For all these scenarios, assume that different cyanobacteria colonies are all composed of the exact same...
For all these scenarios, assume that different cyanobacteria colonies are all composed of the exact same number of cells. The challenges they face can lead to selection for changes in the relative number of cell types in a colony (but not changes in absolute cell number).
Scenario II: Cyanobacteria colony #3 is living in a pond that frequently dries up for extended periods of time, which causes most cells to desiccate and die due to DNA damage and membrane instability. Cyanobacteria colony #4 is living in a pond that rarely if ever dries up. Based on this difference in desiccation risk, how might evolution shape colony #3 relative to colony #4?
A. colony #3 should have more vegetative cells than colony #4
B. colony #3 should have more heterocysts than colony #4
C. colony #3 should have more spores than colony #4
D. none of the above
Homework Answers
C. colony #3 should have more spores than colony #4
Due to drying of the pond, Cyanobacteria colony # 3 will form more spores as compared to cyanobacteria colony #4
Add Answer to:
For all these scenarios, assume that different cyanobacteria
colonies are all composed of the exact same...
QUESTION 1 Cell membranes are found in prokaryotes eukaryotes Both a and b QUESTION 2 A...
QUESTION 1 Cell membranes are found in prokaryotes eukaryotes Both a and b QUESTION 2 A nucleus can be found in ___________________________ cells. prokaryote Eukaryote Both a and b None of the above. QUESTION 3 Which of the following statements are part of Cell Theory? Cells are the basic units of life All living things are made up of cells Cells grow and reproduce All cells have the same basic composition. All of the above QUESTION 4 The area you...
4. Development of organelles Aa Aa 3 Modern eukaryotic cells are very complex and have many...
4. Development of organelles Aa Aa 3 Modern eukaryotic cells are very complex and have many features that allow them to function efficiently. These complexities took a very, very long time to evolve and likely progressed as a series of small improvements that were naturally selected. For example, modern eukaryotic cells have internal membranes surrounding their organelles and the nucleus. This arrangement likely arose when the cellular membranes of some ancient bacterial cells accidentally folded to become internal membranes. Which...
this is a very tough homework assignment for my environmental biology course so if everyone could...
this is a very tough homework assignment for my environmental
biology course so if everyone could please help me I would greatly
appreciate it because I have no access to tutors to check my
work.
which of the following is correct about binary fission? A) It is a common type of microbial cell division. B) Daughter cells are identicals. C) It leads to a microbial population. D) All of the above To decide if you should replace the existing antibacterial...
please help with whatever possible. thank you so much in advance. Name One use of serial...
please help with whatever possible. thank you so much in
advance.
Name One use of serial dilutions is to calculate the concentration of microorganisms. Since it would usually be challenging or even impossible to actually count the number of microorganisms in a sample, the sample is diluted and plated to get a reasonable number of colonies to count (usually between 25 to 250 colonies is the goal). Since each colony on an agar plate theoretically grew from a single microorganism,...
A sentence or two stating the hypothesis or hypotheses made. A sentence or two describing what...
A sentence or two stating the hypothesis or hypotheses
made.
A sentence or two describing what was done
A summary of the most important results
A sentence stating the major conclusion
EXPERIMENT 2: CHARACTERIZING BACTERIA ISOLATED FROM SOIL Data Tables Table 1: Gram Staining Observations Sample Colony 1 Colony 2 Colony 3 + "Normal" + "Heated" Table 2: Experiment 2b Catalase Assay Results Colony Catalase Assay Results ("Normal") Catalase Assay Results ("Heated') 1 2 3 + Characterizing Bacteria Isolated from...
LAB EXERCISE 5.1 continued The top row in the table below is an example for one...
LAB EXERCISE 5.1 continued The top row in the table below is an example for one couple's results. One parent e is heterozygous (one red, one yellows: AA). The dice roll determines yellow: AS) and the other homozygous for the normal hemoglobin allele (two that they will have four children. Creating Generation 2 Offspring Genotypes CoupleNumber of children Sample ASIAA | AA | 10 12 13 14 15 16 17 18 19 20 3 List the number of genotypes for...
Option 2: Conwav's Game of Life Your task is to write a program that plays Conway's...
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1. Label the microphylls and strobili in the Figure 1 below. Figure 1. Lycopodium sp. Examine...
1. Label the microphylls and strobili in the Figure 1 below. Figure 1. Lycopodium sp. Examine the prepared slide of a mature Lycopodium strobilus. (See text Figure 17-16, pages 406 and 407.) Note that Lycopodium, like most species in the Lycopodiaceae, is homosperous and only produces one type of spore 2. Label the spores in Figure 2 below. Figure 2. Lycopodium strobilus 1.s. 3. Given that Lycopodium is homosporaus, would you expect its gametophytes to be unisexual or bisexual? Explain...
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INTRODUCTION New mutations that arise on the X chromosome can have different likelihoods of becoming fixed...
INTRODUCTION
New mutations that arise on the X chromosome can have different
likelihoods of becoming fixed in the population than their
autosomal counterparts. This differential likelihood arises because
the effect of a recessive mutation on an autosome is only expressed
in homozygotes, whereas the effect of a similar recessive mutation
that arises on the X chromosome in a male is fully expressed. Thus,
advantageous recessive mutations are more likely to become fixed if
they are on the X chromosome than...
4. Development of organelles Aa Aa 3 Modern eukaryotic cells are very complex and have many features that allow them to function efficiently. These complexities took a very, very long time to evolve and likely progressed as a series of small improvements that were naturally selected. For example, modern eukaryotic cells have internal membranes surrounding their organelles and the nucleus. This arrangement likely arose when the cellular membranes of some ancient bacterial cells accidentally folded to become internal membranes. Which...
this is a very tough homework assignment for my environmental
biology course so if everyone could please help me I would greatly
appreciate it because I have no access to tutors to check my
work.
which of the following is correct about binary fission? A) It is a common type of microbial cell division. B) Daughter cells are identicals. C) It leads to a microbial population. D) All of the above To decide if you should replace the existing antibacterial...
please help with whatever possible. thank you so much in
advance.
Name One use of serial dilutions is to calculate the concentration of microorganisms. Since it would usually be challenging or even impossible to actually count the number of microorganisms in a sample, the sample is diluted and plated to get a reasonable number of colonies to count (usually between 25 to 250 colonies is the goal). Since each colony on an agar plate theoretically grew from a single microorganism,...
A sentence or two stating the hypothesis or hypotheses
made.
A sentence or two describing what was done
A summary of the most important results
A sentence stating the major conclusion
EXPERIMENT 2: CHARACTERIZING BACTERIA ISOLATED FROM SOIL Data Tables Table 1: Gram Staining Observations Sample Colony 1 Colony 2 Colony 3 + "Normal" + "Heated" Table 2: Experiment 2b Catalase Assay Results Colony Catalase Assay Results ("Normal") Catalase Assay Results ("Heated') 1 2 3 + Characterizing Bacteria Isolated from...
LAB EXERCISE 5.1 continued The top row in the table below is an example for one couple's results. One parent e is heterozygous (one red, one yellows: AA). The dice roll determines yellow: AS) and the other homozygous for the normal hemoglobin allele (two that they will have four children. Creating Generation 2 Offspring Genotypes CoupleNumber of children Sample ASIAA | AA | 10 12 13 14 15 16 17 18 19 20 3 List the number of genotypes for...
Option 2: Conwav's Game of Life Your task is to write a program that plays Conway's Game of Life (for details and ex amples, see https://en.vikipedia.org/wiki/Convay's.Game of Life). The basic gam ts played on each generation, each cell changes according to the following instructions: nal grid of square cells, each of which is either alive or dead. With 1. Any dead cell with exactly three live neighbors (out of its eight nearest neighbors) comes to life [reproduction]. 2. Any live...
1. Label the microphylls and strobili in the Figure 1 below. Figure 1. Lycopodium sp. Examine the prepared slide of a mature Lycopodium strobilus. (See text Figure 17-16, pages 406 and 407.) Note that Lycopodium, like most species in the Lycopodiaceae, is homosperous and only produces one type of spore 2. Label the spores in Figure 2 below. Figure 2. Lycopodium strobilus 1.s. 3. Given that Lycopodium is homosporaus, would you expect its gametophytes to be unisexual or bisexual? Explain...
Short-Answer Questions for Thought and Review 1. Describe three ways in which plasmids can increase the pathogenic nature of bacteria. 2. Explain what this statement means not always expressed as a phenotype." the information of a genotype is 3. Summarize the differences between prokaryotic and eukarytoic mRNA. 4. Explain why anticodon wobbling is useful to the cell in terms of protection against mistakes and the conservation of anabolic energy that would otherwise have to be spent manufacturing RNAs. 5. Table...
INTRODUCTION
New mutations that arise on the X chromosome can have different
likelihoods of becoming fixed in the population than their
autosomal counterparts. This differential likelihood arises because
the effect of a recessive mutation on an autosome is only expressed
in homozygotes, whereas the effect of a similar recessive mutation
that arises on the X chromosome in a male is fully expressed. Thus,
advantageous recessive mutations are more likely to become fixed if
they are on the X chromosome than...
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