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Tag Archives: Bacteria

WORTH 15 FOR 2 EASY QUESTIONS MULTIPLE CHOICE SECOND QUESTIONS EVEN EASIER THAN THE FIRST IM PRETTY SURE THE ANSWER IS C JUST CHECKING Which of the following conditions would likely prevent the assembly and survival of new kinds of organic molecules on Earth today? A. the presence of bacteria and other life forms B. the presence of carbon dioxide C. the supply of atoms that serve as raw material D. the light and warmth from the sun 2. Several different species make up a A. family. B. genus. C. kingdom. D. phylum.

Answer: The integumentary system covers the surface of the body is true about the integumentry system. Explanation: The integumentary system includes the skin, nails, glands, hairs, and nerves. Its main role is to act as a barrier to protect the body from the outside environment. It also retains body fluids, …

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What is thought to be true about the three domains of living things? A. They diverged from a common ancestor before the evolution of the main groups of eukaryotes. B. They diverged from a common ancestor fairly recently. C. They did not have a common ancestor. D. Domains Bacteria and Archaea evolved after the main groups of eukaryotes.

There are two systems in the human body that are responsible for the coordination between the functions of different systems to achieve the unity of the living organism’s body. These two systems are the nervous system and the endocrine system. The action of the nervous system is fast and takes …

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A colony of bacteria is growing exponentially according to the function below where t is in hours. about how many will it take for the population to reach 100

A colony of bacteria is growing exponentially according to the function below where t is in hours. about how many will it take for the population to reach 100

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Which of the following aren’t eukaryotes? plants bacteria animals fungi

In tropical rain forest, the animals will have to deal with higher temperatures and greater rainfall. One example of an adaptation they might need is a thin, water-proof coat. This will prevent heat from becoming trapped inside their fur/hair/feathers, and the water-absorbing coating will allow water to stick to the …

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Why plants have specialized organelles animals and bacteria do not. Do those organelles serve a special function not needed in the other organisms?

Answer: The correct answer is all of these. Explanation: Organic compounds are defined as the chemical compounds where one or more carbon atoms are covalently bonded to other atoms of hydrogen, oxygen or nitrogen. They occur naturally in nature and the main sources of these organic compounds are petroleum, coal …

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Bacterial colonies can triple in size every 4 days. if you start with 150 bacteria microorganisms, how large would the colony be after 16 days?

Answer: 3 hours.           Step-by-step explanation: Let x be the time taken by shoe repairman to repair one pair. We have been given that his assistant, who takes twice as long to repair a pair of shoes. So time taken by his assistant to repair one …

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Calcium is required for bacteria because it

Vitamin K is a fat-soluble vitamin that is synthesized by intestinal bacteria. Further Explanation: Vitamin is essential nutrient present in our body to support the important function of the body. Vitamins are divided into two categories;    ⦁ Water-soluble vitamins    ⦁ Fat-soluble vitamins Vitamin B family and vitamin C …

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Bacteria reproduce asexually, whereas most plants and animals reproduce sexually. Which is the better method?

In tropical rain forest, the animals will have to deal with higher temperatures and greater rainfall. One example of an adaptation they might need is a thin, water-proof coat. This will prevent heat from becoming trapped inside their fur/hair/feathers, and the water-absorbing coating will allow water to stick to the …

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A bacterial culture grown in a glucose-peptide medium causes the ph to increase. the bacteria are most likely fermenting the glucose. oxidizing the glucose. using the peptides. not growing.

The correct answer to this would be: “inability of many medium ground finches to feed on large, hard seeds” The medium ground finches feed on seeds. However, the birds have two variations in the bill shape: some birds have wide, deep bills while others have thinner bills. The large-billed birds …

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You discovered a unicellular organism that lacks a nucleus and peptidoglycan. you suspect the organism is in the group animalia. archaea. bacteria. fungi. plantae.

Answer: The integumentary system covers the surface of the body is true about the integumentry system. Explanation: The integumentary system includes the skin, nails, glands, hairs, and nerves. Its main role is to act as a barrier to protect the body from the outside environment. It also retains body fluids, …

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A culture started with 5000 bacteria. after 2 hours, it grew to 6500 bacteria. Predict how many bacteria will be present after 18 hrs

Answer: 3 hours.           Step-by-step explanation: Let x be the time taken by shoe repairman to repair one pair. We have been given that his assistant, who takes twice as long to repair a pair of shoes. So time taken by his assistant to repair one …

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A lab technician needs to clean medical instruments that have been exposed to bacteria. Which electromagnetic wave would be most useful for this task? A ) infrared B ) radio C) ultraviolet D) microwave

A lab technician needs to clean medical instruments that have been exposed to bacteria. Which electromagnetic wave would be most useful for this task? A ) infrared B ) radio C) ultraviolet D) microwave

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A change in a sequence of DNA bases in a bacterial cell has resulted in a mutation. This mutation has increased the ability of the bacteria to break down and digest organic molecules in the environment. Bacteria with this mutation are better able to find and utilize food sources. According to the theory of natural selection, what is MOST likely to occur in future generations of this bacteria? A) The relative frequency of the mutation will increase as time passes. B) Because the mutation has changed the DNA of the bacteria, a new species will be formed. C) Because the mutation is abnormal, the mutation will become more rare with every passing generation. D) Bacteria with the mutation will increase in number until the food supply is exhausted, causing the bacteria to become extinct.

Answer: The correct answer would be B. CO, which comes from fossil fuel–powered engines, such as cars. As the name suggests the primary pollutant is defined as the pollutant emitted directly from the source. For example, carbon monoxide which is produced due to incomplete combustion is emitted directly from cars, …

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How are bacteria beneficial to the body? a. they provide us with needed nutrients c. they invade sterile regions in our body b. they form biofilms d. they fight the immune system

The synthesis of protein takes place in two basic steps: transcription and translation. At the time of transcription, the information encrypted in DNA is reproduced in mRNA and the mRNA moves out of the cell’s nucleus into the cytoplasm. After this the process of protein synthesis, that is, translation takes …

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A scientist counts 25 bacteria present in a culture and finds that the number of bacteria triples each hour. The function y = 25 ∙ 3x models the number of bacteria after x hours. Estimate when there will be about 1170 bacteria in the culture

A scientist counts 25 bacteria present in a culture and finds that the number of bacteria triples each hour. The function y = 25 ∙ 3x models the number of bacteria after x hours. Estimate when there will be about 1170 bacteria in the culture

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Archaea are different from bacteria in that Archaea

Ans. Pathogens can be defined as infectious agents that cause illness or diseases to their host organisms. Pathogens can be virus, bacteria, worms, fungi, or protozoa. All pathogens have potential to cause disease and they can be fatal that cause life-threatening diseases, such as Ebola virus. Pathogens can be treated …

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In a recent experiment, anti-bacterial hand sanitizer was compared to hand soap. Students washed their hands using the sanitizer or soap and warm water for two minutes; then they dried their hands with a paper towel. The standard of comparison was rubbing hands vigorously for 2 minutes in warm water, without any soap or sanitizer, and then drying with a paper towel. The sanitizer advertisement claimed to kill bacteria more effectively than any soap. After washing, hands were swabbed and then the swab applied to a culture plate and incubated. Finally, the bacterial cultures were counted and recorded in the data table. Students concluded that the hand sanitizer was most effective in killing bacteria. How would you respond to the students’ conclusion?

Answer: The correct answer is option D. Explanation: All these processes are the physical processes which happen during the phase change of matter. 1. Melting: In this process, water changes its state from solid to liquid. In solid, particles were orderly arranged but in liquid, the particles went apart from …

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is to keep infectious microorganisms, such as certain bacteria, viruses, and fungi, out of the body, and to destroy any infectious microorganisms that do invade the body.

is to keep infectious microorganisms, such as certain bacteria, viruses, and fungi, out of the body, and to destroy any infectious microorganisms that do invade the body.

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