Answer:
B & D
Explanation:
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PLEASE HELP GUYS!!Scientists think an "RNA world" existed on Earth long before DNA evolved.
Why do scientists think that RNA is a likely candidate to have been the first
genetic material?
O A. Some RNA can catalyze reactions.
OB. RNA is less complex than DNA.
OC. The Miller-Urey experiment yielded RNA but no DNA.
OD. Fossilized organisms containing RNA predate those containing
DNA.
Answer:
(D)
Explanation:
RNA has great capability as a genetic molecule; it once had to carry on hereditary processes on its own. It now seems certain that RNA was the first molecule of heredity, so it evolved all the essential methods for storing and expressing genetic information before DNA came onto the scene.
Answer:
Its B
Explanation:
Study this unusual food chain. What could ‘P’ represent?
a. Any normal insect that eats grains.
b. An insect that can make its own food.
c. A carnivorous plant like the Venus flytrap.
d. There is a mistake - nothing can match 'P'.
The correct option as to what P could represent in the food chain would be option C.
P could be a carnivorous plant such as Venus flytrap because these plants are able to get their food both by harnessing solar energy to photosynthesize and by feeding on flying insects.
On the other hand, P cannot be any normal insect that eats grains or makes its own food because according to the diagram, P also derives energy from the sun. Only plants and some microbes are able to photosynthesize.
Therefore, only a carnivorous plant is able to both photosynthesize and feed on insects for their foods when necessary and hence, can fill the space of P in the food chain.
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which two types of structures make up the earthworm's heart
Answer:
organ systems and specialized cells
Explanation:
Answer:
The correct answer is specialized cells and tissues
Explanation:
I just got it correct on my quiz. Good luck!
Which organism is likely to be in the bottom trophic level in a food chain?
A)Caterpillar
B)Bird
C)Hawk
D)Rose Bush
Need help here is the ss
Answer:
Hello Nestle
Explanation:
Im a big fan of your products and the things you make . Ive been using some of your stuff since , I was even born. Even though I use alot of the things you fabricate or make, I do have some complaints. I was feeded your product Nido when I was an offspring , My parents would feed it and I would be happy. Now that ive become older and have a child of my own I decided to feed him the same thing. But then I realized what if my child is allergic to it or it somehow affects his growth . Your product Nido says" nutrition solutions for each stage of childhood". And after making some research its says nothing can nurture babies except real satisfied milk , I hope this gets fixed thank you.
Fermentation is a chemical reaction that takes place in the cytoplasm and occurs when oxygen is Choose... . Byproducts of fermentation may include Choose... or Choose... . Fermentation yields Choose... ATP than the electron transport chain.
Answer:
Fermentation is a chemical reaction that takes place in the cytoplasm and occurs when oxygen is low or absent. Byproducts of fermentation may include lactic acid or ethanol. Fermentation yields less ATP than the electron transport chain.
Explanation:
Fermentation is a chemical reaction that occurs under anaerobic or low-oxygen condition whereby the NADH produced during glycolysis is oxidized to NAD⁺ with the production of lactic acid as well as other products such as ethanol.
Since oxygen is lacking, pyruvate and NADH produced in glycolysis cannot be oxidized. In order to produce energy in the form of ATP for the cells and tissues,the NAD⁺ is regenerated from NADH by the reduction of pyruvate to lactic acid by the enzyme lactate dehydrogenase. In some other organisms such as yeast and microorganisms, pyruvate is converted to ethanol and carbon dioxide.
The net production of ATP in fermentation process is 2 molecules of ATp much lesser than that produced in aerobic respiration.
Which hormonal imbalance would the nurse suspect in a client who has low serum sodium levels? epinephrine glucagon calcitonin aldosterone
Aldoaterone hormonal imbalance would the nurse suspect in a client who has low serum sodium levels.
What is the most typical reason for low sodium levels?
So a renal issue is the most typical cause of low sodium. The body retains excess water when the kidneys aren't working properly, which can happen with chronic renal disease or even brief dehydration. Additionally, the sodium level in the body is lowered by the body's sodium to water ratio.
Adrenal gland insufficiency affects your adrenal glands ability to produce hormones that help maintain your body's balance of sodium , potassium and water.
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please help :( I’m really stuck
Answer:
B? Mitosis?
Explanation:
in need a short answer about cancer and the pahse
Explanation: okay so cells have this mechanism to kill themselves if a bad mutation happens but when that breaks and the cell can longer do that it is considered a cancer cell the cell will continue to mutated and multiply if mutated enough it will be able to hide itself with regular cells, from the immune system after a long time it will get veins to give all the nutrition to the cancer cells making it grow more if lucky it will multiply and mutated but this mutations makes it think its a regular cell creating a cancer tumor
now cancer is beating cancer. eventually it will take over but you will have god cancer
If 5% of a DNA sample is made up of thymine, C, what percentage of the sample is made up of cytosine, A?
Answer:
95%
Explanation:
Which of the following statements is true?
A) Mitosis and meiosis have the same number of cellular divisions.
B) Mitosis is used for growth and repair of body cells.
C) Mitosis makes more cells than meiosis.
D) Mitosis makes more variety than meiosis.
Answer:
B
Explanation:
Mitosis has 1 meisosis has 2
Meiosis makes more cells than mitosis
Mitosis makes exact copies meisosis makes gentically differnt
pls help i’m between A and D I NEED THIS ASAP i’ll give branliest !!!!!!!!
Answer:
You're correct.
Explanation:
The answer is solar energy - chemical energy. So it's letter A.
Brainliest? Thanks!
Answer:
light is converted to chemical energy
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The boll weevil reduced cotton crops by up to 70 percent when the infestation was at its worst.
A.) true
B.) false
Answer:
A. true
Explanation:
What process do the animals (and plants) in the
rainforest use oxygen for?
Answer:
Animals and plants use oxygen for processing cellular respiration.
Explanation:
Most of all organisms use oxygen to undergo cellular respiration with the help of the mitochondria that powers energy. Cellular respiration is needed to obtain energy for survival. As products of cellular respiration, ATP energy is created, and carbon dioxide + water is released from the organism. Thus, an ecosystem like a rainforest with animals and plants use oxygen for processing cellular respiration.
Dna sequences in many human genes are very similar to the sequences of corresponding genes in chimpanzees. The most likely explanation for this result is that.
The most likely explanation for this result is that humans and chimpanzees share a relatively recent common ancestor.
Scientific research has shown that about 98.8% of the human genome matches with a chimpanzee genome. The occurrence of such similarities between genomes of two organisms predicts that both the organisms had a common ancestor in the near past.
The DNA studies of an organism help to determine how closely or distinctively related two species of organisms are. Organisms with a similar genome are considered to be having a common ancestor in the near past. As humans and chimpanzees have a vast similarity index between their genomes, this explains that both these organisms evolved from a common ancestor in the near past.
These evolutionary relationships help scientists to study how a particular organism evolved into the form that can be seen today.
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What are the advantages of differential staining procedures over the simple staining technique.
Answer:
The advantages of differential staining procedures over the simple staining technique are:
Explanation:
Different species of bacteria may be identified from one another by having different stains applied to them because of differential staining. Various stains used on bacteria will highlight their unique characteristics since different cells don't really stain in exactly the same manner. A gram stain is an illustration of a differential stain. A stain known as crystal violet is used in gram staining, which makes cells purple and may be used to separate gram-positive and gram-negative cell walls because it can be removed from the cell walls of gram-negative but remains on the gram-positive cell walls. While one cationic dye is applied by a simple stain, giving the clear cells some color so we can see it properly. But it's not always possible to distinguish various kinds of organisms. We can only notice their presence.
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How do small food molecules such as glucose get from ur gut to the cells
Answer:
The cells along the small intestine use primary active transport to ensure that glucose only flows one way: from digested food to the inside of cells. Active transport proteins use adenosine triphosphate (ATP), the cell’s energy storage molecule, to pump glucose into the cell, either with or against the concentration gradient.
Explanation:
hope this helps
Rearrange for the proper order of Mitosis:
Answer:
so imma say the numbers in order
4,5,6,3,2,1
Explanation:
hope dat helps if you need i can actually write it out
What is a Example of Newton 1st Law and how does it show inertia
Answer:
Newton's first law is the law of inertia: An object in motion will remain in motion until acted upon by an outside force.
Example:
a wheelbarrow rolling down a hill does not stop rolling until it crashes into a tree.
How is the DNA of prokaryotic cells different than eukaryotic cells?
animal cell example and major distinguishing characteristics
Answer:
Animal cells have slight differences to the eukaryotic cells of plants and fungi. The clear differences are the lack of cell walls, chloroplasts and vacuoles and the presence of flagella, lysosomes and centrosomes in animal cells. Plant and fungal cells have cell walls
compare and contrast solar energy and wind energy.
Explanation:
Both solar power and wind power are two sources that aim to generate energy in a manner that is clean and efficient. They only differ in the way that they achieve that aim: solar power makes use of the sun (both light and heat) while wind power makes use of the wind
What happens to molecules of a substance during convection
Answer:
Convection occurs when particles with a lot of heat energy in a liquid or gas move and take the place of particles with less heat energy. Heat energy is transferred from hot places to cooler places by convection. Liquids and gases expand when they are heated.
Explanation:
Help me pls! In your own words, explain how the information carried by mRNA is used in the ribosome to form proteins. Be sure to include the following words and phrases: nitrogenous base, amino acid, codon, polypeptide.
Answer:
the messenger RNA (mRNA) is decoded in a ribosome, outside the nucleus, to produce a specific amino acid chain, or polypeptide. The polypeptide later folds into an active protein and performs its functions in the cell
Explanation:
The information carried by mRNA is used in the ribosome to form proteins in the following way:
Messenger RNA is nothing more than a copy of the instructions contained in the gene, it is responsible for copying and carrying the exact sequence of amino acids (called a polypeptide) from DNA to the ribosomes.
In other words, the amino acid sequence of a protein comes from information stored in the base sequence of nucleic acids, specifically in the mRNA sequence.
This information written in a four-letter language, the nitrogenous bases (A, G, C, T), must be translated into a language that is based on 20 amino acids, known as the genetic code.The sequence of bases of the messenger RNA is the one that determines the amino acid sequence, and the one used, therefore, for the description of the code.The molecules in charge of transporting the amino acids to the ribosome and of recognizing the codons of the messenger RNA during the translation process are the transferring RNAs.Therefore, we can conclude that mRNA carries the exact amino acid sequence of DNA to ribosomes, where instructions are followed and protein synthesis proceeds.
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1.
All living things are composed of cells.
Which action is not accomplished by repeated cell
division?
A.
a plant developing new leaves
B.
a broken bone growing back together
C.
a plant using sunlight to make its own foods
food
D.
an eight-pound baby growing into a 100-pound
teenager

Answer:
C
Explanation:
Everything else has to do with growth but C is talking about food/energy.
A plant using sunlight to make its own foods is accomplished by repeated cell division.
What do you mean by cell division?Cell division is the process by which a parent cell divides into two daughter cells. Cell division usually occurs as part of a larger cell cycle in which the cell grows and replicates its chromosome before dividing.
There are two types of cell division: mitosis and meiosis. Most of the time when people refer to “cell division,” they mean mitosis, the process of making new body cells. Meiosis is the type of cell division that creates egg and sperm cells. Mitosis is a fundamental process for life.
In eukaryotic cells, or cells with a nucleus, the stages of the cell cycle are divided into two major phases: interphase and the mitotic (M) phase.
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a scientist is studying a population of fungi. she finds that the recessive allele for small spores has a frequency of 0.75. what frequency should she expect for the dominant allele?
If the scientist finds the frequency for recessive alleles to be 0.75, then she could expect the frequency for the dominant allele to be 0.25.
According to Hardy Weinberg equilibrium principle, the genetic variations like genotypes and frequencies of the alleles would remain constant from one generation to another in the absence of disturbing external factors. These disturbing factors can be mutations, selective mating, natural selection, gene flow and genetic drift. All of these factors disturb the equilibrium by introducing external alleles, thus suppressing the ability of an organism to carry its own alleles to the next generation.
In the absence of the disturbing factors, the allele frequencies (taken as p and q) are always constant, and would be equal to 1. This means that:
p + q = 1
Where p denotes recessive allele frequency while q denotes dominant allele frequency. If p = 0.75, then q would be:
q = 1 - 0.75 = 0.25.
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HELP ME PLEASE
All of the following are required for photosynthesis to occur EXCEPT:
A.) Sunlight
B.) carbon dioxide
C.) oxygen
D.) chloroplast
Answer:
C. Oxygen
Explanation:
Using Sunlight, Carbon, and Chloroplast plants turn all of that into carbohydrates and oxygen. That process is called photosynthesis. Were plants use to make themselves food.
Answer:
C, oxygen.
Explanation:
after photosynthesis finishes, the plant produces oxygen, thus, it is not required.
Help please
All life stems from a common ancestor. Which evidence best supports this statement?
OA anatomical structures
OB. fossilized algae and plants
OC.DNA from living organisms
OD presence of bone fragments in rock layers
Translate the following AUG CCC AUU AUC CGG
Answer:
These are proteins right??
Explanation:
if they are it means
double helix (transcribed strand)
DNA double helix
RNA transcribed
appropriate RNA anticodon
amino acids incorporated
Answer:
Met Pro lle lle Arg or TAC GGG TAA TAG GCC
Explanation:
wasn't sure if you wanted me to translate these into amino acids or DNA.
Why are the rainfall amounts in Medford and Lakeview similar?
PLEASE ANSWER QUICK!! WILL GIVE BRAINLIEST FOR BEST ANSWER !!
worksheet: the effect of landforms on weather // predicting weather explore 4
The amount of rainfall in Medford and Lakeview are similar due to the presence of similar environmental conditions, elevation and geography.
Factors affecting rainfallThe three factors that might influence the occurrence of rainfall or precipitation on a specific region are its latitude, the distribution of air pressure systems and global winds, and the existence of a mountain barrier. The latitude of both Medford and Lakeview are similar so that's why they experience similar rainfall.
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