When viewing nodule cells through a microscope,cells that are infected with bacteria will be larger and may be pink; both options A and C.
What are signs of infections?The signs of infection by a disease-causing organisms in another organism include inflammation, and a change in the coloration of that organism.
An infection of root nodules will be indicated by swelling and change in coloration.
Therefore, when viewing nodule cells through a microscope, cells that are infected with bacteria will be larger and may be pink.
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The cells that produce testosterone in the testis are called ________.
Answer:
Leydig cells produce testosterone
how did life begin?
are we alone in the universe?
Answer:
Read the Quran. it tells you how did it begin
An introvert prefers to:
read or reflect
go to parties
call friends
buy marbles
Answer:
Read or reflect, since an introvert is an antisocial person. Buying marbles at a store means you have to go around people, which is more social than reading. Reading can be a completely antisocial experience, making this correct.
the negative feedback of menstrual cycle?
Explanation:
The menstrual cycle begins as FSH stimulates development of an ovarian follicle. As this follicle matures, it begins producing a small but steadily rising amount of estradiol. This low level of estradiol causes: Negative feedback: inhibition of FSH and LH secretion.
How would you revise the simulation so users can evaluate the role of human activity in the pH of the ocean? I would add the condition What variables would you add to or change in the simulation to accomplish this?
Human activities such as burning of fossil fuels is the main cause of acidic pH of the ocean.
Explain the role of human activity in the pH of the ocean?The pH of the ocean tends to increase because of human activities that increased levels of carbon dioxide in the atmosphere. This CO2 is dissolved into the ocean and makes the ocean more acidic.
Variable of climate (x) and biodiversity (y) would be added to evaluate the role of human activity in the pH of the ocean.
So we can conclude that human activities such as burning of fossil fuels is the main cause of acidic pH of the ocean.
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Investigate substances containing carbon or oxygen that relate to biological processes. Explain their main function in those processes.
Answer:
I hope this helps!!!1
Explanation:
Carbon and oxygen are independent of each other but are very closely connected as well as interdependent. The following article will cover information that will help you understand the carbon-oxygen cycle in detail.
Life on planet Earth continues due to the presence of organic as well as inorganic nutrients present in nature. These nutrients need to be continuously recycled. If this doesn’t happen, all the nutritive resources in the world will get extinguished completely. No nutrients means no life on Earmeano, for the life cycle of every living being, unicellular or multicellular organism to sustain, recycling the nutrients is very important. One of the important cycles is the carbon-oxygen cycle.
The Process of Carbon-Oxygen Cycle
There are four steps involved in the completion of this cycle. These methods are discussed below:
Photosynthesis
Plants undergo photosynthesis which helps them produce energy and food for themselves. During this process, plants take in carbon dioxide (CO2) and absorb water (H2O) with the help of their roots. The chlorophyll present in the leaves and the energy from the sun, help convert CO2 and H2O into Oxygen O2, sugar, and water vapor. Oxygen (O2) is released by plants as a by-product of the atmosphere.
Formula for Photosynthesis
CO2 + H2O + Light ———-> (CH2O) + O2
The carbon dioxide from air and water from the soil in presence of light (energy) is taken by the plants and converted into carbohydrates and oxygen as by-products.
Respiration
Just as plants carry out photosynthesis, animals carry out respiration. Respiration occurs when animals take in oxygen from the air along with simple sugars from their food. This helps in the release of carbon dioxide, water, and energy from the animal body. During cellular respiration, animals require O2 while inhalation. When they exhale the waste product of cellular respiration, they release CO2 into the atmosphere again.
Formula for Respiration
(CH2O) + O2 ———-> CO2 + H2O + Energy
The carbohydrates taken from food like plants or carbon-based compounds along with oxygen are converted to carbon dioxide which is released into the air along with water and energy during respiration.
Combustion
It is a process of burning that occurs naturally in nature. For example, volcanic eruptions are natural combustion processes where carbon dioxide is released into the atmosphere due to burning. Nowadays, many environmental pollutants cause an increase in the amount of CO2 in the air. These include cars, factories, burning of woods, coal, nuclear energy, gas, etc. This irresponsible combustion and release of excessive carbon dioxide and other harmful gases in the environment is the major contributing factor to today’s global warming.
Decomposition
After the death of any living organism, i.e., unicellular or multicellular organism, it gets decomposed. This decomposition means insects, fungi, and bacteria (together called decomposers), help in breaking down the cellular components of the dead organism into its basic elements. These elements include water, calcium, nitrogen, carbon, and oxygen. Thus, decomposers help in the release of oxygen and carbon dioxide back into the atmosphere as their metabolic waste products.
The entire cycle can be summarized as, plants taking in carbon dioxide and releasing oxygen during photosynthesis. This oxygen released is taken up by animals who release carbon dioxide after carrying out respiration. Thus, the recycling of carbon and oxygen in the atmosphere will continue as long as respiration and photosynthesis occur. This also proves that to sustain life, plants are very important as they are the major contributors to the amount of oxygen present in the atmosphere. Although both cycles occur independently, they are, in a small way, interconnected to each other.
The different processes where carbon and oxygen will combine and help in different biological process are combustion, photosynthesis and respiration.
What is biological process?
A biological process is the organism's genetically designed means of achieving a particular goal. The outcome or final state of biological processes is frequently used to characterize them, for example, the biological process of cell division produces two daughter cells (a divided cell) from a single parent cell.
A biological process is carried out by a specific collection of molecular operations performed by certain gene products (or macromolecular complexes), frequently in a highly controlled manner and in a specified temporal sequence. Oxygen and carbon used in many biological process such as photosynthesis.
Therefore, The different processes where carbon and oxygen will combine and help in different biological process are combustion, photosynthesis and respiration.
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Women make up 46% of this class qualitative or quantitative?
Answer:
Examples of qualitative characteristics are gender, race, genotype and vital status. Qualitative variables are also called categorical variables. Unfortunately, it gets a little more complicated. You might think of a quantitative variable as one that can only be recorded using a number.
an organism has a hapoloid number of 20. what is the organisms diploid number
Give an example of an excretory product and explain why it needs to be removed.
Answer:
example- urine
it is need to get rid out of body because it contains toxic substances like urea which is harmful for human body...
what is a mineral in the earth?
Answer:
The solid substances that occur naturally is called mineral in the earth
If phosphorous has 5 valence electrons, how many does sulfur have?
1. Suppose that a sample of beef broth initially contains
16 bacterial cells. After 4.0 h, there are 1.6 × 106
bacterial cells in the sample. Assuming that the
bacteria reproduce at a constant rate, calculate the
growth rate of the bacterial population for the given
time interval.
From the calculations, the rate of growth of the culture is 2.88.
What is exponential growth problem?We apply the exponential growth problem when there is an exponential increase.
Thus, we have; P =Poe^rt
P = amount at time t
Po = amount originally present
t = time taken
r = rate of growth
1.6 × 10^6 = 16e^4r
1.6 × 10^6/16 = e^4r
1.0 * 10^5 = e^4r
ln 1.0 * 10^5 = ln e^4r
11.5 = 4r
r = 11.5/4
r = 2.88
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Blisters on the genitals can occur during birth in babies affected by which of the following:
A.) Gonorrhoea
B.) Sypillis
C.) HPV
D.) Herpes
PLEASE CHOOSE THE CORRECT ANSWER. TY
Which dance resulted from the development of a culture technique for muscle cells
Rhythm Salsa resulted from the development of a muscle cell culture technique.
How to do cell culture?To obtain a cell culture, it is necessary to disaggregate the original tissue, which can be by mechanical force or enzymatic process. These cells are grown in an adherent layer in a single layer (monolayer) or in organoid format (3D culture) or in suspension.
With this information we can conclude that rhythm Salsa resulted from the development of a muscle cell culture technique.
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Based on the concept of the global conveyor belt, what happens to ocean water as it moves from Antarctica to the equator?
It transfers thermal energy to deeper layers of the ocean.
It becomes less dense and rises to the surface.
It transfers thermal energy to the area, warming the equatorial waters.
It becomes more dense and sinks to the ocean bottom.
What happens to the ocean water as it moves from Antarctica to the equator is : ( B ) It becomes less dense and rises to the surface.
Concept conveyor beltThe conveyor belt is a system of oceans which transports water and propel deep current of water bodies across the globe based on the differences in water densities.
As the ocean water moves from the Antarctica to the equator the cold ocean water mixes with the warm ocean water at the equator, which makes the water less dense and rises to the surface.
Hence we can conclude that What happens to the ocean water as it moves from Antarctica to the equator is It becomes less dense and rises to the surface.
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Which is associated with early increased intracranial pressure?.
Answer:
bleeding in the brain, a tumor, stroke, aneurysm, high blood pressure, brain infection.
Explanation:
In an experiment, a scientist decides to study the effect of exercise on cholesterol levels in people. He studies two set of people—those who exercise every day for an hour and those who don’t exercise at all. In this case, the statement that people who exercise for an hour may have lower cholesterol levels is
. To test this statement, the scientist would measure cholesterol levels in exercisers and non-exercisers. The cholesterol levels would be
The exercise reduces the levels of the low-density lipoproteins or the bad cholesterol. It is found that, the people, who exercise daily have a low level of low-density lipoproteins, and an increased level of high-density lipoprotein, which is also known as good cholesterol.
What is Scientific hypotheses?Scientific hypotheses, in general, are the premises within a given theory, which can be validated on the basis of a scientific method, contributing to the formulation of new hypotheses. In this experiment the theory says that cholesterol levels between people who exercise and people who do not exercise is different. Within this theory, the statement says that people who exercise for an hour may have lower cholesterol levels, is a hypothesis that will be confirmed or refuted after the experiment.
The dependent variable is summarized in the phenomena or factors explained or identified, because they are influenced or determined by the independent variable. In this experiment the independent variable is the performance (or not) of exercises. Exercise is what influences or determines cholesterol levels in this study. Thus, cholesterol levels are a dependent variable.
Hence, to check whether a person exercises regularly or not, the scientist can determine the cholesterol level.
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Which type of primary brain tumor usually arises in the walls of the fourth ventricle in children and in the lateral ventricles in adults
Answer:
Primitive neuroectodermal tumor (PNET)
Explanation:
They usually occur in early childhood but may become symptomatic in adult life. In children, they commonly occur in or near a spinal fluid sac known as the fourth ventricle and are called medulloblastomas.
Which is an unseen factor that affects the carrying capacity of the ocean?(1 point)
Sunlight is an unseen factor that affects the carrying capacity of the ocean.
What is Carrying capacity?Carrying capacity may be defined as the maximum number of individuals that can be supported by a habitat.
The other options under this question are water chemistry, water availability, space, and sunlight.
Water availability and space both are unlimited in the ocean habitat, while the water chemistry remains the same throughout the ocean.
Therefore, sunlight is an unseen factor that affects the carrying capacity of the ocean.
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Why is this discovery important to evolutionary biologists?
The discovery is not specified here but evolutionary biologists are professionals who work to discover descendence relationships between organisms.
Who are evolutionary biologists?Evolutionary biologists are biology professionals who work to find evolutionary (ancestor-descendant) relationships between organisms.
The work of evolutionary biologists is fundamental for understanding the associations in a given taxonomic group.
In conclusion, the discovery is not specified here but evolutionary biologists are professionals who work to discover descendence relationships between organisms.
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Explanation:
The discovery might aid research into how contemporary species, like penguins, have evolved.
_____ productivity = the organic materials that remain after photosynthesis organisms in the ecosystem have used some of these compounds for their cellular energy needs (cellular respiration)
The organic materials that remain after photosynthesis organisms in the ecosystem have used some of these compounds for their cellular energy needs called primary productivity.
What is cellular respiration?
Cellular respiration is defined as the process through which organisms combine oxygen with food molecules, converting the chemical energy in these substances into life-sustaining activities and discarding, as waste products, water and carbon dioxide.
Common examples of primary producers include diatoms, coccolithophores and dinoflagellates.
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What is the name of the process that plants use to remove carbon dioxide from the atmosphere?
Answer:
photosynthesis
Explanation:
Explanation:
the Name of the process that plants use to remove carbon dioxide from atomsphere is photosynthesis
Drag each item to the correct location to indicate whether it describes the American or European weather model. (2 points)
Answer:
America model weather can predict 16 days,
Explanation:
the study of the space around
Earth and within the universe,
including meteoroids and
galaxies that are trillions of
miles away
Astronomy is the the study of the space around Earth and within the universe, including meteoroids and galaxies that are trillions of miles away.
What is Astronomy?Astronomy is the study of everything in the universe beyond Earth's atmosphere.
It is the the study of the space around Earth and within the universe, including meteoroids and galaxies that are trillions of miles away.
In summary, it includes objects we can see with eyes, like the Sun , the Moon , the planets, and the stars .
It also includes objects we can only see with telescopes or other instruments, like faraway galaxies and tiny particles.
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15. Which phase of biotechnology product development often involves testing in live animals?
A. Phase 2 and Phase 3 trials
B. Phase 1 and Phase 2 trials
C. Phase 4 trials
D. Preclinical trials
Preclinical studies involves the testing of live animals. The correct option is D.
What is biotechnology?The use of biology to solve problems and the to create valuable goods is referred to as biotechnology. The most common method is genetic engineering, which allows scientists to manipulate an organism's DNA.
Clinical research, a part of biotechnology includes the following phases:
Preclinical studies.Phase 0.Phase I.Phase II.Phase III.Phase IV.Testing live animals is a part of a preclinical trial that can involve certain vaccination, drug, medication, etc.
Thus, the correct option is D.
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Which statement is true about organ systems in the human body?
Choose 1 answer:
(A) each organ system works completely alone.
(B) if one organ system fails, another will take its place.
(C) organ systems carry out unique functions that help the body live and grow.
Answer:
C
Explanation:
organ systems are group of organs working together to carry out a specific function. organ systems carry out unique functions that helps the body to live and grow.
Answer:
C
Explanation:
Each organ system has unique or specific functions and no other organ can take it's place
The nervous system is responsible for all of the following except which of these?
1.producing red and white blood cells
2. sensing external stimuli
3. connecting sensory and motor neuron signals
4.controlling automatic body processes, such as breathing
Answer:
1.producing red and white blood cells
This is done by bone marrow and other organs.
Answer:
1. Producing red and white blood cells
Explanation:
Blood cells are not part of the nervous system and are not produced by the nervous system.
The sides of the DNA ladder are made up of a phosphate and:
a sugar called deoxyribose
a plasma called hemoglobin
a chemical called neuclaic acid
an acid called chlorophyll
Answer:
A sugar called deoxyribose.
Explanation:
DNA is made up of molecules called "nucleotides". These are:
A phosphate groupA pentose sugar [deoxyribose]A nitrogen-containing base [adenine, thymine, guanine and cytosine]Thus the first option is the right answer.
Reasons why the other options are wrong:
"A plasma called haemoglobin" is wrong as plasma and haemoglobin are related to the blood.
"A chemical called nucleic acid" is wrong as it is not what DNA's made up of. DNA and RNA are nucleic acids themselves.
"An acid called chlorophyll" is wrong as chlorophyll is related to plants.
If you were building a swimming pool in your yard, what two metric units would be BEST suited for the measurements?
centimeters and kiloliters
meters and kiloliters
kilometers and milliliters
decimeters and deciliters
Answer: Meters and Kiloliters
Answer: meters and kiloliters
Explanation:
Select the correct answer from each drop-down menu.
which domains of sustainability are referenced here?
domain
the
domain incorporates cultural norms that directly impact sustainable development. the
focuses on the protection and preservation of natural and artificial resources.
The domain incorporates cultural norms that directly impact sustainable development. hence, option B is correct.
What do you mean by economic domain?The economic sphere is a social one that includes connected human behaviors and exchanges and does not exist in a vacuum. Individuals, companies, organizations, and governments can all act as economic agents.
Cultural norms are incorporated into the economic sector and have a direct effect on sustainable development. The conservation and preservation of both natural and man-made resources are the major objectives of the environmental domain.
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