Question
According to the phylogenetic tree, which domains are more genetically related?
The first branch of the phylogenetic tree holds the species of the bacteria division. It contains thermotoga bacteria, green non sulfur bacteria, cyanobacteria, gram positive bacteria, and purple bacteria. The second branch of the phylogenetic tree holds species of the Eukarya. It contains diplomonads, microsporidia, trichomonads, flagellates, entamoeba, slime molds, ciliates, plants, animals, and fungi. The last branch of the phylogenetic tree starts at the beginning of Eukarya line and holds the species of the Archaea division. It contains Thermococcus, Pyrodictium, Thermoproteus, Methanobacterium, and extreme halophiles.
Group of answer choices
Eukarya and Bacteria
Eukarya and Archaea
Plants and Animals
Bacteria and Archaea
Flag question: Question 2
Question 21 pts
(06.01 MC)
Which molecules are distinctively different in Bacteria and Archaea?
Group of answer choices
RNA polymerases
Fatty acids
Transcription DNA
Transfer DNA
Flag question: Question 3
Question 31 pts
(06.01 MC)
The image shows a bacterium with long tail-like projections streaming from it. The red arrow points to these projections.
What is the function of the structure identified by the arrow?
Group of answer choices
Mobility
Protection
Reproduction
DNA transfer
Flag question: Question 4
Question 41 pts
(06.01 MC)
Examine this image of bacteria cells.
3D image of probiotic bacterial cells
Which of the following statements best describes a mutualistic relationship between human health and certain types of bacteria?
Group of answer choices
Intestinal bacteria obtain nutrients from the gut and aid in human digestion.
Bacteria in improperly prepared food are consumed by humans, causing food poisoning.
Humans treat infections with antibacterial medication, which bacteria become resistant to.
Invasive bacteria in an area of injury produce toxins that damage healthy tissues of the human body.
Flag question: Question 5
Question 51 pts
(06.01 MC)
A student cuts her hand during her gym class. The next day the cut is red and inflamed. What is the likely cause?
Group of answer choices
Antibiotic resistance near the cut
Regression of bacteria numbers
Antibiotic skin adherence
Immune response to bacterial toxins
Flag question: Question 6
Question 61 pts
(06.01 MC)
How are antibiotics able to target the bacteria cells but not the healthy cells within your body?
Group of answer choices
Antibiotics target cells based on the morphology.
Antibiotics target special protein and lipid receptors on the cell walls of bacteria.
Antibiotics target cells with chemical and UV damage.
Healthy cells lack the endospores that antibiotics target.
Flag question: Question 7
Question 71 pts
(06.01 MC)
Some animals that are scavengers can eat bacteria-laden meat that would harm humans. Which of the following best explains why these bacteria would harm a human, but not a scavenger?
Group of answer choices
The scavenger's immune system is strong enough to fight off bacterial infections before it produces toxins and damages tissues.
Only human cells have the complementary receptors that bind to surface molecules found on the bacteria.
Antibodies found in the blood of the scavenger destroy the bacteria as soon as they enter the bloodstream.
The pH and temperature environment in the human encourages more bacterial growth and colonization.
Flag question: Question 8
Question 81 pts
(06.02 MC)
The image displays a structure of fungi. Which of the following best describes the function of the structure displayed in the image below?
The image shows a microscopic view of numerous hyphae of a fungus.
Group of answer choices
Spore production
Food absorption
Sexual reproduction
Asexual reproduction
Flag question: Question 9
Question 91 pts
(06.02 MC)
Which characteristic could help you distinguish between types of fungi?
Group of answer choices
The spores made by the fungi
The color of the fungi
The growing location of the fungi
The shape of the fruiting bodies on the fungi
Flag question: Question 10
Question 101 pts
(06.02 MC)
Which scenario describes a mutually beneficial relationship with fungi in an ecosystem?
Group of answer choices
Fungus growing inside an anthill
Fungus growing on the leaves of plants
Fungus used as food for human consumption
Fungus used to make medications for humans
Answers
Answered by
GPT-4o mini
Here are the likely answers to your questions based on the provided choices:
### Question 1
**According to the phylogenetic tree, which domains are more genetically related?**
**Group of answer choices:**
- **Eukarya and Archaea**
- Eukarya and Bacteria
- Plants and Animals
- Bacteria and Archaea
**Answer:** Eukarya and Archaea (Eukarya and Archaea share a more recent common ancestor compared to Bacteria.)
### Question 2
**Which molecules are distinctively different in Bacteria and Archaea?**
**Group of answer choices:**
- **RNA polymerases**
- Fatty acids
- Transcription DNA
- Transfer DNA
**Answer:** RNA polymerases (Bacteria and Archaea have different types of RNA polymerases; Archaea are more similar to eukaryotes.)
### Question 3
**What is the function of the structure identified by the arrow?**
**Group of answer choices:**
- Mobility
- Protection
- Reproduction
- **DNA transfer**
**Answer:** DNA transfer (The long tail-like projections are likely pili, which facilitate the transfer of genetic material between bacteria.)
### Question 4
**Which of the following statements best describes a mutualistic relationship between human health and certain types of bacteria?**
**Group of answer choices:**
- **Intestinal bacteria obtain nutrients from the gut and aid in human digestion.**
- Bacteria in improperly prepared food are consumed by humans, causing food poisoning.
- Humans treat infections with antibacterial medication, which bacteria become resistant to.
- Invasive bacteria in an area of injury produce toxins that damage healthy tissues of the human body.
**Answer:** Intestinal bacteria obtain nutrients from the gut and aid in human digestion. (This describes a mutualistic relationship.)
### Question 5
**A student cuts her hand during her gym class. The next day the cut is red and inflamed. What is the likely cause?**
**Group of answer choices:**
- Antibiotic resistance near the cut
- Regression of bacteria numbers
- Antibiotic skin adherence
- **Immune response to bacterial toxins**
**Answer:** Immune response to bacterial toxins (The inflammation is typically a response from the immune system to infection or irritation.)
### Question 6
**How are antibiotics able to target the bacterial cells but not the healthy cells within your body?**
**Group of answer choices:**
- Antibiotics target cells based on the morphology.
- **Antibiotics target special protein and lipid receptors on the cell walls of bacteria.**
- Antibiotics target cells with chemical and UV damage.
- Healthy cells lack the endospores that antibiotics target.
**Answer:** Antibiotics target special protein and lipid receptors on the cell walls of bacteria. (Bacterial cells have unique components that are not present in human cells.)
### Question 7
**Which of the following best explains why these bacteria would harm a human, but not a scavenger?**
**Group of answer choices:**
- **The scavenger's immune system is strong enough to fight off bacterial infections before it produces toxins and damages tissues.**
- Only human cells have the complementary receptors that bind to surface molecules found on the bacteria.
- Antibodies found in the blood of the scavenger destroy the bacteria as soon as they enter the bloodstream.
- The pH and temperature environment in the human encourages more bacterial growth and colonization.
**Answer:** The scavenger's immune system is strong enough to fight off bacterial infections before it produces toxins and damages tissues. (This highlights a potential difference in immune system efficacy).
### Question 8
**Which of the following best describes the function of the structure displayed in the image below?**
**Group of answer choices:**
- Spore production
- **Food absorption**
- Sexual reproduction
- Asexual reproduction
**Answer:** Food absorption (Hyphae primarily function in nutrient absorption in fungi.)
### Question 9
**Which characteristic could help you distinguish between types of fungi?**
**Group of answer choices:**
- **The spores made by the fungi**
- The color of the fungi
- The growing location of the fungi
- The shape of the fruiting bodies on the fungi
**Answer:** The spores made by the fungi (Different fungi produce different types of spores that can be used for classification.)
### Question 10
**Which scenario describes a mutually beneficial relationship with fungi in an ecosystem?**
**Group of answer choices:**
- **Fungus growing inside an anthill**
- Fungus growing on the leaves of plants
- Fungus used as food for human consumption
- Fungus used to make medications for humans
**Answer:** Fungus growing inside an anthill (This scenario often reflects a mutualistic relationship where both organisms benefit from each other's presence.)
Feel free to reach out if you have more questions or need further assistance!
### Question 1
**According to the phylogenetic tree, which domains are more genetically related?**
**Group of answer choices:**
- **Eukarya and Archaea**
- Eukarya and Bacteria
- Plants and Animals
- Bacteria and Archaea
**Answer:** Eukarya and Archaea (Eukarya and Archaea share a more recent common ancestor compared to Bacteria.)
### Question 2
**Which molecules are distinctively different in Bacteria and Archaea?**
**Group of answer choices:**
- **RNA polymerases**
- Fatty acids
- Transcription DNA
- Transfer DNA
**Answer:** RNA polymerases (Bacteria and Archaea have different types of RNA polymerases; Archaea are more similar to eukaryotes.)
### Question 3
**What is the function of the structure identified by the arrow?**
**Group of answer choices:**
- Mobility
- Protection
- Reproduction
- **DNA transfer**
**Answer:** DNA transfer (The long tail-like projections are likely pili, which facilitate the transfer of genetic material between bacteria.)
### Question 4
**Which of the following statements best describes a mutualistic relationship between human health and certain types of bacteria?**
**Group of answer choices:**
- **Intestinal bacteria obtain nutrients from the gut and aid in human digestion.**
- Bacteria in improperly prepared food are consumed by humans, causing food poisoning.
- Humans treat infections with antibacterial medication, which bacteria become resistant to.
- Invasive bacteria in an area of injury produce toxins that damage healthy tissues of the human body.
**Answer:** Intestinal bacteria obtain nutrients from the gut and aid in human digestion. (This describes a mutualistic relationship.)
### Question 5
**A student cuts her hand during her gym class. The next day the cut is red and inflamed. What is the likely cause?**
**Group of answer choices:**
- Antibiotic resistance near the cut
- Regression of bacteria numbers
- Antibiotic skin adherence
- **Immune response to bacterial toxins**
**Answer:** Immune response to bacterial toxins (The inflammation is typically a response from the immune system to infection or irritation.)
### Question 6
**How are antibiotics able to target the bacterial cells but not the healthy cells within your body?**
**Group of answer choices:**
- Antibiotics target cells based on the morphology.
- **Antibiotics target special protein and lipid receptors on the cell walls of bacteria.**
- Antibiotics target cells with chemical and UV damage.
- Healthy cells lack the endospores that antibiotics target.
**Answer:** Antibiotics target special protein and lipid receptors on the cell walls of bacteria. (Bacterial cells have unique components that are not present in human cells.)
### Question 7
**Which of the following best explains why these bacteria would harm a human, but not a scavenger?**
**Group of answer choices:**
- **The scavenger's immune system is strong enough to fight off bacterial infections before it produces toxins and damages tissues.**
- Only human cells have the complementary receptors that bind to surface molecules found on the bacteria.
- Antibodies found in the blood of the scavenger destroy the bacteria as soon as they enter the bloodstream.
- The pH and temperature environment in the human encourages more bacterial growth and colonization.
**Answer:** The scavenger's immune system is strong enough to fight off bacterial infections before it produces toxins and damages tissues. (This highlights a potential difference in immune system efficacy).
### Question 8
**Which of the following best describes the function of the structure displayed in the image below?**
**Group of answer choices:**
- Spore production
- **Food absorption**
- Sexual reproduction
- Asexual reproduction
**Answer:** Food absorption (Hyphae primarily function in nutrient absorption in fungi.)
### Question 9
**Which characteristic could help you distinguish between types of fungi?**
**Group of answer choices:**
- **The spores made by the fungi**
- The color of the fungi
- The growing location of the fungi
- The shape of the fruiting bodies on the fungi
**Answer:** The spores made by the fungi (Different fungi produce different types of spores that can be used for classification.)
### Question 10
**Which scenario describes a mutually beneficial relationship with fungi in an ecosystem?**
**Group of answer choices:**
- **Fungus growing inside an anthill**
- Fungus growing on the leaves of plants
- Fungus used as food for human consumption
- Fungus used to make medications for humans
**Answer:** Fungus growing inside an anthill (This scenario often reflects a mutualistic relationship where both organisms benefit from each other's presence.)
Feel free to reach out if you have more questions or need further assistance!