Answer:
No sounds can be heard in outer space because sound waves require a medium, such as air, to travel through.
Explanation:
What is the genotypic ratio of the following cross? RR X Rr ?
100% Red
2:20
3:1
O
2:2:1
Answer: the genotypic ratio is 2:2:0
Explanation:
RR x Rr —> RR Rr RR Rr
Methane is a molecule that has four hydrogens covalently bonded to one carbon atom and is the major component in
Answer:
hydrocarbons
Explanation:
In 3–5 sentences, compare and contrast the flow of matter and energy in each
trophic level for land-based ecosystems and marine ecosystems. How and why
are they similar, and how and why are they different? (4 points)
Answer:There is a fundamental difference in the way energy and matter flows through an ecosystem.Matter flows through the ecosystem in the form of the non-living nutrients essential to living organisms. When a living organism dies, nutrients are released back into the soil. These nutrients then are absorbed by plants, which are eaten by the herbivores. Matter, once again, is passed on. The herbivore is eaten by a carnivore (and matter is yet again transferred therein). Ultimately, when the carnivore dies, matter is returned back to the soil by the decomposers and the cycle repeats. So you see, matter is recycled in the ecosystem.Unlike matter, energy is not recycled through the system. A part of the energy is lost at each stage.
Explanation:
Transcribe the following DNA strand. Then translate the tRNA strand you wrote.
Answer:
Transcription into mRNA strand will produce: ACU CAG CUG ACC GAC UGG CAU CUG
Translation into amino acid sequence will yield: Threonine- Glutamine- Leucine- Threonine- Aspartic acid- Tryptophan- Histidine- Leucine
Explanation:
- Transcription is the process by which DNA template is used to synthesize a mRNA molecule in the nucleus (eukaryotes). The transcription, which is carried out by an enzyme called RNA polymerase, follows the complementary base pairing rule i.e. A-T, G-C. Note that Uracil replaces Thymine in the RNA molecule.
Based on this question in which a DNA strand was given as follows: TGA GTC GAC TGG CTG ACC GTA GAC
The mRNA strand that will result from transcribing this DNA will be: ACU CAG CUG ACC GAC UGG CAU CUG
- Translation is the process by which mRNA strand is used to synthesize amino acid sequence (protein) in the ribosomes. In the mRNA sequence, nucleotides are read in a group of three called CODONS. Each codon specifies an amino acid. Based on the mRNA sequence as follows: ACU CAG CUG ACC GAC UGG CAU CUG, the amino acid sequence that will result after using the genetic code will be: Threonine (Thr)- Glutamine (Gln)- Leucine (Leu)- Threonine (Thr)- Aspartic acid (Asp)- Tryptophan (Try)- Histidine (His)- Leucine (Leu).
a gene carries the __ for a trait
Which of the following changes in an ecosystem is most likely to result in a
species moving toward one of the poles?
A. An increase in its predator numbers
B. Climate cooling
O C. The intrusion of an invasive species
O D. Climate warming
Answer:
Climate warming
Explanation:
Answer:
The answer is D-Climate Warming
Explanation:
Once an area gets to a point of extreme warmth where the species genuinely can't handle it anymore, they'll migrate closer to the poles.
the stem is responsible for providing support to the plant. A _______ is a type of stem that grows underground. it is capibile of asexual reproduction and _______ food.
the options for the first blank is bract, rhizome, and runner.
the options for the second one are storing, producing, and transporting
Answer:
I think rhizome and producing is a answer.I am sure for first one but not for second
Answer:
the first blank is rhizome. the second is storing.
where do we find the most gases in the atmosphere.
Answer: The most gas in the atmosphere is nitrogen, with oxygen second. Argon, an inert gas, is the third most abundant gas in the atmosphere.
Where are most gases found in the atmosphere?
Earth's atmosphere is composed of about 78% nitrogen, 21% oxygen, and one percent other gases. These gases are found in layers (troposphere, stratosphere, mesosphere, thermosphere, and exosphere) defined by unique features such as temperature and pressure.
(Please give brainiest :) I'm trying to reach my goal) Hope this helped :)
Explanation:
Characteristics of Life
Life is
1 - Made up of cells
Cells are the basic unit of life. Living things are composed of cells.
2- Cellular Organization
Living things are able to organize simple things into complex things. Humans can organize cells that are alike
into tissues and organs
3 - The Chemicals of Life
Living cells are composed of similar chemicals, water, carbohydrates, proteins, lipids, and nucleic acids.
4. Energy Use
Living things use energy to repair and function your brain cells are using energy right now.
5 - Response to Surroundings
Living things react to changes environment. Populations evolve over time. You respond to your surroundings
when you are startled by a car horn
6 - Growth and Development
Living things grow from the energy found in organic molecules and develop, becoming more complex over time.
7. Reproduction
Living things duplicate their genetic code and produce offspring.
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Steven Hawking is on record as saying that viruses can be considered a form of life.
Considering the list above, what might be his evidence?
A)
Item 5
B)
Items 1-
Answer:
a
Explanation:
Number a is the real evidence of that question
Cells are the basic unit of life. Living things are composed of cells.
What are characteristics of life?All living creatures are aware of environmental changes and react to them. What happens, though, if you think you're treading on a rock but in fact, you're on a turtle shell.
Every living thing evolves and grows. For instance, a plant seed may appear to be a lifeless stone, but given the proper circumstances, it will grow and become a plant. Animals also change and advance.
Even the most basic life forms have a complicated chemical makeup. Large, intricate molecules make up living things, and in order to stay alive, they go through a great number of intricate chemical changes.
Therefore, Cells are the basic unit of life. Living things are composed of cells.
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Collect data: Blood carries many vital substances. Four of these are listed above the Microscopic view. Oxygen and sugar are needed by all body cells. Carbon dioxide and urea are waste products. What are the concentrations of each substance in this sample?
Oxygen:
Carbon Dioxide:
Sugar:
Urea:
Answer:
Explanation:
in the given sample of blood concentration of all the comonents is normal. the concentration of urea is 2.6 to 6.5 mM, concentration of carbon dioxide is 23-29 meq/L, while concentration of glucose ad oxygen are 0.9 g and 20.1 ml respectively.
Blood is the component of the circulatory system which is essential for the transport of gases and excretion of waste products. It is crucial for nutrient and oxygen supply to the body.
The concentration of oxygen was 95.6 mmHg, carbon dioxide 39.3 mmHg, Sugar 115.5 mg and urea 13 mg.
The vital substance of blood can be explained as:Red blood cells are called erythrocytes that are responsible for oxygen transportation through the hemoglobin component to the body parts while on their way back it carries the carbon dioxide.Sugar is the major form of energy needed by the body for functioning which enters the blood from the liver.Urea is the waste complement removed with the help of blood collected from the liver and excreted by kidneys.Therefore, the normal concentration of blood substances is oxygen 95.6 mmHg, carbon dioxide 39.3 mmHg, Sugar 115.5 mg and urea 13 mg.
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Mutations result in changes to genotype that can result in changes in phenotype. Explain how a mutation causes a change in the genotype of an organism AND may result in a change in the phenotype of an organism.
Answer:
A mutation can alter the structure/function of a particular protein, thereby also altering the phenotype resulting from this new variant
Explanation:
A mutation can be defined as a genetic change in the genome of an organism. Some mutations are capable of modifying the expression and/or structure of the proteins, while other mutations (known as silent mutations) have no effect on the resulting proteins. When mutations occur within the gene region encoding a protein (i.e., exons), they are potentially capable of producing a faulty protein. For example, a mutation can alter the Open Reading Frame (ORF) of the resulting protein, thereby inactivating it. The mutations that alter the structure and/or function of the protein can also alter the resulting phenotype associated with the expression of this protein. For example, a mutation within a gene that encodes a key enzyme can potentially alter the binding site of the protein, so the resulting mutated enzyme cannot bind to the substrate anymore. In consequence, this mutation alters the phenotype of the individual who is not more able to carry out the metabolic reaction catalyzed by the faulty enzyme.
Cite particularly the difference in the synthesis of the two biomolecules in animals and plants.
Answer:
The preceding section reviewed the major metabolic reactions by which the cell obtains and stores energy in the form of ATP. This metabolic energy is then used to accomplish various tasks, including the synthesis of macromolecules and other cell constituents. Thus, energy derived from the breakdown of organic molecules (catabolism) is used to drive the synthesis of other required components of the cell. Most catabolic pathways involve the oxidation of organic molecules coupled to the generation of both energy (ATP) and reducing power (NADH). In contrast, biosynthetic (anabolic) pathways generally involve the use of both ATP and reducing power (usually in the form of NADPH) for the production of new organic compounds. One major biosynthetic pathway, the synthesis of carbohydrates from CO2 and H2O during the dark reactions of photosynthesis, was discussed in the preceding section. Additional pathways leading to the biosynthesis of major cellular constituents (carbohydrates, lipids, proteins, and nucleic acids) are reviewed in the sections that follow.
Go to:
Carbohydrates
In addition to being obtained directly from food or generated by photosynthesis, glucose can be synthesized from other organic molecules. In animal cells, glucose synthesis (gluconeogenesis) usually starts with lactate (produced by anaerobic glycolysis), amino acids (derived from the breakdown of proteins), or glycerol (produced by the breakdown of lipids). Plants (but not animals) are also able to synthesize glucose from fatty acids—a process that is particularly important during the germination of seeds, when energy stored as fats must be converted to carbohydrates to support growth of the plant. In both animal and plant cells, simple sugars are polymerized and stored as polysaccharides.
Gluconeogenesis involves the conversion of pyruvate to glucose—essentially the reverse of glycolysis. However, as discussed earlier, the glycolytic conversion of glucose to pyruvate is an energy-yielding pathway, generating two molecules each of ATP and NADH. Although some reactions of glycolysis are readily reversible, others will proceed only in the direction of glucose breakdown, because they are associated with a large decrease in free energy. These energetically favorable reactions of glycolysis are bypassed during gluconeogenesis by other reactions (catalyzed by different enzymes) that are coupled to the expenditure of ATP and NADH in order to drive them in the direction of glucose synthesis. Overall, the generation of glucose from two molecules of pyruvate requires four molecules of ATP, two of GTP, and two of NADH. This process is considerably more costly than the simple reversal of glycolysis (which would require two molecules of ATP and two of NADH), illustrating the additional energy required to drive the pathway in the direction of biosynthesis.
. Which statement best describes arteries? A. They have thick walls and transport blood away from the heart. B. They have thick walls and transport blood toward the heart. C. They have thin walls and transport blood away from the heart. D. They have thin walls and transport blood toward the heart.
Answer:answer is 1
Explanation:
because i’m like that and i know
John Terborgh, tropical ecologist at Duke University, asserts that in order to save tropical forests, citizens of industrial nations are going to have to pay developing countries. Do you agree
Answer:
I do agree
Explanation:
As a personal opinion, I do agree with this statement. Citizens of developing countries use these rain forests for many reasons. One of which is for survival they cut down and use what they need in order to gather the resources that they need and build their habitats. This goes slowly destroying the rainforests. The other reason is that these citizens many times sell the rights to the rainforest land to mining companies that ultimately destroy the rainforest for its resources. The only way to prevent both of these from happening is by paying these developing countries to protect the rainforest instead of profiting from it.
When increasing the size of muscles or building muscle mass ____________. Group of answer choices muscle soreness indicates the muscles are growing delayed onset muscle soreness indicates the muscles are growing lactic acid build up triggers muscles to grow micro tears signal the muscles to grow
Answer:
A. soreness indicates the muscles are growing
D. micro tears signal the muscles to grow
Explanation:
Muscle soreness is one of the indication of muscles are growing as while doing exercise, some inflammation takes place to get bigger and stronger muscles. Some pain signals are sent by the body to make it feel soreness after intense exercise.
Micro tears signal also indicates muscles growth as after intense workout, a certain amount of soreness is felt by our body and these micro tear signals to repair and replenish the muscle tissue that eventually accumulate to form muscle mass.
Hence, the correct answers are: "A. and D.".
Which is one factor that increases the speed of a sound wave?
O higher temperature
O lower temperature
O traveling in a liquid rather than a solid
O traveling in a gas rather than a liquid
Answer:
A
Explanation:
During Prophase I replicated homologous chromosomes pair up and undergo synapsis. What testable question is generated regarding synapsis and genetic variability by Figure 1?
Answer:
A
Explanation:
the larger the loci distance the more chances there is for a crossing voer to occur.
Do green leaves absorb the maximum amount of light? If not, what color of leaf would
absorb more light?
Answer:
Chlorophyll a is the chief pigment associated with photosynthesis. As we can see,chlorophyll a absorbs red and blue wavelengths to a higher extent. Green light isn't rejected but rate of photosynthesis is more with red and blue wavelengths of light.
Explanation:
The spectral absorbance of photosystems and chloroplasts is lowest for green light...
All plants, however, has chlorophyll a, which absorbs most strongly at ~450 nm, or a bright blue color.
in what ways can overpopulation be beneficial to differential reproductive success?
Answer:
Differential reproduction is called the one that occurs as a result of the differences between the individuals that make up a society or sample, where it is those with comparative advantages who manage to reproduce, while those who do not have said advantages tend to die out. It is, in short, a practical application of Charles Darwin's theory of natural selection.
Thus, if there is an overpopulation of a certain species, a series of effects will occur (such as the scarcity of resources, the lack of living space, etc.) that will tend to gradually decrease the population to return to an ideal number of individuals. In this aspect, differential reproduction will be applied, being able to reproduce those that have comparative advantages over the rest, which will inevitably become extinct.
Think about the podcast that you listened to in the Lesson 2.01 Introduction. Write a one-paragraph (using complete sentences) description of the experiment that was performed on these two women. Be sure to include the following: Why was the experiment conducted? What was done to the two women in order to conduct the experiment? What conclusions could be made from this experiment? Why do you think that experiments like this are no longer performed?
Explanation:
The experiment was conducted with the purpose of understanding what makes us "who we really are"; our environment or genetics?
The two women, Paula Bernstein and Elyse Schein identical twins were separated from each other at birth and only got to be reunited when they turned age 35.
"It's undeniable that genetics play a huge role," says Paula. This makes us concludes that genetics still play a role in determining who really are.
Such experiments are no longer performed today because there are legal restrictions put in place against such actions, including the ethical issues it created.
Any permanent change in a gene is called a
what does the number of protons in an atom determine about the atom?
What allows cytokinesis to occur?
Synthesis of new phospholipids
Proteins similar to those in muscles
Chromosomes unpacking
Polymerase elongating the new DNA strand
Answer:
Cytokinesis is initiated in prophase when a cytoskeleton of actin filaments and microtubules forms around the cell. This band is known as the preprophase band, and will later determine the positioning of the cell plate.
The process of combining the parts of a lipid together is called:
Answer: esterification
Explanation:
i looked it up in my textbook
I’ll mark brainliest if right
is Professional athletic ability inherited or acquired?
O Inherited
O Acquired
2. is color blindness inherited or acquired
A. inherited
B. Acquired
Answer:
1. Professional athletic ability is acquired
2. A
Explanation:
1. You would need to work to get to be athletic and that is not inherited
2. There is a certified gene that causes colorblindness in humans
Question 26 (5 points)
Which resources are abundant in the Andean and midlatitude countries?
Choose all answers that are correct.
copper
natural gas
diamonds
petroleum
Answer:
Copper,natural gas, petroleum
Explanation:
Copper and petroleum are found in South America. Most of the mines in the world are found in South America and they generates income to the Aldeans countries.
Also, petroleum reserves are found South America and they are very important, but not as as much as mineral reserves. Venezuela is the country that has the largest oil reserves, other countries like Peru or Ecuador have important reserves. natural gas is very common and present in the region, and it is also an important resource.
A rna codon is uca what would be the amino acid created from this rna
Answer:
Methionine!
Explanation:
It's a stop codon
Why is Glycolysis also known as Alcoholic or lactic acid Fermentation?
Answer:
In lactic acid fermentation, pyruvate from glycolysis changes to lactic acid. This type of fermentation is carried out by the bacteria in yogurt, and by your own muscle cells. In alcoholic fermentation, pyruvate changes to alcohol and carbon dioxide. This type of fermentation is carried out by yeasts and some bacteria.
What would happen to an organism's total number of chromosomes every generation if mitosis produced gametes?
Answer:
if mitosis produce gametes then after fertilization the chromosome number will double than parent and so on. in each generation chromosome sets which are 2n normally ensuring new generation should exactly similar to parent generation. but the case will change when gametes are not haploid. these will be 4n, in next generation it will be 8n, and in next it will be 16n and so on.
Explanation: