Evolution Unit Test
Which of the following is the best definition of a homologous structure?
Similar structures in
same organisms.
Similar structures in different organisms who have a common ancestor.
О
Different structures in the same kind of organisms.
Two kinds of bones that can be found in multiple parts of the body.

Answers

Answer 1

Answer:

similar structures in same organisms


Related Questions

a haploid fungus, a transversion arises in the coding region of a gene necessary for the production of the amino acid leucine. The transversion substitutes the last base in the codon UAC (encoding cysteine), resulting in the stop codon UAG. This substitution will most likely cause;

Answers

Answer:

The correct answer is - the production of a truncated (shortened) protein.

Explanation:

In this question, it is given that there is a transversion type of substitute mutation that causes the change in the coding region of a gene. By this transversion, there is a substitute in the last base of the UAC code of gene that codes for leucine amino acid to a stop codon.

As stop codon comes before the actual stop codon in the gene leads to terminate the translation of mRNA to the amino acid chain that results in shortened or truncated protein.

Plants transfer water in the water cycle
A. through assimilation.
B. through ammonification.
C. through transpiration.
D. through fixation.

Answers

Answer:

c

Explanation:

transpiration my dude

Answer c you can remember the process by thinking of the root which it transfers “trans” and then take what word has transpiration.

naCI forms what when placed into water

Answers

Answer:

When salt is mixed with water, the salt dissolves because the covalent bonds of water are stronger than the ionic bonds in the salt molecules.

Explanation:

na+ plus cl- plus heat

salt stays the same but adds some heat

In your own words......

Part 1: Describe the mass and surface temperature of the main sequence stars.

Part 2: Explain using complete sentences where on the Hertzsprung-Russell (HR) diagram you would expect to find a main sequence star based on its physical properties.



This is the last question of my assignment.
The rest I did on my own already.
I just need help w this please. ASAP!
*** will mark BRAINLIEST if answer is correct ***​

Answers

Answer: Part 1: Mass of fundamental succession stars can be pretty much as low as one-10th of the mass of the sun and can be just about as high as 150 to multiple times the mass of the sun. The age of a star relies upon its mass. The temperature of a star is sufficiently high to intertwine the hydrogen inside them to frame a helium iota. Their temperature can be pretty much as high as 15-18 million kelvin.

Part 2: By a long shot the most unmistakable component is the primary arrangement (dim), which runs from the upper left (hot, glowing stars) to the base right (cool, faint stars) of the chart.

Explanation:

Explanation:

Part 1: Describe the mass and surface temperature of the main sequence stars.

Part 2: Explain using complete sentences where on the Hertzsprung-Russell (HR) diagram you would expect to find a main sequence star based on its physical properties.

is this que good

..

A group of researchers wants to determine the most effective antibiotic for killing the disease causing bacteria E. coli. They select 5 different antibiotics and determine how many cells were killed at the end of the experiment. The dependent variable in this experiment would be

Answers

Answer:

Number of cells killed at the end of the experiment

Explanation:

In research, the dependent variable is one whose value is dependent on another variable - a variable that is supplied by the researcher during the course of the experiment which is also known as the independent variable.

In this case, since the main objective of the research was to determine the most effective antibiotic against the E. coli, the variable that is supplied by the researcher (the independent variable) is, therefore, the different antibiotics while the variable whose value varies based on which of the antibiotics is introduced is the number of dead bacterial cells.

Therefore, the dependent variable is the number of cells killed by each antibiotic.

About how long did it take to grow the last 20 cells?

Answers

The rate of cell growth is increasing,its takes about 20 hours to grow 10 ells ,but it only takes 2-3 hr to grow the last 20 cellsExtend your thinking: In living organisms, the cell cycle is closely regulated.

PLEASE HELP ASAP!!!!
Which of earth's biomes has the least biodiversity?
grassland
coniferous forest
tundra
rainforest

Answers

Answer:

It's the tundra

Explanation: I say that because the tundra, which literally means "treeless plain," is the coldest biome. Extremely low temperatures, limited precipitation, a short growth season, minimal biodiversity, and nutrients in the form of decaying organic matter are all characteristics of tundra.

Which of the following species would have the greatest chance of going extinct?(1 point)

a species with a fast reproduction rate and lots of genetic variation living in a changing environment

a species with a fast reproduction rate and lots of genetic variation living in a stable environment

a species with a slow reproduction rate and very little genetic variation living in a changing environment

a species with a slow reproduction rate and very little genetic variation living in a stable environment

Answers

The species that would have the greatest chance of going extinct is the species with the slow reproduction rate and little genetic variation. Because they won’t reproduce as fast and then when they do reproduce they will be almost the exact same and will live in an environment that changes which would mean they would be able to change and adapt with it .

Extinction of the species refers to the death of the total species from the planet. The species with a slow reproduction rate and little hereditable variability habiting changing conditions will extinct first.

What factors influences the extinction rate?

Many biological factors affect the survival of the organism as they play the most crucial role in the life and death of the species. The organism's reproduction rate, genetic modification and variability affect the survival of the organism.

The species that have a high rate of reproduction and high genetic variation can survive and continue their lineage when the surrounding habitat or the environment is altered or modified as they have better traits and characters.

The species in a changing environment with slow reproducing capability and very less genetic modification and variation will reduce the survival and adaptation chances of the organism and are more likely to go extinct first compared to the other organisms.

Therefore, option c, slow reproduction and less genetic variation in the species will go extinct first.

Learn more about extinction and genetic variability here:

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What is one type of light that can be used for photosynthesis

Answers

Answer:

The majority of green light is useful in photosynthesis. The relative quantum efficiency curve (Photo 1) shows how efficiently plants use wavelengths between 300 and 800 nm. Green light is the least efficiently used color of light in the visible spectrum.

I NEED HELP ASAP
Describe a cause of aerosol (particulate matter) pollution; then briefly explain its effect on human health.

Answers

A major cause of aerosol pollution is the burning of fossil fuels, such as coal, oil, and natural gas for transportation, energy production, and industrial processes.

What is aerosol pollution?

Aerosol pollution is also known as particulate matter pollution. It refers to the presence of tiny solid and liquid particles which are known as particulate matter, in the air. These particles can come from a variety of sources, including vehicle exhaust, industrial processes, construction activities, wildfires, and dust storms.

Aerosol pollution can various harmful effects on human health, as the tiny particles can easily penetrate deep into the lungs and bloodstream when inhaled. Exposure to high levels of aerosol pollution has been linked to a range of health problems, including respiratory and cardiovascular diseases, cancer, and premature death.

Learn more about aerosol pollution, here:

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If 10.0 mL of blood plasma has a mass of 10.279 g and contains 0.870 g of protein, what is the mass/mass percent concentration of protein in the blood plasma

Answers

Answer:

Mass/mass percent concentration means the mass of the solute/mass of the solution times 100. You know both the mass of the solute (0.870 g protein) and the mass of the solution (10.279 g solution). So divide and multiply your result by 100.  (0.870 / 10.279 * 100)

Explanation:

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Complete the following analogy.

Nucleus is to cell as ____
is to company.

a.) president
b.) security
c.) security guard

Answers

I believe the answer is c
I’m going to say A even though there’s no D and it doesn’t make sense but the nucleus is inside the cell so I guess the president is inside the company the cell wall would be the security or security guard

Why Mollusca lost segmentation?

Answers

The ancestors of the Mollusca phylum did not lose segmentation; they never developed it in the first place. Based on their evolutionary development, early species were able to survive without segmentation.

A biologist grows bacterial cultures to see if there is a relationship between time and growth rate. Here are the data. Which hypothesis test would you use to see if there a relationship between growth rates and time

Answers

Answer:

Direct relationship.

Explanation:

There is direct relationship between growth rates and time which means growth rate of organism increases with the passage of time. Direct relationship means if one increases the other automatically increases and if one decreases, the other also decreases. The growth of bacteria becomes double when more time passes and vice versa. After every 20 minutes, the population of bacteria becomes double.

More than 50% of the gas molecules in Earth’s atmosphere are found in the troposphere layer. Identify the force responsible for pulling these molecules closer to Earth’s surface. *
Captionless Image

Answers

Answer:

gravity

Explanation:

gravity is the force that pulls substances towards the earth

Gravitational force is responsible for pulling these gaseous molecules closer to Earth’s surface.

What do you mean by Atmosphere?

An Atmosphere may be defined as a collection of layers that consist of several gases that surround the planet or any celestial body.

Gravitational force involves the attraction of numerous compounds as well as gaseous molecules towards the earth's surface.

Therefore, more than 50% of the gas molecules in Earth’s atmosphere are found in the troposphere layer.

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formula to calculate marginal rate of substitution ​

Answers

Answer:

(MRSxy) = ∆Y/ ∆X

Explanation:

What percentage of businesses are sole proprietorships?
Ob
25 percent
40 percent
75 percent
98 percent
Od

Answers

Answer:

73.1 percent=75 %

Explanation:

Sole proprietorships comprise the majority of all business forms. According to Census data, 73.1 percent of all businesses were sole proprietorships (20.3 million firms). 13.1 percent of all businesses were S corporations (3.65 million firms), and about 8 percent were partnerships (2.2 million firms

How would you describe the development of life on Earth- from simple to
complex or complex to simple.? Glve an example.

Answers

Answer:

From simple to complex.

Explanation:

The development of life on Earth occurs from simple to complex type of organisms. At first organisms are simple body and cellular structure but with the passage of time simple organisms are evolved and turn into complex organisms. The first life that was appeared in the Earth's oceans about 3.8-billion years ago was prokaryotic organisms. For example, Bacteria are the first organism that has simple body structure and appearance but with the passage of time various different types of bacterial species are formed that have complex body structure.

The atmosphere has become less polluted over time.
Please select the best answer from the choices provided

True or false

Answers

Answer:

False your answer is = False

False is the answer

identifying organisms and assigning names to them comprises the activity called________​

Answers

Answer:

Binomial naming system

Explanation:

To find - identifying organisms and assigning names to them comprises the activity called ?

Solution -

The answer is - Binomial naming system

Reason -

The binomial naming system is the system used to name species.

Each species is given a name that consists of two parts.

The first part is the Genus to which the species belongs and the second part is the species name.

Which of the following criteria have to be met for a species to qualify as invasive? Endemic to the area, spreads rapidly, and displaces foreign species Introduced to a new area, spreads rapidly, and displaces other invasive species Introduced to a new area, spreads rapidly, and displaces native species Endemic to the area, spreads slowly, and displaces native species

Answers

Answer:

Introduced to a new area, spreads rapidly, and displaces native species.

Explanation:

A species is invasive when they were not present in the area before, and once that they are there, they reproduce at a high peace. The fast reproduction rate, which leads to the spread of the species in the area, causes a disbalance in the ecosystem since it eats other species, which are native because they are from that area or other species' food. As a consequence, native species die or are reduced in number because the new species invaded their habitat.

An invasive species is not endemic because they are not native to that particular area. They are always external to this one.

Find the volume.
7 in
7 in
9 in

Answers

Answer:

441 in^3

hope this helps

have a good day :)

Explanation:

Answer:
441
Explanation:
multiply

An electric current runs through the circuit below. As the current flows, the temperature of the resistor increases. Which of the following statements is true?

A.
Light energy is being converted into electrical energy in the battery.
B.
Heat energy is being converted into electrical energy in the resistor.
C.
Electrical energy is being converted into chemical energy in the resistor.
D.
Electrical energy is being converted into heat energy in the resistor.

Answers

Answer:

D.Electrical energy is being converted into heat energy in the resistor

A stem cell that has the potential to differentiate into any cell derived from either the endoderm, ectoderm, or mesoderm lineage or into extraembryonic tissues, such as the placenta, has the property of being:

Answers

Answer:

Totipotential.

Explanation:

There are different cell potencies. A totipotent cell is a stem cell that can divide itself and differentiate in any cell that the organism needs. That is to say, endodermal cells, ectodermal cells, mesodermal cells, or extra-embryonic tissues. As cells differentiate themselves, they can gradually lose their potential. The cell's category that follows is pluripotent cells. These are stem cells that can only differentiate into ectoderm cells, endoderm cells, or mesoderm cells. Then we have multipotent cells, which differentiate into tissue cells. The next category is oligopotent cells. They give a limited number of specific cells, and lastly unipotent cells, only differentiate in one type of cell.

Stacy has two fruits one is scaly with a few buds and the other has a hairy structure. Which parts of the vegetable plant did she buy?

Answers

Answer:

So, the first part of Stacy's vegetable is definitely turbous stem. The other part must be root, because it has hairy structures. These hair-like structures have function in the absorption of water and minerals from the soil.

A man with type O blood and a woman with type AB blood get married. What is the probability that they will have a child with type O blood? Prove your answer with a Punnett square.

Answers

Answer: o% chance

Explanation:

Maintaining high global biodiversity is important to provide ecosystem services to humans. Describe one cultural ecosystem service provided by diverse ecosystems.

Answers

Answer:

Ecosystem services of provision or supply

Explanation:

Ecosystem services

When talking about ecosystem services, we are referring to the benefits that ecosystems provide us. There are four types of ecosystem services:  

Provision or supply:

These are the products obtained by nature to be used or consumed, directly or with previous processing. Among them, we might mention food, clear freshwater, fertile soils, geotic materials (such as salt), raw materials (that can be used for clothing, construction), renewable fuels, biochemical compounds, pharmacological/medicinal resources, among others. Provisioning service has an impact on the economy, as many of these products are used to commercialize.  

Regulation:

Refers to ecological processes that improve life. Among others, we might mention climate regulation, CO² absorption, water purification, air purification, erosion control, natural disaster avoidance such as flooding, soil fertility maintenance, waste recycling, pests/plagues control, etc.  

Cultural:

Refers to not the material benefits. Ecosystems also provide a recreational place or area to spend time, to learn, provide a spiritual/religious space, are a source of inspiration. Ecosystems are considered to be cultural patrimony. Ecosystems are the source of scientific knowledge.

Support:

Involves ecological processes needed for the production of the other three previously mentioned services. There are five different support services:

→ Soil formation

→ Photosynthesis

→ Primary production

→ Nutrients cycles

→ Water cycle

Under certain circumstances, regulation services can also be considered support services.

Support service affects human beings indirectly, or direct but causing an effect in a long-term period.  

The Earth's core has an estimated temperature between

Answers

Answer:

5,700 to 6700

Explanation:

The temperature at the inner core's surface is estimated to be approximately 5,700 K (5,430 °C; 9,800 °F), which is about the temperature at the surface of the Sun.

There are three things that largely determine weather conditions. They are:

A. air pressure, thermal energy and water vapor

B. humidity, air pressure, wind

C. air density, air pressure, dew point

D. water vapor, humidity, air pressure

Answers

well its not A, bc humidity has something to do with it. and its not B, bc wind doesn't have anything to do with it. so it might be C or D

I think it b that my final answer

Nuclear hormone receptors are transcription factors that control gene expression by directly binding to DNA and recruiting additional proteins called coactivators and corepressors. Despite being transcription factors, they are often called receptors because they bind hormones.

Answers

Answer:

Yes.

Explanation:

Yes, Nuclear hormone receptors is also responsible for binding hormones due to presence of Ligands. Ligands bind to and activate nuclear receptors such as lipophilic substances such as endogenous hormones, vitamins A and D, and xenobiotic endocrine disruptors. The first role of Nuclear hormone receptors are the control of gene expression by directly binding to DNA and its second role is binding of hormones.

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