Answer:
There are two differences that distinguish DNA from RNA: (a) RNA contains the sugar ribose, while DNA contains the slightly different sugar deoxyribose (a type of ribose that lacks one oxygen atom), and (b) RNA has the nucleobase uracil while DNA contains thymine.
Explanation:
Several human populations spread throughout the Sahara desert have multiple mutations in Gene R that confers heat tolerance. Independently, a small population of humans in the Mojave desert of California have a unique mutation in Gene Z that also confers heat tolerance. The evolution of adaptation of heat tolerance across all of these populations would be considered an example of _________
Answer:
Variation
Explanation:
Migration into a population from other populations with varying gene frequencies, evolution, or adaptation of heat tolerance is a cause of variation. The allele frequency of the resulting hybrid population would be right in the middle of its original value and the donor population's frequency. In tropical and subtropical ecosystems (Sahara deserts), high temperatures are a significant restriction to human population productivity; they induce morphological and physiological modifications at all times, resulting in significant yield losses but the ability and evolution of human species to cope in this region is as a result of variation.
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ᴀʜᴀʜᴀʜᴀʜᴀʜᴀʜᴀʜ
Answer:
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Explanation:
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how should a detective work with forensic scientists in order to solve a crime?
1 First Steps: Observation and Data Collection. As a criminal investigator, you should begin by making observations. ...
2 Create Your Hypothesis. ...
3 Test the Hypothesis. ...
4 Interpret Results and Form Conclusion. ...
5 Crime Investigation Tips.
In what two ways are warm air and cool air different and how does this affect pressure and cause wind?
based on the living things in the pyramid, tell me what examples would fit into these categories: primary producers, primary consumers, secondary consumers, and tertiary consumers
Answer:
- Oak trees: primary producers
- Caterpillars: primary consumers
- Blue Jays: secondary consumers
- Hawks: tertiary consumers
Explanation:
A trophic pyramid, also known as ecological pyramid or energy pyramid, is a graphic representation that shows the relationships between different types of organisms (i.e., producers and consumers) at the trophic levels of an ecosystem. The primary producers are autotrophic organisms that obtain energy from sunlight and chemical compounds from nonliving sources (e.g., photosynthetic plants, algae, etc). The primary consumers are organisms that eat primary producers (e.g., herbivores), while secondary consumers are organisms that eat primary consumers (e.g., omnivores). Moreover, tertiary consumers are predators and/or omnivores that eat secondary consumers (e.g., hawks). Finally, decomposers (e.g., bacteria) are organisms that obtain nutrients and energy by breaking down dead organic material (i.e., dead organisms) at all trophic levels into nutrients.
why does secondary consumers cannot digest the bones of their prey
Answer:
The conclusion to be drawn from the fact that secondary consumers do not digest the bones of their prey is that energy used to create bone mass often does not travel farther up the food chain . Explanation: ... No energy is required to form bones .
Explanation:
Answer:hebivore
Explanation:
True or false Question #1 Aspen has just learned HPV. (the human papillomavirus),
which can cause genital warts and cancer is so common most seually-
active people get at least one type of HPV during their lives. Aspen is
cared about HPV and has discovered there is a vaccine for this virus.
Aspen can go to a healthcare provider to get the vaccine but has to go
back for a second dose later.
Answer:
True
Explanation: One version of the human papillomavirus, which leads to most cases of cervical cancer, evolved in humans as a result of sex with Neanderthal, a new study shows
Which region would likely have the greatest amount of biodiversity?
A.
a mountainous region with two ecosystems, each of which supports a few different species
B.
a cave region with one ecosystem, which supports small populations of many different species
C.
a coastal region with three ecosystems, each of which supports many different species
D.
a grassland region with one ecosystem, which supports very large populations of a few different species
Answer:
C: a coastal region with three ecosystems, each of which supports many different species
Explanation:
Biodiversity means the variety of life in the world or in a particular habitat or ecosystem. So, a costal region with three ecosystem and each has many species would be a biodiversity.
PLZ HURRY ITS A TIME LIMIT
What part of the ice cores tells us what the atmosphere was like in the past?
A.The water when the ice cores melt.
B. The ice crystals.
C. The rings of the ice core.
D.The air bubbles trapped in the ice cores.
Answer:
C
Explanation:
I took the test a few days ago. :)
What changes as a front passes?
Answer:
When a front passes over an area, it means a change in the weather. Many fronts cause weather events such as rain, thunderstorms, gusty winds, and tornadoes. At a cold front, there may be dramatic thunderstorms. At a warm front, there may be low stratus clouds.
Answer:
It means that a change in the weather. Front passes can cause thunderstorms, tornadoes, rain, and breezy winds.
Explanation:
How can different groups of Protista be defined ?
Answer:
Explanation:
Protists can be grouped according to similarities in a number of different categories including nutrition acquisition, mobility, and reproduction. Examples of protists include algae, amoebas, euglena, plasmodium, and slime molds. Protists that are capable of photosynthesis include various types of algae, diatoms, dinoflagellates, and euglena.
Scientists interested in the relationship among vision, foraging for food, and fitness studied three isolated populations of a small species of primate whose diet includes small insects and fruit, both of which the animals primarily identify by sight. The three populations were once part of a larger population that was fragmented as a result of habitat destruction by humans. The study populations were selected on the basis of the significantly different vegetation among their current habitats. The scientists analyzed the frequency in each population of each of three alleles of a gene encoding an opsin protein. Opsin proteins are important for color vision, and each allele provides maximum sensitivity to a specific wavelength of visible light and thus to certain colors. Analysis of the alleles present in each population was performed in two different ways, and the data were combined to calculate the frequencies (Table 1).
Table 1. Frequency of opsin alleles in three populations of a small primate
Frequency (±2SEx¯)
Population 1 Population 2 Population 3
Allele 1 0.60 (.05) 0.80 (.06) 0.25 (.02)
Allele 2 0.15 (.02) 0.05 (.01) 0.45 (.03)
Allele 3 0.25 (.02) 0.15 (.02) 0.30 (.02)
(a) Describe one measure of evolutionary fitness.
(b) Using the template, construct an appropriately labeled graph to represent the data in Table 1. Based on the data, determine whether there is a significant difference in the frequency of EACH allele among the three primate populations.
Question 3
(c) Based on the data, identify the population that is likely to have the highest frequency of heterozygotes. Assuming random mating, calculate the frequency of animals in population 1 that carry both alleles 1 and 3.
Question 4
(d) A sudden event drastically changes the habitat of each population such that most of the normal vegetation and insects are replaced by other vegetation and insects. One of the scientists claims that population 2 will be the most severely affected. Predict the most likely effect of the event on population 2. Provide reasoning to justify your prediction.
a) Evolutionary fitness can be characterized as a person's commitment to the cutting edge's quality pool,which is chiefly founded on the aggregate or the genotype of the individual.This principally identifies with the conceptive achievement of an organic entity.
It is fundamentally determined by the offspring that can endure and pass on the characteristics/traits.
b) Graph is already uploaded in the below attached document.
c) The population 3 will have the most elevated frequency of heterozygotes,45% of the complete population.
d) Since population 2 is as of now having a low number of heterozygotes, the occasion would totally eliminate them from the population or decreases their number
Explanation:
Frequency of animals in population 1 having both alleles 1 and 3
frequency of allele 1 =0.60
frequency of allele 3= 0.25
Frequency of both allele 1 and 3 would be allele 1 + allele 3 frequency x 100
= 0.60+0.25 X 100= 85%
A high intrinsic growth rate would most likely be characteristics of
Answer:
r-selected species (e.g., American bullfrog)
Explanation:
The r-selected species (r-strategists) are those species in which their populations oscillate near the carrying capacity, i.e., the maximum population size sustained by a particular environment. These species are generally located in low-quality (less competitive) ecological niches and produce many offsprings that grow rapidly and have low chances of surviving to adulthood. Some examples of r-strategists include amphibians, fish, small mammals, etc. Conversely, K-selected species have more stable populations and produce a low amount of offspring (e.g., large mammals such as elephants).
HELP ASAP WITH THE LAST QUESTION NO LINKS PLS
Answer:
physical change should be the answer
As a result of your Zombie Apocalypse, the grass at a local park will no longer be mowed. What type of succession is this (primary or secondary)? Describe the stages of succession that will occur in the next 100 years.
Answer:
Halloween es ese día que apenas hace unos años ni siquiera celebrábamos en España. El día de los muertos, de los monstruos y el truco o trato. Por si eres de aquéllos a los que les parece una noche inquietante, aquí estamos en Estamos Seguros para garantizarte un sueño reparador.
Si te andas preguntando si un apocalipsis zombie es posible, la respuesta es sí, pero puedes estar tranquilo: el Apocalipsis Zombie en la noche de mañana es altamente improbable. De hecho, su probabilidad es apenas del 0,00014%.
Otras veces te hemos explicado en Estamos Seguros que una prima de seguro es el resultado de multiplicar la probabilidad del percance asegurado por el capital asegurado, esto es, lo que el asegurador deberá pagar si se produce. Esto quiere decir, lógicamente, que si se conoce el capital asegurado y la prima, se puede derivar la probabilidad. Asumiendo que un posible Apocalipsis Zombie acabaría con la raza humana (o, por lo menos, con la que está asegurada), puede asumirse que un hecho así equivale a una situación tal que obligaría a las aseguradoras a indemnizar todos los capitales que tienen asegurados sobre las personas.
The forces between ________ are examples of electric forces.
A.
charged particles
B.
neutrons
C.
masses
D.
photons
Answer:
b neutrons are eg of electric force
What similarities do you observe about the rock formations of the Grand Canyon and Waimea Canyon?
The similarity between the Grand Canyon and Waimea Canyon is that both of them were formed about six million years ago.
What is a rock formation?The term rock refers to the solid mass which could be found above or below the earth crust which serves as a large repository of minerals.
The similarity between the Grand Canyon and Waimea Canyon is that both of them were formed about six million years ago.
Learn more about rock:https://brainly.com/question/1851822
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Has a basic side chain
Answer:
There are three amino acids that have basic side chains at neutral pH. These are arginine (Arg), lysine (Lys), and histidine (His). Their side chains contain nitrogen and resemble ammonia, which is a base. Their pKa's are high enough that they tend to bind protons, gaining a positive charge in the process.
Explanation:
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The lower chambers of the heart are the
septum
ventricles
atrium
pacemakers
Answer:
The correct answer is - ventricles
Explanation:
A normal human heart has four chambers, two upper and two lower chambers. The upper chambers, known as the right atria and left atria that get incoming blood into the heart.
The lower chambers knowns as right ventricles and left ventricles that push the blood out of your heart to the rest of the body. Ventricles receive the blood from the atrium and pump or expel the blood to the rest of the body.
Thus, the correct answer is - ventricles.
Genetic Variation and Evolution Quick Check
In which of the following scenarios would evolution by natural selection take place? (1 point)
O A banana tree branch is planted, producing a clone of the parent tree
O Corn is genetically modified and cloned to make identical crops
O Microorganisms reproduce asexually, producing identical offspring
O Penguins reproduce sexually, producing offspring that look different from one another
Answer:
Penguins reproduce sexually, producing offspring that look different from one another
Explanation:
The evolution by natural selection take place in Penguins reproduce , producing offspring that look different from one another.
Penguins , suggesting that they have been witnessing herbal choice taking location over the path of generations over the years.
What is natural selection ?Natural selection is the system via which species adapt to their environments. It is the engine that drives evolution.
Thus it is well explained.
To learn more about the offspring refer to link :
https://brainly.com/question/471576
What is the greenhouse effect? How can humans reduce the level of greenhouse gases?
Answer:
The greenhouse effect is the production of harmful gases that harm the atmosphere.
Humans can reduce the level of greenhouse gases by opting for alternate technologies or reducing their carbon emissions.
Explanation:
The greenhouse effect is the process of heating the earth's atmosphere by trapping the Sun's energy, thereby making the atmosphere hot. This natural process of trapping the heat is caused by numerous gases like methane, carbon dioxide, water vapor, and other gases. It's from this process that the atmosphere produces bad gases that damage the earth.
The reduction of the effect can be reduced by humans if they reduce their consumption of resources or energy. Moreover, shifting to alternate technologies that use lesser or no gasoline will also help in the reduction of greenhouse gases.
Scientists use computer models to study complicated events and to
a. perform experiments
b. state theories
c. change theories and laws
d. make predictions
Answer:
The correct answer is - d. make predictions.
Explanation:
Computer models are scientific models that help in analyzing complex systems. Scientists use these to analyze data and on the basis of these data computer models are able to predict the outcome of the problem or can tell what will happen in the future.
These are very helpful in complex systems and are made on the basis of the data collected and are the basis of the models. Weather forecast can be predicted on the provided data.
What evidence BEST supports the presence of atmospheric oxygen 2.7 billion years ago?
a. carbon 14 in plants
b. fossils found in stomatolites
c. layered iron rust in rocks
Answer:c
Explanation:layered iron rust in rocks
What are the difference between transfusion and infusion ?
Answer:
Infusions essentially refer to when an outside substance is administered directly into the bloodstream, while transfusions refer to when the same substance, just from an outside source, is administered in the same manner.
Explanation:
The semester final for Mr. Garcia's science class required students to design and conduct an investigation that would answer the question "Is
styrofoam a better insulator than plastic?"
Which experiment would be most effective in helping students obtain evidence to use in answering this question?
100 mL of 70 °C water placed in 200 mL plastic cup
O A. 100 mL of 10 °C water placed in 250 mL plastic cup
wait 20 minutes, remeasure temperatures
50 mL of 70 °C water placed in 250 mL styrofoam cup
OB. 100 mL of 70 °C water placed in 250 mL plastic cup
wait 20 minutes, remeasure temperatures
100 mL of 70 °C water placed in 200 mL plastic cup
OC. 100 mL of 70°C water placed in 200 mL styrofoam cup
wait 20 minutes, remeasure temperatures
100 mL of 70°C water placed in 250 mL styrofoam cup
OD. 100 mL of 20 °C water placed in 200 mL styrofoam cup
wait 20 minutes, remeasure temperatures
100 mL of 70 °C water placed in 200 mL plastic cup
O E. 100 mL of 70 °C water placed in 250 mL styrofoam cup
wait 20 minutes, remeasure temperatures
Answer:
C
Explanation:
The correct answer is C because it puts equivalent measurements in the equivalent cup size. Both cups in answer C are the same measurement: 200 mL. The water in both cups is also the same measurement: 100 mL of 70 degrees Celsius. This is important because equivalent measurements for everything mean the experiment will be fair, equal, and accurate. If the measurements were not equal to each other, your experiment would not be as accurate.
PLS HELPPPPPPPPPPPP WITH THIS QUESTIONN;-)
Answer:
D
carbon monoxide and nitrogen oxide
Answer:
d
Explanation:
HELP
Youngest to oldest
Answer:
E B I F H A D G C
Explanation:
An experiment similar to the 1952 Hershey and Chase experiments was done in which radioisotope 35S was added to a bacteriophage replicating within its bacterial host. The new phage particles were carefully isolated and used to infect fresh bacterial cells and no radioisotopes were utilized. Based on this information, where would you expect to find the 35S radioisotope immediately after infection
Answer:
inside the phage ghosts outside the bacterial cells.
Explanation:
According to Hershey & Chase- Experiments, the radioisotope 35S is frequently associated with protein since sulfur is a protein component. The radioactive sulfur is absorbed into the protein coat because it already contained sulfur (35S). The radioactive marker 35S was integrated into the Bacteriophage protein coat and remained as phage ghosts outside the bacterial cells.
(20 POINTS!!) Respiration is a process where many chemical bonds inside the body break and release energy. This energy is used to perform various activities such as moving muscles. Explain the energy transformation in this process.
A. Chemical energy from broken bonds is transformed into mechanical energy for muscles.
B. Mechanical energy from broken bonds is transformed into chemical energy for muscles.
C. Mechanical energy from broken bonds is transformed into electrical energy for muscles.
D. Heat energy from broken bonds is transformed into electrical energy for muscles.
Answer:Cellular respiration is the process of transforming chemical energy into forms usable by the cell or organism. Organisms ingest organic molecules like the carbohydrate glucose to obtain the energy needed for cellular functions. The energy in glucose can be extracted in a series of chemical reactions known as cellular respiration. Most energy is produced during cellular respiration in the mitochondria, a process that involves breakdown of simple sugars to produce energy in the form of ATP, which is the usable form by the cell.
Explanation: