Answer:
Photosphere
Explanation:
The inner layers are the Core, Radiative Zone and Convection Zone. The outer layers are the Photosphere, the Chromosphere, the Transition Region and the Corona. IRIS will focus its investigation on the Chromosphere and Transition Region.
The most significant difference between an angiosperm and a gymnosperm is that: a. angiosperms preceded the gymnosperms in evolutionary history b. angiosperms develop vascular tissue and gymnosperms do not c. angiosperms produce secondary growth and gymnosperms do not d. angiosperms produce a complete reproductive system enclosed as a determinate structure e. angiosperms produce seeds and gymnosperms do not
The most significant difference between an angiosperm and a gymnosperm is that: d. angiosperms produce a complete reproductive system enclosed as a determinate structure.
This means that angiosperms have flowers and produce seeds within a fruit, while gymnosperms have cones and produce seeds without a fruit covering.
Angiosperms are flowering plants, and they have a complete reproductive system enclosed within a structure called the flower. The flower consists of four types of organs: sepals, petals, stamens, and carpels.
The carpel is the female reproductive organ, and it contains the ovary, which produces and protects the ovules. After fertilization, the ovary develops into a fruit that surrounds and protects the seeds. This is a determinate structure, meaning that the reproductive system is enclosed and produces a finite number of seeds.
On the other hand, gymnosperms do not produce flowers or fruits. Instead, they produce seeds that are not enclosed in a fruit covering. Gymnosperms have reproductive structures called cones that contain the male and female reproductive organs.
The female cones contain ovules that are not enclosed, and after fertilization, they develop into seeds. This is an indeterminate structure, meaning that the reproductive system is not enclosed and can produce a large number of seeds.
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Which cells have been used extensively by researchers to study vaccines, diseases and cell biology?
Answer:Animals have been used in the industrialized production of human vaccines since vaccine farms were established to harvest cowpox virus from calves in the late 1800s. From that point, and through the first half of the 20th Century, most vaccines would continue to be developed with the use of animals, either by growing pathogens in live animals or by using animal cells.
Explanation:
Which statement about cellular respiration is true ?
A. Oxygen is waste in cellular respiration for BOTH plants and animals
B. Oxygen is a waste in cellular respiration in plants but NOT in animals
C. Carbon dioxide is a waste in cellular respiration in BOTH plants and animals
D. Carbon dioxide is a waste in cellular respiration in plants but NOT in animals
Answer:
C. Carbon dioxide is a waste in cellular respiration in BOTH plants and animals
Explanation:
Cellular respiration occurs in animals and plants. It breaks down sugar in the presence of oxygen to release energy in the form of ATP. This process releases carbon dioxide and water as waste products.
Answer:
the answer is c
Explanation:
what is stronger? lignin or cutin or suberin?
Which function allows animals to find mates?
movement
homeostasis
reproduction
feeding
Answer: MOVEMENT
Explanation:
Movement
Movement can be described as the change in the place of an object or animals, without the ability to move there is not a possibility of life on earth. Movement is essential for many animals that help them to find food, shelter, and mate for the reproduction and produce offspring by mating.
The function that allows animals to find mates is movement, which is present in the first option as movement is a unique characteristic that is only present in animals but not in plants.
What is the significance of the movement?In the animal kingdom, movement is required to find a mate, as the animal must move from one location to another to find a suitable mate, while it is absent in plants. Plants do not move, but pollinators assist in this process, whereas animals use movement to find food by walking on their legs or flying, and they also use movement to find mating partners.
Hence, the function that allows animals to find mates is movement, which is present in the first option as movement is a unique characteristic that is only present in animals but not in plants.
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Give several reasons why nutrition has become a national concern.
Answer: A healthy diet prevents malnutrition and protects from diseases like obesity, heart disease, diabetes, cancer and stroke. Today, many people's diets consist of more saturated fat, trans fats, sugars, and more sodium than fruits, vegetables and dietary fiber. Your body's health reflects what you put into it.
1.) What gives water all its properties? 2.) What type of bond joins H2O to another H2O and forms cohesion? 3.) What property of water prevents rapid temperature change inside the body of organism? 4.) Which property of water allows water to attach to roots of plants for capillary action? 5.) Water is found in many compounds such as blood, saliva, sweat because of which property of water? 6.)Which property of water causes water to form drops? 7.)Which property of water helps maintain extreme temperature changes in an area? 8.) What happens to hydrogen bonds when water turns to ice? 9.) Why doesn't water break down fat? 10.)Which property of water causes surface tension? Cohesion, Adhesion, High heat capacity, high heat vaporization and polarity
Answer:
1. polarity
2. hydrogen bonding
3. High heat capacity
4. Adhesion
5. polarity
6. surface tension
7. high heat vaporization
8. hydrogen bonds form a rigid and stable network
9. Water is a polar substance and fat is a nonpolar substance.
10. Cohesion
Explanation:
Water is a polar molecule that is held together by hydrogen bonds to form strong cohesive forces. This accounts for the surface tension in water. Surface tension is the force acting on water that it makes to behave like a stretched elastic skin.
The polarity of water accounts for the fact that it is found in several parts of the body where it largely plays the role of a polar solvent.
High heat capacity of water enables it to function well in the area of thermoregulation in the body. High heat vaporization accounts for the fact that water helps maintain extreme temperature changes in an area.
When in solid state, the hydrogen bonded network in water becomes rigid and forms a very stable network of water molecules. Being polar, water does not interact with fat because like dissolves like.
In plants, the attachment of water to plant roots is known as adhesion and is necessary for the capillary movement of nutrients to plants via the root.
how replacing fossil fuels with biofuels will affect climate change
Answer: Replacing fossil fuels with biofuels has the potential to reduce some undesirable aspects of fossil fuel production and use.
Explain:
Fuels produced from renewable organic material possibly have the potential to reduce some undesirable aspects of fossil fuel production and use, including conventional and greenhouse gas (GHG) pollutant emissions, exhaustible resource depletion, and dependence on unstable foreign suppliers also. -i hope this helped :)
Which best describes the relationship between DNA, genes,
and chromosomes?
Answer:
Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.
The system of classification developed in ancient Greece by Aristotle was used in Europe up until the early 1700s. How did the Linnaean system of classification improve Aristotle's system?
a. It introduced the concept of species.
b. It included a hierarchy of taxa. c. It classified organisms based on physical characteristics.
d. It used Latin names for organisms.
The Linnaean system of classification improved Aristotle's system by introducing the concept of species, including a hierarchy of taxa, and using Latin names for organisms.
How did the Linnaean system enhance Aristotle's classification?The Linnaean system of classification, developed by Carl Linnaeus in the 18th century, significantly improved upon Aristotle's system in several key aspects.
First, Linnaeus introduced the concept of species, which provided a clear and distinct category for identifying and classifying organisms based on their shared characteristics. This concept allowed for a more precise understanding of the diversity of life forms and facilitated more accurate categorization.
Second, the Linnaean system implemented a hierarchical structure of taxa, organizing organisms into increasingly specific groups. This hierarchical approach, which includes kingdom, phylum, class, order, family, genus, and species, allowed for a systematic and organized classification system.
It provided a framework to arrange organisms based on their shared characteristics and relationships, enabling scientists to easily locate and identify species within the larger context of the natural world.
Additionally, the Linnaean system introduced the use of Latin names for organisms, which provided a standardized and universal naming convention. Latin names, also known as binomial nomenclature, consist of a genus and species name (e.g., Homo sapiens for humans).
This naming system ensured consistency and clarity in the identification and communication of species across different languages and regions. The Linnaean system of classification revolutionized the field of taxonomy and laid the foundation for modern biological classification.
It enabled scientists to organize and study the vast array of life forms systematically, facilitating the understanding of evolutionary relationships and the exploration of biodiversity.
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True or False? My brain refuses to compute.
Volume is defined as the amount of mass that an object has.
Answer: true
Explanation: it takes up as much space as it has
A boat carries two teams of scuba divers to the middle of the Atlantic Ocean, where they remain for the day. One team of divers stays close to the surface. They explore the
surface waters within a distance of 1000 meters from the boat. The second team of divers descends to a depth of 1000 meters below the surface.
• Which team will be able to observe the greater variety of living things in the waters they visit? Explain your answer.
The team that would observe the greater variety of living things in the waters they visit is the second team.
What is the team that sees the greatest variety of living things?We have to note that the aquatic ecosystem has a great degree of biodiversity. This implies that there are several kinds of organisms that can be found in the ecosystem that exists in the water that is under study.
Recall that just like every other ecosystem, the ecosystem that you can find in the water is completely a self supporting ecosystem. There a re producers, consumers and decomposers as in every other ecosystem that we have.
The biodiversity in the ocean increases as we move down towards the bottom of the ocean as most of the organisms tend to live in the benthic zone which is the zone that is very cold and about 1000 meters below the surface.
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Two students were discussing inheritance in science class. Both students knew that genes and chromosomes had something to do with human inheritance. The students came up with four explanations of what genes do in the process of inheritance. Which is the best explanation of what genes do?
Answer:
Genes are part of chromosomes and genes provide the instructions to cells on how to make our traits.
Explanation:
Genes make chromosomes and chromosomes make up our organs, which give us the traits we inherit. Genes directly cause physical changes to our chromosomes; then the chromosomes produce our traits. Genes directly cause physical changes on our cells’ nuclei. The nuclei then produce our traits. Genes are part of chromosomes and genes provide the instructions to cells on how to make our traits.The correct answer would be that genes are part of chromosomes and genes provide the instructions to cells on how to make our traits.
Generally, the chromosome is a component of the genome that carries the genes. Depending on the organism, a chromosome can carry as many as thousands of genes at a time. Each gene is a factor or a set of instructions that control a particular trait of the cell or the organism. Every trait of a cell/an organism is controlled by a gene or multiple genes.
ANSWER ASAP PLEASE!
_______ stores and transports materials like nutrients
A. Cytoplasm
B. Nucleus
C. Vesicle
D. Organelles
Answer:
c
Explanation:
Explanation:
that would be d because ctyroplasm is like your skin it holds all your organs in place nucleous
resistance varies in mike's conducting airways. using your understanding of respiratory anatomy, explain where in his airway the resistance is highest and why.
The resistance is highest in the smaller conducting airways, specifically in the bronchioles, which are the smallest airways in the lungs.
The bronchioles are lined with smooth muscle, which can constrict or relax to adjust airflow resistance. When the smooth muscle contracts, the airway diameter decreases, and the resistance to airflow increases. This is known as bronchoconstriction, which can occur in response to various stimuli such as allergens, irritants, and exercise.
Additionally, the bronchioles lack cartilage support, which makes them more prone to collapse under negative pressure. Therefore, given that the resistance varies in Mike's conducting airways, the highest resistance is likely to be in his bronchioles, which are the smallest airways with smooth muscle and lack of cartilage support.
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Which phrase best describes an individual organ?
A. Meets all the needs of an organism
B. The simplest unit of life
C. Made of one kind of cell
ОО
D. Made of different kinds of tissues
SUBMIT
Answer:
C. Made of one kind of cell
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If you can continuously eat without feeling full, what hormone
might a human be in deficit of?
1. Glucose
2. Neuropeptide Y
3. Testosterone
4. Glucagon
5. PYY
6. Leptin
If a human can continuously eat without feeling full, they might be in deficit of the hormone leptin, option 6 is correct.
Leptin is primarily produced by fat cells and acts as a satiety hormone, signaling to the brain that the body has sufficient energy stores. It helps regulate appetite and energy balance by suppressing hunger and increasing energy expenditure. When leptin levels are low or the body becomes resistant to its effects, the brain doesn't receive the signal that the body is satiated, leading to excessive food intake and a lack of feeling full.
While the other hormones listed, such as glucose, neuropeptide Y, testosterone, glucagon, and PYY, may play a role in appetite regulation and energy balance, leptin is specifically associated with signaling fullness and satiety. Its deficiency or resistance can disrupt the normal feedback loop between the body and the brain, resulting in continuous eating without feeling satisfied, option 6 is correct.
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Construct a written argument of how genetic variation in the ladybug population increased the chance of survival of some individuals and changed the population over time. Include evidence and reasoning.
Individuals have a higher chance of surviving thanks to the genetic diversity in ladybird populations, which also helps them adapt to shifting circumstances. Selection for favourable features, like immunity or colour, causes the frequency of advantageous genes to rise over time in the population.
How can genetic diversity improve the likelihood of a species surviving?By retaining a substantial genetic diversity, organisms can adapt to shifting environmental conditions and avoid inbreeding. Inbreeding occurs in small, isolated groups, which may make a species less able to survive and reproduce.
How can genetic diversity boost the likelihood of evolution?Different phenotypes can be introduced into organism by genetic changes gene activity or protein function. if a trait is beneficial and aids in the individual's ability to reproduce and live.
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Some species of flowers have markings that are visible only to insects with the ability to see ultraviolet light waves. These markings help the plants -
A. avoid parasitic insects
B. attract pollen-gathering insects
C. seek out moisture in the soil
D. create a strong scent to attract bats
Answer:
B. attract pollen-gathering insects
Some flower species have marks visible only to insects with the ability to see waves of ultraviolet light, to attract pollen-gathering insects.
How do insects see flowers?Ultraviolet flowering photography gives us a hint of what flowers look like to pollinators. Insects see the world very differently than humans do. They can't see red light like we can, but they can see ultraviolet wavelengths invisible to the human eye.
With this information, we can conclude that some flower species have marks visible only to insects with the ability to see waves of ultraviolet light, to attract pollen-gathering insects.
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antioxidant and antibacterial activities of artemisia absinthium and citrus paradisi extracts repress viability of aggressive liver cancer cell line
Artemisia absinthium and Citrus paradisi extracts have both antioxidant and antibacterial activities. These activities have been shown to repress the viability of aggressive liver cancer cell lines.
Artemisia absinthium is a plant that is commonly known as wormwood. It has been used for centuries for its medicinal properties. Citrus paradisi is a citrus fruit that is commonly known as grapefruit. It is also a good source of antioxidants.
Studies have shown that both Artemisia absinthium and Citrus paradisi extracts have antioxidant and antibacterial activities. These activities can help to protect cells from damage and infection. In addition, these activities have been shown to repress the viability of aggressive liver cancer cell lines.
One study found that Artemisia absinthium extract was able to inhibit the growth of liver cancer cells by up to 80%. Another study found that Citrus paradisi extract was able to inhibit the growth of liver cancer cells by up to 70%.
These findings suggest that Artemisia absinthium and Citrus paradisi extracts may have potential as cancer treatments. However, more research is needed to confirm these findings and to determine the optimal dosage and administration route.
Here are some additional details about the antioxidant and antibacterial activities of Artemisia absinthium and Citrus paradisi extracts:
* Artemisia absinthium extract contains a compound called thujone, which has antioxidant and antibacterial properties.
* Citrus paradisi extract contains a compound called limonene, which has antioxidant and antibacterial properties.
* Both Artemisia absinthium and Citrus paradisi extracts have been shown to inhibit the growth of cancer cells in vitro.
More research is needed to determine the efficacy and safety of these extracts in humans. However, the findings of these studies suggest that they may have potential as cancer treatments.
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Which of the following determines the gravitational force between Earth and the Moon?
Answer:
Explanation:
it is not gravity. It is difference of the accelerations of Earth and Moon. The reason he Moon does not bang into the Earth. Following is why I think this way.
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Which statement best describes the cycling of carbon between the hydrosphere and geosphere?
Transfer of organic material to lakes and streams by runoff
Precipitation and condensation increasing the groundwater supply
Glaciers melting due to an increase in global climate temperatures
Organisms breaking down nutrients in the soil which helps plants grow
Answer:
A. Tranfer of organic material to lakes and streams by runoff.
Answer:
Transfer of organic material to lakes and streams b runoff.
All eukaryotic cells contain at least one Golgi complex, typically located in the cytoplasm and near the endoplasmic reticulum.
Which of the following best describes a process that occurs within the Golgi complex?
Answer:
Lysosomes are created by the addition of hydrolytic acid to endosomes from the Golgi apparatus. Basically, the Golgi apparatus receives protein enzymes from the ER, which are packaged in a vesicle in the Golgi apparatus, processed and finally, pinched off as a Lysosome.
Explanation:
it creates lysosomes
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Inherited traits are described by probabilities. When experimenting on inherited traits, why is it important to have a large sample size?
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Answer:
results will be more accurate if there is a larger sample size.
No matter what research is, the larger sample size is, the more accurately will be the results and vice versa. The larger samples increase a chance of significance because they reflect the population mean more reliably.
With small sample, the chance for false conclusions is higher.
Explanation:
when a cell is in anaphase what happens to the dna?
Answer:
During anaphase, each pair of chromosomes is separated into two identical, independent chromosomes. The chromosomes are separated by a structure called the mitotic spindle.Explanation:
In animal cells, cell junctions called ______ junctions form barriers between cells that prevent leaking of fluids and water-soluble molecules.
A mixture of sperm cells and fluids from the seminal vesicles,prostate gland, and bulbourethral glands form_________
A mixture of sperm cells and fluids from seminal vesicles, prostate gland, and bulbourethral gland form semen or seminal fluid.
The semen is a slightly alkaline mixture of the sperm cells and it is secreted from the accessory glands. It contains sugars, proteins and even some vitamins and minerals.
The secretion of semen is from vesicle that contributes about 60% of its volume and most of the remainder comes from prostate glands. The sperm and secretion from the bulbourethral glands contribute a very small volume.
The volume of semen per ejaculation may vary from 1.5 to 6ml. That contains usually between 50 to 150 million sperms per millilitre of semen.
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What is a gene? Describe the function, structure, and location of genes within the cell.
Answer:
Genes are a section of DNA that are in charge of different functions like making proteins. Long strands of DNA with lots of genes make up chromosomes. DNA molecules are found in chromosomes. Chromosomes are located inside of the nucleus of cells.
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Which cell in the brain filters blood plasma to produce cerebrospinal fluid?
Choroid plexus cells are ependymal cells that have been modified to surround the capillary loops that produce cerebrospinal fluid (CSF).
The choroid plexus is a complex network of capillaries lined with specialized cells that perform a variety of functions. One of its main functions is the production of cerebrospinal fluid (CSF) via the ependymal cells that line the ventricles.
Choroid plexus epithelial cells secrete cerebrospinal fluid (CSF) by a process involving the transfer of Na(+), Cl(-), and HCO(3)(-) from the blood to the ventricles. This creates an osmotic gradient that promotes H(2)O secretion. A network of blood vessels and cells within the ventricles (fluid-filled spaces). Blood vessels are lined with a thin layer of cells that form the cerebrospinal fluid.
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in your own words how's the cell cycle related to the growth and maintenance of organisms
Answer:
In unicellular organisms, cell division is the means of reproduction; in multicellular organisms, it is the means of tissue growth and maintenance. Most tissues of the body grow by increasing their cell number, but this growth is highly regulated to maintain a balance between different tissues.
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