Answer:
Hey there!
We have:
4 students with 5 marks.
8 students with 6 marks.
10 students with 7 marks.
7 students with 8 marks.
13 students with 9 marks.
3 students with 10 marks.
Thus, the mean is: [tex]\frac{4(5)+8(6)+10(7)+7(8)+13(9)+3(10)}{4+8+10+7+13+3}[/tex], or around 7.58 marks.
The median is the middle number and since we have 45 people, the middle number would be the 23rd. 4+8+10+1=23, Thus, 8 marks i s the median.
The mode is the most common score, which is 9.
The range is the range of all the values, which is from 5-10. Thus, giving us a range of 10-5, or 5.
Hope this helps :)
Which three processes are methods of genetic recombination?
w
O natural selection, crossing over, and independent assortment
crossing over, independent assortment, and fertilization
O independent assortment, fertilization, and natural selection
O fertilization, natural selection, and crossing over
Answer:
crossing over, independent assortment and fertilization
Explanation:
Genetic recombination is the production of offspring.which possess combination of traits that differ from those found in either of the parents
The three processes that are the methods of genetic recombination are as follows:
Crossing over, independent assortment, and fertilization.Thus, the correct option is B.
What is Genetic recombination?Genetic recombination may be defined as the process through which the interchange of genetic material between different organisms occurs that leads to the production of offspring with combinations of traits that are not exactly identical to their parents.
Natural selection does not lead to genetic recombination among individuals. It may be characterized as the process in nature through which diverse organisms better adapted to their environment tend to survive and reproduce more than those less adapted to their environment.
While the processes like crossing over, fertilization, and independent assortments are the methods that significantly lead to the genetic recombination among organisms.
Therefore, the correct option for this question is B.
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Q. Habitat loss occurs due to agriculture, forestry, and other human activities. Describe the effect of these activities on species diversity in the ecosystems in which they occur, and how this would affect the stability of these ecosystems over time.
Answer:
Explanation:
Human activities had led to diversity of species in ecosystem. Some of the species of animal have been lost and displace due to human activity such as deforestation, construction, company establishment.
Clearing of land for agriculture use has also contributed to diversity that occur in the habitat of an animal.
Diversity of an habitat leads to an unstable ecosystem, as animals can no longer thrive and live in their environment, some species of animals are lost including important species in the environment in the process and others struggles to survive.
Reduction of human activities in animals natural habitat can help restore diversity.
Which of the following includes all the plants, animals, bacteria and other living things in an area?
- community
-consumer
-ecosystem
-population
Answer:
Community
Explanation:
Community includes all the plants, animals, bacteria and other living things in an area
Answer I am sure that the right answer is consumer
Explanation:
A certain drug is made from only two ingredients: compound A and compound B. There are
6 milliliters of compound A used for every
5 milliliters of compound B. If a chemist wants to make
726
milliliters of the drug, how many milliliters of compound B are needed?
A certain drug is made from only two ingredients: compound A and compound B. There are 5 milliliters of compound A used for every 4 milliliters of compound B. If a chemist uses 255 milliliters of compound A, how many milliliters of the drug will be made?
----------------------------------
4:5 is the same as 4x:5x where 4x is compound A and 5x is compound B.
---
Solve for "x":
If amount of compound A is 4x = 255
x = 255/4
------------------------------
Then amount of compound B is 5x = 5(255/4) = 318.75 ml
=========================
Cheers !!!
===============
Dinobryon is a species of protozoa that reproduces asexually. How is it better for the survival of the species for the protozoa to reproduce asexually instead of sexually? A.They do not use up any energy finding mates. B.They use more cellular energy in reproduction. C.They have less genetic diversity in their populations. D.Their populations do not grow too quickl
Answer:
A. They do not use up any energy finding mates.
Explanation:
The asexual reproduction consists of one parent which are same to each other while on the other hand consists of two parent that produced unique.
For species survival, the reproduction of protozoa asexually rather than sexually could be better when they don't use much time and energy for determining the mates
Therefore in the given case the correct option is A.
Answer: A.They do not use up any energy finding mates.
Explanation:
I just did it on a p e x and i got it correct
The gene form of a trait is called a(n)_____. An organism’s allele combination is called the_______ . The physical appearance of an organism is called the________.
Answer:
The gene form of a trait is called a(n) allele.
An organism’s allele combination is called the genotype.
The physical appearance of an organism is called the phenotype.
Explanation:
Genes are segments of DNA that are the basic unit of heredity. They are passed on from parent to offspring.
A gene can be defined as the heredity unit which is transferred form the parent to the offspring and is responsible for determining the characteristics in an individual.
The gene form of a trait is known as an allele.Genotype refers to the genetic/allelic composition for a trait.Phenotype refers to the physical appearance of the genotype.The given blanks can be filled with allele, genotype, and phenotype, respectively.
https://brainly.com/question/12116830
refused to let Americans ship products down the
Mississippi River.
Canada
Spain
Britain
France
Answer:
its Spain
Explanation:
1. How does an increase in concentration affect a chemical reaction?
Answer:
it speeds the reaction up
Explanation:
Answer:
speeds the reaction up, making it quicker
Explanation:
Partical A has very little mass in comparison to partical B. Both Particals are in the same atom. which is the best conclusion about Particals A and B?
A. They have opposite charges
B. They are located in the nucleus together.
C. Partical A has a negative charge, and Partical B is neutral.
D. Partical A orbits the nucleus, and Partical B is located in the nucleus
Answer:
D. Particle A orbits the nucleus, and Particle B is located in the nucleus
Explanation:
Here since both particles are of the same atom and particle A is much lighter we can infer that Particle A is electron because electrons are much lighter than protons which are Particle B in this case. Thus, particle A orbits nucleus as an electron does and particle B is in nucleus where protons are.
Why do I still need the paper that I got out from mental health?
Answer:
Because it is important that you still have the paper for future reference to show that you have passed your mental health classes and do not have to take them again.
Answer:
If you didn't have the paper how would people know that you did officially get out of mental health? Also it shows that you were once in a mental health
Hope this helps!
An entomologist writes an article in a scientific journal which claims that fewer than 11 in ten thousand male fireflies are unable to produce light due to a genetic mutation. identify the type i error for the test.
Answer:
The correct answer is given as:
The error of rejecting the claim that the true proportion is fewer than 0.0011% when it really is lower than 0.0011%
Explanation:
When executing hypothesis testing, the probability of rejecting a true null hypothesis is referred to as type one error is.
When on the other hand there is the probability of not rejecting the null hypothesis when its actually false, type two error is said to have occurred.
The strenght/quality of a good test is the probability of rejecting a false null hypothesis.
Cheers!
What kind(s) of cells can develop from multipotent stem cells?
A. Any cells of the human body, but not cells of the placenta
B. Only cells that are identical to the original stem cell
C. Any cells of the human body or the placenta
D. Only cells that are closely related to the original stem cell
Any cells of the human body, but not cells of the placenta can develop from multipotent stem cells. So, the correct option is A.
What are multipotent stem cells?A specific form of stem cell called multipotent stem cells can only differentiate into a small number of distinct cell types within a given tissue or organ. Multipotent stem cells are more specialized and can only differentiate into specific types of cells, in contrast to pluripotent stem cells, which may differentiate into every form of cell in the body.
Hematopoietic stem cells, which give rise to many blood cell types, and mesenchymal stem cells, which can develop into bone, cartilage, and fat cells, are two examples of multipotent stem cells. Multiple, closely linked cell types of a particular lineage or tissue type can be differentiated into by multipotent stem cells. Human multipotent stem cells have the ability to differentiate into any type of cell in the body, save for placental cells.
Therefore, the correct option is A.
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Q) Explain the term ; Diatomaceous Earth
Answer:
This is a natural rock that is easily smashed into a fine white to off-white powder.
Explanation:
It has a particle size ranging from less than 3 um to more than 1 mm.
Hope it helps.
Which of the following aquatic environments would not freeze in winter?
Answer:
summer and springtsdfggu
which type of molecule that can be found in living things lax carbon atoms
an Association between the root noodles of leguminous plant and rhizobium SP is known as what
Answer:
The question lacks options, the options are:
A. commensalism
B. mycorrhiza
C. parasitism
D. symbiosis
The answer is D, symbiosis (mutualism)
Explanation:
Organisms of same or different species interact with one another in their natural environment. The relationship between two organisms interacting with one another is called SYMBIOSIS. Symbiosis can be of different types depending on the effect of the relationship on the involved organisms. Symbiosis can be mutualistic, commensalistic or parasitic.
Mutualism is a kind of symbiosis in which the involved organisms benefit from the actions of one another. This is a case of the association between the root nodules of leguminous plant and rhizobium species.
Rhizobium is a bacteria genus found in the soil. They form nodules by attaching to the root of leguminous plants, which helps the plants to fix atmospheric nitrogen i.e converting gaseous nitrogen to a usable form (ammonia). In return, the plants provide organic acids for the Rhizobia bacteria, which they use as carbon and energy source. Hence, the association is a symbiotic relationship and specifically a mutualistic one.
The answer is no mycorrhiza because it is an association between a FUNGUS and a plant.
Answer:
noooooooooooooooooooooo
Explanation:
really
What is the answer ?
Answer:C
Explanation:
Answer:
the answer is c.
Explanation:
took the test
: Which of the following is not a sign of sepsis? Which of the following is not a sign of sepsis? increased white blood cell count body temperature above 101°F (38.3°C) or below 96.8°F (36°C) increased respiratory rate (more than 20 breaths per minute) dilated pupils rapid heart rate (more than 90 beats per minute)
Answer: The correct answer to the question is DILATED PUPILS.
DILATED PUPILS is not a sign of sepsis.
Explanation: Sepsis can be defined as the way our body system respond to infection or invasion of a foreign body into the body system.(usually bacterial infection)
When Sepsis becomes severe,it is injurious to organs of the body(affects their function in a negative way).
Sepsis occurs when the body's immune system tends to fight infection in the body by the release of certain chemicals(cytokines and prostaglandins),the body instead of reacting in a coordinated manner to these chemicals rather reacts out of proportion to these chemicals released to fight infection and this will lead damage to organs of the body system.
Sepsis is characterised by Fever(above 101°F (38.3°C) or below 96.8°F (36°C), increased in respiratory rate (more than 20 breaths per minute), Increased heart rate (more than 90 beats per minute),increased white blood cell count,low blood pressure and mental confusion.
Treatment of Sepsis includes the administration of antibiotics and intravenous fluid, administration of drugs to support blood pressure and administration of steroids.
Which of the following statements associated with cellulose is false? A) It's a linear polymer of glucose. B) The glycosidic linkage is β(1 → 4). C) Hydrolysis is accomplished enzymatically by cellulase. D) Most animals can easily digest this compound.
Answer:
Most animals can easily digest this compound
Explanation:
Cellulose is a linear polymer of glucose comprising of beta 1,4-glycosidic linkage of glucose molecules; this is where it differs from starch. Cellulose is a polysaccharide made of glucose monomers just like starch. The enzymatic hydrolysis of cellulose is achieved by the enzyme cellulase.
Not all animals can digest cellulose. As a mater of fact, no vertebrate can digest cellulose directly. Many herbivorous animals possess symbiotic bacteria in their gastrointestinal tract which enables the digestion of cellulose. These bacteria possess the requisite enzymes for the digestion of cellulose.
A disease is introduced to the island which kills only the plants that produce the large seeds. Consider changes in the bird population following the death of all plants that produce large seeds. Which portion(s) of the finch population will be selected against and least likely to have their genes represented in the next generations
Answer:
Explanation:
Following the death of all plants that produce large seeds, this will lead to a reduction in the population of the finches with large beak sizes since they are the ones that mainly utilized this plant food.
Their portion will be selected against and least likely to have their genes represented in the next generations.
Population
250
200
175
150
Number of Rats (in thousands)
125
100
100
90
76
75
50
130
45
SO
25
110
O
1
2
3
5 6
7
8
10
Year
Based on the graph, at what time did the rat population meet the carrying
capacity of the habitat?
A. Year 5
B. Year 8
C. Year 6
D. Year 2
Answer:
b
Explanation:
i took this before and i know its b
A food handler who fails to report illness to the person in charge could cause a physical contamination?
Answer:
True
Explanation:
Physical contamination are foreign objects such as hair, fingernails, broken glasses , jewelries etc that are mixed with food. Although, it is important for a food handler who realizes that he is sick such as having fever, jaundice,wound while working to report such to his supervisor or manager,who will then take necessary action and to avoid risk of contamination; yet not the only cause of physical food contamination.
Physical contamination does not necessarily have to occur until the food handler is sick. It could be as a result of carelessness or not paying attention enough by the food handler . Physical contamination might not at all times cause injury or illness to the customer, yet such could bring discomfort to a customer who notices foreign objects in his food while eating. To avoid risk of physical food contamination, it is important for food handlers to keep jewelries to a minimum, wash fruits and vegetables thoroughly, wear hear neatly tied back, throw out and replace cracked, chipped, or broken dishware, glassware and equipment amongst others.
What is the basic purpose of cellular respiration? What are the reactants and products of cellular respiration overall? Also, give a basic description of the three main stages of cellular respiration (glycolysis, Kreb cycle, and the electron transport chain)
Answer:
The Main basic purpose is to be able to breath and live. Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP; waste products include carbon dioxide and water.The three main stages of cellular respiration (aerobic) would include Glycolysis, the Krebs Cycle and the Electron Transport Chain. The Krebs Cycle takes Citric Acid which is a derivative of Pyruvic Acid and converts this through 4 cycles into Hydrogen, carbon dioxide and water in the Mitochondrial Matrix.
Hemophilia is an X-linked recessive disorder (Xh) that is passed through generations and can be traced by using a pedigree. Based on the pedigree that is shown, which describes John? A)carrier for hemophilia B)expresses hemophilia C)does not have hemophilia D)expresses hemophilia and died of complications
Answer:
C) Does not have hemophilia
Explanation:
When a pedigree is half shaded, the person is a carrier.
When a pedigree is not shaded, the person doesn't express the gene.
When a pedigree is completely shaded, the person is affected.
Square usually is male and circles are usually female.
Since John is the non-shaded square and parent of 4 offspring, he does not have hemophilia. However, his wife is a carrier, and that's how their offspring have hemophilia.
Answer:
C
Explanation:
Plz help ASAP assignment due today !!!
What is corona virus. What are ill-effects of this disease? How we can safeguard ourselves from this virus. What foods boost our immunity.
Answer:
Corona virus is a respiratory disease that has been recently discovered in late 2019. Ill effects of this disease include fever, dry cough, and tiredness. We can safeguard ourselves from this virus by practicing good hygiene and taking extra precautions, such as washing our hands, avoiding sick people, wearing a mask, and wearing gloves. Foods that boost our immunity are citrus fruits, broccoli, and garlic.
A photopsin is a protein
A. of a photopigment within cone photoreceptors.
B. of a photopigment within rod photoreceptors.
C. that is derived from Vitamin E.
D. that allows ions to flow into rod and cone photoreceptors
Answer:
A
Explanation:
protein pigment for vision in cone
Describe possible Co-dominance in a unicorn
Answer:
The unicorn has spots.
Explanation:
This shows codominance becuase the to colors are both shown
Which of these is the most likely reason why the Steady State Theory of origin of the universe has been rejected? (3 points)
Answer:
The options are
it was too old to be used in modern times
it was too complicated for scientists to understand
scientists found new evidence to prove it invalid
scientists discovered a shorter theory to replace it
The answer is scientists found new evidence to prove it invalid
Steady State Theory of origin of the universe has been rejected due to new findings about how the universe was formed through carefully observing it which faulted past theories. This validates the option which states that scientists found new evidence to prove it invalid.
Messages sent by the brain to the endocrine system pass
O A. from neuroendocrine cells to glands via action potentials
O B. from neurons to neuroendocrine cells via neurotransmitters
O C. from neurons to neuroendocrine cells via action potentials
O D. from neuroendocrine cells to neurons via hormones
O C. from neurons to neuroendocrine cells via action potentials
Answer:
from neurons to neuroendocrine cells via neurotransmitters.
Explanation:
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im playin
but nah fr doe
Which of the following energy sources causes the most pollution? A. coal B. biomass C. neutrons D. geothermal
Answer:
A. Coal
Explanation:
The other forms listed are "clean" energy sources.