Biology College

how would you classify a star that is several thousands times brighter than the sun with a temperature lower than 4000k??
Science class btw

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Answer 1

Answer:

A sugergiant star

Explanation:

I'm not even joking

Related Questions

.Why do you think some animals migrate while others are able to live in the same place year round?

Answers

Answer:

Climate and Weather: Some animals migrate to avoid extreme weather conditions, such as cold winters or dry seasons. By moving to more favorable climates, they can find suitable temperatures, avoid resource scarcity, or escape harsh environmental conditions.

Answer:

There are several reasons why some animals migrate while others are able to live in the same place year-round. One of the main reasons is related to the availability of resources such as food, water, and shelter. Animals that live in areas with a stable and predictable supply of resources may not need to migrate, while those that live in areas with seasonal changes in resource availability may need to move to find food and water.

Another factor that can influence migration is climate. Animals that are adapted to cold temperatures may migrate to warmer areas during the winter months, while those that are adapted to warmer temperatures may migrate to cooler areas during the summer months.

Genetics and evolution can also play a role in migration patterns. Some species have evolved to migrate as a way to avoid predators or to take advantage of seasonal changes in resource availability. Other species have evolved to stay in one place year-round and have developed adaptations that allow them to survive in their environment without the need to migrate.

Overall, the decision to migrate or stay in one place year-round is influenced by a complex interplay of environmental, genetic, and evolutionary factors.

you inoculate a sterile broth with *e. coli* but after 48 hours of incubation at 37 degrees celsius, the medium remains clear. which of the following errors may have occurred?

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One possible explanation is that the inoculation was contaminated with another microorganism that is inhibiting the growth of E. coli.

Another possibility is that the sterilization process was not effective and the broth still contains contaminants that are preventing E. coli growth. Additionally, the incubation temperature of 37 degrees Celsius may not be suitable for E. coli and the bacteria are not able to grow and reproduce effectively in this environment. It's also possible that the E. coli strain used in the inoculation is not viable and is unable to grow and multiply in the broth. To resolve this issue, it's important to carefully control the sterilization process and to choose the appropriate temperature and incubation conditions for the bacteria being studied.

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How does the lung helps in homeostasis

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Gas exchange in the lungs is one of the ways that the respiratory system helps maintain homeostasis. This gaseous exchange of oxygen and carbon dioxide takes place in alveolar sacs present in the lungs!!

which of the following is true regarding the electron transport chain? (select all that is/are true) group of answer choices it occurs in the cytoplasm of a cell. it occurs in the mitochondria of a cell protons are actively pumped from the inner membrane space to the matrix via the ets complexes. molecular oxygen (o2) is required for it to operate nadh donates a hydride to complex i, which donates electrons to complex iii then to complex iv with o2 being the final electron acceptor.

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It occurs in the mitochondria of a cell protons are actively pumped from the inner membrane space to the matrix via the ets complexes, is the correct statement about the electron transport chain.

Mitochondria ar membrane-bound cell organelles (mitochondrion, singular) that generate most of the energy required to power the cell's organic chemistry reactions. energy made by the mitochondria is keep in a very little molecule known as ATP (ATP).

The mitochondrial matrix is that the website of the tricarboxylic acid (TCA) cycle, a series of catalyst reactions initiated by the conversion of pyruvate and fatty acids to acetyl group coenzyme A (acetyl-CoA). Pyruvate and fatty acids ar transported into mitochondria from the protoplasm by membrane-bound permeases.

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A certain type of non-native fungus has affected crops on Tim’s farm. Tim has decided to use a chemical control method to eradicate the invasive species. He applied a pesticide to the outer layer of the stems of his crops. Which chemical control method did Tim use?

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Tim used a chemical control method known as pesticide application.

Pesticide application involves the use of chemicals to control or eradicate pests, such as insects, fungi, and weeds. In Tim's case, he applied a pesticide to the outer layer of his crop stems to control the non-native fungus that had affected his crops. Pesticides can be applied in various forms, such as sprays, dust, and granules.

The type of pesticide used depends on the target pest and the crop being protected. While chemical control methods such as pesticide application can be effective, they also have potential drawbacks, such as the development of pesticide resistance in the targeted pest populations and the risk of harming non-target organisms and the environment.

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HELP PLEASE Name any two of the major types of chemical substances that are broken down in chemical digestion. For each substance, name an enzyme that breaks them down and what final product is actually absorbed by the body for use or storage.

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Two major types of chemical substances that are broken down in chemical digestion are carbohydrates and proteins. Carbohydrates are broken down by the enzyme amylase, which is found in saliva and the pancreas.

Proteins are broken down by a group of enzymes called proteases, which are produced by the stomach and pancreas. Proteases break down proteins into smaller peptides and individual amino acids, which can be absorbed by the body and used to build new proteins or as a source of energy. Overall, the breakdown of carbohydrates and proteins in chemical digestion is crucial for the body to obtain the nutrients it needs for energy, growth, and repair. Amylase breaks down complex carbohydrates into simpler sugars, such as glucose and fructose, which can be absorbed by the body and used for energy or stored as glycogen in the liver and muscles.

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What is the purpose of strand B?

a.) To act as a template for the synthesis of messenger RNA

b.) To carry the code from the DNA molecule in the nucleus to the ribosome

c.) Delivers specific amino acids to the ribosome to make proteins

d.) Transfers nucleic acids to the nucleus

Answers

Answer:

The answer is a)

Explanation:

Hope it is helpful for you ✌️

Maggots can be used to help predict PMI for a body discovered
hidden among the tall weeds of field
twenty years after death
buried in a deep wet grave
on an ice flow off the Alaskan coast

Answers

Answer:

The answer is A, hidden among the tall weeds of field.

Explanation:

Maggots can no longer grow on a body that died 20 years ago. It would have dried out, making it a bad habitat.

It can't be buried in a deep, wet grave, because it would be hard for flies or maggots to get that deep into the soil, so they're going to look for easier options.

If a body was found on an ice flow off the Alaskan coast, it is far too cold for flies to lay eggs on the body.

This leaves "hidden among the tall weeds of a field," which doesn't say that the body has dried out, it's probably not too cold, and it's easy accessible to the flies that need to lay eggs.

When developing his ideas about natural selection, Darwin focused most on

A. group behavior.
B. DNA
C. kin selection.
D. adaptations.

Answers

Darwin focused most on adaptations when developing his ideas about natural selection (Option D).

What are evolutionary adaptive features?

Evolutionary adaptive features are different phenotypic traits in organisms that confer an advantage in reproduction and or survival for a particular environment in which these organisms live. Thus the process of natural selection selects them to form the next generation.

Therefore, with this data, we can see that evolutionary adaptive features are separated by natural selection in order to produce a new generation of individuals associated with these phenotypic traits.

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In _______, with the help of Rosalind Franklin, ____________ discovered the structure of DNA.
A. 1915, Watson and Crick
B. 1953, Watson and Chargaff
C. 1953, Watson and Crick
D. 1951, Chargaff

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Answer:

The answer is C.) 1953, Watson and Crick. In 1953, with the help of Rosalind Franklin, Watson and Crick discovered the structure of DNA.

Explanation:

To be specific, James Watson and Francis Crick were the first people to make a 3-D model of DNA. Although it may not seem much today, as our technology has advanced so much ever since, it was big time in 1953. They discovered that DNA was shaped like a double-helix, or twisting ladder. Pretty intriguing if you ask me!

In _______, with the help of Rosalind Franklin, ____________ discovered the structure of DNA.A. 1915,

Communication in the nervous system is called electrochemical. Why is this so?

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Answer:

The movement of the action potential down the length of the axon is an electrical event, and movement of the neurotransmitter across the synaptic space represents the chemical portion of the process.

Which statement best describes a spring?

•the top of the saturated zone

•an underground layer of rock or sediment that holds groundwater

•groundwater flowing naturally to the surface where it is lower than the water table

•a vent in Earth's surface that periodically ejects a column of hot water and steam

Answers

Answer:

groundwater flowing naturally to the surface where it is lower than the water table

Explanation:

Answer:

Explanation:

Do you believe it is important for a human to have a basic understanding of science? Why or why not?

Give two reason for explaining.

Answers

Answer: Yes.

Explanation: Why?

Having a basic understanding of science, on a large scale, has allowed humans to advance and go through evolution throughout time. But based on today, and what we see everyday, science is apart of our everyday lives. Science is the way we know what is good for our body and what isn't. Science is what allows us to maintain healthy, what foods help out these body systems?

The answer I have provided might be a small paragraph, but I hope you can take something out of it. It could also set up an example for an answer of your own! :)

It is important for a human to have a basic understanding of science. The reason for this importance is that science answers the “why” to questions and challenges ideas to gain further and deeper knowledge about our surroundings. Science isn’t always a matter of things like chemicals or explosions; it’s more of an educated guess on the reasoning for why events occur and the presentation of solid evidence to support the claim. Another reason would be that if it were not for science, we would not understand how the world works. Discoveries such as the idea of gravity, the laws of motion, and friction all are complex ideas in which humans need a basic understanding of science to know about.

What does an enzyme do? Be sure to mention substrates in your answer.

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Enzymes create chemical reactions in the body. They actually speed up the rate of a chemical reaction to help support life. The enzymes in your body help to perform very important tasks. These include building muscle, destroying toxins, and breaking down food particles during digestion. To catalyze a reaction, an enzyme will grab on (bind) to one or more reactant molecules. These molecules are the enzyme's substrates. In some reactions, one substrate is broken down into multiple products. In others, two substrates come together to create one larger molecule or to swap pieces.

evolutionary significance of bryophytes

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The bryophytes, which include mosses, liverworts, and hornworts, have significant evolutionary significance in the plant kingdom despite their relatively small size and simple structure, they played a crucial role in the colonization of terrestrial environments and the subsequent evolution of higher plants.

Here are some key evolutionary significance of bryophytes:

Adaptation to land: Bryophytes are considered some of the earliest land plants.

They were the first plants to transition from aquatic to terrestrial habitats, paving the way for the colonization of land by other plant groups.

They developed strategies to overcome challenges such as desiccation, limited nutrients, and anchorage to the soil.

Moisture retention: Bryophytes have adaptations that enable them to retain moisture.

They possess specialized structures, such as rhizoids and mucilage, that help absorb and retain water.

This ability to retain water and survive in relatively dry environments was an important adaptation for the conquest of land.

Soil formation: Bryophytes, especially mosses, contribute to soil formation.

They can grow on bare rocks and soil, where their rhizoids aid in weathering and breaking down substrates.

Their decomposed remains also contribute organic matter to the soil, enriching its fertility.

Habitat creation: Bryophytes provide habitat and microenvironments for other organisms.

Their dense mats or cushions create shelter, moisture, and temperature buffering for a variety of organisms, including insects, small invertebrates, and microorganisms.

They contribute to the overall biodiversity and ecosystem functioning.

Reproductive strategies: Bryophytes have unique reproductive strategies. They produce spores that can disperse and colonize new habitats.

Their reproductive structures, such as gametophores and sporophytes, exhibit various adaptations that allowed for successful reproduction in terrestrial environments.

Ecological indicators: Bryophytes are sensitive to environmental changes, making them valuable ecological indicators.

Their presence, abundance, and diversity can indicate environmental conditions such as air quality, moisture levels, and habitat disturbance.

Monitoring bryophytes can provide insights into the health and integrity of ecosystems.

Overall, bryophytes played a crucial role in the evolution and colonization of land by plants.

Their adaptations, ecological roles, and evolutionary history make them important subjects of study for understanding plant evolution, ecosystem dynamics, and the colonization of terrestrial environments.

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Here are some key evolutionary significance of bryophytes:

Adaptation to land: Bryophytes are considered some of the earliest land plants.

They were the first plants to transition from aquatic to terrestrial habitats, paving the way for the colonization of land by other plant groups.