tests for proteins giving false-positive results? Why or why not?arrow_forwardYou want to prepare 500 mL of the macronutrient and micronutrient stock solutions which have 100X and 1000X higher concentration, respectively, than the required concentration in the culture mediuma)Approximately 4 % (w/v) sucrose and 0.8 % (w/v) agar are added into the medium.Determine the amount of sucrose and agar (in gram) required in order to prepare 200 mL MS medium. Show your workarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
How do Plants Handle Stress?; Author: Alex Dainis;https://www.youtube.com/watch?v=TYsnveEHqec;License: Standard Youtube License