A planarian is an example of a triploblast and is also an acoelomate as it does not have a coelom but still has a gut cavity. correct answer is triploblast; acoelomate.
A planarian is an example of a triploblast, which is an organism that has three primary germ layers: ectoderm, mesoderm, and endoderm. In the context of body cavity development, planarians are classified as acoelomates because they do not have a coelom. Their mesoderm is completely filled with tissue, but they still have a gut cavity. Animals such as planarians that belong to the phylum Platyhelminthes exhibit this trait, distinguishing them from eucoelomates, which have a true coelom, and from pseudocoelomates, which have a body cavity that is not completely lined by mesoderm. correct answer is triploblast; acoelomate.
Match the signs of development with the appropriate trimester.
Fingerprints have developed.
The fetus can hear and see.
The heart beats for the first time.
Nerve cells have developed.
The sex can be determined.
Fat begins to develop.
The fetus starts to move
Signs of fetal development like fingerprints and the ability to hear are associated with the second trimester, while the first heartbeat occurs in the first trimester. Determination of sex is possible between 9-12 weeks, and significant fat development takes place in the third trimester. Early movement starts as soon as the sixth week.
Explanation:To match the signs of fetal development with the appropriate trimester:
Fingerprints have developed: This occurs in the second trimester, as fingers and toes are fully developed around the 16-week mark.The fetus can hear and see: Significant hearing development happens between weeks 16 and 26, while vision development continues throughout pregnancy, with light detection capability emerging later.The heart beats for the first time: This critical stage happens in the first trimester, at about six weeks.Nerve cells have developed: Nerve development is ongoing, but major brain structures are in place by the eighth week, with further sensory development at weeks 13-16.The sex can be determined: Differentiation of sex organs begins to occur between 9-12 weeks, allowing for determination of sex.Fat begins to develop: This occurs in the third trimester when there's rapid body growth and a substantial increase in body fat.The fetus starts to move: Uncontrolled movements begin as early as the sixth week, with more forceful movements occurring later on.What does nitrogen fixation accomplish?
O
A. It allows bacteria to use nitrogen to grow.
O
B. It allows respiration to occur.
O
C CU
C. It allows plants to use nitrogen to grow.
O
D. It allows industry to mass-produce nitrogen.
Answer:
D. it allows plants to use nitrogen to grow
It allows plants to use nitrogen to grow. Therefore, option (C) is correct.
Nitrogen fixation turns atmospheric nitrogen gas (N2) into a form plants can use. Nitrogen-fixing bacteria, either soil-dwelling or symbiotic with plants, do this function.
Nitrogen fixation converts atmospheric nitrogen into ammonium ([tex]NH^{4+}[/tex]) or nitrate ([tex]NO^{3-}[/tex]) ions, which plants need to flourish. Nitrogen is necessary for plant protein, nucleic acid, and other synthesis. Plants would suffer nutritional deficits without fixed nitrogen.
Nitrogen fixation helps microorganisms develop by providing useable nitrogen for the ecosystem. Nitrogen fixation supports the nitrogen cycle, soil fertility, and agriculture by lowering the demand for synthetic nitrogen fertilizers. Therefore, option (C) is correct.
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4. A man who does not have freckles marries a woman who is heterozygous for freckles.
a. What are the two genotypes? _________________
b. % of offspring that will be homozygous dominant ___________
c. % of offspring that will be heterozygous ___________
d. % of offspring that will be homozygous recessive ___________
e. % of offspring that will have freckles ___________
f. % of offspring that will not have freckles__________
Answer:
a. Ff, ff
b. 0%
c. 50%
d. 50%
e. 50%
f. 50%
Explanation:
Answer: A) Ff and ff B) 0% C) 50% D) 50% E) 50% F) 50%
Explanation: Look at this punnet square
F | f
f|Ff|ff
f|Ff|ff
can mutations occur in both DNA and RNA nucleic acids ?
Answer:
Yes
Explanation:
All mutations will be passed onto new cells through DNA replication, and all RNA made from that DNA will also have the mutation. If the mutation occurs in sperm or egg cells, those mutations will also be passed on to the organism's offspring.
Yes, both DNA and RNA nucleic acids may experience mutations. Mutations are modifications to the nucleotide sequence in a DNA or RNA molecule. Errors in the replication process, environmental variables, or other outside forces may be at blame for these modifications.
Both the coding sequence and the non-coding portions of DNA are susceptible to mutation. The structure and function of the protein can be impacted by variations in the amino acid sequence caused by mutations in the protein's coding sequence.
Changes in the gene's expression may be caused by mutations in the non-coding areas. Both the coding sequence and the non-coding portions of RNA are susceptible to mutation. Changes in the amino acid sequence of the protein can result from mutations in the coding sequence.
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A boy exerts an average force of 65 n when he lifts a box 1.2 meters. How much work does he do?
Answer:
78 J
Explanation:
Work done = Force x distance
Work done = 65 x 1.2
Work done = 78 J
The work done by the boy is 78 J.
The given parameters;
force applied by the boy, F = 65 Ndistance traveled by the load, d = 1.2 mThe work done by the boy is the product of the applied force and the distance through the load is moved.
The work done by the boy is calculated as;
Work-done = Force x distance
Work-done =65 x 1.2
Work-done = 78 J.
Thus, the work done by the boy is 78 J.
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(PLSSS DO THIS ILL MARK BRAINLESS) Matter on Earth constantly cycles between the different reservoirs of the Earth system. As matter cycles through the Earth's reservoirs, what effect does this have on the total amount of matter on Earth?
A.
The total amount of matter on Earth constantly decreases.
B.
The total amount of matter on Earth is always changing.
C.
The total amount of matter on Earth constantly increases.
D.
The total amount of matter on Earth remains constant.
Answer:
The answer is D. The total amount of matter on Earth remains constant
Explanation:
I just did this and its the correct outcome :/ Hope it helps
Final answer:
The total amount of matter on Earth remains constant as it cycles through different environmental reservoirs, adhering to the law of conservation of matter.
Explanation:
Matter on Earth cycles through different reservoirs, such as the atmosphere, biosphere, hydrosphere, and geosphere. This cycling involves processes like photosynthesis, respiration, and decomposition. Despite the complex transformations and exchanges, the total amount of matter remains constant due to the law of conservation of matter. This principle states that matter is neither created nor destroyed within a closed system. Consequently, as matter cycles through the Earth's reservoirs, the effect on the total amount of matter is that it remains constant.
The correct answer to the question is:
D. The total amount of matter on Earth remains constant.Which of India’s regions is the most highly populated?
Answer:
Ganges River valley is most populated.
Explanation:
has the highest population.
Answer:
North India
Explanation:
Organisms of two different species interact. One organism is not significantly affected, while the other benefits.
Which of the following describe this interaction?
Answer:
commensalism
Explanation:
one animal benefits while the other is not harmed or affected in any way
Human development begins with a(n)
which is created when
join and thdas
first cell division takes place
Answer:
Zygote, the nucleus of male and female gametes join, mitosis
Explanation:
The human belongs to the animal kingdom which begins their life when the male and female gametes fuse through a process called Fertilization.
The process of fertilization involves the fusion of the nucleus or the genetic material of the male and female gametes. The process forms a diploid cellular structure called the zygote. After the formation of the zygote, the first cell division or mitosis produces the embryo which develops into an organism.
Answer:
embryo and gametes
Which factor increases with increased biodiversity?
O
O
A. Species extinction
B. Ecosystem stability
O
C. Artificial selection
O
D. Genetic drift
Answer:
Ecosystem Stability
Explanation:
Which activities are examples of science challenging society? Check all that apply
-mining of coal for energy
-cloning for organ transplants
-Creating laws and regulations
-researching use of stem-cells
-using electricity
the answer is all except
creating laws and regulation
Answer:
1, 2, 4, 5
Explanation:
18. There is a liquid capsule inside a cup full of liquid. The cup full of liquid has salt yn it and the
liquid capsule has no salt in it. In which direction will the solvent flow?
A From the capsule to the larger cup
B. The salt does not have to move
C. Equally between the capsule and the cup
- D. From the larger cup to the capsule
What year did scientists announce they had broken the DNA code of humans?
Answer:
The Human Genome Project (HGP) was declared complete in April 2003.
How could research on how genes control traits in orchids benefit our understanding of the human genome?
Answer:
All life is encoded through DNA. Every plant and animal has chromosomes in which genes that code for proteins are responsible for the organism's traits. For all species, the structure of core dogma is essentially the same, and studying the principle on orchids would also lead to the understanding of the human genome.
Research on how genes control traits in orchids benefit our understanding of the human genome as these give the idea of the genome. Traits are controlled by genes thus the various traits that are carried out by will be studied by the study of genes.
What is a gene ?It is the unit of inheritance which is carried out by the hereditary units that will be carried to the offspring from parents.
A study of genes will be helpful ion order to get the idea of the genome and the various characteristics are identified through the genetic studies and the various expressions are controlled by the genetic expressions.
The transmission of genes control the various traits from parents to child where the characteristics of the various traits carried by the children is passed on to child through the passing from parents.
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What kinds of plants, haploid or diploid, are the mosses that can be seen coating tree
trunks, rocks, and other surfaces?
Answer:
Haploid plants would grow on surfaces like trees and rocks.
Which of these can form above a limestone cave?
a. Earthquake
b. Sinkhole
C. Mudslide
Answer:
Sinkhole
Explanation:
A sinkhole can appear near areas that have soft minerals, including limestone.
Why is the tidal range smaller duringa Neap tide than it is during a Spring Tide?
Answer:
Spring tides have higher high tides and lower low tides whereas neap tides have lower high tides and higher low tides. Hence, the range (difference in water level between high and low tide) is much larger in a spring tide than in a low tide.
Explanation:
Answer:
When this happens, the bulge of the ocean caused by the sun partially cancels out the bulge of the ocean caused by the moon. This produces moderate tides known as neap tides, meaning that high tides are a little lower and low tides are a little higher than average.
Explanation:
Hope this helps
please give me brainliest if possible
_____ pressure is associated with rising air, clouds, and possible precipitation.
Label the diagram of the sun
Diagram of the sun.
The sun is the old star in the solar system that is able of generating light and heat that reaches all corners of the universe. The sun is arranged into various layers such as those of the sub-layers are the photosphere, chromosphere, and other layers.
Thus the answer is 1. chromosphere, 2. photosphere, 3. inner core, 4. corona, 6. Prominence.
The layers of the sun are arranged and they refer to the way the sun is made and composed. As the sun is a mix of hydrogen and helium gases that are made from the fusion and fission of atoms. The layer helps the sun to be a star.Learn more about the diagram of the sun.
brainly.com/question/22756425.
The Sun comprises a core with nuclear fusion, a radiative zone for energy transport, a convection zone with plasma currents, a visible photosphere, a reddish chromosphere, a transition region, and a hot outer corona extending into space.
Core: At the Sun's core, temperatures and pressures are extremely high, allowing nuclear fusion to occur. Hydrogen atoms fuse to form helium, releasing an enormous amount of energy in the process.
Radiative Zone: Energy produced in the core is transported outward through the radiative zone. Photons generated in the core travel through this zone, bouncing between particles, gradually making their way to the surface.
Photosphere: The Sun's visible surface is the photosphere. This is where most of the Sun's energy is emitted as light and heat. Sunspots, which are cooler and darker areas, can be observed on the photosphere.
Chromosphere: Above the photosphere lies the chromosphere, a layer of the Sun's atmosphere. It is characterized by a reddish glow and is visible during solar eclipses.
Corona: The outermost layer of the Sun's atmosphere is the corona. It is composed of extremely hot, ionized gas, and it extends into space. The corona is visible during a solar eclipse.
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Everything in space moves except the sun. True False
Answer:
true
i think not sure
Explanation:
Answer:
true!
Explanation:
Everything in the Universe is in motion because forces exist in the Universe. The gravitational force and the electromagnetic force ensure large objects are in motion while the weak and strong nuclear forces ensure the quantum world is constantly in motion. If there were no forces, there would be no motion.
A disease causes a plant to produce big bright flowers that are infertile. overtime the disease affects fewer plants. what likely occurred in this population?
Answer: I think that the dieses went away.
which of the following is a type body language
What does the term endothermic refer to?
Answer:
Explanation:
The definition of endothermic is a chemical reaction that is accompanied by the absorption of heat, or an organism that generates heat to maintain its temperature. A chemical reaction that works only if heat is absorbed is an example of a reaction that would be described as endothermic.
Answer: The word endothermic describes a process or reaction in which the system absorbs energy from its surroundings in the form of heat.
Explanation:
Opposed to exothermic (the process in which a chemical change that is accompanied by a liberation of heat occurs), an endothermic process absorbs energy from its surroundings in the form of heat.
The gases of our air are colored and have an odor. *
O
True
O
False
Answer:
true
Explanation:
Gases, like other forms of matter, have physical properties such as color, odor, and taste. In general, gases tend to be colorless and odorless, although some important exceptions exist.
What is the reason that human skin cells frequently undergo mitosis?
Answer:
Keratin
Explanation:
The epidermis cells are constantly undergoing mitosis so that the outer dead cells containing keratin are rapidly replaced as they fall off, which occurs after so many days.
Which organisms are tertiary consumers? Check all
that apply
penguin
cod
elephant seal
killer whale
krill
squid
leopard seal
zooplankton
Answer
1) Penguin
3) Elephant seal
4) Killer whale
7) Leopard seal
Explanation:
Answer:
A,C,D,G
Explanation:
These are the Tertiary consumers, the rest of the animals are not tertiary consumers.
Show all of your work
2. In humans, albinism(a) is recessive to normal skin pigmentation(A). A man with normal skin pigmentation whose mother was an albino, marries an albino woman. Predict the phenotype ratio of their children.
Answer:
if the man's genotype was Aa then the phenotype of their children would be: 50% albino and 50% normal skin pigmentation.
if the man's genotype was AA then the phenotype of their children would be: 100% normal skin pigmentation.
Explanation:
I almost completely doubt that the answer is the second one since the mom was albino then he has to have the trait in him some where and so his genotype would be Aa. However, I gave you both answers just in case but trust me if u choose one I suggest the first one (50% 50%) because it is the most accurate considering his mom was albino.
A female rabbit had eight babies. Six of the babies were black and two were white. In rabbits, the allele for black fur (B) is dominant to the allele for white fur (b). What genotype in the mother and father rabbits could produce this outcome in the phenotypes of their offspring? Write a scientific explanation that explains the genotype of the female and male rabbits.
The dad is this case would either have a BB or a Bb genotype and the mother would have a bb genotype. Their babies that are white would be bb and black would be Bb.
What is the main source of genes of every rabbit baby?Every baby which gets one gene from its mother and the another from its father. These white babies will have received one b allele from their mother and one b allele from the father and the black babies might have gotten a b allelle from the mom and a B from their father.
The color between the two alleles A of the chromosomes are identical, while the color alleles B of the two chromosomes is different, the one that is a high appears darker and the one that is below appears clearer, so it means they are different, so they are heterozygous. An allele is one of the different forms that can take the same gene. Alleles occupy the same position (locus) on homologous chromosomes.
Therefore, The dad is this case would either have a BB or a Bb genotype and the mother would have a bb genotype. Their babies that are white would be bb and black would be Bb.
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Final answer:
The genotypes of the mother and father rabbits that could produce this outcome in the phenotypes of their offspring are Bb and Bb. Both rabbits must be heterozygous for the black fur allele (Bb) in order to produce a ratio of six black babies to two white babies in their offspring.
Explanation:
The genotypes of the mother and father rabbits that could produce this outcome in the phenotypes of their offspring are Bb and Bb. The black fur allele (B) is dominant to the white fur allele (b). Since six of the babies were black and two were white, it means that the ratio of black to white offspring is 3:1, which is consistent with Mendel's Law of Segregation. In this case, both the mother and father rabbits must be heterozygous for the black fur allele (Bb) in order to produce this phenotypic ratio in their offspring.
(01.02 MC)
Explain how living organisms are classified into different kingdoms,
Answer: All living organisms are classified by their characteristics.
Explanation: Each kingdom includes a set of organisms that share similar characteristics. The organisms in each Kingdom are considered biologically distinct from the others. The six Kingdoms are: Archaebacteria, Eubacteria, Fungi, Protista, Plants and Animals.
Which of the following controls the activity of all the others?
ovaries
testes
hypothalamus
pituitary glands
Answer:
Pituitary Glands
Explanation: