Answer:
The genetic code is degenerate and therefore mutations may go unnoticed.
Explanation:
Each triplet of nucleotide bases, which is known as a codon, encodes for a specific amino acid during translation. However, a single amino acid may be coded by different codons. It is for that reason that the genetic code is considered to be degenerate. In this case, Lysine amino acid can be encoded by both TTT (UUU in the mRNA) and TTC (UUC) codons, thereby a mutation T>C at the third nucleotide codon position does not affect the resulting protein (i.e., it is a silent mutation).
3.
A behavioral adaptation when an animal becomes inactive in the winter is _____.
camouflage
migration
sleeping
hibernation
Is tetracycline selectively toxic?
What you know about photosynthesis
Answer:
1. Plants use photosynthesis.
2. Photosynthesis uses water, carbon dioxide, and sunlight to make sugar.
3. Photosynthesis makes oxygen for animals to breathe.
Where do plants access the nutrients they need?
WARNING: This answer is NOT technical! ⚠
Plants can get their nutrients from the ground and dirt. But they grow using the carbon around them (Like the carbon dixiode we breathe out).
Make a list of the energy carriers involved in the Krebs cycle. Include their names before and after they accept the electrons.
84. The carries blood rich in nutrients and oxygen to the fetus.
Answer:
The umbilical cord? (might be wrong tho)
Answer:
The umbilical vein carries oxygenated, nutrient-rich blood from the placenta to the fetus, and the umbilical arteries carry deoxygenated, nutrient-depleted blood from the fetus to the placenta
Explanation:
hope it becomes helpful to you ☺️☺️
good luck
pls help me. with the help of diagram describe the structure of stomach
Answer:
The stomach is a muscular organ located on the left side of the upper abdomen. The stomach receives food from the esophagus. As food reaches the end of the esophagus, it enters the stomach through a muscular valve called the lower esophageal sphincter. The stomach secretes acid and enzymes that digest food.
Hope this helps:)
What are the possible results of speciation?
Answer:
Speciation is an evolutionary process by which a new species comes into being. A species is a group of organisms that can reproduce with one another to produce fertile offspring and is reproductively isolated from other organisms. Speciation can be driven by evolution, which is a process that results in the accumulation of many small genetic changes called mutations in a population over a long period of time. There are a number of different mechanisms that may drive speciation. One of these is natural selection, which is a process that increases the frequency of advantageous gene variants, called alleles, in a population. Natural selection can result in organisms that are more likely to survive and reproduce and may eventually lead to speciation. A second process called genetic drift describes random fluctuations in allele frequencies in populations, which can eventually cause a population of organisms to be genetically distinct from its original population and result in the formation of a new species.
Explanation:
How do coastal wetlands protect the inland systems from wind and waves caused by storms?
A)
Coastal wetland trees absorb the energy of storms.
B)
Coastal wetland trees slow down wind and water caused by storms.
C)
Coastal wetland trees redirect water flow back into the atmosphere.
D)
Coastal wetland trees strengthen levees.
Answer: It’s B
Explanation:
Just took the test!
Answer:
B
Explanation:
All of the following are examples of convection currents, except
Answer:C, water flowing through pipes
Explanation:the answer is C because convection is when molecules are traveling from one place to another place instead of jiggling back and forth, so when water flow through the pipe it’s the substance that is moving which makes it wrong and an answer!
Answer:
C
Explanation:
5 Clear Mark for Review Sacculina carcini is a barnacle that attaches to the underside of the green crab. The barnacle finds a hole in the green crab's exoskeleton, then uses microscopic hairs to feed on nutrients from the green crab's blood. The barnacle also lays its eggs in the green crab reproductive system, which sterilizes the green crab. Which term describes the role of S. carcini in this relationship?
Answer:
S. carcini is a parasitic barnacle species
Explanation:
Parasitism: In this case, one of the species is beneficiated, while the other suffers a consequence, reducing its fitness. These interactions are mostly about nutrition, although there might be other benefits too. Some parasite species might coexist with their host, while some others might get them ill to the point of causing death. Parasitic attacks might be very nocive, and even though they are not lethal in a short period of time, they might slowly kill the host.
Parasitic species consume part of the host, but not the whole body. They develop an intimate relationship with their host.
The Host increases the fitness of the parasite speciesThe parasitic species decreases the fitness of the host.By taking the nutrients from the green crab's blood and sterilizing it, the barnacle causes a decrease in the fitness of the crab. The crab becomes weaker and its survival chances decrease, and they have no opportunity to reproduce. Meanwhile, the barnacle gets stronger and reproduces normally.
A sudden increase in the number of producers in an ecosystem would first
affect the population of:
carnivores
O saprophytes
decomposers
O herbivores
Question 3
25 pts
Answer:
Herbivores
Explanation:
Herbivores are the ones who eat producers and nothing is eaten by producers, so everything else affected by this change would be affected through the herbivores
hope this helps!
You were with your younger cousin playing at the park and he has mixed up his legos in the sand.
Explain how you could separate this mixture.
Answer:
You can use a tea net to separate the Legos and the sand. When you scoop up the sand into the net, the sand will be sifted away because it is smaller than the holes in the tea net. But, the LEGOs are much bigger, so they will remain inside the net.
How do enzymes reduce the amount of activation energy needed to make a chemical reaction go?
Answer:
Enzymes reduce the amount of activation energy needed by breaking substrate molecules
Explanation:
Enzymes break down substrate molecules to lower the amount of activation energy required.
What is activation energy?The least amount of energy necessary to bring atoms or molecules into a state where they may cause chemical transformation or physical transport is known as the activation energy in chemistry.
The differential of energy content between atoms or molecules in an active or transition-state configuration and the same atoms and molecules in their original configuration is known as the activation energy in transition-state theory. In mathematical formulas for values like the reaction rate constant, the activation energy is typically denoted by the symbol Ea.
Experimental rate constants or diffusion coefficients that are determined at various temperatures are used to calculate activation energies.
Therefore, Enzymes break down substrate molecules to lower the amount of activation energy required.
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A: None of the potential offspring would be male, because the potentially male zygote would have two X chromosomes, and the Y chromosome would be ignored.
B: The male offspring would all be red-green color-blind, because of interference from alleles on the Y chromosome.
C: The male offspring would have full-color vision, because of the presence of the extra X chromosome
D: There would be no change to the phenotypes of the possible offspring, because the extra X chromosome would not be active.
Answer: C the male offspring would all be red-green color-blind, because of interference from alleles on the Y chromosomes
Explanation: College board got it correct
The male offspring would all be red-green colour-blind, because of interference from alleles on the Y chromosome. Hence, option B is correct.
What is colour blindness?a diminished capacity to tell some colors apart. Frequently, the condition is hereditary. Medications and specific eye conditions are additional factors. Men are affected more than women.
Inherited color blindness is not treatable. Treating the underlying issue may be helpful if another condition is the cause of color blindness.
The X chromosome is where the genes that might cause red-green color blindness is handed down. Men are more likely than women to have red-green color blindness since it is X-chromosome-inherited. This is due to the fact that males inherit just one X chromosome from their mothers. Hence, option B is correct.
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Which functions are carried out by the water vascular system? Check all that apply.
movement
reproduction
respiration
transportation of food
transportation of water
Answer:
respiration, movement, transportation of water
Explanation:
Answer:
Movement, respiration, transportation of food, and transportation of water.
Explanation:
this is correct on edge :)
Use your knowledge of amino acids for energy metabolism to select the term that best completes each description. Glucose cannot be made when amino acids are converted to_________ . In the TCA cycle, some amino acids enter directly and, therefore, can continue in the cycle to generate energy and_______ . When is available, the body can use and glycerol to make some non-essential amino acids.
Answer:
Acetyl CoA; glucose
Explanation:
Acetyl-CoA is a molecule known to be part of different reactions during carbohydrate, protein, and lipid metabolism. Pyruvate (also known as pyruvic acid) is a molecule whose decarboxylation produces acetyl-CoA. Glucose cannot be synthesized when amino acids are converted to Acetyl CoA because this molecule (Acetyl CoA) cannot be converted back to pyruvate. The citric acid cycle (CAC), also known as the tricarboxylic acid (TCA) cycle, is a group of biochemical reactions that release energy by oxidation of acetyl-CoA obtained from sources such as proteins, carbohydrates and fats. During amino acid metabolism, glucogenic amino acids and TCA intermediates can be converted into glucose through gluconeogenesis.
Identify the 3D shape shown below.
Choose 1 answer:
Rectangular prism
Square pyramid
Triangular prism
The 3D figure is a triangular prism
Answer:
The answer is C (Triangular Prism)
Explanation:
what happens when oceanic crust collides with continental crust at plate boundary
Explanation:
When oceanic crust converges with continental crust, the denser oceanic plate plunges beneath the continental plate. This process, called subduction, occurs at the oceanic trenches. The entire region is known as a subduction zone. Subduction zones have a lot of intense earthquakes and volcanic eruptions.
Plz help me I am timed
Answer:
geyser
Explanation:
Know what atomic mass and atomic number represent
Question 3 of 10
Which of the following would cause an error in DNA replication?
A. DNA polymerase pairing C with G
B. The original DNA strands never being separated
C. DNA ligase connecting chunks of DNA
D. DNA polymerase checking the DNA
A student is studying the levels of organization in living things and creates a table to give examples of the different levels.
Which of these should the student write as an example of the organism level of organization?
A. sparrow
B. stomach
C. muscle tissue
D. culture of bacteria
Answer:A. sparrow
Explanation:
PLEASE HELP///3. Heather had a color blindness test, and she was surprised to discover she suffered from red-green colorblindness. She told her biology teacher, who said, “Your father is color-blind too, right?” How did her teacher know this? Why did her teacher not say the same thing to the color-blind males in the class?
Answer:
In order for a woman to have the colorblind trait, they need to be X^cX^c, meaning that they have to get the trait from both their parents. Males can either have X^cY or X^CY and since Heather has it, it is definitive that her father had X^cY, which means that he is colorblind. Males in her class, on the other hand, can get it from either their mother or father.
Explanation:
Hope this makes sense!!
What structure is found only in eucaryotic cells
Answer:
only eucaryotic have a nucleus and membrane-bound structures called organelles.
Explanation:
Investigator Sheer is testifying about DNA evidence she found at the crime scene that matches the suspect on trial. The prosecutor asks Investigator Sheer to explain her conclusion that the DNA samples matched.
What would be a good explanation for her to give to the jury?
That at least 10 different points on the two samples matched
That the DNA profile matches someone with the suspect's hair color and skin tone
That she found one point that matched on the two DNA samples
That the DNA samples showed no clear points in common
Answer:
That at least 10 different points on the two samples matched
Explanation:
I would say this because it seems like the most reliable way to explain her conclusion that the DNA samples match.
Which of the following is not a chemical reaction that decomposes rock
O oxidation
O hydrolysis
O carbonation
O replacement
Answer:
replacement
Explanation:
I hope its helps you
try to follow me
The two sounds heard through the stethoscope during a heartbeat are known as lub and dub. If the doctor detects an unusual lub
sound, evaluate which description could explain the atypical sound.
Answer: the description that could explain the atypical sound is known as HEART MURMURS.
Explanation:
The doctor makes use of instruments like the stethoscope to listen to the sounds of the heart while examining a patient. The sound heard in a normal heart beat is described as a "lub" and a "dub" sound.
The "lub" sound, which is called the first heart sound, is associated with closure of the atrioventricular valves at the beginning of a systole and the "dub" sound,which is called the second heart sound, is associated with the closure of the semilunar ( aortic and pulmonary) valves at the end of systole.
HEART MURMURS usually occurs when there are abnormalities of the valves which may occur due to congenital heart defects. It is classified according to when it occurs and these includes:
--> systole murmurs: these occurs during the first heart sound and,
--> Diastole murmurs: these occurs during the second heart sound.
Therefore the description that could explain the atypical sound is known as HEART MURMURS
Answer:
b.) the mitral valve does not close after the systolic phase.
5 The theory of plate tectonics was, at first, rejected by most scientists. Now most geologists accept that tectonic plates exist and that these tectonic plates can and do move. What is responsible for the change in how scientists think about plate tectonics? A New evidence was discovered that made scientists revise their ideas. B. Tectonic plates have begun to move faster and faster over time. C There are more people studying science now than in the past. D Scientists can now travel underneath the plates and observe their motion.
Tectonic plates have begun to move faster and faster, leading to a change in scientists' thinking about plate tectonics. Hence the correct option is (B).
What is Tectonic Plates?
Tectonic plates are also known as lithospheric plates. It is a massive, irregularly shaped slab of solid rock that is composed of both continental and oceanic lithosphere. The size of the plates varies greatly from a few hundred to thousands of kilometres.
The plates are the largest in the Pacific and Antarctic Oceans. Its thickness also varies greatly, ranging from less than 15 km for young oceanic lithosphere to about 200 km or more for ancient continental lithosphere.
Earth's rigid surface known as the lithosphere acts as a skin that rests and slides over a semi-molten layer of rock called the asthenosphere. It can break into many different plates because of differences in the density of rock and differences in subsurface heating between one region and the next.
Thus, Tectonic plates have begun to move faster and faster, leading to a change in scientists' thinking about plate tectonics. Hence the correct option is (B).
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What is the equation for calculating the change in water potential? In other words, this equation allows you to determine which way the water will move in response to two different concentrations.
Answer:
The correct answer is - Ψ = ΨS + ΨP.
Explanation:
The movement of the water in a solution where is two different concentrations present can be determined by measuring the water potential (Ψ).
Water potential (Ψ) can be determined by the equation that depends on these two factors osmotic potential represent by ΨS and pressure potential represent by ΨP.
Ψ = ΨS + ΨP.