Answer: Heat expansion
Explanation:
Answer:
A) Frost wedging, B) root wedging, C) salt weathering, D) heat expansion
Explanation:
you have no choice but to trust me, and say thank you later
(IT IS TRUE)
Which best describes activation energy?
A. the maximum amount of energy required to end a chemical reaction
B. the amount of energy absorbed in an endothermic reaction
C. the minimum amount of energy required to start a chemical reaction
D. the amount of energy released in an exothermic reaction
Answer:
The answer is B
Explanation:
as activation energy is the least possible amount of energy (minimum) which is required to start a reaction or the amount of energy available in a chemical system for a reaction to take place.
Activation energy is the minimum amount of energy needed to start a chemical reaction.
• The minimum amount of additional energy needed by a reacting molecule to get transformed into the product is termed activation energy.
• It can also be illustrated as the least amount of energy required to energize or stimulate the atoms or molecules so that they go through a chemical reaction or transformation.
• It is denoted by Ea and is generally measured in kilojoules per mole or joules.
• The activation energy relies upon two factors, that is, the effect of catalyst and the nature of reactants.
Thus, activation energy is the minimum amount of energy required to start a chemical reaction. Option C is correct.
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Look at the images of different rocks.
Which two rocks have a fine-grained texture?
1 and 5
2 and 3
3 and 5
4 and 1
Answer:
1 and 5
Explanation:
Image 1 and 5 actually show fine-grained textures of rocks.
Fine-grained textures actually indicates that magmas that are formed at or near the earth's surface cool rapidly. It's known that when magmas cool fast, they prevent very large crystals from growing. When hand samples of fine-grained rocks are taken, they appear homogeneous throughout the rock.
Answer:
1 and 5
Explanation:
why didn't Darwin see creatures living in the ocean?
Answer:
Cuz he blind
Explanation:
Use the drop-down menus to identify the scientists who match the descriptions below.
found that animals are composed of cells
found that plants are composed of cells
looked at cork through a compound microscope
declared that all living cells can only come from other living cells
called living cells “animalcules
Answer:
the answers are;
1. Theodor Schwann
found that animals are composed of cells
2. Matthias Schleiden
found that plants are composed of cells
3. Robert Hooke
looked at cork through a compound microscope
4. Rudolph Virchow
declared that all living cells can only come from other living cells
5. Anton van Leeuwenhoek
called living cells “animalcules”
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Which of the following reactions provide the chemical energy for most cell functions by releasing energy?
a. ATP bonds phosphate yielding ADP
b. ADP bonds phosphate yielding ATP
c. ATP loses phosphate yielding ADP
d. ADP loses phosphate yielding ATP
Not sureAnswer:
Explanation:not sure
. Think of a type of cell that would frequently divide
Answer:
mostly any type of cell would but i think some of them are skin cells, the reason is because as you keep growing the body need to produce more skin cells also since you can get scratches here and there.
Explanation:
hope this helps!! oh and also hair cells
Someone help? I don’t get it :(
Answer:
a) Tall and purple
b) Tall and white
c) short and white
d) short and Purple
Explanation
when both alleles are same it is called homoozygous condition and when alleles are different it is called heterozygous condition
As tall(T) and purple(P) characteristics of plant are dominant so no matter whatever the alleles are,
TT or Tt its going to be tall
PP or Pp its going to be purple
TT and PP are Homoozygous Dominant
Tt and Pp are Heterozygous Dominant
but to get short or white both the alleles should be homoozygous recessive that is,
tt for short
pp for white
Describe how plant cells keep themselves rigid.
Answer:
Plant cells have several structures not found in other eukaryotes. In particular, organelles called chloroplasts allow plants to capture the energy of the Sun in energy-rich molecules; cell walls allow plants to have rigid structures as varied as wood trunks and supple leaves; and vacuoles allow plant cells to change size.
Explanation:
Its right
Plant cells should be treated as rigid due to the cell wall.
The information regarding the cell wall is as follows:
It is the envelope that is treated as the extracellular and present in all types of vegetables having few bacteria, fungi, etc. The composition should be changed as the organism habit. Also, the cell wall should be responsible for the plant cells rigidity.Learn more: brainly.com/question/23334479
The chemical reaction equation of photosyntesis is shown here: 6CO + 6HO + light CHO+ 6O What information is not given in this equation. It does not show if the reaction is reversible. It does not show the reactants needed for the reaction. It does not show that photosynthesis consists of many separate steps. It does not show the number of molecules required to produce glucose.
Answer:
It does not show that photosynthesis consists of many separate steps.
Explanation:
Photosynthesis is the metabolic process whereby plants and other certain organisms synthesize their food (glucose) using sunlight. The general chemical equation of the photosynthetic process is depicted below:
6CO2 + 6H2O + light --> C6H12O6 + 6O2
This equation gives a general breakdown or a summary of what occurs in the process of photosynthesis, however, it is not that simple. Photosynthesis involves MANY SEPARATE STEPS that the equation is not showing. For example, the equation does not show that photosynthesis occurs in two stages namely: light-dependent phase and light independent phase.
Which of these cell types would you expect to find in muscle tissue? Squamous cells, stellate cells, discoid cells, fibrous cells
Fibrous cells are the cell types that would be expected to find in muscle tissue.
Muscle fiber is a portion of the muscles, made up of cells that vary depending on the organ in which it is found.
These are located inside the muscle, and in turn are composed of:
Sarcolemma receives the impulse that activates the contraction of the muscle. Mitochondria are the structures that contain ATP. Myofibrils in charge of giving it the elastic characteristic and is made up of actin and myosin. Nucleus: contains the information. Sarcoplasmic reticulum that is responsible for containing calcium ions that will be used during contraction.Muscle fibers are cells that are responsible for producing the strength of the muscular system, thanks to all the components it can produce fast or slow contraction.
Therefore, we can conclude that fibrous cells are the cell types that would be expected to find in muscle tissue.
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amino acids are linked together to make proteins by removing a molecule of in a process called
several different classes make up a ___.
family
order
phylum
kingdom
Several different classes make up a phylum
What is a phylumIn biological classification, several different classes make up a phylum. The hierarchical classification of living organisms consists of various levels, including kingdom, phylum, class, order, family, genus, and species. These levels help organize and categorize organisms based on their shared characteristics and evolutionary relationships.
A phylum is a taxonomic rank below the kingdom and above the class. It represents a major division within a kingdom, grouping together organisms that share certain structural and functional features.
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Proteins are made out of ____________.
What determines the primary structure of a protein?
State two functions of proteins.
What are enzymes?
Describe the role of hemoglobin.
Answer:
proteins are made of amino acids
The primary structure of a protein refers to the sequence of amino acids in the polypeptide chain. ... The primary structure of a protein is determined by the gene corresponding to the protein. A specific sequence of nucleotides in DNA is transcribed into mRNA, which is read by the ribosome in a process called translation
causes Biochemical Reactions,Transports and Stores Nutrients
Hemoglobin is a protein that is used to carry oxygen through the bloodstream from the lungs to the tissues. This is important for survival. Hemoglobin has a lower affinity for oxygen the lower the concentration of oxygen gets. This has great implications for the human body and has helped us adapt very effectively. :-)
Equation for Aerobic Respiration
what is a factorial design
Answer:
Factorial design involves having more than one independent variable, or factor, in a study. ... Factorial design studies are named for the number of levels of the factors. A study with two factors that each have two levels, for example, is called a 2x2 factorial design.
Explanation:
What is the movement of structure high to low using a carrier protein reaching equilibrium?
~Simple diffusion
~Facilitated Diffusion
~Osmosis
Answer: Facilitated Diffusion
Explanation: Facilitated diffusion is a type of passive transport in which substances move across the cell membrane through helper proteins. Because it is a form of passive transport, it requires no energy to occur. In diffusion, substances move from areas of high concentration to areas of low concentration.
Atoms of the same element that have different numbers of neutrons are called ____.
A) isotopes
B) compounds
C) neutrino elements
D) molecules
I am trying to dissolve popcorn butter and milk into water. I notice the milk
dissolves, but the popcorn butter does not. Why is this? *
Answer:
Because butter is an oil-like substance. Water is a combination of hydrogen and oxygen, oil on the other hand is not. For the two to mix the oil would have to break the hydrogen chain but that is not possible because then the water won't be water.
So most fats repel water, just think about it being hydrophobic :)
Hope that helps and have a great day!
Which example is classified as a body fossil?
A) footprint of a stone-age individual
B) ancient shark vertebra
C) fossilized bird droppings
D) a worm trail
Answer:
A
Explanation:
Answer:
ancient shark vertebra
Explanation:
Please help me i don’t understand this
Answer: So this is like a food chain chart. The animals at the top are one top of the food chain and do not get eaten by anything; they dont have any predators. This chart goes from bottom up. So the plants have arrows pointing to animals. Those animals that the plants are pointing to are the animals that eat that plant. And then those animals point to another animal higher on the chain and those animals that are higher eat the animals that are lower than them and have the arrow pointing at them. So the snake is pointing to the owl because the owl eats the snake. The frog is pointing to the snake because the snake eats the frog. And the list on the side of the chart is just a list of different kinds of animals. I dont remember what each of them are so you are going to have to find out what element is missing.
Explanation:
Which of the following mutations will cause the least damage to the resulting protein? An insertion at the end of the DNA strand. deletion at the beginning of a DNA strand. A silent substitution at the beginning of the DNA strand. A missense substimion at the end of the DNA strand.
Answer:
A missense substimion at the end of the DNA strand.
Explanation:
A missense mutation is a mistake in the DNA which results in the wrong amino acid being incorporated into a protein because of change, that single DNA sequence change, results in a different amino acid codon which the ribosome recognizes. Changes in amino acid can be very important in the function of a protein. But sometimes they make no difference at all, or very little difference. Sometimes missense mutations cause amino acids to be incorporated, which make the protein more effective in doing its job. More frequently, it causes the protein to be less effective in doing its job. But this is really the grist of evolution, when missense mutations happen, and therefore small changes, frequently small changes in proteins, happen, and it happens to be that it improves the function of a protein. That will sometimes give the organism that has it a competitive advantage over its colleagues and be maintained in the population.
Which molecule is the most common/plentiful molecule in our cells?
Answer:
water
Explanation:
Cells are composed of water, inorganic ions, and carbon-containing (organic) molecules.
1. Which limiting factor(s) in this lab simulation are biotic? The biotic factor is alligator and the mosquito. 2. Which limiting factor(s) in this lab simulation are abiotic? 3. Which limiting factor impacted the cricket frog population the most? Use evidence to support your answer.
Since, the question is incomplete the complete question is as follows:
Limiting Factors Lab Report Instructions: In this lab, you will investigate how limiting factors affect a population of cricket frogs in the Florida Everglades. Your scientific inquiry will focus on three limiting factors: food, predators, and pollution. Complete the following lab report to record your observations as you move through the simulation.
1. Which limiting factor(s) in this lab simulation are biotic? The biotic factor is alligator and the mosquito. 2. Which limiting factor(s) in this lab simulation are abiotic? 3. Which limiting factor impacted the cricket frog population the most? Use evidence to support your answer.
Answer: 1. predator
2. food and pollution
3. predator
Explanation:
1. The predator is the biotic limiting factor in this simulation because the predator can feed on the population of cricket frogs, and will reduce their population size.
2. The food and pollution are the abiotic limiting factors as they are non-living. If the cricket frogs do not get food they will die and the pollution in the air or water can reduce their life span.
3. The predator population affected the cricket population the most as they were available as a good source of food for the predators.
Answer: 1. predator 2. food a pollution 3. also predator
Explanation: I don't really have an explanation
Replicate the following strand of DNA:
Original DNA-- A T G A A C C A T T C A G T A T G G
Answer:
Original DNA: ATG AAC CAT TCA GTA TGG
Complimentary DNA: TAC TTG GCA AGT CAT ACC
mRNA molecule: AUG AAC CGU UCA GUA UGG
AMINO ACID: Methionine (Start) - Aspargine (Asn) - Arginine (Arg) - Serine (Ser)- Valine (Val) - Tryprophan (STOP)
2nd template:
Original DNA: ATG GGT CTA GCG AAA GAT
Complimentary DNA: TAC CCA GAT CGC TTT CTA
mRNA molecule: AUG GGU CUA GCG AAA GAU
AMINO ACID: Methionine (Start) - Glycine (Gly) - Leucine (Leu) - Alanine (Ala) - Lysine (Lys) - Apspartic Acid (Asp)
Explanation:
When you are forming the DNA complimentary strand you need to remember that they come in base pairs, and each base pairs up with a specific base. In the case of DNA the base pairs are the following:
A - T ; T - A
C - G; G - C
So:
For every A, its complimentary is T. For every T, it's complimentary is A.
For every C, it's complimentary is G. For every G, it's complimentary is C.
So in the case of your 1st DNA template:
Original DNA: ATG AAC CAT TCA GTA TGG
Complimentary DNA: TAC TTG GCA AGT CAT ACC
During transcription however, mRNA is formed. RNA does not have thymine (T), but Uracil (U) instead. So the base pairs would be different in the case of Adenine(A), thymine and Uracil.
A - U; T - A
C - G; G -C
So:
For every A, it's complimentary is U. For every T, it's complimentary is A.
For every C, it's complimentary is G. For every G, it's complimentary is C.
Going back to your 1st DNA template:
Original DNA: ATG AAC CAT TCA GTA TGG
Complimentary DNA: TAC TTG GCA AGT CAT ACC
mRNA molecule: AUG AAC CGU UCA GUA UGG
Duing translation, tRNA brings the amino acids to the mRNA strand. There is a specific RNA codon sequence that codes for a specific AMINO ACID. These codons are 3 bases grouped together. You can use the table attached to see the amino acid each combination.
Amino acids are the building blocks of protein. The DNA templates determines the type of protein that will be made. The tRNA brings the amino acid to the mRNA template. Then it drops the amino acid off, which will bond with the next amino acid coded to attach to it.
So if you take the first mRNA codon AUG, you can see in the table that it codes for Methionine, which is a start codon, meaning this is the start of a new protein. It will then attach to the next amino acid that codes for the next codon which is AAC that codes for Aspargin. They will continue until it reaches a STOP codon, which means it would be the end of that protein.
The replica of the following strand of DNA is:T A C T T G G T A A G T C A T A C C .
What is DNA ?DNA is a hereditary material which is present in human beings as well as all other living organisms. Every cell which is present in an organism's body has DNA which is the same. Most of the DNA is situated in the cell's nucleus and small amount of it can be found in the cell's mitochondria as well.
Information which is stored in DNA is stored as codes made up of four chemical bases namely, adenine, thymine , cytosine and guanine.Human DNA consists of 3 billion bases .The order of the bases determines information which is required for building and maintaining an organism.
DNA bases are capable of pairing up with each other. Adenine pairs with thymine and guanine pairs up with cytosine .Each base is also attached to a sugar molecule and a phosphate group. A base, phosphate sugar are together called as nucleotides.
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Recently in Antarctica, a penguin with all black feathers was
discovered. This trait had never been seen before. What is
the likely source for this "new" trait?
The penguin in question has a rare genetic mutation called melanism, which makes skin, fur, and feathers black due to a high concentration of the pigment melanin. It's basically the opposite of albinism, which is caused by a lack of pigment.
In a food web, the arrows point from one organism to the organism it eats. True or false
Answer:
False
Explanation:
In a food wed the arrows point to the animal that will eat the organism it's pointing away from
Which of the following is NOT a function of the catalyst?
Answer:
the correct Question is B-
Explanation:
A catalyst increases the rate of a chemical reaction by decreasing activation energy. So I used the power of marking out the ones i knew were incorrect. Hope this helps.
Help ASAP please been stuck on this for 2 days
Answer:
mRNA ( ribonucleic acid ) is the correct answer
hope this helps
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Compare and contrast sexual and asexual reproduction, including the advantages and disadvantages of each process.
Answer:
What are the advantages and disadvantages of both asexual and sexual reproduction?
Comparison chart
Asexual Reproduction Sexual Reproduction
Advantages Time Efficient; no need to search for mate, requires less energy Variation, Unique., organism is more protected
Disadvantages No variation - if the parent has a genetic disease, offspring does too. Requires two organisms, requires more energy
Answer:
Prokaryotes and eukaryotes vs. only eukaryotes
Mitosis and binary fission vs. meiosis
Both forms of reproduction
Two vs. four cells produced
Diploid vs. haploid cells produced
Advantages or disadvantages of each
Explanation:
where can the fewest h+ ions be found on the pH scale, and the fewest OH- ions
The lowest [tex]H^+[/tex] concentration on the pH scale would be 14 while that of the [tex]OH^-[/tex] concentration would be 0.
pH ScaleThe pH scale ranges from 0 to 14 with 0 being the most acidic and 14 being the most basic or alkaline.
The more the [tex]H^+[/tex] concentration of a substance, the lower the pH, and the more the [tex]OH^-[/tex] concentration, the higher the pH.
Thus, at the lower extreme of the pH scale, the concentration of [tex]OH^-[/tex] is fewest, and at the higher extreme, the concentration of [tex]H^+[/tex] is fewest.
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