Observing Animals (Image Attached)
Let’s study and compare three animals: a frog, an ancient and extinct mammal-like animal, and an owl. Observe the illustrations, and then answer the questions.
1. How are the bodies of the three animals similar to one another? How are they different?
2. What might these similarities suggest about the common ancestor of these organisms?
Answer: They each have patches on their stomachs. Also, all 3 animals have claws or legs, even though they play different function in each organism, they 3 still share the same characteristics of having claws or legs.
Explanation:
I am also trying to understand the 2nd question, but this is the answer to the 1st one.
Species X and species Y are living animal species that have many similar physical characteristics. These characteristics suggest the species are closely related.
Which of the following would be the best evidence that species X and species Y have a common ancestor?
A.
A fossil of a different species is found that has some of the characteristics shared by species X and species Y.
B.
A fossil of a different species is found that has none of the characteristics shared by species X and species Y.
C.
A third living species is found that has none of the characteristics shared by species X and species Y.
D.
A third living species is found that has some of the characteristics shared by species X and species Y.
D, not pretty sure. ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ
Producers NEED the following raw materials to create food for themselves (check all that apply)
1 glucose
2 soil
3 water
4 sunlight
5 oxygen
6 carbon dioxide
Answer: Water, Sunlight, Carbon Dioxide, and oxygen
Explanation: Hope this helps
Why do birds migrate south during the winter?
A. strong northern winds drive them south
O B. an increase in predators drives them south
O C. to find food
O D. to find better nest building materials
Answer:
C. to find food.
Explanation:
It is hard to find food in the winter for animals besides humans. So they need to head south for warmer climates.
Offspring of certain fruit flies may have yellow or ebony bodies and normal wings or short wings. Genetic theory predicts that these traits will appear in the ratio 9:3:3:1 (9 yellow, normal: 3 yellow, short: 3 ebony, normal: 1 ebony, short). A researcher checks 100 randomly selected fruit flies and finds the distribution of the traits to be 59, 20, 11, and 10, respectively. Are the results this researcher observed consistent with the theoretical distribution predicted by the genetic model
Answer:
Yes, the observed results are consistent with the theoretical distribution predicted by the genetic model. The population is in equilibrium.
Explanation:
Available data:
Offspring of fruit flies may have yellow or ebony bodies and normal wings or short wings.Expected phenotypic ratio 9:3:3:19 yellow, normal: 3 yellow, short: 3 ebony, normal: 1 ebony, shortSample size , N = 100Phenotypic distribution 59:20:11:10To know if these results are consistent with the expected ones, we need to develop a chi-square analysis. To do it we need the following information
Chi square= ∑ ((Obs-Exp)²/Exp)- ∑ is the sum of the terms
- Obs are the Observed individuals
- Exp are the Expected individuals
Freedom degrees = K – 1- K =genotypes number = 4
Significance level, 5% = 0.05 Table value = Critical value
First, define the hypothesis:
Hypothesis: The allele of this population will assort independently. The population is in equilibrium
H₀= Individuals will be equally distributed.
H₁ = Individuals will not be equally distributed.
Second, we need to get the expected number of individuals with each phenotype. To do it, we will use the expected phenotypic ratio and the total number of individuals in the sample. We can just perform a three simple rule, as follows:
16 ------------------------------------ 100 individuals in the sample ------- 100%
9 yellow, normal ---------------- X = 56.25 individuals -------------------56.25%
3 yellow, short ------------------- X = 18.75 individuals --------------------18.75%
3 ebony, normal -----------------X = 18.75 individuals ---------------------18.75%
1 ebony, short ---------------------X = 6.25 individuals ----------------------6.25%
Now that we know the expected numbers of individuals with each genotype, we can compare them with the observed ones.
yellow, normal yellow, short ebony, normal ebony, short
Expected 56.25 18.75 18.75 6.25
Observed 59 20 11 10
The chi-square value = Σ(Obs-Exp)²/Exp.
So now we need to calculate (Obs-Exp)²/Exp
yellow, normal(Obs-Exp)²/Exp = (59-56.25)²/56.25 = 0.134
yellow, short(Obs-Exp)²/Exp = (20 - 18.75)²/18.75 = 0.083
ebony, normal(Obs-Exp)²/Exp = (11 - 18.75 )²/18.75 = 3.203
ebony, short(Obs-Exp)²/Exp = (10 - 6.25)²/6.25 = 2.25
X² = Σ(Obs-Exp)²/Exp = 0.134 + 0.083 + 3.203 + 2.25 = 5.67
X² = 5.67Significance level = 0.05Degrees of freedom = genotypes number - one = 4 - 1 = 3Critical value or table value = 9.348P₀.₀₅ > X2
9.348 > 5.67
There is not enough evidence to reject the null hypothesis. The genotypes might be in equilibrium, and there might be an independent assortment.
All living things contain biomass. Which element is the most important when creating
biomass?
a.Carbon
b.Nitrogen
c.Oxygen
Answer:
Carbon is the most important.
Explanation:
It's the main component
Examine the image that shows the folds in the lining of the small intestine.
Which of the statements best describes the interaction between the small intestine and another organ based on the model shown
here?
A)
The large number of extensions allows the small intestine to filter wastes
before they are absorbed by the kidneys and liver.
B)
The large indentation in the small intestine lining allows for the storage of
food molecules before they are processed by the liver.
The increased surface area to volume ratio of the small intestine allows for
the absorption of materials into the bloodstream more efficiently.
The increased number of cells in the lining of the small intestine allows
the absorption of materials into the large interesting more efficiently.
D)
Answer:
D?
Explanation:
I took this test on Testprep but I am not sure that is the answer but I wish good luck to you
Answer: It is C.) The increased surface area to volume ratio of the small intestine allows for
the absorption of materials into the bloodstream more efficiently.
Explanation: Microvilli increases surface area of the cells
How does sexual reproduction reduces the risk of genetic disease?
An eastern screech owl, a carnivore, might compete with which organism most intensely for resources?
A. hawk (secondary consumer)
B. mountain lion (secondary consumer)
C. wren (primary consumer)
D. mouse (primary consumer)
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What are some actions you can take to reduce your carbon footprint?
Answer: learn the 5 R's: refuse, reduce, reuse, rot, recycle: Going zero waste is a great step towards combating climate change. ...
bike more and drive less: ...
conserve water and protect our waterways: ...
eat seasonally, locally, and more plants: ...
switch to sustainable, clean energy: Individuals and corporations can reduce their respective carbon footprints by installing energy-efficient lighting, adding insulation in buildings, or using renewable energy sources to generate the electricity they require. For example, electricity generation from wind power produces no direct carbon emissions.
Explanation:
The amount of nutrients present in a trophic level is called living state
The amount of carbon is present in the earth which is used to transfer from one component to another is called carbon footprint.
On earth, the emission of carbon is a major issue and we have to resolve it as soon as possible.
These are the following ways to reduce the carbon footprint:-
Stop deforestationReduce hunting.Planting more trees.Minimize the use of automobiles.Hence, the answer is mentioned is above.
For more information, refer to the link:-
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A galaxy has less mass than a moon and more mass than a planet.
True
False
Answer:
False, major false. A galaxy is a small portion of the entire universe... it contains plants, stars, asteroids, moons are insignificant compared to it. Also, pretty much all moons are larger than planets so that wouldn't even make sense.
Answer:
FALSEExplanation:
First off a galaxy is one of the largest things in space, besides things like galaxy clusters.
Second all planets have more mass than the moon. Since planets have more mass than a moon, it is impossible to have less mass than a moon but more than a planet.
Finally, a galaxy is made up of millions of planets and moons. So it does not make any sense nor is it even possible.
What kind of information can scientist get from soft body parts that they cannot get from hard body parts?
Answer:
Function and working mechanism.
Explanation:
Information such as function and working mechanism etc can a scientist get from soft body parts that they cannot get from hard body parts because these soft body parts perform their work continuously and we can study it through a number of ways and methods. The working mechanisms of hard body parts can't be study because they are not visible to any instrument and occurs inside their structure so that's why function and working mechanism are the information given by the soft body parts.
If mutated DNA sequence #1 occurred in a single reproductive cell of a fish that was later fertilized to become an offspring, how might it impact the organism
Answer:
Offspring will have some sort of genetic variation from parent (may be positive or negative or no effect, based on the mutation type)
Explanation:
The reproductive cells pass on the traits from the parents to the offspring.
An organism that is mutated at a single DNA location in a reproductive cell, then that mutation will be passed on to the offspring.
Based on fact, that mutation will lead to some kind of effect in any trait, hence the same trait will be effected because of mutation in the offspring as well
It can also be said that offspring will have some sort of variation from parent (may be positive or negative or no effect, based on the mutation type)
Five general characteristics of organisms in kingdoms Plantae or Fungi are listed in the box. Which table correctly lists the characteristics of the organisms in the two kingdoms?
Answer:
B
Explanation:
C table correctly lists the characteristics of the organisms in the two kingdoms. So, the correct option is C.
What is Five kingdom classification?The system of biological kingdoms is the way in which science classifies living things in order of evolution according to their ancestors which means all species that make up these five large groups. Some recent theories divide them further into six or seven showing the common ancestors and sharing some of their genes which belong to the same family tree.
Along with the kingdoms of living things, there are other taxonomic categories within the same classification system, such as, for example, domain, kingdom, phylum, class, order, family, genus, and species.
Therefore, the correct option is C.
Learn more about Five kingdom classification, here:
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THIS IS EARTH SCIENCE
PLEADE ASNWER THE Two QUESTIONS IN THE PICTURE
How do ocean currents affect the coastal regions of S.America at 20 degrees south latitude
When a lake freezes over. How does the energy content of the lake change?
Answer:
Explanation:The remaining air (air that does not descend at 30 degrees North or South latitude) continues toward the poles and is known as the westerly winds, or westerlies
Natural selection is a very important part of evolution. Select all of the CORRECT statements below
about the theory of natural selection.
More individuals are produced than can survive
Natural selection favors the strongest and fastest individuals in a population
There is genetic variation in populations
Beneficial traits are passed on to future generations
Answer:
Natural selection favors the strongest and fastest individuals in a population
Beneficial traits are passed on to future generations
There is genetic variation in populations
Explanation:
I just did this last trimester in natural science.
What are some ways you think scientists can affect or utilize the genes of organisms?
Answer:
I'm not quite sure what your looking for
Explanation: scientists can take the genes of one successful crop, animal, etc, and insert that gene into future things so all offspring will be successful. This is called genetically modifying. Another thing scientists can utilize genes for is cloning. There have been ideals of the perfect human for many years and now scientists are trying to alter these genes to have perfect offspring according to your standards.
2. Describe the info flow of transcription. (A. DNA --> DNA / B. DNA -> RNA / C. RNA --> protein / D.
DNA --> protein)
3. Describe the info flow of translation. (A. DNA -> DNA / B. DNA -> RNA / C. RNA --> protein / D. DNA-
-> protein)
4. Describe the info flow of expression. (A. DNA --> DNA/B. DNA --> RNA / C. RNA --> protein / D. DNA
--> protein)
5. Describe the info flow of replication. (A. DNA --> DNA/B. DNA --> RNA / C. RNA --> protein / D. DNA-
-> protein)
Answer:
I think the dna is like in the butt but I really have no key to my hose
Explanation:
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Which of the following are important products of rainforests?
a.
timber
b.
pharmaceuticals
c.
oxygen
d.
all of the above
Please select the best answer from the choices provided
A
B
C
D
Answer:
D
Explanation:
All of the above options are important products of rainforests. Therefore, option (D) is correct.
Timber, or wood, is a valuable natural resource obtained from rainforests and is used for various purposes, including construction, furniture, and paper production.
Pharmaceutical products, or drugs, are derived from rainforest plants and have contributed to the development of many life-saving medicines. Oxygen is produced by rainforest vegetation through photosynthesis and is a crucial component of the Earth's atmosphere, supporting life for all organisms.
Learn more about rainforests, here:
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What does vain mean in the poem?
A.
sluggish
B.
shy
C.
boastful
D.
useless
Answer:
D. Useless
Explanation:
According to Dictionary.com, “in vain” is defined as “without real significance, value, or importance; baseless or worthless.”
Describe the functions and organization of tissue systems in a seed plant.
Answer:
tissues is the protect outer covering of plants
Explanation:
Plants consist of many different types of cells that are organized into aggregates called tissues. Tissues are derived from specialized groups of dividing cells called meristems. Meristems are the source of cells and tissues and therefore they are not strictly speaking tissues themselves
Plants are multicellular eukaryotes with organized tissue and specialized organs with specific tasks.
What are the functions and organization of the tissue system in a seed plant?Plants are multicellular eukaryotes, and their tissue systems are made up of many cell types that serve distinct purposes. Meristematic tissue and permanent (or non-meristematic) tissue are the two main forms of plant tissue systems. Meristems, which are areas of plants that experience continuous cell division and expansion, are where the meristematic tissue's cells may be located. Meristematic tissue cells continue to divide and support plant growth despite being either undifferentiated or incompletely differentiated. Permanent tissue is made up of dormant plant cells, which are no longer actively dividing.Secondary tissues can be simple (made up of similar cell types) or complex (composed of different cell types). Dermal tissue is a simple tissue that covers the plant's exterior and regulates gas exchange. One example of a complex tissue is vascular tissue, which is composed of the specialized conducting tissues xylem and phloem.To learn more about the functions and organization of the tissue system in a seed plant, refer to https://brainly.com/question/17774097
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give an example of something that might stop a cell from checking things during the cell cycle
Answer:
The death of nearby cells and the presence or absence of certain hormones can impact the cell cycle
Examples of how humans negatively affect local ecosystems are
A. Building dams, deforestation cutting down trees), adding point sources to nearby streams to allow for run-off, building roads and structures, and salting roads
B. Planting trees and other plants to attract native species
C. Creating laws to prohibit fishing from local streams
D. Removing non-native species from the environment.
Answer:
A. Building dams, deforestation cutting down trees), adding point sources to nearby streams to allow for run-off, building roads and structures, and salting roads.
Explanation:
Removing non-native species from the environment helps the native ants to thrive without having any changes in the ecosystem effect them (i.e. new invasive animal).
Creating laws to prohibit fishing from local streams helps keep the fish alive and allowing them to continue to use this stream.
Planting trees and other plants to attract native species helps secure and grow the ecosystem of that area.
This leaves A as the answer.
Hope that helps you!
A scientist conducted an experiment to determine how the amount of salt in a body of water affects the number of plants that can live in water. In this experiment the independent variable is The temperature of the water
Explanation is in a file
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WILL GIVE BRAINLIEST TO BEST ANSWER NO LINKS Select the correct answer.
In 2002, Colorado was suffering from extreme drought. Which technology will help Colorado reduce the effects of future droughts?
A.
building sea walls
B.
building levees
C.
building dams
D.
building storm shelters
Answer:
Building dams is the technology that will help Colorado reduce the effects of future droughts.
Explanation:
i dont know why people are putting links up insted of awnsers. Have a nice day :)
Answer:
C. Building dams
Explanation:
dams can store and reserve water for future use (resevoirs)
6. Parathyroid glands produce hormones that
are essential to the proper function of which
system?
A circulatory system
B digestive system
C respiratory system
D skeletal system
Answer:
D. skeletal system .... .
List earth's layers from hottest to coldest.
Answer:
inner core, outer core, mantle, crust
Explanation:
inner core is hottest
crust is coldest
Answer:
Inner core, outer core, mantle, crust!
What is the main difference between active transport and passive transport?
(A) During active transport the water inside the cell is used to transport substances throughout the cell. Passive transport uses the cell's cytoplasm to move substances around the cell.
(B) Passive transport moves substances throughout the cell without using the cell's energy and active transport moves substances using the cell's energy.
(C) Active transport moves substances from higher concentrations to lower concentrations and passive transport moves substances from lower concentrations to higher concentrations.
(D) Passive transport moves substances that are too large to get through the cell membrane by forming a vesicle inside the cell and active transport forms the vesicle on the outside of the cell.
Answer:
B
Explanation:
passive transport uses diffusion to transport while active transport uses some energy most commonly atp
All eukaryotic cells have a —
1:cell wall
2:flagellum
3:nucleus
4:chloroplast
help me its timed pleasee
Answer
neucleus
Explanation:
The region around a star where sunlight is strong enough to enable photosynthesis and keep water on the surface of a planet liquid is called what?
