Answer:
B
Explanation:
Bacterial transformation is a process where the plasmid a circular piece of dna is introduced to the bacterium. It is vital for bacterial transformation and selection for vaccine production purposes, protein production, and even insulin production.
Describe the cell structure of fungus in detail with a neat labeled diagram.
Answer:
Fungal cells differ from mammalian cells in that they have cell walls that are composed of chitin, glucans, mannans, and glycoproteins. Both mammalian and fungal cells have cell membranes; however, they differ in their lipid composition.
Explanation: Like plants and animals, fungi are eukaryotic multicellular organisms. Unlike these other groups, however, fungi are composed of filaments called hyphae; their cells are long and thread-like and connected end-to-end, as you can see in the picture below.
Describe the roles of the soil organisms in the carbon cycle
Carbon cycle is a biogeochemical cycle by which carbon is exchanged among the different components of the Earth.
Carbon cycle along with the Nitrogen cycle and the Water cycle, comprises a sequence of events that are key to make Earth capable of sustaining life.
It describes the movement of carbon as it is recycled and reused throughout the biosphere, as well as long-term processes of carbon sequestration to and release from carbon sinks.
The terrestrial carbon cycle is dominated by the balance between photosynthesis and respiration.
Carbon is transferred from the atmosphere to soil via ‘carbon-fixing’ autotrophic organisms, mainly photosynthesizing plants and also photo- and chemoautotrophic microbes that synthesize atmospheric carbon dioxide (CO2) into organic material.
Fixed carbon is then returned to the atmosphere by a variety of different pathways that account for the respiration of both autotrophic and heterotrophic organisms.
The reverse route includes decomposition of organic material by ‘organic carbon-consuming’ heterotrophic microorganisms that utilize the carbon of either plant, animal or microbial origin as a substrate for metabolism, retaining some carbon in their biomass and releasing the rest as metabolites or as CO2 back to the atmosphere.
What is the role of soil organisms in the Carbon Cycle?Soil Organisms or Microbes are critical in the process of breaking down and transforming dead organic material into forms that can be reused by other organisms and thus the microbial enzyme systems involved are viewed as key ‘engines’ that drive the Earth's biogeochemical cycles.
Soil microbes essentially transfer carbon between environmental compartments to fulfil their fundamental goal: survival through reproduction.
Thus, microbes utilize different organic and inorganic forms of carbon as carbon and energy sources.
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Suppose a rural community lives at the top of a mountain. They hold a community meeting to discuss the following options to use as their main energy source; Hydro-power, wind energy, or biofuel. List their options from the ideal to the least ideal. Explain your answer.
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What is a silent mutation?
Answer:
Mutations in DNA that do not have an observable effect on the organism's phenotype.
Method:
Search Engine
biomolecules broken down into MONOMERS
(list 4)
what will happen if all snakes are killed
If all snakes are killed the prey population will grow and overlap effects would ripple through the ecosystem and cause considerable damage. the prey population that snakes feed on would grow, and the predators that feed on snake will die out.
Examine the model for natural selection for rodents and their predator species, the owls. Which statement accurately
describes the relationship between genetic variation and natural selection? Select ALL that apply.
A)
B)
Genetic variation decreases in a population of prey after natural selection
acts on it
Genetic variation increases in a population of prey after natural selection
acts on it
Genetic variation decreases in a population of predators after natural
selection acts on it
Genetic variation increases in a population of predators after natural
selection acts on it
Genetic variation exists in a population leading to individuals with
adaptations with different survival frequencies.
D)
E)
Indiana is home to fossilized
The correct answers are:
-Genetic variation decreases in a population of prey after natural selection acts on it.
-Genetic variation exists in a population leading to individuals with adaptations with different survival frequencies.
Genetic variation creates new variants of a gene; such a variant is called an allele. These variations occur as a result of the interaction between individuals with their environment, where it affects them in a way that determines their survival or not, as a consequence of their adaptability to the surrounding context. Thus, natural selection occurs, which establishes which individuals survive and which individuals do not. Thus, individuals characterized as prey who develop defense elements against hunters will be the ones who survive, while those who do not will be the ones who will perish.
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Overview of photosynthesis, using the detailed inner structure of a leaf.
Answer:
Photosynthesis is the process in which light energy is converted to chemical energy in the form of sugars. In a process driven by light energy, glucose molecules (or other sugars) are constructed from water and carbon dioxide, and oxygen is released as a byproduct.
Explanation:
Proteins can be denatured in many ways.
Which of the following will NOT denature
a protein?
A. pH
B. temperature
C. too many enzymes
D. salt content
Answer:
Explanation:
However, at very high salt concentration, the increased surface tension of water generates a competition between protein and salt ions for hydration. Salts strip off the essential layer of water molecules from the protein surface eventually denaturing the protein
Too many enzymes cannot denature protein.
Enzymes are a type of protein so they will not get denatured in presence of one another.Enzymes are proteins that speed up any biochemical reaction in the body.What is denaturation of protein?It is a process of modifying the molecular structure of a protein.It involve breakage of many of the weak bonds within the protein molecule that are responsible for the structure of protein and its order.It can happen due to high temperature, pH, salt concentration and mechanical concentration.To know more about denaturation of protein here
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What is the meaning of a null hypothesis being rejected?
Answer:
If there is less than a 5% chance of a result as extreme as the sample result if the null hypothesis were true, then the null hypothesis is rejected. When this happens, the result is said to be statistically significant .
describe how the solar system was formed
Explanation:
The Sun and the planets formed together, 4.6 billion years ago, from a cloud of gas and dust called the solar nebula. A shock wave from a nearby supernova explosion probably initiated the collapse of the solar nebula. The Sun formed in the center, and the planets formed in a thin disk orbiting around it. In a similar manner, moons formed orbiting the gas giant planets.
7. Observations and inferences are
important in science. How would you
explain the difference between the
two words?
Hey there! I'm happy to help!
Observations are things that can be written down or described. You can observe something with any of your five senses: you can see what color something turns, you can hear the noise something makes, you can taste a cookie with a different amount of an ingredient, you can smell an odor produced by a chemical reaction, and you can feel the texture of different samples.
You can also create observations by using scientific tools. For example, instead of feeling if water is hot or cold, you could use a thermometer. This will give you numerical data which can be put into a table or graphed for further analyzing.
Inferences are created from observation. You cannot make an inference without observation. Observations lead to inferences. Inferences are conclusions or guesses made from the observations. You could infer that sugar makes a cookie taste sweeter after experimenting with no sugar and observing that it tasted bitter. You could infer that more weight allows things to travel further after going down a ramp after measuring the distances different weights travel, graphing it, and observing the data.
Have a wonderful day and keep on learning! :D
¿Qué ocurre cuando inspiramos?
Answer:
Cuando respiramos, el diafragma se mueve hacia abajo, en dirección al abdomen, y los músculos de las costillas empujan a las costillas hacia arriba y hacia afuera. Esto hace que la cavidad torácica se agrande y tome aire a través de la nariz y la boca para enviarlo a los pulmones.
do you think your heart plays the biggest role in the process of getting your blood become rich in oxygen and transporting materials gases and other molecules to and from the different parts of the body?
WHY DO YOU THINK SO?
Yes. Absolutely. Without heart, no one can live. It helps in pumping of oxygen rich blood to all body cells and tissues. It also helps in transportation of various materials like potassium, sodium, calcium etc. in our body. The main function is that it helps in excretion of wastes.
Since blood is liquid and heart pumps it, the waste materials like CO2, gets diffused and becomes impure blood. Then it is taken to lungs for purification and again reused.
So, heart actually helps us indirectly in many ways.
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Which descriptions apply to these two compounds?
Answer:
atoms and molecules
Explanation:
Describe the effect of increased carbon dioxide concentration on blood pH
Answer:
As it combines with water, it forms carbonic acid, making the blood acidic. So CO2 in the bloodstream lowers the blood pH. When CO2 levels become excessive, a condition known as acidosis occurs. This is defined as the pH of the blood becoming less than 7.35
The increase in the carbon dioxide concentration on blood pH leads to the condition known as Acidosis.
What is the normal blood pH?The level of normal blood pH in humans significantly ranges from 7.35 to 7.45 on a pH scale. It is considered neutral but experimentally it is slightly basic in nature.
As the concentration of carbon dioxide in the blood increases, the carbon dioxide in the presence of water forms carbonic acid which lowers the blood pH from 7.35.
This reduction in blood pH is known as acidosis. This is caused by the overproduction of acid within the body due to excessive concentration of carbon dioxide in the blood's pH. Acidosis leads to feeling fatigued, lethargic, muscle aches, etc.
Therefore, the concentration of carbon dioxide on blood pH negatively harms the health of an individual.
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What are reactants in a chemical reaction?(1 point)
substances that are formed by reactions
outputs
inputs
substances that speed up reactions
Answer
D
Explanation:
inputs are the substances put in to make a chemical reaction.
The reactants are the inputs that are combined to form a product. The correct option is C.
What is a chemical reaction?A chemical reaction is a process that converts one or more substances, known as reactants, to one or more different substances, known as products. Chemical elements or compounds are examples of substances.
The most important types of events in the universe are chemical reactions. Plants grow, produce fruit, and decompose to become compost for new plants through chemical reactions.
Humans (and all other animals) reproduce, digest, grow, heal, and think as a result of chemical reactions.
Nuclear reactions are processes that involve the atomic nucleus. Reactants are the input substances that take part in a chemical reaction.
Products are the substances that are formed. The properties of the products differ from those of the reactants.
Thus, the correct option is C.
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In a pyramid of numbers, what will be the largest trophic level?
A. Primary Consumers
B. Secondary Consumers
C. Decomposers
D. Producers
4. Ciertos individuos en su escuela son líderes. ¿Qué hace que la gente siga a los demás? Una encuesta realizada indicó que
el rasgo que más valoraban los estudiantes en un amigo era la honestidad. ¿Por qué cree que esto es cierto?
Answer:
Mucha gente sigue a los demas porque piensan que lo que muchos siguen la mas alta alta probalidad tiene de estar correctos y tambien creen que ellos son bien popular.
Explanation:
Based on the structures, a student claims that the animal cell contains complex structures that are absent in the bacterial cell. Which statement can the student make to support the claim?
(a) Animal cell contains flagella that aids in locomotion that is absent in case of a bacterial cell.
(b) Nuclear material of the bacterial cell is not enclosed in a nuclear envelope as in case of an animal cell. *
(c) Cytoplasmic content of the bacterial cell is not enclosed in a thick cell wall as in case of an animal cell.
(d) Animal cell contains ribosomes spread across the cell whereas in case of bacterial cell they are clumped together.
The answer is b. since bacteria are prokaryotes.
where does glycolysis take place in a cell?
Help me with this question plzz!
Labeo = gills
Dolphin= pisces
Tadpole = hibernation
snake= internal fertilization
Eagle = aerial mode of life
Human = mammals
Jorge is studying a pond ecosystem in his neighborhood. The pond is home to a variety of plant and animal species, as well as a stop for birds that migrate through the region.
One summer, heavy rains wash an unusual amount of fertilizer into the pond. Jorge observes the algae population growing rapidly, and quickly algae cover the pond's surface. Several weeks later, many fish and other animals die in the pond. However, within two years, the algae population has returned to its previous size, as have the populations of all the ecosystem members.
Jorge's observations provide the strongest evidence for which of the following conclusions about the pond?
A. The pond ecosystem has very high biodiversity that protects it from invasive species.
B. The pond ecosystem is resilient to changes in many abiotic and biotic factors.
C. The pond ecosystem can withstand only certain levels of algal growth.
D. The pond ecosystem may change over time, but its species will continue living there indefinitely.
Answer:
I think that the answer is C.
Explanation:
If the levels of algae were too high then it would be the reason as to why the fish died. When the algae went back to normal,the fish were able to live there again.
I hope that helps!
Answer:
C.The pond ecosystem can withstand only certain levels of algal growth.
Explanation:
How many body sections do insects have?
a.
one
b.
two
c.
three
d.
four
Explanation:
Option C answer is 3 three
Answer:
insects have three body sections
In the following pedigree showing the transmission of Cystic Fibrosis, an
autosomal recessive condition, what must the genotype of the indicated woman
be?
A: FF
B: Ff
C: ff
D: cannot determine
*red circle is affected female*
*blue circle is normal female*
*red square is affected male*
*blue square is normal male*
In the pedigree showing the transmission of Cystic Fibrosis, the genotype of the marked woman will be FF or Ff. Thus, options A and B are correct.
What is a pedigree?Pedigree represents the heritable phenotypic trait in the form of charts and diagrams. Cystic Fibrosis disease is inherited by the autosomal recessive alleles and is possible only if the genotype is ff.
The genotype for the woman being normal should not have recessive alleles and only can be heterozygous or purebred dominant. It is possible only if the genotype is Ff and ff.
Therefore, the genotype of the indicated woman will be Ff and ff.
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state 3 main parts of eukaryotic cell
Answer:
The three main parts of a eukaryotic cell are the cell membrane, the cytoplasm and the nucleus.
Answer:
Cell Membrane, Cytoplasm, and The Nucleus.
Explanation:
Which term defines a well tested,scientifically supported statement that describes how something happens
Answer:
The term would be: Theory
Explanation:
A theory is a supposition or a system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained. It is a well-substantiated explanation of an aspect of the natural world that can incorporate laws, hypotheses and facts.
Answer:
theory
Explanation:
1. What happens when matter changes state?
a. Its chemical properties change.
b. Its physical properties change.
c. The energy of its particles remains the same. hape
d. two of the above
Answer:
Matter either loses or absorbs energy when it changes from one state to another. For example, when matter changes from a liquid to a solid, it loses energy. The opposite happens when matter changes from a solid to a liquid. For a solid to change to a liquid, matter must absorb energy from its surroundings.
Answer:
d.
Explanation:
Its chemical and physical properties changes as a result of a change in temperature (increase or decrease in temperature).
1. As a group, you and three other students must make a presentation on an animal. Which option is the best example of your group coming to a consensus on the presentation topic?(1 point)
A. A group member is selected as the team leader and the team leader chooses the presentation topic.
B. Each member gets a vote and the animal with the most votes will be the presentation topic.
C. The group writes options on slips of paper, puts them in a hat, and the paper that is selected will be the presentation topic.
D. The group cannot agree on what animal to choose so your teacher chooses your presentation topic.
2. Why might a paleontologist who works with fossils and an archaeologist who specializes if recovering human artifacts work together to determine where a fossil belongs in the hominid family tree?(1 point)
A. They both know how to remove objects carefully from the ground.
B. They both have different skills to help answer the question about ancient humans.
C. They both understand the relationship between fossils and early humans.
D. They both are experts on different types of bones.
3. Suppose a team of scientists has uncovered the site of an ancient city along a river. Which question could an anthropologist and archaeologist work together to help answer?(1 point)
A. Which plants did humans grow at this site and how were they grown?
B. How have humans impacted the rock layer of the city changed over time?
C. What tools were found at the site and which civilization used them?
D. How did changes in the depth of the river affect the houses people built at the site?
4. Insects are important to many ecosystems. For example, bees help pollinate many different plants and many animals rely on insects as food sources. Citizen science projects allow the public to work together with scientists by collecting observational data on many types of organisms such as plants, birds, or insects.
Which question could citizen science data answer that best illustrates insect population responses to climate change?
(1 point)
A. “What tree species provide the best habitat beetle species in this area?”
B. “What types of foods can butterflies eat?”
C. “How many dragonfly species are native to this region?”
D. “How does caterpillar abundance and distribution change over the year?”
5. Coral bleaching occurs when coral become stressed and expel the algae that they contain. According to scientists, what steps can society take to fix coral bleaching?(1 point)
A. Scientists have concluded that society can only fix coral bleaching by stopping climate change entirely.
B. Scientists have concluded that society can fix coral bleaching by reducing stressors, such as sedimentation and pollution, and limiting climate change.
C. Scientists have concluded that society can fix coral bleaching by reducing stressors, such as sedimentation and pollution.
D. Scientists have concluded that society can only fix coral bleaching by controlling ocean temperatures by reducing greenhouse gas emissions.
Answer:
1). b
2) d
3). d
4). d
5) b
I hope it's helps you
una celula tiene mucho color verdoso, posee una forma poliédrica y presenta una pared rígida, ¿Que tipo de celula es?
Explanation:
PLEASE express yourself in English
