Question: Mitochondria are structures in our cells that supply our cells with chemical energy. Which of the following is a true statement about mitochondria and DNA?
Mitochondria are structures in our cells that supply our cells with chemical energy. Which of the following is a true statement about mitochondria and DNA? Answer Options: Mitochondria do not contain any of their own DNA. The nucleus has all the DNA in the cell and that DNA stores all the information needed to make all other parts of the cell, including the mitochondria. Like the reproductive cells (ova and sperm), our mitochondria have one copy of each of our 23 chromosomes. Like the nucleus, our mitochondria have two copies of each of our chromosomes. Mitochondria have their own DNA, which is inherited through the female line. That means that our mitochondrial DNA comes from our biological mother (a category that could include an egg donor or other parent who was assigned female at birth but no longer identifies as a woman). Correct Answer: Mitochondria have their own DNA, which is inherited through the female line. That means that our mitochondrial DNA comes from our biological mother (a category that could include an egg donor or other parent who was assigned female at birth but no longer identifies as a woman).
Question: Which of the following options lists the steps of insulin production in the correct order?
Which of the following options lists the steps of insulin production in the correct order? Answer Options: Insulin is purified, dried, and packaged; Human insulin gene is cloned; Recombinant microbe is grown in a fermentation tank. Recombinant microbe is grown in a fermentation tank; Human insulin gene is cloned; Insulin is purified, dried, and packaged. Human insulin gene is cloned; Recombinant microbe is grown in a fermentation tank; Insulin is purified, dried, and packaged. Recombinant microbe is grown in a fermentation tank; Insulin is purified, dried, and packaged; Human insulin gene is cloned. Correct Answer: Human insulin gene is cloned; Recombinant microbe is grown in a fermentation tank; Insulin is purified, dried, and packaged.
Question: In the video “Why are biohackers trying to make homemade insulin?”, why are they trying to make homemade insulin?
In the video “Why are biohackers trying to make homemade insulin?”, why are they trying to make homemade insulin? Answer Options: They are competing in an international competition to be the first to do it. Companies have drastically cut back on how much insulin they’re producing. It is a project for the science fair. The cost of insulin increased rapidly, making it much harder for some Type 1 diabetics to afford. Correct Answer: The cost of insulin increased rapidly, making it much harder for some Type 1 diabetics to afford.
Question: (Cheesemaking and chymosin): “Fermentation-produced chymosin is an example of a product made by recombinant DNA technology.” The preceding statement is…
(Cheesemaking and chymosin): “Fermentation-produced chymosin is an example of a product made by recombinant DNA technology.” The preceding statement is… Answer Options: True False Correct Answer: True
Question: (Cheesemaking and chymosin): “FPC can be purified so that no detectable trace of the production organism remains in the final product.” The preceding statement is…
(Cheesemaking and chymosin): “FPC can be purified so that no detectable trace of the production organism remains in the final product.” The preceding statement is… Answer Options: True False Correct Answer: True
Question: “All bacteria are bad, because they are germs that cause disease.” The preceding statement is…
“All bacteria are bad, because they are germs that cause disease.” The preceding statement is… Answer Options: True False Correct Answer: False
Question: “One way that scientists identify which bacteria are in a particular environment is to look at their DNA sequence.” The preceding statement is…
“One way that scientists identify which bacteria are in a particular environment is to look at their DNA sequence.” The preceding statement is… Answer Options: True False Correct Answer: True
Question: “The DNA in the human genome is about 99.9% the same from human to human. However, the microbes in the gut of those same two humans might only be about 10% the same.” The preceding statement is…
“The DNA in the human genome is about 99.9% the same from human to human. However, the microbes in the gut of those same two humans might only be about 10% the same.” The preceding statement is… Answer Options: True False Correct Answer: True
Question: When and how do we humans first get covered in the microbes that become part of our early microbiome?
When and how do we humans first get covered in the microbes that become part of our early microbiome? Answer Options: We first get covered in microbes when we take our first bath. Our microbiome develops while we are fetuses inside our birth mothers, which is why newborn babies who were born vaginally have the same microbiome as babies born via C-section (surgical incision in the belly of the mother). We first get covered in microbes during the birthing process. We first get covered in microbes when we begin to wear diapers, which allow microbes from our feces to spread upwards. Correct Answer: We first get covered in microbes during the birthing process.
Question: How does the genetic diversity of bacteria, as a group, compare to that of animals?
How does the genetic diversity of bacteria, as a group, compare to that of animals? Answer Options: Bacteria as a group are less diverse than animals, because they have had less time to evolve. Bacteria as a group have about the same diversity as do animals – there are about as many different types of bacteria as there are animals. Bacteria as a group are more genetically diverse than are animals, which we can tell by looking at the length of the branches on the phylogenetic tree. Bacteria vary genetically only a little bit from one another. We can see this under a microscope, because they are all very small. On the other hand, animals can vary from being as small as a flea to as large as a blue whale so must be much more diverse at the genetic level. Correct Answer: Bacteria as a group are more genetically diverse than are animals, which we can tell by looking at the length of the branches on the phylogenetic tree.
Question: “Unlike eukaryotic cells, like those of animals and plants, bacterial cells do not have a nucleus in which to store their genome.” The preceding statement is…
“Unlike eukaryotic cells, like those of animals and plants, bacterial cells do not have a nucleus in which to store their genome.” The preceding statement is… Answer Options: True False Correct Answer: True
Question: “Because bacteria are all single-celled organisms, they all have the same shape.” The preceding statement is…
“Because bacteria are all single-celled organisms, they all have the same shape.” The preceding statement is… Answer Options: True False Correct Answer: False
Question: Which of the following statements about Gram-negative bacteria is NOT correct?
Which of the following statements about Gram-negative bacteria is NOT correct? Answer Options: They stain pink in the Gram stain. They have two cell membranes. They have a thicker layer of peptidoglycan in their cell walls than do Gram-positive cells. Correct Answer: They have a thicker layer of peptidoglycan in their cell walls than do Gram-positive cells.
Question: Which of the following traits make bacteria good for mass production of biotechnology products? Select ALL that apply.
Which of the following traits make bacteria good for mass production of biotechnology products? Select ALL that apply. Answer Options: They have mitochondria to help them make energy. They can be stored at -80 degrees C for long periods of time and remain alive, making them easy to maintain. They are small and so do not take up much space. They grow quickly. Correct Answer: They can be stored at -80 degrees C for long periods of time and remain alive, making them easy to maintain. They are small and so do not take up much space. They grow quickly.
Question: How do bacteria divide (i.e., how do they make new bacterial cells)?
How do bacteria divide (i.e., how do they make new bacterial cells)? Answer Options: A bacterial cell splits into two, in a process called binary fission. Two bacterial cells fuse, then separate into 4 individual cells. Two bacterial cells mate, resulting in the formation of a fertilized cell. A bacterial cell splits into two, in a process known as mitosis. Correct Answer: A bacterial cell splits into two, in a process called binary fission.
Question: A movement to eat food grown locally and organically within a defined radius may be referred to as _____.
A movement to eat food grown locally and organically within a defined radius may be referred to as _____. Correct Answer: 100 Mile Diet
Question: A healthy eating pattern includes alcohol in moderation, meaning no more than ____ drink per day for women and ____ drinks per day for men.
A healthy eating pattern includes alcohol in moderation, meaning no more than ____ drink per day for women and ____ drinks per day for men. Correct Answer: 1 and 2
Question: ______ are areas or regions where people have historically had lower rates of disease and lived longer than the average life span.
______ are areas or regions where people have historically had lower rates of disease and lived longer than the average life span. Correct Answer: Blue Zones
Question: Gardening, woodwork, walking the dog, and cleaning the house are all examples of this “secret” to longevity.
Gardening, woodwork, walking the dog, and cleaning the house are all examples of this “secret” to longevity. Correct Answer: Moving naturally