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Related Questions
In saltwater, the water that surrounds a fish has a higher concentration of dissolved salts than is found in the fish's body cells. Which two methods allow the fish to maintain water balance? A. Pumping out salt through the gills B. Absorbing water into the body by osmosis C. Releasing only a little water in urine D. Taking in salts via food
Answers
The two methods that allow fish to maintain water balance in saltwater are pumping out salt through the gills and absorbing water into the body by osmosis.
In saltwater, the concentration of dissolved salts is higher in the surrounding water than in the fish's body cells. To maintain water balance, fish have developed two main methods:
1. Pumping out salt through the gills: Fish possess specialized cells in their gills that actively pump out excess salts from their bodies. This process helps maintain a lower salt concentration within the fish's body, preventing dehydration and maintaining water balance.
2. Absorbing water into the body by osmosis: Osmosis is the movement of water from an area of lower solute concentration to an area of higher solute concentration through a semi-permeable membrane. Fish have a protective layer of skin that allows water to be absorbed into their bodies while preventing the entry of excessive salts.
By absorbing water through their skin, fish replenish the water lost to the surrounding saltwater, helping to maintain their internal water balance.
These two mechanisms work together to enable fish to survive in saltwater environments. By actively pumping out salts and absorbing water, fish can regulate their internal salt concentration and prevent dehydration, ensuring their overall water balance is maintained.
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A lysosome is the organelle inside of a cell that is responsible
for digestion. The lysosome performs the same basic function
as which system in animals?
Digestive System
Circulatory System
Nervous System
Respiratory System
Answers
Hope this helps!
Figure F Based on the angle of the femur (Figure F) what can we say about the organism it belongs to. -The organism is an ape. -The organism is a tripod. -The organism is a biped. -The organism is a quadruped.
Answers
Based on the angle of the femur, the organism is biped.
What is biped organism?Bipedalism is a type of terrestrial locomotion in which an organism moves using its two rear limbs or legs. A biped is an animal or machine that moves on two legs.A biped seems to be an animal that walks on two legs and has two feet. Bipeds include humans. The majority of animals are not bipeds, but mammals that are include kangaroos and some primates. The ostrich, a massive, flightless bird, is the fastest living biped, and bears and lizards are also bipedal.Major morphological features of bipedalism include: a presence of such a bicondylar angle, or valgus knee, a more inferiorly placed foramen magnum; the presence of a reduced or non-opposable big toe; and a higher foramen magnum.To learn more about biped organisms refer to :
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Where is Earth's crust the thickest?
a on top of a mountain (continental crust)
b under the ocean (oceanic crust)
c at the equator (both oceanic and continental crust)
Answers
Answer:
Continental crust
Explanation:
3.2
Describe the tendency of population movement in South Africa over
the same 50-year period.
3.1.3 What influence does this population shift have on agriculture?
Answers
Overall, the population shift in South Africa has had a negative impact on agriculture, leading to a decline in the sector and decreased food security for rural communities.
What is population?Population refers to the total number of individuals of a particular species or group living in a specific area or region. In the context of human populations, it refers to the number of people living in a particular geographic area or country. Population can also refer to subgroups within a larger population, such as age groups, ethnic or racial groups, or socioeconomic groups. Population can be measured and analyzed in various ways, including through demographic data such as birth and death rates, migration patterns, and population density.
Here,
Over the past 50 years, there has been a significant population shift in South Africa, with many people moving from rural areas to urban areas in search of better economic opportunities, education, and healthcare. This trend is known as urbanization and is a common phenomenon in many developing countries.
As people move from rural areas to urban areas, the population density in urban areas increases, while rural areas become less populated. This population shift has had a significant impact on agriculture in South Africa. As more people move to cities, there is less demand for agricultural products, leading to a decline in the agricultural sector. This has resulted in the loss of agricultural land, reduced productivity, and decreased food security for rural communities.
In addition, the population shift has also led to changes in land use. As urban areas expand, they often encroach on agricultural land, leading to land fragmentation and reduced agricultural productivity. This can also lead to conflicts between urban and rural communities over land use and resource allocation.
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(b) The magnification of the cress root in the image above is x 200.
There are 1000 micrometres (um) in a millimetre (mm).
Calculate the real length of the root hair, X.
Give your answer in micrometres (μm).
Real length X =
μm
Answers
So the real length of the root hair, X, is 5X micrometers (μm).
How do we calculate?We have :
factor = 200
Length of the root hair in the image = X
The magnification factor is described as the ratio of the image size to the actual size. In this case, the image size is X and the actual size is X divided by the magnification factor.
Actual size = Image size / Magnification factor
Actual size (in μm) = (Image size / Magnification factor) * 1000
Actual size (in μm) = (X / 200) * 1000
Actual size (in μm) = 5X
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What happened to the marine life due to oil spill
Answers
Answer:
animals died and water was contaminated
Explanation:fish are meant to swim in water not oil
Make a punnett square to show the predicted results from a cross between a person who is heterozygous for curly hair and one that is homozygous recessive for that trait. Use the letter H to represent the genotypes.
Answer all of the following questions using the results from your cross. Type in the box below.
What are the possible combinations of alleles?
If a child is homozygous recessive what is his phenotype?
What is the probability of a child with a homozygous recessive trait?
With a heterozygous recessive?
Answers
The probability of the child with homozygous recessive trait and heterozygous genotype from a cross between s homozygous recessive parent and a heterozygous parent is 1:2 or 50%.
What is Punnett square?The Punnett square is a square diagram which is used to predict the genotype of a particular cross or a breeding experiment.
Curly hair is considered as a dominant gene hair type while straight hair is considered as recessive allele. The allele for curly hair is represented by "H" and the allele for straight hair is represented by "h".
The Punnett square for the cross between a heterozygous curly hair parent (Hh) and a homozygous recessive parent (hh) is attached with the answer. The possible combinations are represented in the answer.
The probability of a child with a homozygous recessive trait is 1:2 or 50% and the probability of a child with heterozygous child is 1:2 or 50%.
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Describe chemical digestion of proteins in the stomach
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In the stomach, proteins are broken down into smaller molecules by hydrochloric acid and an enzyme called pepsin. The hydrochloric acid creates an acidic environment in the stomach, which helps to denature the proteins and make them more accessible to the pepsin enzyme. Pepsin then breaks down the proteins into smaller peptides and amino acids, which can be absorbed into the bloodstream through the small intestine.
SOMEONE PLEASE HELP NE ITS DUE TODAY!!!
In 1882, Theodor W. Engelmann carried out an experiment using filamentous green algae, oxygen-requiring bacteria, a light source, and a prism. He placed the algae and bacteria together in liquid medium in a glass tank. Then he placed the prism next to the tank and the light source a bit farther away. When he directed the light onto the prism, it dispersed into its component wavelengths as shown in the diagram. He found that if one filamentous alga lined up along the distribution of wavelengths of light coming into the tank, the bacteria tended to congregate in specific areas around the algal cell. These areas correlated to the wavelengths of light striking the algal cell. Pose a scientific question that Engelmann might have asked about an algal cell after making his observations from this experiment.
Answers
Answer: What other changes occur in the algal cell as a result of the bacteria's movement? or Why does the bacteria in an algal cell respond to the wavelengths of light?
Explanation:
PLS HELPP
Which statement is correct about Star A and Star B?
O They have the same color.
They have different brightness.
They have different brightness but the same colors.
They have the same brightness but different colors.
Answers
Answer:c
Explanation:
do the math
The colors are the same, but the brightness varies.Since giants have a lower surface temperature than dwarfs, they appear yellow or orange, while dwarfs are white and blue as the temperature rise of a star increases.
Which of the following is true about stars?Option A is the appropriate response to the posed question:The temperature of stars varies tremendously.The temperatures of the stars' celestial bodies vary.
Are the stars all the same size, color, or brightness?Moreover, there are different sizes and brightnesses of stars.Typically, larger stars glow brighter than smaller ones.Hence, the size and distance of a star from us determine how bright it looks in the night sky.
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Which statement accurately describes the "savanna" biome? This biome features tropical grasslands and is located near the equator. This biome features high levels of biodiversity and is located near the equator. This biome features a level of permafrost and a short growing season during the winter. This biome features forests and grasslands that go dormant during the winter.
Answers
Answer:
This biome features forests and grasslands that go dormant during the winter.
This biome features high levels of biodiversity and is located near the equator.
This biome features a level of permafrost and a short growing season during the winter.
This biome features tropical grasslands and is located near the equator.
Hemochromatosis is an inherited disease caused by recessive allele. If a woman and her husband, who are both carriers, have three children, what is the probability of all three children having a normal phenotype
Answers
Answer:
27⁄64
Explanation:
A recessive disease is expressed only when an individual carries two copies of the recessive allele (i.e., individuals must be recessive homo-zygous to suffer from the disease). In this case, both parents are carriers for hemochromatosis, i.e., both are heterozygotes carrying the defective allele, thereby the probability of having a child with a normal 'dominant' phenotype is 3/4, i.e., 3/4 individuals are expected to have an A_ genotype (1/2 AA + 1/4 Aa = 3/4), and 1/4 individuals are expected to have an aa genotype (where 'A' is the dominant allele and 'a' is the recessive allele associated with hemochromatosis). In consequence, the probability of having three children with the normal phenotype is 3/4 x 3/4 x 3/4 = 27/64.
Give long answers to the following questions. [3x8=24] 9. Mention characteristic features of family Solanaceae with floral formula and floral diagram. Give two examples (Scientific names) of medicinally important [4+1+2+1] plant species of this family.
Answers
The plants exhibit pharmacological significance due to their alkaloid content, which can have potent effects on the nervous system and various bodily functions.
Family Solanaceae, commonly known as the nightshade family, is a diverse group of flowering plants characterized by several key features. The floral formula of Solanaceae is typically represented as (5) K (5) C(5) A(2+2) G(2), indicating five sepals, five petals, five fused stamens (with two longer and three shorter ones), and a superior ovary composed of two fused carpels. The floral diagram represents a radial symmetry with overlapping sepals and petals, and the stamens and pistil positioned in the center.
Solanaceae encompasses many medicinally important plant species. Two notable examples are:
Atropa belladonna: Also known as deadly nightshade, Atropa belladonna contains alkaloids such as atropine and scopolamine, which have various medical uses. These compounds have anticholinergic properties and are used in medicine to dilate pupils, treat gastrointestinal disorders, and relieve bronchial spasms.
Datura stramonium: Commonly called jimsonweed or thorn apple, Datura stramonium contains alkaloids like scopolamine and hyoscyamine. It is used for its antispasmodic and bronchodilatory properties and has been employed in traditional medicine to relieve asthma symptoms and treat skin conditions.
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Organisms striving for the same resources in the same place is an example of -. O Commesalism O Parasitism O Cooperation O Competition
Answers
A biological interaction known as competition occurs when organisms of the same species or other species that rely on the same resources in the same environment come into contact.
What is it that organisms are vying for in the same location?Organisms that compete for the same resources in the same environment are in a relationship. Food, water, or space are some examples of the resources. Two distinct categories of competition exist: Members of the same species compete with one another within their own species.
When two organisms of the same kind are present in the same place at the same time, what can happen?A population is a grouping of individuals who are local inhabitants, members of the same species, and engaged in regular interbreeding.
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identify the difference between the use of depth filters and membrane filters in sterilizing fluids.
Answers
The difference between the use of depth filters and membrane filters in sterilizing fluids is that membrаne filters hаve smаller pores thаn depth filters, but depth filters hаve complex pаssаges thаt retаin microbes while letting the fluid through. Both methods are efficient.
What are the depth filters and the membrane filters?Depth filters аre mаde of fibrous mediа аnd do not hаve defined pore size or structure. Pаrticles pаssing through depth filters become entrаpped or аdsorbed due to the tortuous pаth they must trаvel to exit the filter.
In contrаst to depth filters, membrаne filters hаve а defined pore size аnd structure аnd more stringently prevent pаrticles аbove а certаin size from pаssing through the mаteriаl. Becаuse we typicаlly wаnt to remove 100% of pаrticles аbove а specific size in the lаb, we typicаlly use membrаne filters.
Your question is incomplete, but most probably your options were
A. Depth filters have much smaller pores than membrane filters, and are therefore far more efficient than membrane filters.
B. Membrane filters have smaller pores than depth filters, but depth filters have complex passages that retain microbes while letting the fluid through. Both methods are efficient.
C. These two methods of filtration cannot be compared because they are vastly different in their mechanisms of action in sterilizing fluids.
D. Depth filters have very large pores and are an older and much less efficient way of removing microbes from fluids than membrane filters.
E. Membrane filters have much smaller pores than depth filters, and are therefore far more efficient than depth filters.
Thus, the correct option is B.
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____ is the process of water vapor turning back into liquid water, with the best example being those big, fluffy clouds floating over your head. And when the water droplets in clouds combine, they become heavy enough to form raindrops to rain down onto your head.
Answers
Answer:
Your answer is condensation.
what animal kingdoms were divided
Answers
Answer:
The scheme most often used currently divides all living organisms into five kingdoms: Monera (bacteria), Protista, Fungi, Plantae, and Animalia. This coexisted with a scheme dividing life into two main divisions: the Prokaryotae (bacteria, etc.) and the Eukaryotae (animals, plants, fungi, and protists).
According to cell theory, which of the following would be composed of cells?
water
rock
air
insect
Answers
Answer:
insect
Explanation:
A white woman says she is not racist but avoids sitting near Black individuals. She has
A.high explicit racism, low implicit racism
B.high explicit racism, high implicit racism
C.low explicit racism, low implicit racism
D.low explicit racism, high implicit racis
Answers
Please make this the brainliest answer
Why are cells called the building blocks of an organism?
O They are visible to the naked eye.
O They are made from nonliving materials.
O They are the basic unit of life.
They are able to generate new cells.
Answers
Answer:
They are the basic unit of life
Explanation:
Everything is made of cells. Without them, all living things would not be able to function, survive, or exist. This is because cells are what separates living organisms from non-living objects.
Answer:
C
Explanation:
I need help with this:(
Answers
Answer:
Water temperature is a key factor affecting phytoplankton bloom dynamics in shallow productive coastal waters and could become crucial with future global warming by modifying bloom phenology and changing phytoplankton community structure, in turn affecting the entire food web and ecosystem services.
Please hurry. Which of the following examples includes only chemical changes that occur in the digestive process?
A: Absorption of nutrients by villi in the small intestines
B: Chewing and swallowing food
C:Recycling of water from dissolved food back into the body
D: Reaction of saliva, stomach acid, bile, and pancreatic juices with food
Answers
The example that includes only chemical changes that occur in the digestive process is the reaction of saliva, stomach acid, bile, and pancreatic juices with food. Option D.
What are chemical changes?Chemical changes refer to changes to the chemical properties of substances. In biological reactions, these substances are referred to as reactants.
Chemical changes are different from physical changes. In physical changes, only the physical properties of substances are altered while their chemical properties remain intact.
When a substance changes chemically, its physical properties most often change along. However, this is not in all cases.
Thus, looking at the examples given, their classification into either physical or chemical changes is as follows:
Absorption of nutrients by villi in the small intestines: physical changeChewing and swallowing food: physical changeRecycling of water from dissolved food back into the body: physical changeThe reaction of saliva, stomach acid, bile, and pancreatic juices with food.When saliva, stomach acid, bile, and pancreatic juices react with food, the chemical properties of food change because the enzymes convert different components of food from one form to another as part of the process of digestion.
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What is artificial selection?
Answers
Answer:
D. when humans breed an animal for a certain trait
Explanation:
In order for something to be defined as artificial selection it requires human interference, D is the only answer where humans are mentioned; Therefore it's the correct answer and a example of artificial selection
Answer:
The answer to your question would be d
Explanation:
because artifical is humans picking what happens. and natural would be nature picking the traits
im freaking out how can i hear my thoughts if i cant see them hear them or read them? WHAT IS THINKING?!?! am i over reacting? HELP ME!
Answers
Answer:
yes, you're overreacting. -w-
Explanation:
Bacteria are unicellular?
-False
-True
Answers
Answer:
True
Explanation:
Answer:
True
Explanation:
I hope this helps.
True or false: Hormones of the body can influence thought but thought can also influence
the hormones of the body.
True
O False
Answers
Answer:
TRUE
Explanation:
Strong sugar solution A Pin holding potato .Potato Pure water -Beaker 1.4.1 State TWO differences between the process investigated in the diagram above and diffusion. 1.4.2 Give ONE planning step that should be considered prior to this Investigation. 1.4.3 Explain the importance of the potato in this investigation.
Answers
1.4.1 Two differences between the process investigated in the diagram above and diffusion:
In the diagram, the process being investigated involves osmosis, not diffusion. Diffusion refers to the movement of particles from an area of higher concentration to an area of lower concentration, while osmosis specifically refers to the movement of water molecules across a semi-permeable membrane.In osmosis, the movement of water molecules occurs in response to the concentration gradient of solute particles, whereas in diffusion, the movement of particles is driven solely by the concentration gradient of the particles themselves.1.4.2 One planning step that should be considered prior to this investigation:
It is important to establish a clear and measurable objective for the investigation. This could involve defining the specific research question or hypothesis that the investigation aims to address. Having a well-defined objective will help guide the experimental design and ensure that relevant data is collected.1.4.3 The importance of the potato in this investigation:
The potato is important in this investigation because it serves as the object of study or the sample material through which osmosis is observed. The potato, being a plant tissue, contains cells with semi-permeable membranes that allow the passage of water molecules but restrict the movement of solute particles. By placing the potato in the strong sugar solution and observing the changes in its weight or texture, one can study the process of osmosis and the effects of water movement across the potato cells. The potato serves as a model system to understand the principles and mechanisms of osmosis in biological systems.for similar questions on sugar solution.
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A Can of tomatoes has a radius of 6 cm in a height of 10 cm. What is the approximate volume of the can
Answers
Answer:
1130.4 cm³
Explanation:
The formula when calculating the volume of a cylinder is pi × radius² × height
3.14 x 6²x 10
When simplified it will be,
31.4 x 36 = 1130.4
What type of rock forms when magma cools?
A. Limestone
B. Metamorphic
C. Sedimentary
D. Igneous
Answers
Answer:
Extrusive Igneous Rocks the answer, meaning its option D. Good luck