What elements are always present in protein?
A. radium, boron, fluorine, and chlorine
B. mercury, iron, lead, and aluminum
C. carbon, hydrogen, oxygen, and nitrogen ( ✔ )
D. neon, argon, krypton, and copper
Explanation :Proteins are one of the primary constituents of living matter. They consist of long chains of amino acids, which are bonded together by peptide linkages and thus called polypeptides. There are about 20 amino acids, and the atoms most prevalent in these are carbon, hydrogen, oxygen, nitrogen, and sulphur.
The elements that are always present in protein is carbon, hydrogen, oxygen, and nitrogen. The correct option is C.
Proteins are large molecules made of amino acids that are crucial for a number of biological processes in living things. Proteins usually contain the following elements: carbon (C), hydrogen (H), oxygen (O), and nitrogen (N).
These components serve as the fundamental building blocks of amino acids, which are joined by peptide bonds to form protein chains.
The fundamental components that are consistently present in all proteins are carbon, hydrogen, oxygen, and nitrogen, while other elements, such as sulphur (S) and phosphorus (P), can also be found in some proteins.
Thus, the correct option is C.
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Life sciences about gaseous exchange please help.
Gaseous exchange is fundamental in aerobic organisms because oxygen is required to carry out cellular respiration.
What is cellular respiration?Cellular respiration is a series of chemical reactions by which aerobic organisms interchange oxygen and carbon dioxide with their surrounding environment.
During cellular respiration, oxygen is consumed to generate ATP and carbon dioxide is released.
In conclusion, gaseous exchange is fundamental in aerobic organisms because oxygen is required to carry out cellular respiration.
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How do plants photosynthesize in winter? When they shed their leaves.
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Most trees do 'slow down' during winter, and deciduous trees that lose their leaves shut down photosynthesis entirely. Trees with needles (evergreen trees) that are retained over winter can actually photosynthesize during the winter.#Let's Study
Which of the following is a correct pair?
Answer:
starch: polysaccharide is the answerExplanation:
mark me a brainliest tysmWhich of these causes evolution?
A. Random mating
B. Natural selection
C. No mating at all
D. Extremely large population sizes
Natural selection causes evolution. The correct option is B.
What is natural selection?Natural selection refers to the process that leads to the adaptation of organisms to their environment.
Natural selection forces either select for or against traits. Traits that aid organisms in adapting are selected for, while those that do not aid in adaptation are selected against.
Traits that are selected for are allowed to perpetuate in the population while those that are selected against gradually fade from the population.
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Egg of a bird represent an organ
It is a false statement that the egg of a bird represent an organ.
What is an organ?An organ is composed of many tissues that work together for the same purpose. Tissues in turn are composed of cells.
The egg of a bed is only composed of cells that divide rapidly hence the egg of a bird is not an example of an organ and the statement is false.
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How long does it take a lemon tree to produce fruit.
Answer: When grown outdoors in warm climates, regular lemon trees grow 20 feet tall and take up to six years to bear fruit. 1 For indoor lemons, you need a tree that stays small and delivers lemons sooner.
I AM SO CONFUSED PLEASE HELP THIS IS ON MY STUDY GUIDE FOR FINALS!!!!
The first figure makes reference to the energy flow in a ecosystem, whereas the second one refers to the steps of cellular respiration.
What is cellular respiration?Cellular respiration is a series of cellular reactions aimed at generating energy in the form of ATP.
Cellular respiration has three sequential steps, i.e., glycolysis, the Krebs cycle and oxidative phosphorylation.
In conclusion, the first figure makes reference to the energy flow in a ecosystem, whereas the second one refers to the steps of cellular respiration.
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Is natural selection changing the traits in a population of fish in Loberg Lake? How?
The light reactions of photosynthesis occur within the _____ of the chloroplast and the calvin cycle reactions occur within the _____ of the chloroplast.
The light reactions of photosynthesis occur within the Thylakoid membrane of the chloroplast and the calvin cycle reactions occur within the Stroma of the chloroplast.
What is the meaning of photosynthesis?Photosynthesis is defined as a process in which solar energy is captured and organic molecules are produced. This process is fundamental to the survival of life on the planet and is the main way in which energy enters the biosphere.
In this case, looking at some parts that occur in the photosynthesis process, we have that the Thylakoid membrane of the chloroplast and the calvin cycle reactions occur within the Stroma of the chloroplast.
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what is the answer to this question i need help
Answer:
B. where ribosome assembly begins
During transcription, what happens to the RNA polymerase if a repressor protein attaches to the operator?
It begins transcription.
It begins translation.
It cannot attach to enzyme 1.
It cannot attach to the promoter
Answer:
It cannot attach to the promoter.
Explanation:
just did test
what happens when a cold front replaces a warm front
Answer: It creates what's called an occluded front.
Explanation: When a cold front overtakes a warm front, it creates what's called an occluded front that forces warm air above a frontal boundary of cooler air masses.
Question 11 of 30
Under ideal conditions, how do allele frequencies change over time?
A. The frequency of the recessive allele increases in each generation.
B. The allele frequency does not change from one generation to the
next.
C. The frequency of the dominant allele increases in each generation.
O D. The alleles eventually reach a 50/50 balance.
The frequency of the dominant allele increases in each generation. Thus, the correct option is C.
What is natural selection?Natural selection is a process in which more environment-adapted organisms tend to survive and reproduce more frequently than less environment-adapted ones.
Because rare alleles are typically found in heterozygotes, the initial increase in frequency of a rare, advantageous, dominant allele is faster than that of a rare, advantageous, recessive allele. Therefore, natural selection won't be able to "see" a new recessive mutation until it is prevalent enough to manifest in homozygotes.
Once a population is in Hardy-Weinberg equilibrium, its frequency distribution won't vary from generation to generation.
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2. List the gametes of a plant of genotype SSYy. need answer fast
Answer:
Ss, Yy, SY and sy
Explanation:
What is the molecule that DNA
wraps around to become
chromosomes?
A. histones
B. RNA
C. lipid
Why does young children and elders need more protein
Are sea water, rocks, sand and silt abiotic or biotic?.
Answer:
they are abiotic
Explanation:
After reading the passage about acupuncture, identify which statement supports the
claim that acupuncture relieves pain.
It is ancient, alternative medicine that has been used for thousands of years.
If you do research, you can find the specific types of pain that acupuncture will effectively relieve.
A New York Times reporter wrote about the effectiveness of this treatment in relieving his surgery pain.
The National Institutes of Health found it effective in reducing pain and other symptoms, but it is not clear how it works.
Number 4 is the right response. Although the mechanism of action is unclear, the National Institutes of Health found it to be beneficial in lowering pain and other symptoms.
What do you mean by acupuncture?A professional inserts wired-thin needles into certain locations on the body during acupuncture, an age-old Chinese therapy. The needles numb the discomfort. Some people think the method works, while others claim it just has a placebo effect. The National Institutes of Health discovered that it works well to lessen pain, nausea, and vomiting, although it is still not clear how its works.
The National Institutes of Health found acupuncture to be beneficial in lowering pain and other symptoms, although it is unclear how it works, according to the passage on acupuncture, which supports the claim that acupuncture improves pain.
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Which of the following best describes why in general there are more hares in the ecosystem than foxes.
In 1945 there was a major event that caused the number of hares to dramatically increase. That is why there continues to be more hares than foxes here.
Hares are a lot smaller than the foxes, so more of them can fit into different niches. They can hide better in all of the bushes and behind rocks.
This is because if only 10% of the energy gets passed on to the next trophic level, then you need to have more lower level animals available to support the animals higher up the food chain. The fox must eat several hares to gain enough energy for growth and development
Answer:
C
Explanation:
The reason why there are more hares than foxes in the ecosystem is because if only 10% of the energy gets passed on to the next trophic level, then you need to have more lower level animals available to supports the animals higher up the food chain. The fox must eat several hares to gain enough energy for growth and development.
Answer:
C: This is because if only 10% of the energy gets passed on to the next trophic level, then you need to have more lower-level animals available to support the animals higher up the food chain. The fox must eat several hares to gain enough energy for growth and development
Explanation:
what is the relationship between allele frequency's and a gene pool.
Which human activity contributes the most carbon dioxide to the atmosphere?
Ofishing
O breathing
O burning fossil fuels
O Farming
Which of the following has had the greatest economic consequences for agriculture in recent years? (4 points)
Irrigating land
Intense storms
Melting ice caps
Overfishing oceans
One of the greatest economic consequences of agriculture in recent years is overfishing.
Economic consequences of agricultureAgricultural activities have led to overfishing.
Overfishing leads to a reduction in fish biodiversity and the loss of important species that could serve as food, drugs, or industrial materials for the use of man or his livestock.
Overfishing means that there will not be enough fish for humans in the nearest future. This may result in a malnourished human population.
Overfishing can also cause ecological problems such as disruption to food chains.
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You can separate a mixture of sand and copper(II) sulfate pentahydrate using filtration. What difference in properties enables the separation of the two solids by filtration
The property difference that enables this separation is: Difference in solubility
Solubility can be defined as the ability for a substance that is the solute to mix and form new substance with another substance which is the solvent
Solubility differences can be used to separate the two substances that is Sand and copper (II) sulfate. Because one is soluble in water whereas the other is not soluble in water.
In conclusion, The property difference that enables this separation is: Difference in solubility
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difference between yeast and mushroom
Answer:
Fungi are mostly multicellular, consisting of fungal hyphae. Both yeast and fungi are saprotrophs, which secrete enzymes on decaying organic matter. The main difference between yeast and fungi is their structure.
Explanation:
How does cpr differ in an unresponsive choking victim?.
1. The ribosomes of which of these pairs of organisms would be expected to be most similar?
A.
Libytheinae and Charazinae
B.
Libytheinae and Calinaginae
C.
Satyrinae and Calinaginae
D.
Satyrinae and Charazinae
2.The data presented would best support the theory of evolution if which of the following were also true?
A.
The Nymphalidae are more advanced than other butterflies.
B.
The Nymphalidae have more mutations than other butterflies.
C.
The Nymphalidae share a common ancestor with other butterflies.
D.
The Nymphalidae live in different geographies from other butterflies.
In this case, the ribosomes organelles of Satyrinae and Charazinae are expected to be most similar.
What is evolution?Evolution refers to the descendence with modification and therefore differences are lesser in close species.
According to the tree, the statement 'Nymphalidae share a common ancestor with other butterflies' best supports the theory of evolution.
In conclusion, in this case, the ribosomes organelles of Satyrinae and Charazinae are expected to be most similar.
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Compare between red blood cells and white blood cells
And write both
Answer:
The main difference between red blood cells and white blood cells is their function; red blood transport oxygen throughout the body while white blood cells are involved in the defense of the animals, destroying pathogens which invade the body cells.
Explanation:
what is the function of each stage of meiosis?
Answer:
Before the cell enters meiosis, the chromosomes in a cell are duplicated (during the interphase). In meiosis I, the chromosomes condense along the center of the nucleus and pair with their homologues during crossing over. Next, the pairs of chromosomes separate and move to opposite ends of the cell.
Explanation:
A scientist wants to test if soaking berries in hot water will prevent them from getting moldy. What is the independent variable? What is the dependent variable?
WILL GIVE BRAINLIEST
Hot water is independent variable whereas berries are dependent variable.
What is the independent variable and dependent variable?The independent variable is hot water whereas the dependent variable is berries because berries shape depends on the hot water but the hot water can't be affected by the berries.
So we can conclude that hot water is independent variable whereas berries are dependent variable.
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What are streptococci?
A. cocci that form a line
B. cocci that form clusters
C. cocci that form a ring
Answer: Streptococci are Gram-positive, nonmotile, nonsporeforming, catalase-negative cocci that occur in pairs or chains. Older cultures may lose their Gram-positive ...
Chapter 13streptococcus · General Concepts · Antibiotic Treatment
Explanation: