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A proton is a subatomic particle that has a positive electric charge. Its mass is slightly less than a neutron that has no electric charge.
Visual summary for chapter 1 : what is Nutrition
What is Nutrition? Simply said, Nutrition is the study of food at work in our bodies, our source for energy, and the medium for which our nutrients can function. Think of nutrition as the building blocks of life.
The essential nutrients for life include carbohydrates, proteins, and lipids (fats), as well as fiber, vitamins, minerals, and water—the solvent for all soluble ingredients in the blood and cells. The absorption of nutrients starts the moment we begin to digest our foods, as they are transported to assist all the metabolic processes in the human body.
Good nutrition means getting the right amount of nutrients from healthy foods in the right combinations. Having nutrition knowledge and making smart choices about the foods you eat can and will help you achieve optimum health over your lifetime, and be a key to avoiding obesity, illness, and many of today’s most prevalent chronic diseases.
Nutrition is the study of the nutrients in food and how they affect our body's health. It involves understanding different types of nutrients, their functions, and concepts like energy balance and balanced diet.
Explanation:Nutrition is the study of the nutrients in food and how they affect our body's health. It explores the processes of digestion, absorption, and metabolism of nutrients, as well as the role of nutrients in growth, development, and disease prevention.
Nutrition involves the understanding of different types of nutrients such as carbohydrates, proteins, fats, vitamins, and minerals, and their functions in the body. It also encompasses concepts like energy balance, recommended dietary allowances, and the importance of a balanced diet.
Overall, the study of nutrition helps us make informed choices about what we eat to maintain good health and prevent nutritional deficiencies or diseases.
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Which statement about natural selection is true?
A.
Natural selection and evolution are two terms for the same phenomenon.
B.
Natural selection is an outdated theory to explain how evolution took place.
C.
Natural selection is the process by which organisms with more beneficial traits are more likely to survive and reproduce.
D.
Natural selection is the process by which organisms develop variation in traits, which gives them a better chance of survival.
The answer is C. Natural selection is about ones traits being better than another’s which allow it to survive in the wilds longer.
Answer:
C.
Natural selection is the process by which organisms with more beneficial traits are more likely to survive and reproduce
Explanation:
Natural selection is a driving force for evolution that operates of genetic variations. The individuals with beneficial genetic traits are able to survive and reproduce more as compared to the other individuals with no beneficial traits.
This differential reproductive and survival rate of organisms due to adaptive genetic traits is called natural selection.
Which characteristics belong to a eukaryote
Providing immunity by injecting the body with a weakened form a pathogen is known as
Answer:
vaccination
Explanation:
The vaccination has been one of the most revolutionary inventions in the medical field. This invention helped protect people from numerous diseases, some being totally neutralized, while some having only minor effects on the human body. The vaccination basically is a way of enhancing the immune system of the body by injecting in it a weakened form of the pathogen. In this way, the weakened form of the pathogen is not capable to harm the body, and the body is not fighting against it, but instead the pathogen becomes part of the body and its defense mechanism, so when the pathogen strikes, the body has a counter attack and defeats it.
Answer:
vaccination
Explanation:
What is a major drawback of using fossil fuels?
A. They warm the planet
B. They are flammable
C. they release oxygen when burned
D. They contain no greenhouse gases
Answer:
A, they warm the planet
The land biomes are named for their
A. Large animals?
B. Predominant vegetation
C. Average climate
D. Physical location
Predominant vegetation
Enzymes are proteins that speed up reactions by
providing an additional energy source
supplying additional molecules for the reaction
removing inhibitors that slow down reactions
lowering the amount of energy required
Answer,
D/Lowering the amount of energy required.
Question 15 (5 points)
In____bonding positively charged metallic ions are surrounded by a cloud of electrons.
ionic
covalent
triple
metallic
Answer:
Metallic bonding
In metallic bonding positively charged metallic ions are surrounded by a cloud of electrons.
Light sensitivity in euglena is provided by the _____.
Answer:
Light sensitivity in euglena is provided by the eyespot.
muscle fatigue causes
Answer:
Weakness/soreness in the muscles
An acid has a pH
greater than 7.
less than 7.
equal to 7.
none of the above
Answer: less than 7
Explanation: it’s acidic
Anything less then seven is acidic. Anything that has a pH of 7 is neutral, and anything above seven is basic
Hope this helped for this question and for future assignments!
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When a scientist is conducting research about all the plants and wildlife in the Mojave Desert as well as the desert’s resources, such as water and soil, the scientist is studying
Answer:
ecosystem
Explanation:
In this case, we have a situation where the scientist is describing an ecosystem. The ecosystem represents all the living organisms (flora and fauna), their environment, and the interactions that they all have between each other. In this case, we have the plants and animals being described, thus the flora and fauna, as well as the water and soil, thus their environment, so we have description of an ecosystem, or more specifically, the desert ecosystem of the Mohave Desert.
Answer:
an ecosystem
Explanation:
How do the chloroplasts help the sea slug
Answer:
It allows the slug to capture energy directly from light, just like a plant would do through photosynthesis. Also, if the slug does't have it's normal food supply, Chloroplast can help the Sea Slug to survive for months.
Explanation:
Which two protists evolved from a symbiotic relationship of organisms, which resulted in eukaryotic organisms containing chloroplasts?
The protist which evolved from the endo-symbiotic relationship is Euglena and green algae.
Endosymbiosis is the phenomenon of engulfing one organism which can live in a symbiotic relationship within. it has deeply impacted the evolution of life.
The correct answer is Endosymbiosis and protist.
What is the endosymbiotic process?
The symbiotic relationship in which one organism lives with the other is called endosymbiosis. Primary endosymbiotic refers to the early internalization of prokaryotes by eukaryotic progenitor cells, leading to the formation of mitochondria and chloroplasts.
Belongs to diverse taxonomic groups, especially unicellular, sometimes colonial, or, more rarely, multicellular, usually protozoa, most algae, and often some fungi (such as slime). ), Which belongs to the kingdom of eukaryotes (protozoa, synonymous with Protoctista).
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Which chemical is most important in telling a plant when to flower?
phytochrome
nitrogen
carotenoid
chlorophyll
The chemical that is most important in telling a plant when to flower is phytochrome.
Which chemical is most important in telling a plant when to flower?Phytochrome is a blue-green pigment found in many plants, which regulates various developmental processes.Phytochrome is widely distributed in the plant kingdom. Although green leaves are the organs, which perceive daylight most effectively, their phytochrome content is very low. For this reason, most studies with phytochrome have used etiolated seedlings from which phytochrome has been obtained in highly purified form.The light receptors of plants are Phytochrome Red and Phytochrome Far Red. They are both color pigments found in leaves. They are chemically reactive and absorb red light at specific wavelengths. This chemical reaction tells the plant whether to continue vegetating or flowering.Hence, the phytochrome chemical is most important in telling a plant when to flower.
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What state best describes natural selection
Answer:
Louisianna
Explanation:
8. How does this snake obtain nutrients from corn?
A. By eating the corn directly
B. By eating the grasshopper
C. By living in the cornfield
D. By eating the lizard
Answer:
D. By eating the lizard
correct answer
Explanation:
6. In the DNA double helix, how are the two strands of DNA held together? A. Chemical bonds between base pairs hold the two strands of DNA together. B. Hydrogen bonds between the base pairs hold the two strands of DNA together. C. Hydrogen bonds between sugar groups and phosphate groups hold the two strands of DNA together. D. Chemical bonds between sugar groups and phosphate groups hold the two strands of DNA together.
Answer:
The correct answer is: B) Hydrogen bonds between the base pairs hold the two strands of DNA together.
Explanation:
The structure of the DNA molecule is given by two strands that are antiparallel and form a double helix. These two strands are held together by the hydrogen bonds that form between the nitrogenous base pairs that are located in the inside of the structure. Meanwhile, the sugar-phosphate backbones of the DNA are located on the outside.
Nitrogenous bases only pair with their complementary bases, meaning that adenine bases pair with thymine bases, and guanine bases only pair with cytosine bases.
a rock of mass 12.5kg has a weight of 20n( newton) on the moon. what is the value for grv=avity on the moon?
Explanation:
F=ma
since gravity is the only force acting on it
F=mg where F is the force exerted on the body, m is the mass, and g is the gravity with units m/s^2
given that the mass is 12.5kg and the force is 20N
20=12.5g
divide both sides by 12.5
1.6=g
the gravity is 1.6 [tex]\frac{m}{ {s}^{2} } [/tex]
Thus, the gravity is 1.6m/s².
Given,
Mass: 12.5kg
Weight: 20n( newton)
F=ma, since gravity is the only force acting on it.
What is force?Force is defined as the push or pull on an object with mass which causes it to change its velocity.
F = mg whereas, F is the force exerted on the body, m is the mass, and g is the gravity with units m/s² given that the mass is 12.5kg and the force is 20N.
20N = 12.5g
then divide both sides by 12.5.
We get 1.6 = g
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The chemical reactions that cells use to acquire and use energy to live, grow an reproduce are called
Metabolism refers to all of the chemical reactions occurring within cells that allow them to acquire and use energy, categorized into catabolic and anabolic pathways. Catabolic reactions break down complex molecules, releasing energy, while anabolic reactions build complex molecules and require energy.
Explanation:The chemical reactions that cells use to acquire and use energy to live, grow, and reproduce are collectively called metabolism. Metabolism encompasses all of the biochemical processes that take place within cells, which can be broadly categorized into two main types: catabolic and anabolic pathways. Catabolic pathways are the metabolic reactions that break down complex molecules into simpler ones, releasing energy in the process. On the other hand, anabolic pathways construct complex molecules from simpler ones and require an input of energy. These metabolic pathways are part of a larger field known as bioenergetics, which is concerned with the flow of energy through biological systems. Overall, metabolism maintains the cell's energy balance through the interplay of catabolic and anabolic reactions.
Final answer:
Cellular metabolism refers to all the chemical reactions in cells that are essential for acquiring and utilizing energy needed for survival, growth, and reproduction. It includes both energy-releasing catabolic reactions and energy-consuming anabolic reactions, all of which are regulated by enzymes within the realm of bioenergetics.
Explanation:
Cellular metabolism is the term used to describe the collection of chemical reactions that occur within cells to acquire and use energy necessary for the cells to live, grow, and reproduce. This encompasses a wide array of processes that include both catabolic reactions, which break down molecules to release energy, and anabolic reactions, which build up complex molecules requiring energy. Under the umbrella of bioenergetics, these reactions are crucial for energy flow through living systems and are regulated by enzymes to ensure the cell can function properly.
Understanding cellular metabolism is essential because it is the biochemical basis of life for all organisms. Whether a cell is taking in nutrients, synthesizing new components, or mobilizing energy reserves, it is the metabolic reactions that make these life-sustaining activities possible. Overall, cellular metabolism is a dynamic network of interconnected chemical reactions that are fundamental to biological systems.
4.) Photosynthesis is often described as two series of reactions, the light dependent and the light-independent or Calvin cycle reactions. Describe all steps that occur in the light-dependent reactions, including raw materials, energy transfer, and products.
Answer:
photosynthesis is important in many helio-centered plants
Explanation:
The light-dependent reactions of photosynthesis convert sunlight into chemical energy within the thylakoid membranes, where water is split to oxygen, protons, and electrons, producing ATP and NADPH as energy carriers for the Calvin cycle.
Light-Dependent Reactions of Photosynthesis
These reactions take place within the thylakoid membranes of chloroplasts. When sunlight hits the chlorophyll and other pigments, it excites electrons that move through an electron transport chain. This process leads to the splitting of water molecules (H2O) into oxygen, protons, and electrons (photolysis). The protons contribute to a proton gradient that drives the synthesis of adenosine triphosphate (ATP) through chemiosmosis. Moreover, the excited electrons transfer from the water molecules to nicotine adenine dinucleotide phosphate (NADP+), forming NADPH. The crucial raw materials for these reactions are water and sunlight, resulting in the production of oxygen, ATP, and NADPH.
All these products are then used in the Calvin cycle, or the light-independent reactions, to convert carbon dioxide (CO2) into glucose, a process powered by the ATP and NADPH generated in the light-dependent reactions.
Seeds can grow into which of the following types of plants? A. Angiosperms and gymnosperms B. Angiosperms and ferns C. Gymnosperms and mosses D. Gymnosperms and liverwort
Angiosperms and gymnosperms that seed can grow.
Option: A
Explanation:
Angiosperms, that are also known as flowering plants, have “seeds” that are sealed off within an “ovary”, while gymnosperms do not have fruits or flowers and have uncovered seeds on the surface of leaves. Seeds of gymnosperms are often arranged as “cones”. The features and characteristics that distinguish angiosperms from gymnosperms are fruits, flowers, and “endosperm” in the seeds. Examples of “Angiosperms” are “monocots” like orchids, lilies, agaves, grasses and dicots like, peas, roses, sunflowers, maples and oaks. “Gymnosperm” examples include “non-flowering evergreen” trees like pine, fir and spruce.
some examples of lipids are cellulose and fiber. true or false
Answer:
Fast Facts: Lipids
A lipid is any biological molecule that is soluble in nonpolar solvents.Lipids include fats, waxes, fat-soluble vitamins, sterols, and glycerides.Biological functions of lipids include energy storage, cell membrane structural components, and signalingThere are many different types of lipids. Examples of common lipids include butter, vegetable oil, cholesterol and other steroids, waxes, phospholipids, and fat-soluble vitamins. The common characteristic of all of these compounds is that they are essentially insoluble in water yet soluble in one or more organic solvents.
False
Which sequence represents a cross section of the bilayer
A hydrophilic head, hydrophobic tail, hydrophobic tail, hydrophilic head
B hydrophobic tail, hydrophilic head, hydrophobic tail, hydrophilic head
c hydrophobic head, hydrophilic tail. hydrophilic tail, hydrophobic head
D hydrophilic tail, hydrophobic head, hydrophobic head, hydrophilic tail
The answer you are looking for is a
Distinctions between Earth’s crust and mantle are based on:
a. rock types
b. chemistry
c. seismicity
d. all of the above
Answer:
D. All of the above
Explanation:
This is the correct answer because you'd have to experiment to find out more about the Earth's crut and mantle and all these options prove just that :)
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The first generation of offspring from the cross of two parents is called the
A.F1 generation
B.F2 generation
C.short generation
D.P generation
Answer:
Option A, F1 generation
Explanation:
The first cross between any two parents resulting into a set of offspring with similar or varied genotype is known as the first generation. First generation is represented by F1
However, when the offspring produced in the first generation are crossed among themselves to produce offspring with similar or varied genotype , then this cross is known as the second generation. Second generation is represented by F2
Hence, option A is correct
.In conclusion, the answer to the question is A. F1 generation.
The first generation of offspring from the cross of two parents is called the F1 generation. A generation is a group of individuals born and living around the same time, while offspring refers to the progeny of an animal or plant.The F1 generation is formed when two individuals from different but similar strains, breeds, or subspecies mate with each other. When two true-breeding individuals with contrasting traits are crossed, the offspring will only have the phenotype of the parent with the dominant trait, while the recessive trait will be hidden in the genotype but will reappear in the F2 generation in a 3:1 ratio.In conclusion, the answer to the question is A. F1 generation.
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The inside of a membrane bilayer is
Answer:
hydrophobic
Explanation:
the hydrophobic ends which is "water fearing" faces inwards so that it does not interact with the water or liquid outside the membrane
Answer:
The correct answer will be- hydrophobic
Explanation:
The plasma membrane of a cell is composed of lipids commonly called phospholipids.
The phospholipid structure contains a hydrophilic head and a hydrophobic tail.The phospholipids in a plasma membrane are arranged in two layers called bilayer.
Bilayer contains the hydrophilic head faces the external environment whereas the hydrophobic tail composed of fatty acids is present inside and provide hydrophobic character to the layer.
Thus, inside the membrane is hydrophobic.
Which other technology would most directly help the survival of such an expanding population
Answer:
A system for growing food without using much land
Explanation:
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The given question is incomplete. The complete question is.
A country that has been relatively poor is starting to become wealthier. This has brought many people into the capital city, causing the population to grow very rapidly. Many new apartment buildings, as well as water and waste management systems, are being constructed to meet their living needs.
Which other technology would be a priority for the survival of such an expanding population?
A. Better communication systems
B. Structures for growing food in or near cities
C. Modern recreational facilities
D. New methods of public transportation
Answer: Option B
Explanation:
The technology that an help in the surviving of the expanding population is structure that can grow food in or near the cities.
The basic needs of the human beings is food, space and other necessary resources.
These resources cannot be avoided and needs to be fulfilled. The lack of space and other resources is completed excluding the food.
So, there is a need of structure which can grow food in the cities or somewhere else.
The following drug reference book is written specifically for medical transcriptionists by a certified
medical transcriptionist and lists generic and brand name drugs, as well as how they are used and
prescribed
Answer: The correct answer is the following book:
________________________________________________
→ the "Saunders Pharmaceutical Drug Book " .
________________________________________________
Hope this is helpful to you!
Wishing you the best!
________________________________________________
Answer:
the "Saunders Pharmaceutical Drug Book " .
This book lets to look up more than 28,000 brand-name and generic drugs. It lets the localitation of the drug details a person needs, such as a correct spelling and capitalization, corresponding uses, cross references of brand names to generics, and the usual methods of administration.
The study of DNA provides evidence that all living things are related through
evolution by showing that all species
Answer:
it's d has the same genes
The answer is option B - The study of DNA provides evidence that all living things are related through evolution by showing that all species read the genetic code in the same way.
All species read the genetic code in the same way, indicating a common ancestry and supporting the theory of evolution.
The study of DNA provides substantial evidence that all species are related through evolution by showing that all species read the genetic code in the same way. This is apparent from the universal use of the same set of genetic instructions across different forms of life, demonstrating a common ancestry. By comparing genetic sequences, scientists have mapped out the relationships among various species, constructing what is known as the "tree of life."
This tool illustrates the connections between organisms, with many sharing significant genetic traits and DNA sequences, such as humans and chimpanzees sharing about 98% of their genes, indicating a recent common ancestor.