Answer:
D
Explanation:
Two sex cells, the gamete and the sperm, come together to make the body cells, so the number of chromosomes for a body cell must be double that of a sex cell, 46/2=23
i hope this helps u!
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What do plants living underwater have to adapt to their environment?
Answer:
Most aquatic plants do not need adaptions for absorbing transporting and conserving water. they can save energy and matter by not growing extensive root systems vascular tissues or thick cuticles on leaves.
To which bone does the arrow point?
O
A. Tibia
O
B. Phalanges
O
C. Ulna
OD. Fibula
Answer:
your ulna
Explanation:
C
Which of the following statements is not accurately describing a T Cell?
A) T-Cells mature in the thymus
B) T-Cells can contact any cell in the body that is presenting an antigen
C) T-Cells only make antibodies when they are in contact with B-Cells
D) T-Cells must make contact with the surface of another cell to be fully activated
A is wrong.
B is right because that is their job.
C is wrong because that is the B-cells' role.
D is wrong.
Cross a heterozygous right-handed dad and a left-handed mom. What percent of left-handed kids would you expect?
Final answer:
When crossing a heterozygous right-handed dad with a left-handed mom, 50% of the offspring are expected to be left-handed. This conclusion is drawn from setting up a Punnett square that presents a ratio where half of the possible genotypes show the recessive trait (left-handedness).
Explanation:
To determine the percentage of left-handed kids from a cross between a heterozygous right-handed dad (Rr) and a left-handed mom (assuming left-handedness is recessive, rr), we can set up a Punnett square. The genotypes of their potential offspring would be as follows: Rr (right-handed) and rr (left-handed). Since left-handedness is recessive, both alleles (r) would be needed for a child to be left-handed.
According to standard Mendelian genetics, the Punnett square would look like this:
Rr (Right-handed heterozygote)rr (Left-handed)Rr (Right-handed heterozygote)rr (Left-handed)In this setup, 2 out of the 4 possible genotypes result in left-handedness. Therefore, we would expect 50% of the offspring to be left-handed. This is similar to predicting offspring genotypes in other genetic crosses. If we apply the same logic to the example of the cross between a white-eyed male and a female that is heterozygous for red eye color, we would have the following ratios:
25% of the offspring are males and hemizygous dominant with red eyes25% are male and hemizygous recessive with white eyes25% are female and heterozygous with red eyes25% are females and homozygous recessive with white eyesThis demonstrates a Mendelian 1:1 ratio when considering a specific trait within a sex (like eye color in males).
Which of the following is A true statement about heat transfer through conduction convection or radiation?
Answer:
It is A
Explanation:
Answer:
Heat ALWAYS flows from warmer objects to cooler objects.
Explanation:
Explain how the process of photosynthesis and respiration are related
Final answer:
Photosynthesis converts light energy into chemical energy, producing glucose and oxygen from carbon dioxide and water. Cellular respiration, in turn, uses glucose and oxygen to release energy, emitting carbon dioxide and water. These processes are reciprocal, with the outputs of one serving as the inputs of the other, helping to maintain the balance of atmospheric gases.
Explanation:
Photosynthesis and cellular respiration are two fundamental processes for energy transformation in organisms. Photosynthesis is the process that utilizes light energy to convert carbon dioxide and water into glucose and oxygen. This can be represented by the equation 6CO₂ + 6H₂O + Light Energy → C₆H₁₂O₆ + 6O₂. Conversely, cellular respiration takes glucose and oxygen to produce carbon dioxide, water, and energy, as shown by the equation C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + Energy. This indicates that the products of photosynthesis are the reactants in respiration, and vice versa.
In the global carbon cycle, these two processes are interconnected, playing opposite roles. Photosynthesis removes carbon dioxide from the atmosphere and produces oxygen as a byproduct, while respiration returns carbon dioxide into the atmosphere and consumes oxygen. Together, they maintain the balance of oxygen and carbon dioxide in our atmosphere, which is essential for life on Earth.
In the system used to classify all organisms, which of the following is true? A: All groups have the same number of organisms.B: Organisms in the same group have similar characteristics.D: The largest groups have the most important animals.C: Organisms are placed in groups by how big they are.
Answer:
B: Organisms in the same group have similar characteristics.
Explanation:
All living organisms are classified into groups based on very basic, shared characteristics. Organisms within each group are then further divided into smaller groups. These smaller groups are based on more detailed similarities within each larger group. This grouping system makes it easier for scientists to study certain groups of organisms. Characteristics such as appearance, reproduction, mobility, and functionality are just a few ways in which living organisms are grouped together. These specialized groups are collectively called the classification of living things. The classification of living things includes 7 levels: kingdom, phylum, classes, order, families, genus, and species .
Kingdoms
The most basic classification of living things is kingdoms. Currently there are five kingdoms. Living things are placed into certain kingdoms based on how they obtain their food, the types of cells that make up their body, and the number of cells they contain.
Phylum
The phylum is the next level following kingdom in the classification of living things. It is an attempt to find some kind of physical similarities among organisms within a kingdom. These physical similarities suggest that there is a common ancestry among those organisms in a particular phylum.
Classes
Classes are way to further divide organisms of a phylum. As you could probably guess, organisms of a class have even more in common than those in an entire phylum. Humans belong to the Mammal Class because we drink milk as a baby.
Order
Organisms in each class are further broken down into orders. A taxonomy key is used to determine to which order an organism belongs. A taxonomy key is nothing more than a checklist of characteristics that determines how organisms are grouped together.
Families
Orders are divided into families. Organisms within a family have more in common than with organisms in any classification level above it. Because they share so much in common, organisms of a family are said to be related to each other. Humans are in the Hominidae Family.
Genus
Genus is a way to describe the generic name for an organism. The genus classification is very specific so there are fewer organisms within each one. For this reason there are a lot of different genera among both animals and plants. When using taxonomy to name an organism, the genus is used to determine the first part of its two-part name.
Species
Species are as specific as you can get. It is the lowest and most strict level of classification of living things. The main criterion for an organism to be placed in a particular species is the ability to breed with other organisms of that same species. The species of an organism determines the second part of its two-part name.
Hope I am right on this one and that it helps you!
Organisms in the same group have similar characteristics, based on very fundamental, common traits, categories of all living things are identified, hence option B is correct.
What is classification of organisms?These more specific similarities within each bigger group form the basis for these smaller groups. It is simpler for scientists to investigate particular groups of organisms thanks to this classification scheme.
Living things can be categorized according to traits like appearance, reproduction, mobility, and usefulness, to name just a few.
The classification of living entities refers to all of these specialized divisions. The seven categories that make up the classification of living entities are kingdom, phylum, classes, order, families, genus, and species.
Therefore, option B is correct.
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Which of these is a benefit of using wind turbines over coal-based power plants?
A. Wind turbines produce noise pollution.
B. Wind energy is less developed than coal.
C. Wind turbines cost more than coal-based power plants.
D. Wind energy pollutes less than coal.
Answer:
d.wind energy pullutes less than coal
Explanation:
they are not polluting the air it is making energy also
Answer:
b
Explanation:
what do plants and animals need nitrogen for?
Answer:
Nitrogen is a important element for many macromolecules like nitrogenous bases in DNA and are even found in some organic compounds produced by animals or plants that are vital for their survival.
what type of fossil would provide the best information about how an organism behaved?
A. a true form fossil
B. a mold fossil
C. a cast fossil
D. a trace fossil
Pls hurry and answer
Answer:
Trace Fossil
Explanation:
Answer:
D
Explanation:
A mold or cast fossil is the shape of the animal's body that displaced dirt and sand. Meanwhile, a true form fossil would only show the animal's appearances. Trace fossils are fossils such as footprints that help identify an animal's behavior.
What is secondary succession?
Plz helppp I am soo lost
25 points to first help!!
Answer:
Cold front is B and C
Occluded Front is A
Warm Front is D
Stationery front is F E
I believe these are the answers i'm sorry if i got any wrong
Which of the following is a layer of the solid Earth?
A
convecting mantle
B. biosphere
C. Ring of Fire
D.
atmosphere
Quiz
Mexico, experts sai
Unit 2
Select two sentences from the selections below that accurately capture the CENTRAL ideas of this article
1 Monarch butterflies have made a big comeback at their winter homes in Mexico, ex
area they cover rather
recently
2 The butterflies are clumped together so closely they are counted by the area they cover
than by individual insects.
3 But monarchs must reach a much larger population to withstand ever-increasing threats, she
said.
4 The organization is pushing for monarchs to be added to the list of endangered species.
(A)
1 and 4
2 and 4
1 and 3
2 and 3
Answer:
Question 1 : D
Question 2 : B
Question 3 : B
Question 4 : C
Answers for newsela quiz ^
Explanation:
At which point is her kinetic energy increasing and her
potential energy decreasing?
Answer:
kinetic energy increases a s something is moving, and potential decreases a something is moving, and increases as something goes to its highest point.
Explanation:
potential energy is built up or stored energy, so as soon as something starts moving the energy begins to decrease. Kinetic is the opposite, and builds with movement.
Answer:
z
Explanation:
Mangrove trees grow in the water on the edge of a
subtropical island. In time, glass-like plants will grow on
the same spot. Still later, palm trees will grow there. Given
enough time (and no natural disasters), all these plants will
be gone, and a stable pine forest will stand where the
mangroves once grew. Thoso changes best describe steps
Involved in
1) The Heterotroph Hypothesis
2) Ecological Succession
3) Energy Cycles
4) The Water Cycle
Answer:
Ecological Succession
Explanation:
Ecological succession is there a placement of one type of community by another until the stable climax community, which means until it is it is destroyed by some catastrophe. This passage describe succession ending in a stable Pine Forest.
This image shows the Hox genes for a fruit fly, and which parts of the fly embryo and adult they code for. Describe a possible developmental problem in the fruit fly if the fifth (yellow) Hox gene was mistakenly activated in the head area.
Answer:
Mutations in this Hox gene cause a small, malformed jaw in mice, “split-hand/foot malformation” in humans, and legs and antennae popping up where they don't belong, or missing where they do belong, in flies
Explanation:
The Yellow is the problem.
The head the thorax and abdomen.
I hope that helps....
The activation of the fifth (yellow) Hox gene in the head area of a fruit fly possible developmental could lead to a developmental problem known as a homeotic transformation (the homeotic gene).
What is the crucial role Hox genesHox genes are like control switches for different parts of an animal's body as it grows.
Each gene usually works in a specific area to help make sure body parts form correctly.
If the gene meant for the back part of the body (like the fifth Hox gene) is turned on in the head area by mistake, it can cause the head to develop with features that should be in the back. This mix-up is called a homeotic transformation.
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Please help.
NOT BIOLOGY! EARTH SCIENCE WASN'T A CHOICE!!
Answer:
Deforestation - The clearing or cutting down of trees.
Desertification - The process by which habitable land turns uninhabitable.
Urbanization- The movement of people from rural areas to cities.
Explanation:
I had earth sciences last year and I forgot most of what happened but eh you could probably solve this with the root words of the words.
"Deforest," or "derive of a forest." Cut down trees.
"Desert" or "deserted," uninhabitable.
"Urban, urbanized" like "urbanized area" or "urbanized population" which relates to a town or a city.
Hope this helped.
Which characteristic contributes MOST to the survival of the different birds on the islands?
the main food sources of the birds
the habitats in which the birds live
the shapes of the birds' beaks
the nanulations of the birds on the island
Final answer:
The shapes of the birds' beaks are the most crucial characteristic for their survival, reflecting adaptations to their specific food sources on islands like the Galápagos, a process known as adaptive radiation.
Explanation:
The characteristic that contributes most to the survival of different birds on islands such as the Galápagos is the shape of the bird's beaks. Through a process known as adaptive radiation, bird populations that colonize new environments, like isolated islands, can undergo evolution to fill various ecological niches. The beaks of birds have adapted to become most efficient for the food sources available in their specific habitat. For instance, seed-eating birds have thicker, stronger beaks to break hard nuts, nectar-eating birds have long beaks to access nectar deep within flowers, and insect-eating birds have beak shapes suitable for capturing and impaling insects. This specialization of beak shapes, sculpted by natural selection, is critical for the bird's ability to find food and thus, for their survival.
Definition of Nucleotide
Explanation: The basic building block of nucleic acid polymers; an organic compound made up of a nitrogenous base, a sugar, and a phosphate group.
I hope this helps you!
Answer:A compound consisting of a nucleoside linked to a phosphate group.
Explanation:GOOGLE
Two waves have the same frequency. The faster of the two waves will have a ______________
smaller amplitude
slower speed
shorter wavelength
longer wavelength
In 1964, which of the following space technologies provided scientists with the best evidence that the universe was created in the big bang?
Answer:
radio telescope
Explanation:
Answer: Radio Telescope
Explanation:
Weather is made up of a variety of conditions in the atmosphere. It includes temperature, or the amount of ____ in the air, as well as humidity, the amount of ____ in the air. Pressure is another factor of weather as it affects wind, or the motion of ____. Precipitation also affects weather, and includes ____ and other forms of water that falls from clouds
A student wrote a sentence describing a difference between sexual reproduction and asexual reproduction.
Asexual reproduction requires two parents, and sexual reproduction requires one parent.
Which statement describes the student’s sentence?
It correctly describes the two processes.
It correctly describes asexual reproduction, but incorrectly describes sexual reproduction.
It incorrectly describes asexual reproduction, but correctly describes sexual reproduction.
It incorrectly describes the two processes.
Answer:
it incorrectly describes both
Explanation:
asexual means one parent
sexual requires 2 parents
Answer:
it's DExplanation:
i got it right on my test,That is the main difference between sexual and asexual reproduction. In many other organisms, two parents are involved, and the offspring are not identical to Asexual reproduction involves a single parentWhich is the best example of a cultural association?
A. Many people respond to an image from a popular fairy tale.
B. Someone may feel that a certain object brings them luck.
c. A person may feel nostalgic about a childhood experience.
D. A family may enjoy looking at the photos from a vacation.
SUBMIT
Answer:
A. Many people respond to an image from a popular fairy tale.
Explanation:
The best example of a cultural association is A. 'Many people respond to an image from a popular fairy tale' because fairy tales carry shared meanings and symbols within a society, reflecting cultural associations.
Explanation:The cultural association example is people's response to an image from a popular fairy tale. This is because cultural associations often involve shared meaning and understanding of symbols, stories, behaviors, or objects within a specific society or community.
Fairy tales, for example, often carry specific cultural associations as they are stories passed down over generations and are embedded with shared cultural symbolism and meanings.
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A mother with type B blood and father with type A blood have four children each with a different blood type. what is the best explanation for the occurrence of the four different blood types or the children?
A. Blood type is only determined by the dominant alleles.
B. blood type is determined by multiple alleles.
C. blood type is inclined by environmental conditions.
D. Blood type is a sex-linked trait.
Pleaseee help me
Answer:
The answer is B.) determined by multiple alleles.
Which of the following statements is true?
A) Genes make up chromosomes.
B) Chromosomes make up proteins.
C) Chromosomes make up genes.
D) Genes make up cells.
Functionality of Genes and chromosomes is described below.
Explanation:
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.A chromosome contains hundreds to thousands of genes.Every normal human cell contains 23 pairs of chromosomes, for a total of 46 chromosomes.A trait is any gene-determined characteristic and is often determined by more than one gene.Some traits are caused by mutated genes that are inherited or that are the result of a new gene mutation.The body produces thousands of different enzymes. Thus, the entire structure and function of the body is governed by the types and amounts of proteins the body synthesizes. Protein synthesis is controlled by genes, which are contained on chromosomes.the genotype is a complete set of instructions on how that person’s body synthesizes proteins and thus how that body is supposed to be built and function. The phenotype is the actual structure and function of a person’s body. The phenotype is how the genotype manifests in a person—not all the instructions in the genotype may be carried out (or expressed). Whether and how a gene is expressed is determined not only by the genotype but also by the environment (including illnesses and diet) and other factors, some of which are unknown. A karyotype is a picture of the full set of chromosomes in a person’s cells.What position correctly describes the human anatomical position?
Question 1(Multiple Choice Worth 4 points)
The steps in the formation of metamorphic rocks are listed below in an incorrect order.
1. Rock is buried deep under earth's surface.
2. Rock is subjected to high temperature and pressure.
3. Rocks with new properties are created.
4. Rock changes in particle arrangement and structure.
Which of these best shows the correct order of steps in the formation of metamorphic rocks?
1, 2, 4, 3
2, 1, 3 ,4
3 ,1 ,4,2
4 ,2 ,3 ,1
The correct sequence for forming metamorphic rocks is: 1. Rock is buried deep under Earth's surface, 2. Rock is subjected to high temperature and pressure, 4. Rock changes in particle arrangement and structure, 3. Rocks with new properties are created.
Explanation:The correct order of steps in the formation of metamorphic rocks is initially the rock being buried deep under the Earth's surface, followed by it being subjected to high temperature and pressure. Once these conditions are met, the rock's particle arrangement and structure start changing, and ultimately, new rocks with altered properties are created. Therefore, the answer to the question is 1, 2, 4, 3, indicating that first, the rock is buried, then it is subjected to high temperatures and pressure, followed by its structure changing, and finally, resulting in the formation of rocks with new properties.
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Final answer:
The correct order of steps in the formation of metamorphic rocks is 1, 2, 4, 3.
Explanation:
The correct order of steps in the formation of metamorphic rocks is 1, 2, 4, 3.
First, the rock is buried deep under Earth's surface. Then, the rock is subjected to high temperature and pressure. As a result, the rock changes in particle arrangement and structure. Finally, new rocks with new properties are created.
For example, when a sedimentary rock like shale is buried deep, it can be subjected to intense heat and pressure and transform into a metamorphic rock called slate which has a different structure and properties.
The tundra is cold year-round. it has short cool summers and long, severe winters. The tundra has a permanently frozen sublayer of soil called permafrost. Like the desert, the tundra receives little precipitation, about 4 to 10 inches per year, and what does fall is usually in the form of snow or ice. It has long days during the growing season, sometimes with 24 hours of daylight, and long nights during the winter. Which adaptations would you expect to see in plants growing in the tundra?
A) leaves with hair help shade the plant, reducing water loss.
B) small and grow in clumps for protection from the wind and cold
C) deep roots to help capture nutrients from deep below the surface
D) tall plants with broad, thin, waxy leaves leaves so water easily runs off