Answer:
Discovered penicillin
Explanation:
Alexander Fleming accidentally discovered penicillin in 1928. He left dirty petri dishes in his laboratory. When he did clean them, he discovered a mold growth, and around this mold, no bacteria were present. There were bacteria in other regions, but none around the growth. He then knew that he discovered an antibiotic: penicillin.
He received the Nobel Prize in Physiology or Medicine in 1945 for his findings. Today, penicillin is used to fight bacterial infections such as pneumonia.
What is the bodys response to the stimulus of getting overheated?
A. Sweating and thirst.
B. Shivering and hunger.
C. Sweating and shivering.
D. Shivering and thirst.
Answer:
Sweating and thirst, I think!
Explanation:
When you are too hot, your body will sweat to cool you down. There will be less water in your body because the heat will dry it and you will be sweating, so you'll be thirsty.
Someone help with me this :/
PLZ Help
How can you connect these words to say how they are related:
Parasitism and Recessive Trait
Answer:
Here are the definitions so myabe you can write them together yourself!
Explanation:
Parasitism - noun
Biology. a relation between organisms in which one lives as a parasite on another.
a parasitic mode of life or existence.
Pathology. a diseased condition due to parasites.
(in some totalitarian countries)
unemployment or refusal to work.
employment in work considered nonessential by the state.
Recessive - adjective
tending to go, move, or slant back; receding.
Genetics. of or relating to a recessive.
Phonetics. (of an accent) showing a tendency to recede from the end toward the beginning of a word.
noun Genetics.
that one of a pair of alternative alleles whose effect is masked by the activity of the second when both are present in the same cell or organism.
the trait or character determined by such an allele.
1 It is hard to imagine how big a billion is. A billion is 1 000 000 000 (or one thousand
million). There are 1 000 millimetres in 1 metre and 1 000 metres in 1 kilometre.
How many millimetres are in 1 kilometre?
Answer:
100000
Explanation:
multiply the length value by 1e+6
Do you consider that “movement” is a characteristic of living beings? Do all living things move? Why?
Which statements explain how ponds and lakes differ? Select two options.
Ponds are shallower than lakes.
Ponds are larger than lakes.
Pond water moves more than lake water.
Lakes have more plants at the bottom than ponds.
Lakes are colder and darker at the bottom than ponds.
Answer:
A. ponds are shallower than lakes
E. lakes are colder and darker at the bottom than ponds
Answer:
1. A - Ponds are shallower than lakes
2. E - Lakes are colder and darkey at the bottom than lakes
Explanation:
I did the test
Which term is correct for one female arctic fox? biome species ecosystem organism
Answer:
D.) Organism
Explanation:
On the basis of biological organization, one female arctic fox will be considered as an organism.
Biological organization refers to a hierarchy starts from simplest biological structure to complex biological structures that define life, such as from atoms to biosphere.
So, biome is the community of animals and plants having common characteristics according to the environment; species is also a group of living organism sharing similar genes; ecosystem include different groups with the physical (abiotic) environment and organism is the basic living system,that include at least one cell.
So, one female arctic fox will be termed as an organism and the correct option is D.
Answer:
D.) Organism
Explanation:
I jus got it right
The natural greenhouse effect is important to life on Earth because
A. Earth would be too hot without the natural greenhouse effect
B. Earth would be too cold without the natural greenhouse effect
C. there would be no atmosphere without the natural greenhouse effect
D. all of the above
Answer:
B
Earth would be too cold without the greenhouse effect
Explanation:
It has often been said that the next dominant animals on land, after a hypothetical demise of all mammals, would be the insects. Why so?
Explanation:
The animals that dominate the Earth today are the human species or Homo sapiens. Many factors have allowed the species to dominate the Earth-like use of new tools, vocal cords, and an increased sense of intellect and natural intelligence. But today we can observe the social wars, epidemic, and harm to our planet which could result in the extinction of humans.
The scientist has hypothesized that after the Homo sapiens, new dominating species will be insects as this group of the organism has:
1. Survived many mass extinctions.
2. are highly adaptable to extreme conditions.
3. Has evolved many adaptive features to protect itself from prey like a tough exoskeleton, few to many legs, bombarding in few species when someone tries to eat it, and many others.
Plant cells have large, round vacuoles they primarily use for -
A) water storage
B) energy production.
C) protein synthesis.
D) waster removal
Answer: the answer is water storage
Explanation: i just got it right
What is the name of a group of connected and related organisms?
O A. Energy
B. Matter
O C. Flow
O D. System
Answer:
D. System
Explanation:
Energy isn't an organism.
Matter is what everything physical is made of.
Flow doesn't apply here.
System is the name of group of connected and related organisms.
What is system in organization of life?A system pertains to interdependent or interrelated objects comprising and functioning as a whole. In biology, it may refer to the biological or body systems. A biological system is a group of organs that work together to carry out a particular task.
A cell consists of three parts: the cell membrane, the nucleus, and, between the two, the cytoplasm. Within the cytoplasm lie intricate arrangements of fine fibers and hundreds or even thousands of miniscule but distinct structures called organelles.
A system is a group of organs that work together to perform a certain task. Common systems, such as those present in mammals and other animals, seen in human anatomy, are those such as the circulatory system.
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Describe the appearance of the mycobacterium on a plate. with what cell component does this correlate?
Answer:
The appearance of the mycobacterium is like rod shaped.
Explanation:
The structure of mycobacterium is rod liked and it is purple in color. The meaning of the word mycobacterium is fungus bacteria because it resembles with the fungus in its structure and appearance. Cell wall is the cell component which correlate with mycobacterium. The structure of cell wall is thick and made up of several layers of peptidoglycan which is formed from sugar and amino acid molecules.
How can you increase your knowledge on a topic or a given situation?
A) Guess and go with your gut.
B) Get opinions from your fellow associates.
C) There aren't any ways to increase your knowledge on a topic.
D) Discuss the topic with individuals considered "experts" on the topic.
Answer:
B because it's experts don't always know everything and it's good to communicate with people who might know it.
Get opinions from your fellow associates which help in increase your knowledge on a topic or a given situation. Thus option B is correct.
what is general knowledge ?
To get information, understanding, or skill that from experience or education or some one else is called as knowledge.
General knowledge is a broad field of gathering valuable information related to social interests, culture, civilization, community, or nation gathered from a various media platforms.
It is not under a specialized information on a specific topic; it is knowledge about every aspect of human life like current affairs, fashion, family, health, and the arts and sciences.
To gain general knowledge, it takes huge time and effort, intelligence, problem-solving, confidence, and open mindedness etc. It helps with personal growth, good citizenship, and a stronger society.
Thus option B is correct.
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Which is the most likely reason that stem cell research is controversial?
Stem cell research could lead to the development of human clones.
Many people assume that all human stem cells come from embryos.
Research by using stem cells results in high-priced treatments for disease.
Information that is obtained from stem cell research is considered unreliable.
Answer
Many people assume that all human stem cells come from embryos.
Explanation:
Not all stem cells are embryonic stem cells. In fact, a lot of stem cell type procedures come from stem cells in bone marrow. The controversy behind embryonic stem cells is that they come from aborted babies, which many don't agree with.
Answer:
B
Explanation:
What global phenomenon has caused some organisms to move towards the poles or to
higher altitudes?
When do the finches on the Galápagos Islands learn their songs? From whom do they learn their song?
Answer:
Like children learning to speak, little finches learn songs from their elders. ... They let the animals peck at a key, which caused a plastic father finch to "sing" them a recorded song, up to 28 seconds per day. The scientists then measured how the youngsters slowly approached perfect imitation.
Explanation:
What are 3 instruments used throughout history to observe the motion of the planets and starts
Answer:
Telescope, star chart, and lasers(light).
Explanation:
Omar often saw woodpeckers perched in trees in his backyard, but he never saw them at his bird feeders. Omar usually filled his feeders with sunflower seeds. He wondered if he could attract woodpeckers by adding a different type of food to the feeders.
To test this idea, Omar gathered eight identical bird feeders. He filled four with sunflower seeds. He filled the remaining four feeders with crushed peanuts. Omar then placed the bird feeders in his backyard. Over the next five days, he counted the number of woodpeckers that visited each bird feeder each morning.
Which of the following was an independent variable in this experiment?
Answer: The food
Explanation: the independent variable is the one to be changed and in this case, it is the food
What are greenhouse gasses? How does carbon dioxide enter the atmosphere? (Site 1)
Answer:
1. Greenhouse gases are compounds that are able to trap heat in the atmosphere, keeping the Earth's surface warmer than it would be if they were not present. These gases are mainly carbon dioxide; metahne, nitrous oxide, and flourinated gases.
2. Carbon dioxide enters the atmosphere from animals and plants through the process of respiration and the burning of fossil fuels from industries.
Answer:
The greenhouse effect is a natural phenomenon, which, helps maintain the relatively stable, livable, range of temperatures that we find on earth. To better understand how this phenomenon works, scientists have used the analogy of the greenhouse. In a greenhouse, the glass (the atmosphere) allows the radiant energy (light) of the sun to enter. As the radiant energy strikes various plants, gases, and objects in the greenhouse, they heat up. Their heat is then released back into the air of the greenhouse as infrared radiation (heat). This infrared radiation cannot travel through the glass and remains inside the greenhouse, increasing the temperature inside the greenhouse. Temperatures can be controlled, or kept in balance, by allowing some of the heat to remain inside and some to be vented to the outside. Under normal conditions, the earth's atmosphere works in a similar manner. Solar radiation enters the atmosphere and heats up the air molecules, the surface of the earth, buildings, plants, and other objects. These objects in turn, radiate infrared radiation back out into the atmosphere, where some of this radiation is absorbed by the greenhouse gases, and some is radiated out into space. As some of the heat stays in the atmosphere and some escapes into spaces, a balance is maintained allowing our planet to have a relatively stable range of temperatures. Scientists believe that as the greenhouse gases become more abundant in the atmosphere, due mainly to the burning of fossil fuels, they retain more and more infrared radiation, allowing less and less to escape into space, tipping the balance toward heating up the atmosphere, resulting in a changing and warmer climate, planet-wide. This is the accelerated greenhouse effect.
Explanation:
Which of the following environmental factors belongs to biotic factors? 1. Wind 2. Salinity 3. Soil moisture 4. Microorganism
Answer:
4. Microorganism
Explanation:
Wind, Salinity, Soil moisture are abiotic factors, non living things.
Pneumonia is a virus or a bacteria?
Answer: Both
Explanation:
How do new introduced species become established in a new ecosystem
Answer: If it can outcompete native species for resources such as nutrients, light, physical space, water, or food
Explanation:
Energy in this ecosystem passes directly from the sun to
A. Herbivores
B.consumers
C.heterotrophs
D. Autotrophs
Answer:
D. Autotrophs
Explanation:
Because the sun's energy is used in plants (Autotrophs) for photosynthesis.
Answer:
autotrophs
Explanation:
also called plants
So if the Moon's shadow is falling on the Earth during a solar eclipse, what phase of the moon must it be? (The moon is between the Earth and Sun.)
Answer:
New moon
Explanation:
A solar eclipse can only occur during New Moon (when the entire moon is covered in darkness and not visible from the earth's surface.) A total solar eclipse can be seen within the moon's dark inner shadow (called the umbra.) A partial solar eclipse can be observed within the earth's lighter outer shadow (called the penumbra).
Help me pleaseee :/ “ I need the answer ASAP
Answer: The answer is B
Explanation: Because it does not describe changes due to selective breeding.
Scientists often work together with other scientists. If you were working in a laboratory working together in a way that is effective, and help make sure that people got fair credit for their work? What is needed for people to work together in an effective way?
Answer:
Often in scientific work it is necessary to complement skills between researchers.
Explanation:
In research, it is imperative to work in collaboration with interdisciplinary groups of scientists. For example, geneticists work together with bioinformaticians to analyze how mutations may affect gene expression patterns in different tissues, cells, etc.
What is the difference between the axial skeleton and the appendicular skeleton?
A substance was added to a cell culture that inactivated the tRNA in the cell. Which is the best prediction of what will occur in this cell culture?
a.
Transcription will not occur.
b.
Ribosomes will not form.
c.
Amino acids will not form proteins.
d.
DNA will not be copied.
A scientist observed a phenotypic change in a mouse in her laboratory. This change was passed to the mouse’s offspring. What inference could the scientist make that would be supported by the observation?
a.
The phenotypic change is due to a mutation in a gamete.
b.
This mutation causes a disorder.
c.
This mutation has a positive impact on the mouse’s ability to survive.
d.
This mutation is the result of insertion of nucleotides.
Answer:
A
Explanation:
Mutations can occur in either cell type. If a gene is altered in a germ cell, the mutation is termed a germinal mutation. Because germ cells give rise to gametes, some gamete s will carry the mutation and it will be passed on to the next generation when the individual successfully mates.
Algae and coral have a mutualistic relationship. However, algae leave coral when the water is too warm. What kind of factor is temperature on
this relationship?
abiotic
commensalistic
biotic
parasitic
Answer:
parasitic
Explanation:
I got a 100 so im not cappin :)
Algae leave coral when the water is too warm. Temperature is a kind of abiotic factor in this relationship.
What do you mean by Mutualistic relationship?A Mutualistic relationship may be defined as when two organisms of different species work together, each benefiting from the relationship.
The temperature always remains an abiotic factor which is one of the important factors in the environment. Other abiotic factors are light, rainfall, fire, and winds.
Therefore, algae leave coral when the water is too warm. Temperature is a kind of abiotic factor in this relationship.
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