Answer:
D. it allows plants to use nitrogen to grow
It allows plants to use nitrogen to grow. Therefore, option (C) is correct.
Nitrogen fixation turns atmospheric nitrogen gas (N2) into a form plants can use. Nitrogen-fixing bacteria, either soil-dwelling or symbiotic with plants, do this function.
Nitrogen fixation converts atmospheric nitrogen into ammonium ([tex]NH^{4+}[/tex]) or nitrate ([tex]NO^{3-}[/tex]) ions, which plants need to flourish. Nitrogen is necessary for plant protein, nucleic acid, and other synthesis. Plants would suffer nutritional deficits without fixed nitrogen.
Nitrogen fixation helps microorganisms develop by providing useable nitrogen for the ecosystem. Nitrogen fixation supports the nitrogen cycle, soil fertility, and agriculture by lowering the demand for synthetic nitrogen fertilizers. Therefore, option (C) is correct.
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Explain Mendel’s laws in genetic terms, that is, in terms of chromosomes, genes, and alleles.
Answer:
Law of segregation is when two genes control the alleles and those two genes go to two different chromosomes. Law of independent assortment is when two genes control the alleles and are inherited independently.
Explanation:
Mendel’s laws in genetic terms, that is, in terms of chromosomes, genes, and alleles states that the genes activity along with the expressions that they express within the progeny.
What is a gene ?It is defined as unit of inheritance that states that gene basically controls the expression of the character and pass on through chromosome.
Mendel's law of independent assortment states that the chromosomes express themselves individually that the genes are expressed independently in the process of inheritance in the progeny.
Law of segregation says that the genes gets segregated before passing on to their progeny before expressing they assort independently and segregate as such in the progeny.
Mendel's law of segregation is the first division of meiosis in which the homologous chromosomes with their different versions of each gene are segregated into daughter nuclei.
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5. What are vertebrae?
A. small bones making up the backbone or spine
B. bones that the spinal cord runs through
C. bones that have joints allowing the spine to bend D. all of the above
Answer:D all the the above
Explanation:
Answer:
each of the series of small bones forming the backbone, having several projections for articulation and muscle attachment, and a hole through which the spinal cord passes.
Explanation:
Do oraginsions have to look the same in oder to be the same species?
Answer:
yes
Explanation:
In Betta fish, colored bodies (B) are dominant to white bodies (b), and blue tails (T) are dominant to black tails (t). A Betta fish that is homozygous for having a colored body and a blue tail (BBTT) is crossed with a Betta that is white with a black tail (bbtt). What are the chances of producing an offspring that is white with a blue tail? *
Answer:
0
Explanation:
This question involves two genes in Betta fish; one coding for body color and the other coding for tail colour. The allele for colored body (B) is dominant over the allele for white body (b) in the first gene while allele for blue tail (T) is dominant over allele for black tail (t) in the second gene.
Thus, in a cross between a Betafish that is homozygous dominant for both genes (BBTT) and homozygous recessive for both genes (bbtt), each parent will produce only one type of gamete combination
BBTT- BT
bbtt- bt
Using this in a punnet square, all offsprings will possess a genotype: BbTt.
Since alleles B and T are dominant, a Bettafish with genotype BbTt will be phenotypically color-bodied and blue-tailed.
Hence, according to the question, the probability of producing an offspring with white body and blue tails will be O since no offspring has such genotype.
The chance of producing an offspring that is white with a blue tail from the described cross in Betta fish is 3/16 or about 18.75%.
To determine the chances of producing an offspring that is white with a blue tail when a Betta fish that is homozygous for having a colored body and a blue tail (BBTT) is crossed with a Betta that is white with a black tail (bbtt), a Punnett square can be used for each trait separately. Since one parent is homozygous dominant for both traits and the other is homozygous recessive, all offspring (F1 generation) will be heterozygous (BbTt) for both traits, displaying the dominant phenotypes: colored body and blue tail.
If two of the F1 heterozygous Betta fish (BbTt) are crossed, the resulting F2 generation will exhibit a variety of genotypes. The traits segregate independently, following Mendelian genetics patterns, which indicate a 9:3:3:1 phenotypic ratio for the two traits when F1 individuals mate.
Therefore, the chance of an offspring that is white with a blue tail (bbT-) will be calculated by determining the probability of the offspring being homozygous recessive for body color (bb) and having at least one dominant allele for tail color (T). This corresponds to 1/4 being homozygous recessive for body color multiplied by 3/4 having a blue tail (since both Tt and TT result in a blue tail), which equals 1/4 * 3/4 = 3/16, or about 18.75%.
Fish, trees, and animals are important wildlife resources that we depend on for survival. Fish are a main source of food for many of the people in the world. Trees have been used to build and heat homes, make paper, and provide food for centuries. Humans hunt land animals such as deer, fox, antelope, and buffalo for food and other products. What can we do to protect wildlife resources so they will be around for future generations? can someone help
To protect wildlife resources for future generations, we can implement sustainable management practices, educate people about conservation, and promote alternative livelihoods.
Explanation:To protect wildlife resources for future generations, several measures can be taken. One approach is to implement sustainable management practices, such as setting fishing limits and establishing protected areas. By regulating access and preventing overexploitation, we can ensure that wildlife populations are not driven to extinction. Additionally, educating people about the importance of conservation and promoting alternative livelihoods can help reduce the pressure on wildlife resources.
What type of proteins function as building blocks for larger structures ? ASAP plz
Answer:
The protein building blocks for larger structures are called amino acids.
Explanation:
Protein synthesis allows these amino acids to be manufactured. Soon they link together to form larger protein structures. The shape of the protein impacts its ultimate function.
Based on the passage, both plants and humans
I NEED THIS RIGHT NOW! Can someone please help me.
Answer:
b
Explanation:
Which of the following planets has one moon? Group of answer choices Earth Jupiter Neptune Saturn
Answer:
earth
Explanation:
Jupiter has 79 moons and Neptune has 14 moons and Saturn has 62 moons
Select the correct answer from each drop-down menu.
How can you reduce air pollution arising from transportation?
Use
Avoid
because they emit relatively less pollution
to reduce the emission of pollutants.
Answer:
We can reduce air pollution by using vehicles run by electricity which emitted no harmful gases while we have to avoid vehicles which uses fossil fuels for running because it produces a lot of harmful gases and pollute the environment.
Explanation:
Air pollution is increasing day by day due to the use of fossil fuels such as petrol and diesel, in the vehicles which is burn in the engine and releases harmful gases such as carbondioxide gas etc. This gas is also responsible for the global warming of the earth atmosphere.
Answer:
carpool & accelerating rapidly
Explanation might be right!
PLZ HELP!!! I'm timed. I need answer as soon as possible. Will mark the brainliest if correct and ad a thanks with a rate of 5 too. thank you :) .
Which definition best describes global warming?
a long-term change in the Earth's climate
a long-term increase in the Earth's average temperature
a long-term change in the climate of a region or a city
solar heat that is radiated out into space
Answer:
I think it's the 2nd one
Cell membranes are selectively permeable, regulating which substances can pass through, as well as how much of each substance can enter or exit at a given time. In cells, some molecules can move down their concentration gradients by crossing the phospholipid portion of the membrane directly, while others must pass through membrane proteins. Which of these statements does NOT apply to facilitated diffusion?
Facilitated diffusion is a form of passive transport that involves the movement of molecules down their concentration gradient with the help of specific transport proteins.
Explanation:Facilitated diffusion is a form of passive transport that allows large, polar, or charged molecules to cross the cell membrane with the help of specific transport proteins. Unlike simple diffusion, facilitated diffusion does not require energy and involves the movement of molecules down their concentration gradient. It is important to note that facilitated diffusion only refers to the movement of substances through membrane proteins and not the direct crossing of the phospholipid bilayer.
Protozoans (animal-like) because they can gather food and ________
Answer:
heterotrophs
Explanation:
Protozoans (animal-like) because they can gather food and heterotrophs
Maya made the diagram below to represent ultraviolet rays, radio waves, gamma waves, and infrared rays based on their properties.
Which of the following best represents a radio wave?
Wave A
Wave B
Wave C
Wave D
Because they often survive at extreme temperatures, _______ are thought you have been the first organisms on the early earth
Answer:
Extremophiles
Explanation:
Extremophiles are organisms that have been discovered on Earth that survive in environments that were once thought not to be able to sustain life. These extreme environments include intense heat, highly acidic environments, extreme pressure and extreme cold. Different organisms have developed varying ways of adapting to these environments, but most scientists agree that it is unlikely that life on Earth originated under such extremes.
How would you define the following terms: category fallacy and unity of identity?
The deepest ocean trenches have high salt concentrations that can reach upwards of
10 pounds per square centimeter.
10 tons per square inch.
10 pounds per square inch.
10 tons per square centimeter.
Answer:
Its 10 Tons per square centimeter
Explanation:
The deepest ocean trenches have high salt concentrations that can reach upwards of 10 tons per square centimeter.
What are the functions of ocean trench?Oceanic trenches are prominent long, narrow topographic depressions of the ocean floor. They are typically 50 to 100 kilometers wide and 3 to 4 km below the level of the surrounding oceanic floor.
Ocean trenches are a result of tectonic activity, which describes the movement of the Earth's lithosphere.
Trenches are formed through subduction, which occurs when tectonic plates collide and push one plate beneath the other.
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Which of the following is an example of homeostasis?
A) In a dangerous situation, your senses heighten, your muscles tense, and your heart pumps faster.
B) If you are sleepy, you can drink coffee to stay awake.
C) When you are sick, your body temperature increases and you get a fever.
D) When you drink a lot of water, you urinate (pee) more than usual.
Answer:
C) When you are sick, your body temperature increases and you get a fever.
Explanation:
Identify each of the following as a positive or negative impact of science on society. In 1965, Congress passed the Cigarette Labeling and Advertising Act. In the 1930s, medical journal articles linked asbestos to cancer. For more than 2,000 years, asbestos has been used in home insulation, roofing, cements, tiling, and brake pads. In the 2000s, industries specialize in asbestos reduction. Scientists provided evidence that secondhand smoke causes cancer.
Answer:
Positive impact
Positive impact
Negative impact
Positive impact
Positive impact
Answer:
Positive impact
Positive impact
Negative impact
Positive impact
Positive impact
Explanation:
Which is an example of an effect caused by Earth's magnetism?
A) Earth's magnetic field causes earthquakes.
B) Earth's magnetic poles repel the continents.
C) Earth's magnetic field causes volcanic eruptions.
D) Earth's magnetic poles attract the poles of a compass needle.
Answer: I think it's A. Correct me if i'm wrong.
Hope it helps! :D
Answer:
the answer is D
Explanation:
I need help with number 12 please
What advantage does nuclear power have over fossil fuels?
A. It is less expensive
B. It has less risk of a dangerous explosion
C. It is available to poor countries
D. It has no negative byproducts
Answer:
D}
Explanation:
Answer:
A. It is less expensive
Hope this helps :)
Which is biotic?
water
temperature
beeswax
rocks
Answer:
beeswax
Explanation:
water is abiotic
temp is abiotic
rock are abiotic
and beeswax has to be biotic
Which of the following is not a physical factor that affects ventilation?
A.
size of the alveoli
B.
thoracic wall compliance
C.
size of the airway
D.
contraction and relaxation of muscle fibers
Which stimulus most likely caused the leaves on
these trees to turn from green to yellow?
o
too much water
change in soil
change in seasons
too much sunlight
Answer:
change in seasons
Explanation:
Answer:
Change in seasons
Explanation:
The amount of daylight leaves get changes in the fall, and in response, the chlorophyll (makes the leaves appear green) breaks down to reveal the carotenoid (yellow/orange colors).
Transition step:
Each pyruvic acid molecule is transported to the ____________
A one carbon molecule called _____ is released from each molecule of pyruvic acid and the remaining 2-carbon unit that is formed is called ________.
CoenzymeA is then attached to _ ____ to form ____________.
Additional energy is stored as reduced ______ molecules
Answer: mitochondrion, carboxylic group , acetyl group, acetyl group, acetyl CoA, NADH
Explanation:
Two pyruvate molecules remain at the end of glycolysis which still have a lot of extractable energy. The next step in storing the remaining energy in the form of ATP is oxidation by pyruvate. The transition steps are as following:
Pyruvate must join the mitochondrion, cross its inner membrane and arrive at the matrix before the chemical reactions can begin. A group of carboxyl (one carbon molecule) is snipped off of pyruvate and released as a carbon dioxide molecule, leaving behind a two-carbon molecule called the acetyl group. The oxidised two-carbon molecule, acetyl group attached to Coenzyme A to form acetyl CoA.The additional energy during conversion is reduced NADH molecules and two carbon dioxide molecule.Hence the correct order to fill the blanks is mitochondrion, carboxylic group , acetyl group, acetyl group, acetyl CoA, NADH.
Select the pair of bodies which are most alike in composition and size.
A. Earth and Venus
B. meteor and comet
C. Earth and Neptune
D .asteroid and comet
Answer: a
Explanation: because science
Earth and Venus are most alike in composition and size. Therefore, option A is correct.
What are the similarities and differences between earth and venus?Venus and Earth share many properties in common, including size, mass, density, and elemental makeup. Venus has a toxic atmosphere and an uninhabitable surface due to the vast differences between the planets' atmospheres, temperatures, and surfaces. Because of its resemblance to Earth, Venus is occasionally referred to as Earth's twin.
Our solar system contains the planets Venus and Earth, with Venus being the second closest to the sun and Earth being the third. The earth's mass is roughly 1.23 times that of Venus. Venus is hotter than Earth due to its proximity to the sun.
Earth and Venus are most alike in composition and size. Therefore, option A is correct.
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This one is also very difficult help
What is the genotype of the offspring
The genotype of the offspring is likely heterozygous (Bb), with one black feather allele (B) and one white feather allele (W).
In genetics, the color of chicken feathers is often determined by multiple alleles at a single gene locus.
Let's use the letter "B" to represent the allele for black feathers and "W" for white feathers.
Since the chicken with black feathers is denoted as BB and the one with white feathers as WW, we can infer that black feathers (B) are dominant over white feathers (W).
When these two chickens are crossed, the resulting offspring will inherit one allele from each parent.
The genotype of the offspring will be BW, indicating that they carry both a black allele (B) from one parent and a white allele (W) from the other parent.
Despite having both alleles, the phenotype, or the observed trait, is black feathers, as the black allele is dominant.
In a more detailed explanation, the genotype of the offspring can be heterozygous (Bb), with one black allele and one white allele.
However, since black is the dominant trait, the presence of the black allele will determine the phenotype.
This type of genetic cross, involving a dominant and a recessive allele, results in a phenotypic expression that reflects the dominant allele's characteristics.
Complete this equation and balance it
During which stage of mitosis do the chromosomes attach to the spindle fibers and line up in the center of the cell?
Anaphase
Interphase
Metaphase
Telophase
Answer:
C. Metaphase
Explanation: