it’s food i have to have 20 characters so
Answer:
Pet keeping wasn't generally accepted in Europe until the end of the 17th century, and it wasn't common among the middle classes until the late 18th century. Pet keeping in its present form is probably a 19th century Victorian invention. At this time, it was perceived as a link with the natural world, which itself was no longer seen as threatening. It also allowed a visible demonstration of man's domination over nature.
In present-day societies, dogs have a number of functional roles, from ornamental to status symbol, as helpers, and as companions. Dogs can also act as a channel for personal expression because people express their personality in the breed they own. For example, rare breeds are often used as indicators of status. Guide dogs for blind people and hearing dogs for deaf people are examples of pets who are kept as helpers.
But the most common reason for owning pets in Western societies is companionship. In recent years, there's been a growing awareness of the very positive effects this relationship can have on human health and psychological well-being, and a recognition of the therapeutic value of companion animals.
Answer:
Streptomycin and Erythromycine.
<u>Streptomycin:</u> inhibit protein synthesis by combining irreversibly with 30s subunit mRNA.Thus the normal synthetic sequences is disrupted.
Streptomycin does not stop protein synthesis in eukaryotic cells because it does not bind to eukaryotic ribosomes.
<u>Erythromycine:T</u>he Erythromycine inhibits protein synthesis through interference with the binding 50s subunit ribosome.
Erythromycin does not estop protien synthesis in eukaryotic cells because it does not binds to eukaryotic ribosome.Specificity towards prokaryotes relies upon the absence of 50S ribosomes in eukaryotes.
Antibiotics block processes that occur in prokaryotic cells but not in eukaryotic cells that's why they not affect ekaryotes.
Explanation:
Antibiotics are simply chemicals that kill prokaryotic cells but do not harm eukaryotic cells. They are natural chemicals produced by fungi and bacteria that act to control their bacterial competitors.
Antibiotics block processes that occur in prokaryotic cells but not in eukaryotic cells that's why they not affect eukaryotes.
There are different classes of antibiotics inhibit different steps of prokaryotic life cycle.
<u>Streptomycin and Erythromycin </u>are group of antibiotics that inhibit protein synthesis of bacteria.They are specifically effective against prokaryotes does not inhibit protien synthesis of eukaryotes.
Insulin and glucagon are hormones that help regulate the levels of blood glucose, or sugar, in your body. Glucose, which comes from the food you eat, moves through your bloodstream to help fuel your body.
Insulin and glucagon work together to balance your blood sugar levels, keeping them in the narrow range that your body requires. These hormones are like the yin and yang of blood glucose maintenance. Read on to learn more about how they function and what can happen when they don’t work well.
Answer: The correct answer is A
Explanation:
This because in space there is microgravity I.e absence or less gravity, the astronaut do not need to do much work, just to sleep, eat and go around. In microgravity the muscles are prone to atropy( respons e to gravity) which causes the muscle to be stiffen and straighten out, the muscles becomes weak.
