Answer:
They are necessary because, in fresh water, the concentration of solutes inside a cell is greater than that outside the cell, so the cell constantly absorbs water through osmosis
Explanation:
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What is an everyday problem you could use the scientific method to solve? Include what steps of the method would look like for this problem.
Answer:
observation : a toaster doesn't work
question : is something wrong with the electrical outlet
hypothesis : something is wrong with the outlet my coffee maker also won't work and plug into it
experiment : I plug my coffee maker into the outlet
result : a coffee maker works
2nd result : my toaster is broken
The force that pulls planets toward the Sun is called
gravity
magne
Offerentiation
Answer:
The force that pulls planets towards the Sun is called gravity.
Match each part the cell to is structural features
A. larger size in plant cells
B. Salt and water base
C. Grainy appearance
D. permeable and flexible
Matches are below
Cytoplasm
Cell membrane
Rough endoplasmic reticulum
Vaculoe
Answer:
A). Vacuoles B). Cytoplasm C). Rough Endoplasmic Reticulum D). Cell membrane
Explanation:
The plant has the largest vacuole than animal cells. The cytoplasm is mostly composed of water, salts, and proteins. It is one out of 2 types of endoplasmic reticulum, characterized by the appearance of the ribosomes that give it a grainy appearance. The cell membrane is made of millions of smaller molecules that create a flexible and permeable container.
Mr. Doe wanted to perform an experiment to determine if doing a class review before a test would increase test scores. Mr. Doe normally does not review. To perform this experiment, Mr. Doe reviewed material with 2nd period before a test and did not review with 3rd period. After grading papers, he found that 2nd period had an average grade of 93 and 3rd period had an average grade of 72. He determined that reviewing before a test might increase test scores. 2. Which of the following is the control group?
Answer:
3rd Period
Explanation:
2nd period reviewed material with Mr. Doe
3rd period did NOT reviewed material with Mr. Doe
Experimental group is the group being affected.
Control group is the group not being affected.
without an enzyme, the reaction requires _______ activation energy.
lowering the activation energy of the reaction.
Solid water is less dense than liquid water. Explain the ecological significance of such a property when considering a small pond freezing over for the winter.
Answer:
When the process of freezing occurs within water, the air molecules within the hydrogen bonds will attract other oxygen bonds, creating a less dense substance.
Explanation:
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Explain why variation is an advantage for a species such as the common emerald dove
Explanation:
Having variation within a species means that if the environment changes there may be individuals within the species more able to withstand the change and survive.
Variation refers to the differences between members of the same species. There is usually extensive genetic variation within a population of organisms or a species.
The common emerald dove (Chalcophaps indica), also called asian emerald dove and grey-capped emerald dove, is a widespread resident breeding pigeon native to the tropical and subtropical parts of the Indian Subcontinent and Southeast Asia, the dove is also known by the names of green dove and green-winged pigeon. The common emerald dove is the state bird of the Indian state of Tamil Nadu. The Pacific emerald dove and Stephan's emerald dove were both considered conspecific.
Name the process that plants and animals use to maintain an inner cellular environment stable
Answer:
homeostasis
Explanation:
Define normal distribution.
Answer:
a function that represents the distribution of many random variables as a symmetrical bell-shaped graph.
Explanation:
1.What are heterotrophs? How do heterotrophs get their food?
2.What are autotrophs? How do autotrophs get their food?
Answer:
Heterotroph is an organism that is unable to synthesize its own food,
they depends on autotrophs and others animal for their food
An autotroph is an organism that can make its own food by the
process of photosynthesis is called autotrophs
they get their food by photosynthesis
In terms of the scientific method, the purpose of an experiment is:
When 1 carbon atom combines with2 oxygen atoms, the resulting substance is called a(n)
Answer:
Carbon Dioxide
Explanation:
Carbon Dioxide consists of one carbon atom and two oxygen atoms.
Cellulose is a type of
Answer:
Cellulose is a carbohydrate
Converts energy from food into energy a cell can use
Answer:
through a process called cellular respiration
Explanation:
the state of change between mechanical to chemical in the body,to boost the body functions.
Fuentes no renovables de la naturaleza
Explanation:
Se denomina fuentes de energía no renovables a aquellas que se encuentran en la naturaleza en cantidades limitadas. No se regeneran o lo hacen en forma extremadamente lenta. Fuentes de energía no renovables son los combustibles fósiles y los isótopos radiactivos utilizados en la energía nuclear.pls mark me branilest
MN
Which element has four valence electrons?
(1 point)
O beryllium (Be)
O potassium (K)
O sulfur (S)
O silicon (Si)
Answer:
O silicon (Si)
Explanation:
-Valence electrons are electrons of the outermost shell which can participate in chemical bonding. ... -As in silicon, four electrons are present in the outermost shell, so silicon has Four valence electrons.
Among the options given in the question, the element that has four valence electrons is known as Silicon. Thus, the correct option for this question is D.
What are Valence electrons?Valence electrons may be defined as the number of electrons that are present in the outermost shell of an element. These electrons actively take part in chemical bonding due to the sharing and pairing of electrons.
The atomic number of beryllium is 4, it has valance electrons of two. Potassium has an atomic number of 19, it has a valence electron of one. Sulfur possesses an atomic number of 16, it has valence electrons of six. While Silicon has an atomic number of 14, its electronic configuration is 2, 8, and 4. So, it has valence electrons of four.
Therefore, the element that has four valence electrons is known as Silicon. Thus, the correct option for this question is D.
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a naturally occurring, inorganic solid that has a crystal structure & a definite chemical composition.
a
A. All of these
B. precipitate
C. mineral
D. rock
Mineral is a naturally occurring, inorganic solid that has a crystal structure & a definite chemical composition.
The
the value of the coefficient of friction, the greater the
resistance to sliding.
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i need a hypthosis idea and an experiment that might prove it
i dont want one thats over popular
im free to any kind of hypotheses not just science
If, for one day, ice water decided to be denser than liquid water, how will this affect our planet?
Louis Pasteur demonstrated that people could be vaccinated against smallpox through
exposure to cowpox.
A. True
b. False
Answer:
Explanation:
It's false
Which of the following phrases best describes a solvent?
A) can be dissolved by the solute
B) has a high concentration of solutes
C) usually a sugar or protein
D) present in a greater concentration that solutes
A solvent is a substance present in a greater concentration than solutes (Option D).
A solvent is a substance (usually a liquid) that dissolves another substance/s in order to form a solution.The solvent has the ability to dissolve other substances present in the solution that are referred to as solutes.Some of the most common solvents include water, ethanol and methanol.In conclusion, a solvent is a substance present in a greater concentration than solutes (Option D is correct).
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1.) What are the 4 organic compounds? (hint: CLP
-) What is another name for carbohydrates? ca
Science biology
Answer:
carbohydrates, lipids, proteins, and nucleic acids.
"sugar"
Explanation:
Use your knowledge of Protein Synthesis, and the provided chart, to identify the
correct Amino Acid sequence from the mRNA strand: AGUUGGUCUGUA
A: serine, tryptophan, serine, valine
B: aspartic acid, valine, leucine, asparagine
C: leucine, histinde, glutamic acid, leucine
D: serine, threonine, arginine, aspartic acid
Answer:
A: serine, tryptophan, serine, valine
Explanation:
Hi there!
Protein Synthesis is the process where proteins are created from DNA.
We are given the mRNA strand AGUUGGUCUGUA, as well as a provided chart
The mRNA strand is created out of nucleotides (each of the letters is one nucleotide in the code), which will code for a specific chain of amino acids, creating a protein.
Each amino acid is made up of 3 nucleotides. This sequence of 3 nucleotides is called a codon.
So we can break up the code into groups of 3, to make identifying the codons easier.
AGU UGG UCU GUA
Now we need to figure out which amino acid each codon codes for. Thankfully, we were given a chart that can help us with that.
The chart is read where the first base is on the left, and is vertical. The second base is in the center, yet is horizontal. The third base is on the right, and is also vertical.
Let's start with the first codon, which is AGU
The first base is A. The second base is G, and the third base is U. So the first amino acid is serine (ser)
The second codon is UGG.
The first base is U, the second base is G, and the third base is G. So the second amino acid is tryptophan (trp)
The third codon is UCU
The first base is U, the second base is C, and the third base is U. So the third amino acid is serine (ser)
The fourth codon is GUA
The first base is G, the second base is U, and the third base is A. So the fourth amino acid is valine (val).
That means the amino acid sequence from the mRNA code is: serine, tryptophan, serine, valine. The answer is A
Hope this helps!
Okazaki fragments are best described as:
A. short segments of DNA formed on the leading strand.
B. cause by the DNA Helicase building in the 3 to 5' direction.
C. short segments of replicated DNA formed on the lagging strand.
O
D. caused by the single strand binding proteins moving in away from the replication fork.
DNA replication occurs only in 5'-3'. Option C. Okazaki fragments are best described as short segments of replicated DNA formed on the lagging strand.
What is an Okazaki fragment?During DNA replication, the molecule unwinds and the two strands get separated.
Different enzymes and proteins are involved in the replication fork formation, such as helicase (enzyme needed to break hydrogen bonds and separate the two original strands) and topoisomerase (enzyme that releases tension).
DNA polymerase makes the new nucleotides enter the fork and pairs them with the corresponding nucleotide of the original strand. Adenine pairs thymine, and cytosine pairs guanine.
Since DNA strands are antiparallel and replication occurs only in 5'-3' direction, one of the strands will replicate continuously, while the other strain will be replicated by short fragments known as Okazaki fragments.
Okazaki fragments are only formed on the lagging strand.
According to this framework, the correct option is C. short segments of replicated DNA formed on the lagging strand.
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Describe how the conditions under which rocks form affect the physical stability of rocks.
Answer:
The conditions that affect physical stability are heat, temperature, compression, pressure, and the molecular structure. The base of the intrusion is parallel to the rock layer beneath it.
why is going 55mph a good thing?
Answer:
Congress imposed the 55-mph limit in 1974 as a fuel-conservation measure, which it is; federal officials estimate it conserves about 9 million gallons of gasoline a day. ... The best estimate is that it has helped save the lives of about 36,000 people in the last five years
the loss of complex structure and/or function that is caused by external stress or chemicals
Answer: it’s the second one
6. The plant tissue that carries sugar from the
leaves to the roots is the
Answer:
phloem
Explanation:
I am pretty sure that this is right and the xylem carries the water. I hope this helps!! I am sorry if it is worked wrong.
Identify the type of tissue in the following:
Skin, bark of tree, bone, lining of kidney tubule, vascular bundle
Answer:
Skin = Epithelial tissue
Bark of tree = Cork
Bone = Connective tissue
Lining of kidney tubule = Simple cuboidal epithelium
Vascular bundle = Xylem and Phloem