HOMEOSTASIS The cells can survive, if the temperature, pressure and chemical composition of their fluid environment remains constant. The surrounding environment of the body provides oxygen and nutrients required by all cells of the body.anation:
What is free nitrogen? Nitrogen gas is called "free" nitrogen, meaning it is not combined with other kinds of atoms. Most organisms can use nitrogen only once it has been "fixed," or combined with other elements to form nitrogen-containing compounds.
Answer:
About 78% of the Earth's atmosphere is made up of "free" nitrogen (N2), produced by biological and chemical processes within the biosphere and not combined with other elements. ... One family of nitrogen compounds produced by nitrogen - fixing bacteria are called nitrates.
Explanation:
Hope this helps
Free nitrogen refers to nitrogen gas (N₂) that exists in the Earth's atmosphere as a diatomic molecule consisting of two nitrogen atoms bonded together. It is called "free" nitrogen because it is not chemically combined with other elements or atoms.
Nitrogen gas makes up approximately 78% of the Earth's atmosphere, making it the most abundant gas present. Despite its abundance, most organisms cannot directly utilize nitrogen gas in this form. This is because the bond between the two nitrogen atoms is very strong, requiring a significant amount of energy to break.
Therefore, free nitrogen refers to nitrogen gas (N₂) present in the atmosphere that is not chemically combined with other elements. It needs to undergo nitrogen fixation to be converted into usable forms before most organisms can utilize it.
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Which specialist is needed to maintain a patient's
stability in a surgery during which the heart is
stopped?
echocardiogram technician
cardiologist
cardiac perfusionist
cardiology nurse
Answer:
Cardiac perfusionist
Explanation:
just trust me bro
2. "Natural selection is usually thought of as an agent of change in populations, but it can also act to maintain the status quo."
In a short, written response, analyze and evaluate this statement. Include the range of responses of a population to changes in the environment, such as differential reproductive success, the adaptation and development of diversity in and among species, and the change in populations.
Answer:
Those organisms survive and maintain its population who are chosen by natural selection.
Explanation:
This statement means that when the population experiences a new set of environmental conditions, two things are happened i. e. the population either adjusts through natural selection or becomes extinct. The fossil of dinosaur indicates that extinction occur due to changed in the environment. If the population made changes in itself and adapt the environment then the organism survive otherwise extinction occur.
I’d appreciate it very much, if someone would help me with these two questions
Answer:
1. C
2. D
Explanation:
In an experiment, which aims at solving a particular problem or answering a scientific question about nature, the scientific method is employed. The scientific method contains the following steps:
- Making an observation.
- Asking a question.
- Formulating a hypothesis
- Testing the hypothesis via experimentation
- Analyzing the results
- Conclusion
According to question 1, the PURPOSE of an experiment portrays what is about to be done in a question format. For example, a purpose can go this: What will be the effect of pesticides on the growth of cowpea?. Furthermore, the PURPOSE helps make a research and state a hypothesis in the next step.
- In the analysis of result, the qualitative or quantitative approach is used. The QUANTITATIVE method involves the use of numbers or numerical data to express the outcome or result of the experiment. By counting or measuring, a numerical data is collected and given a unit depending on what is being measured
If you crossed two heterozygous parents for a specific trait, what would the resulting genotype and phenotype ratio of offspring be?
20 POINTS
DNA is made up of monomers called nucleotides. How many does mono- represent?
Answer:
It is often said that life is “carbon-based.” This means that carbon atoms, bonded to other carbon atoms or other elements, form the fundamental components of many, if not most, of the molecules found uniquely in living things. Other elements play important roles in biological molecules, but carbon certainly qualifies as the “foundation” element for molecules in living things. It is the bonding properties of carbon atoms that are responsible for its important role.
Carbon Bonding
Explanation:
What causes the phases of the moon ?
Answer:
A).
So the basic explanation is that the lunar phases are created by changing angles (relative positions) of the earth, the moon and the sun, as the moon orbits the earth.
Explanation:
Answer:
a
Explanation:
what two types of nutrient are our main sources of energy ?
Explanation:
The nutrients that provide energy are commonly referred to as micronutrients (carbohydrates, lipids,and proteins). carbohydrates and proteins provide a similar amount of energy per gram of food.
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DUE TODAY helppp pleaswee
How one variable affects another happens in:
A. surveys.
B. case studies.
C. observations.
D. experiments.
The one variable affects another happens in experiments. Thus, option D is correct.
What is experiment?An experiment, or experimental research, is a research method in which the researcher manipulates or changes the value of one variable, (the independent variable) and measures the variable that is considered the dependent variable, in order to find how the change affects it.
The other three posible answers, observational research, survey and case study are also research methods, but the researcher can't manipulate or control any of the variables, these methods are used only to measure a specific variable.
Therefore, The one variable affects another happens in experiments. Thus, option D is correct.
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How have trees adapted to survive through the cold winter months?
Answer:
Adaption
Explanation:
Adaptations. Deciduous plants handle the lack of water by shedding their leaves, which tend to evaporate water into the air. During cold winter months, most deciduous plants drop their leaves and go dormant. Plants may hold onto dead leaves for insulation, or use deep snow like a blanket to protect against the cold.
Which of the five stages of respiration takes place at the alveoli?
Answer:
External respiration is the exchange of gases with the external environment, and occurs in the alveoli of the lungs.
The ability to curl the tongue in dominant to the inability to do so. If Eric (heterozygous tongue curler) marries Brandy (also heterozygous) what are the predicted GTs and PTs of the offspring?
Answer:
Genotype = 1CC: 2Cc: 1cc
Phenotype = 3 tongue curler : 1 non-tongue curler
Explanation:
This question involves a single gene that codes for the ability or not to curl the tongue. The ability to curl the tongue (C) is dominant to the inability to do so (c). This means that a heterozygote will be able to curl his/her tongue.
According to this question, If Eric, who is a heterozygous tongue curler (Cc) marries Brandy who is also heterozygous (Cc) i.e. Cc × Cc, the following gametes will be produced by each parent: C and c.
Using these gametes in a punnet square (see attached image), the predicted genotype of the offspring is 1CC: 2Cc: 1cc while the predicted phenotype is 3 tongue curler : 1 non-tongue curler.
While looking at a cell under a microscope you notice there is no nucleus and the
chromosomes are double stranded (they have 2 sister chromatids). What phase of mitosis is
the cell probably in?
Answer:
This is the Prophase. Mitotic Prophase,
Explanation:
The process cell division where the cells divides two similar daughter cells(2n) is called mitosis. Therefore it is called a multiplication division because two daughter cells are form from a single the mother cells. Each of the daughter cells can also undergo Futher divisions.
It is the second stage fist mitotic cells division after the first phase called Interphase.
In this stage, the nuclear membrane disappear, nucleolus disintegrate and the nucleus disappeared This is followed by the constriction of the chromosome to sister chromatids.
The constricted nuclear membrane leads to the releases of the chromatids This is followed by the formation of the spindles fibers which are needed for the movement of chromosome for cross over.
other phases are Interphase Prophase Metaphase Anaphase Telephase(IPMAT)
Is the Sun a planet? Why or why not? (3-4 sentences)
Answer:
No
Explanation:
The Sun is a star there are lots of stars,but the Sun is the closest one to Earth.It made from gases and it always burning
Planets are:Mercury, Venus, Earth, Mars, Jupiter, Saturn, and Uranus
A domestic cat has 38 chromosomes in its skin cells, while a dog has 78 chromosomes. How does this fact help to explain why dogs and cats cannot interbreed?
Answer:
The sex cells could not easily combine to form the body cells of an offspring because of the different chromosome number.
Explanation:
The fact that dog and cats cannot be interbreed because there is difference in the no. of chromosome.
What is interbreeding?
The act of mixing different species or varieties of animals or plants and thus to produce hybrids is called interbreeding.
Dogs have 78 no of chromosome which is similar to the lions and tigers but there is difference in the no of chromosomes which cannot produce viable offspring.
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how much stronger is an earthquake of magnitude 7, than an earthquake of magnitude 6?
Answer:
A magnitude of 7 is 32 times more stronger than a magnitude of 6
Explanation:
PLEASE HELP!! I NEED THIS ASAP
Answer:
Molecules Move up the concentration gradient- Passive
Requires no energy- Passive
Requires energy- Active
Molecules move with the flow- Passive
Explanation:
Passive needs no energy while Active does
related to HELP part c number 1
Answer:
Due to suitable environment of the equator.
Explanation:
Latitude is abiotic factor that has a great impact on the occurrence of fish species as we can see in the graph, the fish species increases as we go towards equator whereas decreases when we go away from the equator. This is because the climatic condition and temperature of water at the equator is suitable and warm so this suitable environment attracts more species to lives there.
Please needed as soon as Possible thank you!
Answer:
The answer is B. Stratum Basale
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Which two parts of the water cycle involve water in its gas form?
A) Condensation and collection
B) Evaporation and condensation
C) Precipitation and condensation
D) Runoff and evaporation
Explain why.
Evaporation and condensation involve water in its gas form. Hence, option B is correct.
What is the water cycle?The continual movement of water on, above, and below the Earth's surface is referred to as the water cycle, also known as the hydrologic cycle or the hydrological cycle. It is a very important cycle for the survival of living organisms.
The water cycle is composed mostly of four processes: evaporation, convection, precipitation, and collection. When the water in rivers, lakes, or the ocean is heated by the sun and turned into vapor or steam, this process is known as evaporation. In condensation, water vapors are converted into water.
The parts of the water cycle that involve water in its gas form are evaporation and condensation. Hence, option B is correct.
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What is on a transplanted organ that causes the transplant recipient's body to reject it?
Answer:
Major histocompatibility complex (MHC) antigens
Explanation:
The process in which recipient body rejects the transplanted organ is called a allograft rejection or transplantation rejection.
A transplanted organ contains Major histocompatibility complex (MHC) antigens which are required to be accepted by the recipient's body to function properly but T cells in recipient's body become alloreactive and recognize MHC antigens (donor-derived antigens) as foreign and starts making antibodies against it. Which means the recipient's body is rejecting the transplanted organ.
Hence, the correct answer is "Major histocompatibility complex (MHC) antigens".
The taxonomic classification that contains the most organisms and is the MOST inclusive is
Answer:
Domain
Explanation:
A domain is the most inclusive of the levels
Biologists have been able to keep isolated chloroplasts or
mitochondria for a few hours or days. can these structures be
considered alive?
Answer:
Isolated chloroplasts or mitochondria cannot be considered alive, because although they can survive while isolated for a few hours or days and they resemble that of an independent cell (which are alive), they don't metabolise energy, and they don't have cells.
pretend that you touch a hot pan on the stove, and you immedentially pull your hand away without thinking about it. in this scenatrio, what is the stimulus and the response?
Answer:
The stimulus the thing that stimulates you is the hot pan because you were du.mb and decided to touch the hot pan. The response is you yanking your hand away from the heat because for some reason you thought touching a hot pan was a good idea.
Explanation:
Dude seriously, be conscious.
Assume the first DNA codon for the insulin gene reads TAG. Using your codon chart, look up the amino acid that is coded for by this codon.
Answer:
Isoleucine
Explanation:
Which of the following astronomical bodies is largest?
A) Jupiter
B) the Sun
C) the Moon
D) the Milky Way
Thank you ..!
Answer:
Explanation:
milky way
Can someone please answer these for me? i’ll give brainlist
Is energy required for substances to pass in or
out of the cell?
Which of the methods of transport into or out of
the cell require energy?
Which do not?
What's the function of the cell membrane?
Answer:
energy can be needed for both passing in the cell or out of the cell, it depends on the type of transport. there is active transport and passive transport. passive transport does not require energy while active transport does. the function of the cell membrane is to act as a gateway for materials to go in and out and to choose what goes in and what doesn't and what leaves and what doesn't.
Explanation:
i took this chapter last week.
What is the ingroup in a cladogram?
Answer:
•Ingroup in biology is a group of taxa that is considered in determining evolutionary relationships. The taxa in an ingroup are closely related. In fact, they are sister groups, and they share a common ancestor. Therefore, taxa in an ingroup are descendants that split from the same node in the cladogram.
Explanation:
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Which statement about oceans is incorrect?
A) Evaporation occurs when water is warmed by the sun.
B) Most evaporation and precipitation occur over the ocean.
C) 97 percent of Earth's water is fresh water from the ocean.
D) Water leaves the ocean by the process of evaporation.
Answer:
Evaporation occurs when water is warmed by the sun
Answer: 97% of earths water is salt water that one is incorrect.
Explanation: