题目The Secrets of Smell From humans to bacteria,smell is universal.Animals use it to perform remarkable activities:birds to travel across continents,and to recognize their own eggs;mice to detect stress in their partners,and we already know that smell can awaken memories in humans....
What might be causing that difference remains a mystery, though bacteria are known to be affected by their environment. Understanding how bacterial genes and their expression levels differ in humans could allow researchers to search for laboratory conditions that better mimic the human conditions—and ...
Some are highly pathogenic, while others are beneficial to humans.Answer and Explanation: Most bacteria are helpful. There are relatively few strains of bacteria that are pathogenic, or harmful. Ways that bacteria can be helpful include the...Become a member and unlock all Study Answers Try it ...
Describe how bacteria can be used as protein factories to produce human proteins. Protein: Protein is an essential nutrient required for a healthy diet. They are made from amino acids. They are found throughout the body in muscle, hair, bone, and skin. Fibrous, membrane, and...
Like other species, we are the products of millions of years of adaptation. Now we're taking matters into our own hands.
Like other living things, most bacteria(细菌) need water to live. Salt takes in plenty of water, so most bacteria can’t live in a salty environment. Therefore, salt protects food and many other things. For much of humans history, this ability has made salt valuable. Every ancient culture...
[02:20.24]The researchers added useful bacteria and nutrients. [02:24.48]They also controlled the gases, [02:27.48]temperature and humidity inside the greenhouse [02:31.32]to match conditions expected in a Martian greenhouse. [...
Why Do Dogs Sleep So Much? 5 Vet-Reviewed Reasons ByRachael Gerkensmeyer Vet approved byDr. Luqman Best Spot to Pet a Bearded Dragon: A Quick Vet-Verified Guide ByKristin Hitchcock We are here to help. Simply schedule an appointment by clicking on the button below. ...
If your infection is mild, you may not even know you've come into contact withP. aeruginosa. You may not show any symptoms or need treatment. Your immune system could manage to get rid of the bacteria without any extra help. If you do have symptoms but are otherwise healthy, antibiotics...
may become pathogenic. Plasmid DNA may also be taken up by competent bacteria and confer new properties to the cell. Overall, transformation in nature is a relatively inefficient process because environmental DNA levels are low because of the activity of nucleases that are also released during cellu...