In some types of research the target population might be as broad as all humans, but in other types of research the target population might be a smaller group such as teenagers, pre-school children or people who misuse drugs.
It is more or less impossible to study every single person in a target population so psychologists select a sample or sub-group of the population that is likely to be representative of the target population we are interested in.
This is important because we want to generalize from the sample to target population. The more representative the sample, the more confident the researcher can be that the results can be generalized to the target population.
One of the problems that can occur when selecting a sample from a target population is sampling bias. Sampling bias refers to situations where the sample does not reflect the characteristics of the target population.
What element is in adenine that is not in
ribose?
Answer:
Nitrogen
Explanation:
Adenine is one of the four nitrogenous bases while Ribose is one of the two sugars (carbohydrates) that make up a nucleotide. Adenine is structurally composed of 5 carbon atoms, 5 hydrogen atoms and 5 nitrogen atoms to form the chemical formula C5H5N5 whereas ribose is structurally composed of five carbon atoms, ten hydrogen atoms, and five oxygen atoms to form the chemical formula; C5H10O5.
Based on the above explanation, it is evident that the element present in Adenine but not in Ribose is NITROGEN. Nitrogen is a major constituent of all nitrogenous bases (Adenine, Guanine, Cytosine and Thymine (Uracil).
What determines the type of animals that live in a biome? *
1 Soil and Rocks
2 The plant life
3 Latitude and altitude
4 None of these
Answer:
Plant Life
Explanation:
Due to the fact that prey outnumbers predators in all biomes, plant life is critical. Most prey are herbivores and this would contribute to the essential need for plant life. When it comes to predators, who are almost all carnivores, they may not need the plant life for food, but instead for shelter, hiding, and raising offspring.
Hope this helps :)
why might someone want to have smoke in the air at a laser show
Answer:
Someone wants to have smoke in the air at a laser show because It's the dust particles or mist droplets which reflect the light of the laser. When you see a laser beam, what you are seeing is the beam being scattered by various small particles suspended in the air. ... When people want to show off laser beams, they often add smoke or equivalent to the air.
Answer:
This is such a werid question to ask :/
Explanation:
intimate give an example of a situation
What is number 30 please
Answer:
The answer is D
Explanation:
hope this helps
Two Aa parents have children with Aa genotype and one child with the aa genotype. If these parents have a fourth child, what is the probability that the fourth child will have the AA genotype
Answer:
25%
it is like flipping a coin
regardless of how many times it comes out heads
tails is still 50%
the punnett square ouitside is Aa on top and bottom
inside is
AA Aa
Aa aa
Explanation:
Which best desctibes the fossil record?
Answer:
The perserved remains of an organism.
can someone please help me
Answer:
1 and 3
Explanation:
1 is a drug
3 is a formula
ANSWER FAST PLEASE!
1. The function of the mitochondria in cell is to...
A) contain all the information the cell needs to function
B) provide movement
C) turn food into an energy the cell can use
D) make energy rich food from sunlight
2. What is the main component of a plant cell wall?
A) galactose
B) glucose
C) cellulose
D) sunrise
3. What are the small structures found inside a cell that have specific functions that halo the cell survive called ?
A) homeostasis
B) organelles
C) tissues
D) organs
Answer:
1. C -make food into energy
2. C - cellulose
3. B - organelles
What would be the best explanation why Group 3's measurements
were so different from the rest of the groups?
Select one:
a. The balance that Group 3 used appears to be measuring
incorrectly.
O b. Group 3 had different samples than the other groups.
O c. The other groups made mistakes in measuring the mass.
O d. Group 3 does not know how to measure mass.
Answer:
The balance that Group 3 used appears to be measuring incorrectly.
Explanation:
An organism is a living thing that obtains food, water,
shelter and other things it needs to live, grow and
reproduce from its environment
True
False
Which statement is true about all adaptations?
O A. They can be lost.
B. They enhance survival.
C. They are learned.
O D. They reduce reproduction.
Answer:
Its B!
Explanation:
Lets say a brown bunny who usally lives in the forest, has to move to the artic. The bunny would adapt by turning its skin white, to keep it warm from the cold and to blend in from predators. This enhances the bunnys survival in the artic!
Hope this helped!
The Krebs cycle and electron transport are aerobic process because they require
Answer:
Oxygen
Explanation:
What are the limitations on natural selection?
Answer:
Limits to variation The most obvious limit to natural selection is that suitable variation may not be available. This may be because certain phenotypes cannot be built, being ruled out either by physical law or by the properties of biological materials.
I hope it's helpful!
compare and contrast protists and parasites
A police officer pulls over a driver for speeding. She notices that the driver seems very jumpy and is breathing heavily as though his heart was racing. She suspects that the driver may be on drugs. Explain what category of drugs this driver likely took. Justify your answer.
Answer:
He would be like moving weirdly and acting not how he usually does.
Explanation:
yah
In addition to Earth, which planet has evidence of water on the surface?
O Mars
O Mercury
O Neptune
O Saturn
answer:
mars
explanation:
this is why scientists expect to find life on mars or even for humans to live thereAnswer:
Mars!
Explanation:
That's the reason why scientists would most likely to find sources of life on mars. Or maybe there's enough water for humans to live there.
Why is there so much oil in the Middle East? Select the best answer from the choices below.
a
Over millions of years, tectonic plates shifted, trapping oil in pockets in the basins of the Persian Gulf
b
The Middle East is wealthy enough to have the equipment needed to drill for it
c
It is more convenient to drill for in the Middle East
d
The high temperatures cause organic matter to break down and form fossil fuels more quickly
Answer:
A
Explanation:
Explain at least three ways in which a mutation in an individual's DNA could occur, and describe at least 2 effects a mutation could have on an individual's traits.
E. Coli is a bacterium that lives in the gut of humans. The human provides the ideal habitat for e coli reproduction and the e coli provides the extra vitamin K that we use.
Group of answer choices
Parasitism
Predation (Predator-Prey)
Mutualism
Commensalism
Answer:
The correct answer is - Mutualism.
Explanation:
E. coli and humans have a parasitic relationship as these organisms cause harm to the Humans while they reproduce themself, however, E. coli also have a mutualistic relationship with humans that are present in the gut of the human's digestive tracts.
These bacteria help in providing vitamin k and nutrients to humans that is essential for the clotting of blood and the human provides the ideal habitat for E. coli reproduction.
during the nitrogen cycle?
ammonia is turned into sugar?
atmospheric nitrogen is converted to fixed nitrogen?
nitrogen is converted to oxygen and sugar?
oxygen and sugar are converted to nitrogen?
Answer:
none of the above
Explanation:
OMARK FOR REVIEW
Question 11 of
11. Which foodborne illness is most often caused by incorrectly canned food?
O Listeriosis
O Yersiniosis
O Botulism
O Shigellosis
Answer:
Botulism
Explanation:
give two reasons why it is important to conserve south Africa's plants and animals
Answer:
it creates opportunities and benefits for local communitys and it can maintain the health if an ecosystem. I think those are the two I may be wrong sorry if I am
Medium mass stars like our own sun tend to been seen in the yellow portion of the
Spectrum . Older stars that have burned much of their hydrogen fuel may appear red
general color. Blue stars are often very young stars, relatively speaking, and burn-
A:very hot
B:very cool
C:at temperatures similar to our sun
D:Blue stars are supernovae.
Answer:
A
Explanation:
They burn very hot
What is the idea of devotion and loyalty to a country called that Africans
would use to gain their independence from England? *
A Independence
B Imperialism
C Nationalism
D Apartheid
easiest way to memorize the structures of viruses and bacteria
Answer:
I recommend trying to photo memory it, if not repeat it in your head to the point where its the only thing you're thinking about.
Explanation:
It works for me :))
Answer: Quizlet
Explanation: Helps me study when taking tests, maybe works for you too.
In order to determine the expected average offspring length, what do you multiply with your heritability
Complete question:
In a population of toads, the average body length is 30mm. Body length is variable and the narrow sense heritability for body length is 0.1 for this population. You cross a male of 20mm with a female of 22mm. In order to determine the expected average offspring length, what do you multiply with your heritability?
30mm 9mm 0.1 8mm -9mm -0,5Answer:
The correct option is -9mm
In order to know the expected average offspring length, OABL, we need to multiply the selection differential, SD ( -9mm) with narrow-sense heritability, h² (0.1).
Explanation:
Available data:
the average body length, ABL, is 30mmthe narrow-sense heritability, h², for body length is 0.1male of 20mmfemale of 22mmTo answer this question, we need to remember how can we calculate the selection differential and the heritability in the narrow sense.
We can get the selection differential, SD, by getting the difference between the mean value of a population length, ABL, and the mean value of the parents of the next generation, PABL. So, in this example the selection differential is:SD = (20mm + 22mm)/2 - 30mm
SD = 21 mm - 30mm
SD = - 9mm
The heritability in the narrow sense, h², for body length in the population ish² = body lengths of the offspring average/selection differential
But we already know the value of h². And we want to know the body length of the offspring. So we just need to clear the following equation.
OABL = ABDL + h² ( PABL - ABL)
where,
offspring average body lengths = OABLpopulation average body length = ABL = 30mmparents average body length = PABL = 22mmSelection diferential = SD = -9mmnarrow sense heritability = h² = 0.1OABL = ABDL + h² ( PABL - ABL)
OABL = ABDL + h² ( SD)
OABL = 30mm + 0.1 ( -9mm)
OABL = 30mm + (-0.9 mm)
OABL = 21 mm
In order to know the expected average offspring length, OABL, we need to multiply the selection differential, SD ( -9mm) with narrow-sense heritability, h² (0.1).
difference between the sea anemone and hydra
Answer:
Hydras live in fresh water environments, while sea anemones live in MARINE environments! Hydra, although primarily sessile (sedentary), may move up to several inches in a day.
how does gene regulation relate to the continuity of life
What pea color will the offspring have?
A) 2 green, 2 yellow
B)1 green, 3 yellow
C) all yellow
D)all green
Answer:
C.) all yellow
Explanation:
because it's the dominant trait to be inherited