Recombinant DNA is possible because all organisms use the same codes for amino acids. Option C is the correct one.
The genetic codesOne of the fundamental characteristics of the genetic codes is that they are similar in all living organisms.
Each genetic code is translated into an amino acid. Thus, living organisms use the same codes for their amino acids in the proteins.
This makes inserting the genes of one organism into the genome of another (recombinant DNA) very easy.
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b) How many species has the genus Homo had in the course of history and when did this
genus first arise? (2 points)
Answer: The genus Homo had three species, H. habilis, H. rudolfensis, and H. erectus, and the genus first arose about 2.5 million years ago
Explanation:
question is in picture
Answer:
the 1st choice
Explanation:
as u can see it's going up and in most cases that means increasing
The technology in this picture produces which energy conversion?
Answer:
D
The reason that its d is because if theres a water generator in the dam then it requires the water to move the generator which converts it to electricity
A?
B?
C?
D?
E?
Who helps me plz?
Answer:
A [ not sure !]
Explanation:
The soil that provides nutrients for vegetation in ecosystems is also affected by deforestation. ... Some of the carbon dioxide released into the atmosphere comes from dead vegetation that decomposes in the ground. In heavily deforested areas, soil erosion and nutrient runoff are common after a rainfall.
Type the correct answer in the box. Spell all words correctly.
Which age pyramid has the largest base of pre-reproductive population?
pyramid has the largest base of pre-reproductive population.
Reset
Reset
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Answer: By looking at all the age population pyramids, this would be my best guess. Every territory is different with various populations, however, to the best of my knowledge, it would be the expansive pyramid.
Explanation: Expansive population pyramids are used to describe populations that are young and growing. They are often characterized by their typical ‘pyramid’ shape, which has a broad base and narrow top. Expansive population pyramids show a larger percentage of the population in the younger age cohorts, usually with each age cohort smaller in size than the one below it. These types of populations are typically representative of developing nations, whose populations often have high fertility rates and lower than average life expectancies.
Which characteristics can be used to classify the tree as a gymnosperm rather than “any other type of seed” plant?
1. Naked seeds
2.green leaves
3. Thick bark
4.tall height
Can someone help me !plzz
Answer:
1) Naked seeds
Explanation:
Answer:
1
Explanation:
Which best defines the population growth rate?
A. a. (birth rate + immigration) - (death rate + emigration)
B.(birth rate + fertility rate) - (death rate )
C.birth rate - death rate
Answer:
A a(birth rate+immigration)-(death rate)
A. (birth rate + immigration) - (death rate + emigration) best defines the population growth.
What is population growth?Population expansion is the term used to describe the increase in human population. Most of human history was marked by a rather stable population. However, innovation and industrialization made energy, food, water, and medical care more reliable and accessible.
The human population has grown dramatically over the last century. It has mostly accomplished this by producing copious amounts of food and figuring out how to deal with sickness. There may have been only a million people on the planet when mankind first developed agriculture ten thousand years ago.
Despite the fact that every demographic pyramid is different, most fall into one of three categories: expansive (young and rising), constrictive (elderly and shrinking), or stagnant (little or no population growth).
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Predict how a loss of function mutation in the p53 gene is most likely to affect the cell cycle in response to DNA damage. Justify your predictions.
Answer:
The cell cycle of cell multiplication is regulated by three types of genes, the regulatory genes that control mutations, the generic promoters of cell replication, and genes that inhibit cell replication.
The balance between these three types of gene group are what result in a good multiplication of cells without mutations or neoplastic developments.
The p53 gene is one of the genes that is considered as the guardians of the genome, since it is in charge of corroborating and regulating mutated cells, in this way it inhibits their progression in the cell cycle by putting a stop to not replicate defective genes or genes with alterations.
Explanation:
The p53 gene is one of the most altered genes seen in malignant neoplasms, since by altering our guardian of the genome many mutations overlook and more carcinogenic potential will have neoplastic tissue.
In the three groups of genes that we write, all three have a fundamental roll in the cell cycle, but in order to trigger malignant neoplasms, it is necessary that there be a continuous series of gene mutations in these three groups, it is not enough with the mutation of a single gen.
do women or men have it harder? why?
I think that it’s women
Which external stimulus is responsible for negative geotropism shown by
the stem of a plant?
•sunlight
•gravity
• water
Answer:
Tropism
Sunlight-phototropism
gravity-geotropism
IDK what what water is
Explanation:
Sarah adds 10 g of baking soda to 100 g of vinegar. The mixture begins 20
to bubble. When the bubbling stops, Sarah finds the mass of the resulting
mixture. She determines its mass is 105 g. The data she collected is in the
table. Does this follow the law of conservation of mass? Explain.
Answer:
Yes, the reaction between baking soda and vinegar follows the law of conservation of mass.
Explanation:
The table and data was not attached to the question.
When baking soda and vinegar are mixed together, a chemical reaction occur resulting to release of gas (carbon dioxide gas)
Law of conservation of mass states that the total mass of the reactants in a chemical reaction must be equal to the total mass of the products.
That is mass of reactant = mass of product = 100g + 10g = 110g
Sarah got 105g as product because a gas of mass 5g was released during the reaction.
Sarah found the mass of the resulting
mixture without including the mass of the released gas.
A way to account for the mass of the gas is if the experiment is done in a closed system like zip lock bag to collect and account for the mass of the gas.
When this is done, the law of conservation of mass would be proven.
Some single-celled organisms make copies of themselves through mitosis. Which decribes the function of the cell cycle in such single-celled organisms?
reproduction
repair
growth
protection
Answer:
The answer is A
Explanation:
Answer:a
Explanation: i just took the test
How would permeability change if types of channels in a neuron change?
Answer:
Explanation:
How the resting membrane potential is established in a neuron. ... Ions move down their gradients via channels, leading to a separation of charge that ... through brief, controlled changes in the permeability of their cell membrane to particular ... If you did this, you would measure an electrical potential difference, or voltage, ...
Membrane permeability is affected by temperature, the type of solute present, and the degree of cell hydration. Increasing the temperature makes the membrane more unstable and very fluid. Lowering the temperature slows the speed of the membrane.
Does the permeability change during the action potential?Action potentials, the main electrical signal produced by nerve cells, reflect changes in membrane permeability to specific ions.
The important point is that increasing Na + permeability causes more depolarization, resulting in the opening of more Na + channels and further depolarization of the membrane potential.
Membrane permeability to water and solute has been shown to depend on temperature, the osmotic pressure of the medium, the type of solute present, the degree of cell hydration, and the presence or absence of ice.
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What geographic feature has the largest impact on creating a climate zone
i think the answer should be location
PLZZZZZ HELPPP!!
Select the correct answer.
A force of 15 newtons is applied to both Object A with a mass of 25 kilograms and Object B with a mass of 50 kilograms. What is true about th
acceleration of Object A and Object B?
ОА
Acceleration of Object A is four times that of the acceleration of Object B.
OB.
Acceleration of Object A is the same as the acceleration of Object B.
Ос.
Acceleration of Object A is half the acceleration of Object B.
OD
Acceleration of Object A is twice that of the acceleration of Object B.
Answer:
B
Explanation:
i believe
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Which term describes this reaction?
A skeletal diagram of a branched chain of carbons with 1 carbon bonded to O H; right arrow with H 2 S O 4 above and heat below, skeletal diagram with 2 carbons double bonded and branches above left and right and below left and right.
addition
condensation
elimination
substitution
Answer:
a- addition
Explanation:
Answer:
addition
Explanation: i said so
What hypothesis did Pasteur’s experiment test?
Answer:
Where do the microbes come from to cause broth to decay. Hypothesis: Microbes come from cells of organisms on dust particles in the air; not the air itself.
Animal-like protists, such as Amoeba and Paramecium.
Answer:
Yes Amoeba and Paramecium are considered as animal-like protists
Explanation:
Amoeba and paramecium are considered to be animal-like protists because they are able to move through their habitat, and they gain energy from other sources.
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Sally
Sally thinks that the plants get food from the soil and that plants use their roots to take in the food they need for energy. She is worried that her plant will use up the soil in the Microworld and will run out what it needs for food.
Tanya
Tanya thinks that plants make their own food using air, water, and light. She thinks that as long as her Microworld is in the sun, the plant will have what it needs for food.
Richard
Richard also thinks that plants make their own food using air, water, and light. However, he is worried that there is not enough water or air in the bottle for his plant and that the plant will run out of what it needs to make food before the end of the project.
Which student’s claim do you most agree with? Explain your evidence and reasoning?.
Which student’s claim do you least agree with? Explain your evidence and reasoning.
Answer:
Tanya (agree with most) Sally (agree with least)
Explanation:
Tanya: It's true - plants make their own food using air, water, and light. The process it called photosynthesis, where plants make glucose, their food by using air, water, and light. In a bottle, in a way, your replicating a world: plants get carbon dioxide: vital for plant growth, through the carbon cycle, and water from the water cycle.
Sally: Wrong! Roots ar not used to take in soil, they are for water!
Model: To determine the probability of a trait combination such as black fur and red eyes consider each trait separately. Fill in the Punnett square for each trait. Then determine the probability of black fur and the probability of red eyes. Express each probability as a fraction.
Answer:
3/8
Explanation:
I think I can help with completing the question.
Above each punnet square, the genotypes of the parents were given right? something like this:
Parent 1 fur genotype: Ff Parent 1 eye genotype: Ee
Parent 2 fur genotype: Ff Parent 2 eye genotype: ee
F f E e
F FF Ff e Ee ee
f Ff ff e Ee ee
Probability of black fur if dominant is: Probability of red eyes:
3/4 2/4= 1/2
Probability of a trait combination such as black fur and red eyes is
3/4*1/2 = 3/8.
If your phenotype is free earlobes and free earlobes is dominant what is your genotype
Answer:
ff
Explanation:
hope this help
10. Define immunity, and distinguish between active and passive immunity. this should be 150 words. I will mark as BRIANILIST. thank you.
Answer:
Immunity is the balanced state of multicellular organisms having adequate biological defenses to fight infection, disease, or another unwanted biological invasion, while having adequate tolerance to avoid allergy and autoimmune diseases. Each part of the immune system has a unique function. Also, the immune system is responsible for down-regulating immune responses against external harmless triggers such as food, or against the bodies' tissue. Active immunization is the induction of immunity after exposure to an antigen. Antibodies are created by the recipient and may be stored permanently. Naturally acquired active immunity occurs when the person is exposed to a live pathogen, develops the disease, and becomes immune as a result of the primary immune response. And passive immunity is the transfer of active humoral immunity of ready-made antibodies. Passive immunity can occur naturally when maternal antibodies are transferred to the fetus through the placenta. Passive immunity refers to the transfer of antibodies from one individual to another.
Provide one example of an adaption that a herbivore has to prevent itself from being eaten. Use a specific example.
Answer:
horses have long, strong legs that allow them to run from predators.
Do you think that climate change has been presented to you as doom and gloom throughout your life? Explain.
Answer:
I believe that climate change is one of the most serious problems of young generations. At the current pace of greenhouse gas production global warming will increase exponentially, which will result in rising sea levels, certain animal species going extinct. Deforestation also severely adds to this problem as wood is a finite resource on Earth and the more trees we destroy the less oxygen there is relative to the amount of carbon dioxide in the atmosphere. This will continue to weaken the ozone layer which could result in catastrophe from sun flares or radiation. I do believe that in the near future drastic measures will be taken to prevent these events.
Explanation:
The process of cellular respiration takes place mostly in the _______.
A.
lysosomes
B.
nucleus
C.
mitochondria
D.
endoplasmic reticulum
Answer:
C)mitochondria
Explanation:
The cellular respiration occurs in the mitochondria.The anaerobic process of glycolysis takes place in the cytoplasm of the cell.
Answer:
c. mitochondria
Explanation:
helppp mememeememmedddd
Answer:
50% chance
Explanation:
If one parent is heterozygous (Ss) and the other is homozygous recessive (ss), then half of their offspring will have the trait. In other words, any of the offspring will have a fifty percent chance of having the trait.
Explain negative feedback mechanism
Answer:
The negative feedback mechanism is a reaction that causes a decrease in function inside a human's body and reduces the fluctuations in the output.
Explanation:
Why is electroreception important to sharks?
O keeps predators away
O detects prey
O balance
O attracts mates
What happens if one animal eats poison and another animal eats it? Will it be poisoned too?
Answer:
yes
Explanation:
If one animal eats poison , it means that kne animal is contaminated , if anyone else consume it then that animal also gets poisoned .
Which of the following is required of a new drug?
A. It must bind to a virus.
B. It must be in liquid form.
C. It must be easy to swallow.
D. It must help cure a disease.
Answer:
D. It must help cure a disease
Hope that helps!
Explanation:
It must help cure a disease. For a new drug to be approved by regulatory agencies such as the FDA (Food and Drug Administration), it must undergo rigorous testing to demonstrate its safety and efficacy in treating a specific disease or condition. Hence option D is correct.
What is a drug?A drug is a substance that has a physiological effect when ingested or otherwise introduced into the body. Drugs can be used for a variety of purposes, including treating or preventing disease, managing symptoms, altering mood or consciousness, or enhancing physical or cognitive performance.
The drug must also be shown to have a favorable benefit-to-risk profile, meaning that its potential benefits outweigh any potential risks or side effects. The drug's mechanism of action, or how it works in the body, is also an important consideration in the approval process.
While a drug may bind to a virus, be in liquid form, or be easy to swallow, these characteristics alone do not make a drug effective in treating a disease.
The ultimate goal of drug development is to find treatments that can help cure, prevent, or manage illnesses, so efficacy and safety are the most important factors in determining whether a new drug will be approved for use.
Hence option D is correct.
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