Which is evidence for the existence of dark energy?
Black holes that are expanding at a constant rate.
Pulsars that seem to be moving closer at an accelerating rate.
Supernovae that are moving away at an accelerating rate.
Galaxies that are rotating at a constant rate.
Answer:Supernovae that are moving away at an accelerating rate.
Explanation:
took test
Answer:
Supernovae that are moving away at an accelerating rate.
Explanation
i took the quick check
Distinguish between pillbugs and sowbugs?
Answer:
Sowbugs and pillbugs are similar in appearance and their names are sometimes used interchangeably. However, the sowbug has a pair of tail-like appendages which project out from the rear of its body, while the pillbug has no extreme posterior appendages, and can roll up into a tight ball when disturbed.
Explanation:
13. Normal saline (salt) solution is isotonic to your body fluids, meaning that it has...
Compound X is used as an energy source in respiration.
Suggest the name of compound X.
Answer:
Glucose
Explanation:
After reading the overview of cellular respiration, the primary or initial fuel of respiration should be clear - it's glucose, which is the molecule of sugar that plants create for animals (as well as the plant itself) to utilize as an energy source.
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in both lichens and mycorrhizae, what does the fungal partner provide to its photosynthetic partner?
Answer:
it provides carbon as food resource
Which of the following is not evidence for Continental Drift Theory?
main issue with Wegener's Continental Drift Theory is he did not have a mechanism behind the drifting of continents
1. Label the following parts of the DNA molecule:
A.
B.
C.
D.
E.
2. Answer the following questions:
A. How many molecules make up a nucleotide?
B. What two molecules make up the sides of a DNA
molecule?
C. What type of sugar does DNA contain?
newer questions 3 -
Answer:
1)
A- nitrogenous base
B- hydrogen bond
C- pentose sugar
D- phosphate group
E- nucleotide
2)
A- 3 molecules
B- phosphate group and pentose sugar
C- deoxyribose sugar
how many chemical bond does carbon form
Answer:
carbon form four covalent bond
Explanation:
hope it's helpful
Somebody help me please
ASAP HELP 100 POINTS Which describes nuclear fission?
starts when two atoms slam together, causing the larger atom to split into two smaller atoms
starts when a neutron slams into an atom, causing two atoms to form one, heavier atom
starts when two atoms slam together to form one, heavier atom
starts when a neutron slams into an atom, causing the larger atom to split into two smaller atoms
Answer:
to study the nature and size of the image formed by a convex lens using a candle and a screen activity file
The statement that describes nuclear fission is as follows:
Starts when a neutron slams into an atom, causing the larger atom to split into two smaller atoms.Thus, the correct option for this question is D.
What is Nuclear fission?Nuclear fission may be defined as a type of nuclear reaction during which the nucleus of an atom splits into two or more smaller nuclei due to the impact of another particle with the liberation of a very large amount of energy.
Nuclear fission is a process where a heavy nucleus is bombarded through neutrons and due to this, it becomes unstable. This causes it to decompose into two or more nuclei spontaneously with equivalent size and magnitude. It involves a tremendous detachment of energy as well as the emission of two or more neutrons.
Therefore, the statement "starts when neutron slams into an atom, causing the larger atom to split into two smaller atoms" describes the process of nuclear fission. Thus, the correct option for this question is D.
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Nombra los siguientes OXACIDOS por las tres nomenclaturas conocidas: 1) HBrO2 2) H3PO4 3) HClO 4) H2Cr2O4 5) H2SO3
Answer:
2) H3PO4
Explanation:
Calculate the magnification of an object with length 4cm , if the length of the drawing is 40cm
Answer:
-0.33
Explanation:
During the replication of DNA:
A. both strands of the DNA molecule act as templates
B. only one strand of DNA acts as a template
C. the cell also undergoes mitosis
D. the reaction is catalyzed by RNA polymerase
Answer:
A
Explanation:
Both strands of the DNA molecule act as templates
Both strands will be divided and then used to make two new DNA strands, each with half of the original
During DNA replication, the two strands of the DNA molecule act as templates. Because the fret has been divided into two pieces, each new DNA strand contains half of the original strand.
What is DNA?DNA, or deoxyribonucleic acid, is the molecule that carries the genetic material required for an organism's growth and operation. DNA has a double helix structure, which is made up of two connected strands that loop around one another to form a twisted ladder.Depending on your parents, half of your genome is inherited from your mother and half from your father. The information molecule is DNA. It stores instructions for the production of larger molecules known as proteins. These instructions are stored within each of your cells and are distributed across 46 long structures known as chromosomes. These chromosomes are composed of thousands of shorter DNA segments known as genes.To learn more about DNA refer to:
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If you crossed two plants from the F2 generation, what procedure would you follow to determine the genotypes of the next generation?
Answer:
You would use a test cross to determine the next generation
Explanation:
If you crossed two plants from the F2 generation, test cross procedure you should follow to determine the genotypes of the next generation.
What is a test cross?Another important tool created by Gregor Mendel is the test cross. A test cross is a genetic experiment that involves crossing a homozygous recessive organism having a dominant phenotype with an unidentified genotype (and phenotype).
A test cross is a tool for investigating an organism's genetic makeup. The test cross was initially employed as an experimental mating test to identify the genotype's allele composition.
Therefore, to determine the genotypes, the test cross gets its name from the fact that it can tell whether a person has a homozygous dominant or heterozygous dominant trait.
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Which of the following statements are part of Koch’s Postulates? Check all that apply.
A - The disease-causing microorganism must be present in at least half of the cases of disease.
B -The microorganism can be isolated and grown in a pure culture.
C - The microorganism from the pure culture will cause the disease in at least 80% of healthy organisms.
D - A re-isolated microorganism may evolve into a different species than the original.
Answer:
B
Explanation:
'The microorganism can be isolated and grown in a pure culture', is the only correct answer.
The statement that a microorganism can be isolated and grown in a pure culture is a part of Koch’s Postulates.
What are microorganisms?
A microorganism, or microbe is an organism of microscopic size, which may exist in its single-celled form or as a colony of cells.
The possible existence of unseen microbial life was suspected from ancient times, such as in Jain scriptures from sixth century BC India. The scientific study of microorganisms began with their observation under the microscope in the 1670s by Anton van Leeuwenhoek. In the 1850s, Louis Pasteur found that microorganisms caused food spoilage, debunking the theory of spontaneous generation. In the 1880s, Robert Koch discovered that microorganisms caused the diseases tuberculosis, cholera, diphtheria, and anthrax.
Because microorganisms include most unicellular organisms from all three domains of life they can be extremely diverse. Two of the three domains, Archaea and Bacteria, only contain microorganisms.
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Which would best be used as an index fossil?
O A. alligator bones, because they have lived a long time with relatively few changes in body structure
O B. petrified wood, because it clearly shows the parts of the wood replaced by minerals
O C. sedimentary rock, because it is found in horizontal layers created in succession
O D. trilobites, because they lived for a short period of time and then became extinct
Starch is found in foods such as peas, corn, and potatoes. For the body to receive energy from starch, it is broken down into smaller units. A mutation occurs in the gene that codes for a protein that breaks down starch.In which case will the mutation be harmful?
This mutation would be harmful for the body because, when not able to break down the starch and use it for energy, the body will begin to have starch buildup and not be able to do anything with it. It would continue to build up and do some serious damage everytime someone who has this mutated gene eats food rich in starch.
I GIVE BRAINLIST ON ALL MY QUESTIONS!!
Which of the following statements is NOT TRUE about photosynthesis and cellular respiration ?
A) both processes requires energy
B) photosynthesis occurs in plants; cellular respiration occurs in plants and animals
C) both processes occur in the mitochondria
D) the chemical equations for the processes are opposite of each other
Answer:
I think D (the chemical equations for the processes are opposite of each other)
Hope this answer is correct ಥ‿ಥ
What are the four bases that make up DNA
Answer:The DNA of all the living beings is composed of just four bases i.e. Adenine (A), Thymine (T), Guanine (G), and Cytosine (C).
Explanation:
Answer:
adenine, cytosine, guanine, and thymine,
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Explanation:
which area of the brain is responsible for many of our circadian rhythms including sleep?
Answer:
Hypothalamus
Explanation:
It is found in the forebrain
When the water turns yellow which gas is most common
Answer:
Carbon dioxide (Co2)
Explanation:
Nitrogen and phosphorus are referred to as macronutrients because ________. A. they are larger than other nutrients needed by plants B. they are needed by large organisms C. they are required in large amounts for organisms to survive D. they are needed to manufacture large biomolecules E. their cycles have larger reservoirs than those of micronutrients
Macronutrients are all substances that provide energy to the metabolism for optimal functioning, nitrogen and phosphorus are required in large amounts for organisms to survive.
What are macronutrients?It refers to those elements that provide energy to the body, these are proteins, carbohydrates and lipids.
Nitrogen and phosphorus, meanwhile, allow the development of metabolic processes, prevent infections and contribute to growth.
Therefore, we can conclude that the body requires a greater amount of macronutrients than micronutrients, nitrogen and phosphorus are required in large amounts for organisms to survive.
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which condition can cause a forward tilt of the pelvis and an increased curvature of the lower back?
Answer:
Tight hip flexor muscles
Somebody help me please
It A i think dont report me but from my caculations its DNA
Which molecule most likely has the greatest amount of stored energy in its
bonds?
A.O=C=O
B.H-O-H
C.Fe-O
D.Na-CI
Answer:
O=C=O
Explanation:
I hope this helps.
Why is there a limit on the number of trophic levels that can exist within an ecosystem?
the exchange of gases within the cells of the body is known as
Explanation:
The exchange of gases between the blood and tissue cells is internal respiration. Finally, the cells utilize the oxygen for their specific activities: this is called cellular metabolism, or cellular respiration. Together, these activities constitute respiration.
what type of protein is a collagen?
PLS HELP WILL GIVE BRAINLIEST TO CORRECT ANSWER: How many grams of water are produced if you have 12 grams of sodium hydroxide (NaOH)? Round to 1 number after the decimal and include your units.
Answer:
5.526g
Explanation:
NaOH--> molar mass-: 22+16+1= 39gmol-
2Na+ + 2H2O + 2e- --> H2 + 2NaOH
2NaOH-->2H2O
12g of NaOH--> 0.307mol
0.307mol of water--> 5.526g
Answer:
undefined
Explanation:
if you have 0.12, round to 0.
Which of the following is a product of cellular respiration?
Carbon dioxide
Oxygen
Carbon monoxide
Nitrogen
Answer:
it Carbon dioxide and water but Carbon Dioxide was the only one here
Explanation:
The one that is a product of cellular respiration is carbon dioxide. The correct option is A.
What is cellular respiration?Cellular respiration is the process by which biological fuels are oxidized in the appearance of an inorganic electron acceptor such as oxygen to yield huge amounts of energy, which drives the bulk production of ATP.
In plants, photoautotrophic processes are used to obtain the glucose required for cellular respiration. This means that plants can use the light energy they receive from the sun to produce glucose and oxygen.
ATP is the primary product of cellular respiration; waste products include carbon dioxide and water.
All through cellular respiration, one sugar molecule is converted into 38 ATP molecules. The electron transport system actually creates 34 molecules of ATP out of a total of 38 molecules.
Thus, the correct option is A.
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