In 1964, Bell Labs scientists Arno Penzias and Robert A. Wilson were conducting experiments with the Holmdel Horn Antenna, an extremely sensitive device originally used to detect radio waves that were bounced off Echo balloon satellites, and later Telstar, the first active communications satellite. These radio waves were so weak, that it became critical to eliminate all possible interference in order to detect them.
Despite taking all conceivable steps to eliminate interference, they continually detected a strange, buzzing noise that was coming from all parts of the sky at all times of day and night. They did a range of additional testing on the equipment, and even removed some pigeons that were nesting in the antenna and their associate detritus. Still, the sound persisted. They ultimately determined that the noise was coming from outside of our galaxy
Almost by chance, they later learned that researchers and astrophysicists Robert H. Dicke, Jim Peebles and David Wilkinson at nearby Princeton University were looking for a way to detect residual radiation that they believed would have resulted from the Big Bang. As it turned out, the radiation detected by Penzias and Wilson was a perfect match for what the Princeton researchers had predicted, and hence made history.
Arno Penzias (left), Robert Wilson (center) and Keith Jefferts (right) look through a model of the universe to the constellation Orion where, for the first time, they discovered carbon monoxide in outer space.
From the archives
An audio recording of the CMBR noise was captured and narrated by Robert A. Wilson. This discovery in 1964 by Penzias and Wilson, announced in a Bell Labs press release, earned the researchers a Nobel Prize in Physics and provided the basis for future astronomical discoveries.
edit-ion think i read that right so this may be not be right but fun fact sorry
The main focus of conservation is to
a. wisely manage natural resources for people's use
b. set aside land and protect it from human activities
c. demand government action to pass environmental laws
d. prevent wild species from becoming endangered
e. limit society's demand for natural resources
Answer:
A.) Wisely manage natural resources for people's use
Explanation:
Because conservation is like preservation but conservation wants to seek sustainable use of nature by humans for activities such as, hunting, logging, and even mining.
The diagram below shows hydrogen bonds between water molecules.
What describes each hydrogen bond?
1. An attraction between neutral ends of two molecules.
2. An attraction between the positive end of one molecule and the negative end of another molecule.
3. An attraction between positive ends of two molecules.
4. An attraction between negative ends of two molecules.
hydrogen bonds between water molecules. An attraction between the positive end of one molecule and the negative end of another molecule describes each hydrogen bond.
What are the characteristics of water ?Water is amphoteric in nature because it serve as both acid and a base, highly viscous in nature due to the presence of a force of attraction between molecules.
Water is participate in Redox reaction as it help in release of dihydrogen molecules easily, the dielectric constant is also high, form the connections with other chemical compounds known as hydrates.
The temperature below 4 degrees Celsius the water ordinarily behaves, when it is cooled further, its unusual properties of water molecule are being observed.
During cooled condition, the density of water can also slowly increases and further cooled down leads to decrease in the density of water and the expansion of matter called as the anomalous property of water.
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individuals do not evolve.Populations evolve. True or False?
Answer: false
Explanation:
Individuals do not evolve as a result of natural selection over successive generations. Populations evolve ONLY as certain traits become more common and others go away.
Answer:
False
Explanation:
Singular living beings don't evolve, they hold similar qualities for an amazing duration. At the point when a populace is advancing, the proportion of various hereditary sorts is evolving. Hope this helps!
Sacchromyces is a type of yeast preferred by bakers because it grows very quickly. It makes large
numbers of clones in a very short amount of time. What property of yeast makes it grow in number so
rapidly?
meiotic division by sexual reproduction
binary fission by sexual reproduction
parthenogenetic asexual reproduction
budding through asexual reproduction
Answer:
d
Explanation:
The property of yeast makes it grow in number so rapidly because budding through asexual reproduction. Thus, option D is correct.
What is asexual reproduction?The mode of reproduction which involves only single parent is known as asexual mode of reproduction. The example of the asexual reproduction are several and these are budding, fragmentation, spore formation, and binary fission.
Reproduction will be defined as the process which has been carried out by the living organisms and during this process of reproduction the living organisms has been produced their own young ones as well as feed them. Reproduction has been known as the supreme quality of living things.There are mainly two types of the reproduction and these are sexual as well as asexual reproduction.
The process of the reproduction in which two parents are involved has been said to be sexual mode of the reproduction and the process of reproduction in which only single parent has been involved is known as asexual mode of reproduction. The example of asexual reproduction are budding, fragmentation, spore formation, and binary fission.
Therefore, the property of yeast makes it grow in number so rapidly because budding through asexual reproduction. Thus, option D is correct.
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what is the role of cuticle in upper and lower epidermis
Answer:
The cuticle is located outside the epidermis and protects against water loss; trichomes discourage predation. The mesophyll is found between the upper and lower epidermis; it aids in gas exchange and photosynthesis via chloroplasts.
Explanation:
thsis answer is not from google
What is the process of sea floor spreading?
Answer:
(See Below)
Explanation:
[1] Magma comes out of the rift valley.
[2] Magma cools to rock and hardens.
[3] Rock is pushed away as new rock is formed at MOR (Mid Ocean Ridges)
[4] Oceanic crust and continental crust meet at the trench.
[5] Oceanic crust bends down under the continental crust.
[6] Gravity pulls rock towards mantle.
[7] Rock melts to mantle.
Explanation:
Sea floor spreading is a process that occurs at mid ocean ridges,where new oceanic crust is formed through volcanic activity and then gradually moves away from the reach.
Which organelle transports material throughout the cell?
Cell Membrane
O Endoplasmic Reticulum
O Mitochdadria
O Lysosome
o
Answer:
lysosome I think.
Explanation:
The similar shapes of fast swimming marine predators are an example of:__________
Answer: convergent evolution
Explanation:
The similar shapes of fast swimming marine predators are an example of convergent evolution.
Convergent evolution shows how different species possess identical structures even though they evolve separately. Convergent evolution typically takes place with the organisms that are not really related.
An example of convergent evolution is the similarity that can be noticed in the wings or the flights of bats, birds, insects, etc
You will be researching a virus that infects humans, animals, or plants. If you are into history you may pull a virus that has occurred (like one of the flu pandemics) To share your research you will be creating a digital poster. You may use any type of poster program you like as long as it can be shared! You may also use google slides. I will provide a template for google slides (link will be here) if you need help getting started! To get full credit, your poster must include the following: At least 8 of these 10 items Name of virus Time span (is it currently out there infecting things? Is this from the past?) What it infects How does it spread? What are the symptoms? How dangerous is it? At least one relevant image (with a citation if you did not create the image) A description/caption for the image explaining the relevance How does it reproduce? (lytic or lysogenic) What are its viral relatives? Did it evolve from another known virus? AND A list of references all while using academic grammar and spelling! Post a link to your poster or upload your poster here in the Discussion Board. This discussion board will not be much of a discussion - it will be more of a sharing of work!
Answer:
yes
Explanation:
In what way would bacteria that require a pH of 11 for
growth respond to being placed in an environment with a
pH of 2?
Answer:
Explanation:
If the bacteria is required to be in highly basic conditions, putting it in highly acidic conditions would disrupt the internal functions of the bacteria which tends to kill the bacteria.
The way that bacteria that require a pH of 11 for growth respond, replaced in a pH of 2, will respond in the way: the bacteria must be in extremely basic circumstances, exposing it to excessively acidic settings will disturb its internal functions, eventually killing it.
What is pH?The optimum pH for bacterial growth may differ. Some bacteria, known as acidophiles, can thrive in an acidic environment, while others, known as alkalinizes, can grow in a base environment, and the remainder, known as neutrophils, can grow in a neutral pH environment.
Bacteria can keep their internal pH stable by creating acid, base, or buffer. If the surrounding pH is too acidic, the bacteria can produce a base to reduce the H+ concentration. If the conditions are excessively alkaline/basic, the bacteria can make acid through fermenting.
Therefore, Bacteria that require a pH of 11 for growth will respond in the following manner: the bacteria must be under extremely basic circumstances; exposing it to highly acidic settings will disrupt its internal functions, finally killing it.
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Based on the images taken through Stella’s microscope, which cell structures could be clearly identified using a compound microscope?
Answer:
Use 400 x in order to study the structure clearly.
Explanation:
Cell structures could be clearly identified when magnify the microscope about 400 x by using a compound microscope. Due to high magnification power of compound microscope, the individual is able to see different structures that are present in cells. while by using lower magnification, the individual is unable to see different structures clearly. So use high magnification in order to study the cell.
HELP!
A researcher observes the enzymatic polymerization of an organic molecule in a cell. Which enzyme is
MOST likely responsible for catalyzing the reaction?
A. a protein
O B. a nucleic acid
O C. a lipid
D. a carbohydrate
Answer:
A. a protein
Explanation:
Proteins function as enzymes in most of the catalyzing reactions, that increases the rate of reaction within cell.
Proteins are consist of multiple numbers of amino acids and the twisting and folding amino acids provide a unique identity to enzymes. Not all the proteins are enzymes but all the enzymes are proteins.
For example: Trypsin, Pepsin, and Lipases.
Hence, the correct option is "A. a protein".
3. The table below lists three characteristics of an atom of an element. An
atom of which element is described by the data in the table? *
Characteristics of an Element
Number of
Protons
Number of
Neutrons
Number of
Valence Electrons
37
48
Answer:the answer is Rubidium
Explanation: quizzzzzlm app thing also my teacher told me. I got you fa
Please help me answer this as fast as possible!!!!!
Answer:
The answer is C
Explanation:
All living things are made up of cells!
Answer:
Cells are the basic unit of structure for each organism
Explanation:
Well, its simply because cells are the building blocks of life. EVERY organism is made up of cells.
Cellulose is a carbohydrate with an alternating pattern of glucose molecules. How would plants be affected if cellulose did not have this alternating pattern?
Answer:
The correct answer is - Plants would lack stability and strength.
Explanation:
Answer:
The correct answer is - Plants would lack stability and strength.
Explanation:
I took the test
How do scientific understanding, historical data, and monitoring help scientists predict weather and climate hazards?
Answer: Predicting the size, location, and timing of natural hazards is ... of understanding that can be used to predict natural hazards
Explanation:
The class took a survey of 100 people to find the most popular top 5 pizza toppings. What type of graph should they use lo display their data? a.pie chart , b.scatter plot , c.line graph , or d.bar graph
Answer:
D. Bar graph
Explanation:
A bar graph is one of the types of graph or charts used to display statistical data. They are used to compare data between different groups. A bar graph makes use of either vertical or horizontal bars, which displays the actual data being compared.
Like other graphs, a bar graph contains a X-axis (horizontal), which contains the pizza toppings being compared and a Y-axis (vertical), which contains the number of people who chose each pizza. At the end, it will be easy to determine which pizza toppings is most popular from the bar graph because the pizza with the longest bar suggests the most popular.
how can an error in dna get us sick?
Pleaseeee explain!
Answer:
Errors during Replication. DNA replication is a highly accurate process, but mistakes can occasionally occur as when a DNA polymerase inserts a wrong base. Uncorrected mistakes may sometimes lead to serious consequences, such as cancer. Mutations: In this interactive, you can “edit” a DNA strand and cause a mutation.
After several miles of running and sprinting in intervals, the runner’s muscles ache and feel fatigued. Which is the best explanation for what has occurred?
The runner's muscles have accumulated lactic acid.
The runner’s body has failed to perform cellular respiration.
The runner’s cells are relying completely on aerobic respiration.
The runner’s muscles have accumulated carbon dioxide.
Answer:
A
Explanation:
Just did the Unit Test
When the body is subjected to vigorous exercise, lactic acid tends to build up in the muscles, hence, the most probable explanation for the fatigue felt by the runner is the accumulation of lactic acid in the runner's muscle
When the body is subjected to vigorous exercise such as running several miles as performed by the subject in the question, lactic acid accumulates temporarily in the muscles. This temporary build up of lactic acid in the muscles causes feeling of fatigue or weakness as the body tends to become short of oxygen required to breakdown the glucose in the blood.Therefore, the runner most probably has accumulated lactic acid in his muscles.
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select all the SI units of measurement.
inch
gram
liter
ounce
foot
meter
(SOMEONE PLEASE HELP ME CHOOSE WHICH ONES, 8th grade science)
Answer:
i think its Meter and ounce but im not 100% sure
Explanation:
true or false: a hypothesis must start with i think
thx
sakuracherry
Answer:
False
Explanation:
The hypothsis doesnt always have to start with i think.
Scientists use tissue cultures to study possible medicines that can be used to treat cancer patients. What is one benefit of this procedure?
Patients do not receive harmful or ineffective medication.
The cultured cells are not in their normal environment.
Doctors know how to treat all types of cancer.
One tissue culture can be used for all cancer patients.
Answer:
b. Patients do not receive harmful or ineffective medication.
Explanation:
on edge
Tissue culture is used to treat cancer patients, as this procedure does not use any harmful or ineffective medication on the patients unlike the other treatment options. Thus, the correct option is A.
What is Tissue Culture?
Tissue culture is the process of growth of tissues or cells in an artificial medium that is separate from the parent organism. This technique is also known as micropropagation method. It is typically facilitated via the use of a liquid, a semi-solid, or a solid growth medium, such as the broth or agar medium.
Tissue culture is used widely in science for the propagation of plants, in the study of medicines such as those related to cancer. Tissue culture can be used as a treatment option in cancer as this technique does not show any harmful or ineffective medication. The cultured tissues of stem cells can be used for replacement of infected cells or body parts.
Therefore, the correct option is A.
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Can you help me with the question listed in the pictures below? Please and thank you. Will mark BRAINLIEST!!!
Answer:
If you truly enjoy something, it won't feel like work.
Explanation:
if your job is something you just have to do and you are not happy it will
feel like work, like chores. No one likes to wash dishes so it feels like work.
What is the purpose of a cell?
Answer:
They provide structure for the body
Explanation:
they take in nutrients from food, convert those nutrients into energy, and carry out specialized functions. Cells also contain the body's hereditary material and can make copies of themselves. Cells have many parts, each with a different function.
What is one way that matter moves from the atmosphere to the geosphere
Answer:
Energy is transferred through the oceans, the atmosphere, and the geosphere by convection. Energy is transferred between the geosphere and the atmosphere by conduction.
In what two ways is the krebs cycle important for making atp
Answer:
The krebs cycle produces two ATP and energy carrying molecules that are used to produce more ATP in the electron transport chain.
Explanation:
The kreb's cycle produces two ATP and energy carrying molecules that are used to produce more ATP in the electron transport chain.
What are the features of kreb's cycle?The citric acid cycle —also known as the Krebs cycle or the TCA cycle —is a series of chemical reactions to release stored energy through the oxidation of acetyl-CoA derived from carbohydrates, fats, and proteins.
The Krebs cycle consumes pyruvate and produces three things: carbon dioxide, a small amount of ATP, and two kinds of reductant molecules called NADH and FADH. The CO2 produced by the Krebs cycle is the same CO2 that you exhale.
The tricarboxylic acid (TCA) cycle, also known as the Krebs or citric acid cycle, is the main source of energy for cells and an important part of aerobic respiration.
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How are the Domain Bacteria and the Domain Achaea similar?
Answer:
-They both have unicellular organisms
- They also both have autotrophes & hetertrophes
Which of the following cells is the most different :
Liver cells
Egg cells
Testicular cells
Uterine cells
NEED HELP DUE TODAY PLZ HELP ME!!!!
I will give brainly!!!!
NOTE: Cells are NOT to scale.
Which of the following statements is true regarding Cells A and B?
Choose 1 answer:
(Choice A)
A
Both Cell A and Cell B are eukaryotic because they have ribosomes.
(Choice B)
B
Cell A is eukaryotic because it has DNA.
(Choice C)
C
Cell B is eukaryotic because it has a nucleus.
(Choice D)
D
Neither Cell A and Cell B are eukaryotic because they have flagella.
cell b is eukaryotic because it has a nucleus
Omar wants to determine if the mass of a model rocket affects how long the rocket is able to stay up in the air. To do this, he constructs three identical rockets and then fills two of the rockets with varying amounts of sand to add mass. He then launches the rockets one at a time and times how long they are able to stay airborne.
What is the test variable (independent variable) in Omar's experiment?
Answer: To do this, he constructs three identical rockets and then fills two of the rockets with varying amounts of sand to add mass.
Explanation: