Answers
Answer:
dear user nitrogen fixation is so important bcoz of the reasons given above
Answer:
D. Symbiotic soil microbes convert nitrogen gas to a form that the plant can use
Explanation:
According to https://socratic.org/questions/what-is-the-importance-of-nitrogen-fixation ,
"Nitrogen fixation is a process whereby bacteria in the soil convert atmospheric nitrogen ( N2 gas) into a form that plants can use."
Hope This Helps :)
Related Questions
Mendel first crossed true-breeding plants to produce a second generation, which were then allowed to self-pollinate to generate the offspring. How do we name these three generations?
Answers
Answer:
P, F1 and F2
Explanation:
The first generation crossed which included the true breeding parents are the P generation plant. This produces the two subsequent generations which are the first filial generation (F1) and the second filial generation (F2).
What is the defining characteristic of eusocial population a. If complex communication allows for the efficient transmission of information b. If the distance between social groups is greater than the mean subpopulation census c. if the effective population size is much less than the haploid deficiency value d. if there is complete division of roles within the society particularly with regards to reproduction
Answers
Answer:
d. if there is complete division of roles within the society particularly with regards to reproduction.
Explanation:
Eusocial insects are those insects that live in a colony with only some individuals capable of reproducing. usually there is division of labour with different individuals undertaking different roles such as defence or foraging. Examples of eusocial insects are bees, ants and wasps.
Hope it helps.
Statement that explains defining characteristic of eusocial population is D: if there is complete division of roles within the society particularly with regards to reproduction.
Eusocial population usually have extreme task specialization, and this usually help colonies to achieve gathering of resources.At times, due to constraints on independent breeding, they sometimes forgo reproduction.Therefore, option D is correct.
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The result of mitosis is that the daughter cells end up with the same number of chromosomes that the parent cell had. Another way to maintain the number of chromosomes would be to carry out cell division first and then duplicate the chromosomes in each daughter cell. Do you think this would be an equally good way of organizing the cell cycle? Why do you suppose that evolution has not led to this alternative?
Answers
Answer:
No, it will not be good way of organizing the cell cycle, as cell division would occur first and duplicate the chromosomes later, it would lead to unequal distribution of chromosomes in the offspring.
E.g. let the parent cell has chromosomes A, B, C, D so when the cell will divide the chromosomes will be divided in two sets as: (A, B) and (C, D), the daughter cells will have one of these sets each. Later it will be duplicated then the result will be (A, A, B, B) and (C, C, D, D). But ideally it should be A, B, C, D, as this had not happened in the above case so the offspring or daughter cells would have half of the genetic code missing hence they could not survive in nature. That's why natural evolution had not led to this alternative.
Howard decides to study the impact that ice cream
has on fighting. In his study he learns that ice cream
is directly correlated to fighting, however once he
controls for temperature he learns that the correlation
disappears altogether. In this example ice cream was
the ____variable, fighting was the ____variable, and temperature
was the ____ variable.
_independent, intervening, dependent
-intervening, dependent, independent
-independent, dependent, intervening
-dependent, independent, intervening
Answers
Answer:
C. -independent, dependent, intervening
Explanation:
Independent variable is defined as the variable that can be changed during the experiment, dependent variable is the variable which is being tested and whose value depends on independent variable and intervening variable impacts the relationship between a dependent variable and an independent.
So, in the given study, ice cream was an independent variable as it can be changed during study and Howard wants to study its impact, fighting was a dependent variable as it is being tested and the temperature was the intervening variable as it is a cause of independent variable and also impacts the relationship between a dependent variable and an independent.
Hence, the correct option is C. independent, dependent, intervening.
what is an allele
A. one chromosome in a pair
B. a homo zygou gen type
C. something that is always dominant
D. a form of a gene
Answers
an allele is a form ofa gene
What is the function of premolars and molars? Write the number of both teeth in each jaw
Answers
Answer:
The function of the molars and premolars is to chew the food. There is 4 premolars and 6 molars in each jaw. I hope it helps you....
What information does the geologic time scale provide?
explanation of how Earth formed
places where dinosaurs roamed on Earth
reasons why organisms evolve into different species
information about when plants first appeared
Answers
Information that can be obtained from the geological time scale is the information about when plants first appeared. (Option D)
What is the geologic time scale?The geologic time scale is the method of representation of the information of the things that happened on earth based on the information that can be obtained from rocks.
An information that can be obtained from the geological time scale is the information about when plants first appeared.
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Answer: D) information about when plants first appeared
Explanation: Got it right on the test
Which cell lacks a nucleus?
Muscle cell
Euglena
Fungal cell
Bacterial cell
Answers
Answer:
Bacterial Cell
Explanation:
Prokaryotic organisms such as bacteria lack a well-defined nucleus as present in normal eukaryotic organism. Rest of the options do have nucleus.
Cellular respiration and fermentation both --- A. begin with the breakdown of glucose in glycolysis B. produce the same number of ATP molecules C. only occur in animal cells D. require oxygen molecules as a reactant
Answers
Answer:
B
Explanation:
Which statement about cellular respiration is true
A. It produces oxygen
B. It requires water
C. It is used by every living cell
D. It converts energy to food
Answers
answer
answer is( c.) it is used y every living cell
What is enzyme specificity?
Answers
Answer:
This is the tendency of enzymes to catalyse a specific set of chemical reactions.
Explanation:
This is enzyme specificity.
3. Why are cilia and flagella important?
Answers
Answer:
Involved in the movement of body and capturing of food
Explanation:
The Hadza and the Datog are both groups of tribes in Africa. Which of these has the traditionally higher-starch diet?
Answers
Answer:
The Datog has the traditionally higher-starch diet.
Explanation:
The Datog has traditionally consume higher-starch diet than the Hadza. The people of Hadza tribe take their food from the forest including berries, fiber-rich tubers, honey and meat etc. They search the forest in order to obtain food for themselves and their families while the Datog people obtain food by planting starch rich crops such as maize, beans and millet. so we can say that the Datog people consume higher-starch diet.
The walls of bronchioles lack
a. elastic tissue
b. columnar epithelium
c. smooth muscle
d. hyaline cartilage
e. ciliated cells
Answers
the area around a cell has a high concentration of sodium ions as a result the cell membrane expands and burst which problem was the cell most likely having
Answers
Answer:
Cell can't fix their internal osmotic state
Explanation:
Due to which it bursts and there is also another problem that water moves from hypotonic to hypertonic so water from cell move outside cell shrinks and die
Which statement summarizes a change that occurs during photosynthesis?
Answers
Answer:
It converts light energy to chemical energy.
Explanation:
Its absorbing sunlight and changing in to chemical energy for the plants nutrients.
During photosynthesis, light energy will be changed into chemical energy.
What is photosynthesis?Photosynthesis was a process used mostly by plants as well as other creatures to transform sunlight into chemical energy which, via cellular respiration, might subsequently be produced to fuel the organism's functions.
What is chemical energy?Chemical energy was the energy that would be generated while chemical substances engage in a chemical reaction but also change into some other substances.
Therefore, during photosynthesis, light energy will be changed into chemical energy.
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Ernst Haeckel (1834–1919), a German biologist and naturalist, disagreed with von Baer and further expanded on the Meckel–Serres law with his biogenetic law. What does the biogenic law claim?
Answers
Answer:
Simply it states that the progress of development of an organism is a recapitulation of the organism's evolutionary history, and thus its progeny.
Explanation:
Hence based on this the stages of developments of an embryo are similar to developments stages seen in adult forms.Therefore it is can be stated as recapitulation of phylogeny by ontogeny . Thus the developmental stages observed in an embryo, are summary oft he adult forms of its progeny.Therefore, studying this developmental stages in an embryo is in effects studying the diversification of life on earth, and its history.
In summary the developmental stages of the embryo is a good method to detect the similarities between taxa, and findings from these can provide evidences that their is a common ancestry for all species of organism on earth.
In the late 1800s, a researcher by the name of Robert Koch developed a series of postulates (guidelines) that can be used to prove that a given pathogen is the true cause of a disease.
Koch's Postulates
1. The suspected causative agent must be found in every case of the disease and be absent from healthy hosts.
2. The agent must be isolated and grown outside the host.
3. When the agent is introduced to a healthy, susceptible host, the host must get the disease.
4. The same agent must be found in the diseased experimental host.
Which of the following steps does NOT follow one of Koch's postulates?
Pick step that does NOT follow the postulates.
a) You are able to isolate a pathogenic bacterium from someone with a new type of pharyngitis.
b) You collect a throat swab from a family member who has also become sick.
c) A mouse that was exposed to a potential viral pathogen has died and you are able to isolate the virus from the liver of the mouse.
d) You give a patient an antibiotic to treat an infection.
Answers
Answer:
d) You give a patient an antibiotic to treat an infection.
Explanation:
Robert Koch is regarded as one of the fathers of modern bacteriology. This researcher discovered the anthrax bacterium and its transmission cycle. In 1884, Koch and Loeffler developed a series of rules that helped to understand the existing associations between a microbe and a disease. Koch used these rules to explain the causative relationships for two different diseases (tuberculosis and cholera); however, these postulates can be indistinctly used to explain the etiology of other diseases caused by both bacteria and viruses.
You are going to enter a biology science fair. You and your friends have come up with some interesting ideas. Look at the questions below and choose all of the questions that are testable and would lead to a good science fair project. Is the Abominable Snowman afraid of rats? Does feeding peanuts to chickens make their eggs larger? Do the chirps of a cricket indicate air temperature? Why are small dogs more cuddly than large dogs?
Answers
Answer:
The questions 'Does feeding peanuts to chickens make their eggs larger?' and 'Do the chirps of crickets indicate air temperature?' would lead to a good science fair project.
Answer:
Answer 2, 3 are correct
Explanation:
Question 6 (5 points)
Which of the following is not a type of neuron found in the body?
Sensory neurons
Endocrine neurons
Motor neurons
Interneurons
Answers
Answer:
The answer is Endocrine neurons
Hope this helps
Answer:
Endocrine neurons
Explanation:
Sensory neurons carry signals from organs to the central nervous system. Motor neurons carry impulses from the central nervous system to muscles to control movement. Interneurons process information going between the other two types of neurons. Endocrine neurons do not exist.
how a chromosome is formed
Answers
Answer: In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
What kind of information does the nutrition facts give about requirements for essential nutrients?
Answers
Answer:
the percent of various nutirents in one serving.
Explanation:
If you look on the back of a food item you can read the different percentages of vitamins and other nutrients in the product.
You are working as an intern in a small biotechnology company that is trying to develop genetic engineering approaches to improve the ability of humans to swim under water without SCUBA equipment or other sources of oxygen. As a physiologist, you realize that this problem has already been solved by marine mammals and birds who are able to function under water for extended periods of time. You decide to do some background research on diving mammals and birds and prepare a list of possible strategies to present at the next research staff meeting.State two possible strategies for enhancing the ability of humans to function under water without access to additional oxygen and briefly discuss why you think each strategy would be effective.
Answers
Answer:
1- By eating a supplement that enhances the ability of red blood cells to transport oxygen, thereby reducing the oxygen dependence
2- By developing structures that help to support high pressures, thus improving the ability to breathe in deeper marine habitats
Explanation:
Recently, it has been shown that beneficial mutations provided to marine mammals a biological adaptation associated with a higher ability to transport oxygen in red blood cells when compared to terrestrial mammals. This adaptation enables marine mammals to breathe less frequently to obtain the same amount of oxygen.
In birds, the airflow is unidirectional (i.e., inhalation and exhalation are complete), rather than mammals where the air in and out of the lungs. This mode of respiration helps the birds to tolerate the high pressures during flight.
The strategies for enhancing the ability of humans to function under water without access to additional oxygen will be:
Increased positively charged proteins known as myoglobin.Controlled breathing.It should be noted that one of the strategies for enhancing the ability of humans to function under water without access to additional oxygen will be controlled breathing.
Another factor that can be used is the increased level of haemoglobin content. Lastly, increase in myoglobin can be vital for this procedure too.
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Convert 9.75 millimeters to centimeters. centimeters
Answers
Answer:
here,
10mm = 1cm
or, 1 mm=1/10 cm
or, 9.75mm=1/10×9.75cm
=0.975 ..........is the answer
hope it helps..
Answer:
.975
Explanation:
my brain:)
What happens to weather patterns when a cold front approaches? What happens to
weather patterns when a warm front approaches?
Answers
Answer:When a cold front happens when speaking gusty, there is a sudden drop in temperature, and there is heavy rain. When warm front approaches, The air becomes noticeably warmer and more humid than it was before.
Explanation:
the person above me is right
The NADH and FADH2 molecules that are used during the reactions of the electron transport chain are derived from glycolysis, the preparatory reactions, and the citric acid cycle.
a) true
b) false
Answers
Answer:
The correct answer is option a) "true".
Explanation:
The electron transport chain that takes place in mitochondria during cellular respiration is interconnected with several other biological pathways in the cell. These pathways include glycolysis, the preparatory reactions, and the citric acid cycle, where NADH and FADH2 molecules are synthesized. In glycolysis and citric acid cycle, 2 NADH and 3 NADH molecules are synthesized, respectively. Regarding FADH2, one molecule of this compound is synthesized per each cycle of the citric acid cycle.
Chemical synthesis of peptides by the Merrifield method:_______.
a. has a practical upper limit of a polymer of about 500 amino acid residues.
b. involves synthesizing the peptide and then attaching it to a solid support.
c. is nearly as efficient as peptide bond synthesis in biochemical systems.
d. proceeds from the carboxyl terminus to the amino terminus.
Answers
Answer:
b. involves synthesizing the peptide and then attaching it to a solid support
the amino acid is reacted with a molecule known as a "linkage agent" that enables it to attach to a solid polymer, and the other end of the linkage agent is reacted with the polymer support (insoluble)
The Punnett square on p. 70 of your lab manual shows the genotypes of two parents for trait R. Use this Punnett square to answer the questions in this exercise. Trait R is the Mendelian trait in humans for tongue rolling. The allele for the ability to roll the tongue (R) is dominant over the allele for the inability to roll the tongue (r). Mom R r R RR Rr Dad r Rr rr1. What is the mother's genotype? 2. What is the mother's phenotype? 3. What is the father's genotype?4. What is father's phenotype? 5. What is the probability of their daughter Maria having each of the possible genotypes and phenotypes? 6. Are you 100% sure of the parents' phenotypes? Are you 100% sure of Maria's phenotype? If not which are problematic? Why? 7. Are you 100% sure of the parents' genotypes? Are you 100% sure of Maria's genotype?
Answers
Answer and Explanation:
You will find the answers and further explanations posted as an attachment due to technical difficulties.
Non-metals are used to make insulator-Why?
Answers
Answer:
non-metallic solids are said to be good insulators, having extremely high resistance to the flow of charge through them.Most atoms hold on to their electrons tightly and are insulators.Electricity can only be conducted by the motion of electrons or ions. Non-metals do not conduct electricity because unlike metals, they have no free electrons
Explanation:
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Explain two situations in which it would be important/useful to be able to predict the phenotype and/or genotype of offspring from a cross
Answers
Answer:
The two situations in which it would be important/useful to be able to predict the phenotype and/or genotype of offspring from a cross include Genetic counseling before marriage so as to enlighten the individuals on the importance and to reduce the risk of having sickle cell offsprings.
The other reason is for paternity and maternity tests. The genotypes and phenotypes are important factors in knowing the paternity of individuals due to the knowledge of genotypic and phenotypic constituents of the individual.