which fossil fuel is the most widely used in the United States
A gene is a region of DNA that contains instructions for the manufacture of?
which is the substrate, enzymes and products for this equation? Is lactase used up in the reaction?
Which of these is an ABIOTIC change to an environment?
A. A species goes extinct
B. A fire destroys the topsoil in a forest
C. A tree falls down
D. A new species is introduced
The white-tailed deer, Odocoileus virginianus, is common in the Eastern United States. Most deer have reddish brown fur, but occasionally a deer may be born with a genetic condition known as albinism which results in white fur. Albinism is caused by the inheritance of two recessive alleles for the production of coloration pigments. If an albino deer is born to two parents who each have normal fur coloration, what conclusion may be drawn about the genotypes of the parent deer? A) Both parents must be homozygous for the coloration gene. B) Both parents must be heterozygous for the coloration gene. C) The female parent must have two recessive alleles for the coloration gene. D) No conclusion may be drawn about the parental genotypes based on the information given.
Answer:the right answer is b
Explanation:
How do the main sequence stages of these two sizes of stars differ?
Explanation:
Even apart from how bright they appear, which is affected by how far they are from us, stars come in a tremendous range of sizes. So stars aren't all the same mass because the clouds from which they condense are not all the same mass.
The main sequence stages of these two sizes of stars differ in their actual distance from the surface of the earth and their ability to condense the mass of the clouds.
How the brightness of a star is determined?The brightness of a star is determined by the fact that the distance from the earth. If you take a star and move it twice as far away, it would definitely appear 1/4 as bright. The larger the star is, the more energy is put out in order to liberate its brightness.
The sizes of the stars may vary a lot. This means that they have different distances and brightness from the earth. So, all stars do not occupy the same mass. This is because the clouds from which they condense or are covered may not possess not the same mass.
Therefore, the main sequence stages of these two sizes of stars differ in their actual distance from the surface of the earth and their ability to condense the mass of the clouds.
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Voluntary muscles can be controlled, while involuntary muscles cannot. Do you think stomach muscle is voluntary or involuntary?
What are the strengths and limitations of this model ?
Answer:
i dont think there is any
Explanation:
the only might be that it not physical model
Scientists believe green algae to be the ancestors of land plants. The classification division separating algae from the kingdom Plantae began with fossil evidence. To be successful land plants require certain modifications. This early Devonian land plant had both vasular tissue and, as seen here, A) roots. B) spores. C) seed pods. D) chlorophyll.
Answer:
roots
Explanation:
cow skin cell has 60 chromosomes. After cell division, each daughter skin cell will have....?
Answer:
[tex]60[/tex] chromosome.
Explanation:
The skin cells divide by the process of mitosis cell division while sex cells divide by the process of meiosis cell division.
In a mitotic cell division, a parent cell divides into two or more identical cells having equal number of chromosomes. Thus, in a mitotic cell division haploid cell are produced.
Number of chromosome in daughter cell [tex]=[/tex] number of chromosome in parent cell
Therefore, after mitotic cell division, each daughter skin cell will have [tex]60[/tex] chromosome.
What evidence supports geological processes changing the surface of the Earth? Cutting down forests creates a decrease of habitats. Tectonic plates uplift the rocky crust of Earth to form mountains. Competition in ecosystems creates a decrease in diversity. Pollution runoff contaminates a lake.
answer:
Tectonic plates uplift the rocky crust of Earth to form mountains.
Answer: Tectonic plates uplift the rocky crust of Earth to form mountains.
What is the energy source that feeds a thunderstorm?
The sun is the primary energy source for a thunderstorm. It heats the Earth's surface, resulting in air convection. The additional energy from water vapor condensation also furthers the storm.
Explanation:The primary energy source that feeds a thunderstorm is the sun. Sunlight warms the surface of the Earth, which in turn heats the air above it. This heated air begins to rise, a process known as convection. As this moist, warm air rises and cools in the atmosphere, it forms clouds and potentially storms. The process by which the water vapor in these clouds condenses and falls back to the Earth releases additional energy, fueling the storm further.
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HELP ME ASAP!!!!!!!!
Assignment: Using Punnett Squares Exploration
First Cross
Genotypic ratio:
Phenotypic ratio:
Second Cross
Genotypic ratio:
Phenotypic ratio:
Third Cross
Genotypic ratio:
Phenotypic ratio:
Questions
1. What conclusions can you draw about the results of your first cross between a homozygous red bull (RR) and a heterozygous red cow (Rr)?
2. What conclusions can you draw about the results of your second cross between a heterozygous red bull (Rr) and a heterozygous red cow (Rr)?
3. What conclusions can you draw about the results of your third cross between a homozygous white bull (rr) and a homozygous white cow (rr)?
Answer:
a)
R R
R RR RR
r Rr Rr
Genotypic ratio: RR : Rr = 2 : 2 = 1: 1
Phenotypic ratio: homozygous red bull (RR) : heterozygous red cow (Rr) = 2:2 = 1: 1
b)
R r
R RR Rr
r Rr rr
Genotypic ratio: RR : Rr:rr = 1:2:1
Phenotypic ratio: homozygous red bull (RR) : heterozygous red cow (Rr) : homozygous white bull (rr) = 1: 2: 1
c)
Xr Yr
Xr Xr Xr Xr Yr
Xr Xr Xr Xr Yr
Genotypic ratio: Xr Xr: Xr Yr = 2: 2 = 1: 1
Phenotypic ratio: homozygous white cow (Xr Yr) : heterozygous white bull (Xr Yr) = 2: 2 = 1: 1
Explanation:
a)
First cross is between a a homozygous red bull (RR) and a heterozygous red cow (Rr)
This shows that "Red" color is a dominant trait
So the cross between Rr and RR is
R R
R RR RR
r Rr Rr
Genotypic ratio: RR : Rr = 2 : 2 = 1: 1
Phenotypic ratio: homozygous red bull (RR) : heterozygous red cow (Rr) = 2:2 = 1: 1
b)
Cross between a heterozygous red bull (Rr) and a heterozygous red cow (Rr)
R r
R RR Rr
r Rr rr
Genotypic ratio: RR : Rr:rr = 1:2:1
Phenotypic ratio: homozygous red bull (RR) : heterozygous red cow (Rr) : homozygous white bull (rr) = 1: 2: 1
c)
Cross between a homozygous white bull (rr) and a homozygous white cow (rr)
Xr Yr
Xr Xr Xr Xr Yr
Xr Xr Xr Xr Yr
Genotypic ratio: Xr Xr: Xr Yr = 2: 2 = 1: 1
Phenotypic ratio: homozygous white cow (Xr Yr) : heterozygous white bull (Xr Yr) = 2: 2 = 1: 1
xplain how the study of taxonomy helps other scientists.
What would happen to your food web if the phytoplankton died out because of water pollution?
How does the rock cycle transform rocks from one type to another?
Answer:
Explanation:
The three processes that change one rock to another are crystallization, metamorphism, and erosion and sedimentation. Any rock can transform into any other rock by passing through one or more of these processes. This creates the rock cycle.
During cell division, or mitosis, an exact duplicate of the original cell is produced. The instructions for cell division are found in the __________ in the __________. A) nucleus:RNA B) chromosomes:nucleus C) nucleus:nucleolus D) ribosomes:RNA Submit Hint Calc From Molecules to Organisms: Structures and Processes (HS-LS1-4) Mitosis ID: 27320
Answer:
It is B) chromosomes: nucleus
Explanation:
The instructions for cell division are found in the chromosomes in the nucleus. Before a new cell is formed, the DNA in the chromosomes replicates, or makes a new copy. Then each new cell gets a copy.
A viral infection of the liver is called _____.
dysentery
polio
mumps
hepatitis
What is a Winter storm Watch?
in what direction does the shadow from a stick or sundial point at each point of the following times
Sonar stands for “sound navigation and ranging.” What assumption was proved wrong after the invention of sonar? The age of the ocean floor is variable. The ocean floor is featureless. The ocean floor is changing. The ocean floor is denser than continental crust.
The ocean floor is featureless was proved wrong after the invention of sonar.
A Sound Navigation and Ranging (sonar) is a device used for navigation in the oceans.The sonar enables us to explore and map the ocean by using acoustical waves.These sound (acoustical) waves can travel more than radar waves and light waves.In conclusion, the ocean floor is featureless was proved wrong after the invention of sonar.
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Which of the following describes how blood helps to maintain homeostasis by working with the immune system?
By having white blood cells to attack pathogens
By delivering oxygen to cells so they can divide
By delivering nutrients from food to cells
By carrying waste to the kidneys
Answer:
i just took the test, its A
Explanation:
a lion eating a zebra is an example of which characteristic of life?
- having cells
- responding to the environment
- using energy
- growing and developing
Answer:
using energy
Explanation:
by a group of cells that work together to perform a common function is a tissue. A lion eating a zebra is an example of using energy. Because the lion is using it energy to get the zebra this will later lead to development
A lion eating a zebra is an example of using energy, which is one of the characteristics of life.
Explanation:A lion eating a zebra is an example of using energy, which is one of the characteristics of life. Living organisms, like lions, require energy to carry out their life processes. By consuming the zebra, the lion obtains the energy it needs for various activities, such as hunting, reproducing, and maintaining bodily functions.
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Topsoil that washes onto a coral reef _____.
Gradpoint!
Makes the water cloudier.
1. In pea plants, purple flower color is dominant to white flower color. If a homozygous dominant flower mates with a white flower, what is the chance of having white flowered offspring?
Which amino acid would be encoded by the mRNA codon CGA?
The mRNA codon CGA encodes the amino acid arginine. To decode an mRNA sequence, we read the codons from the 5' end, and translate each codon into its corresponding amino acid until a stop codon is encountered.
Explanation:The mRNA codon CGA would encode the amino acid arginine. To determine the amino acid sequence that the mRNA sequence 5'-AUGCUGAAUUGCGUAGGA-3' codes for, we utilize the genetic code to match each triplet codon to its corresponding amino acid. The sequence is read from the 5' end, and each triplet of nucleotides (codon) is translated into an amino acid following the genetic code. The provided mRNA sequence translates to the amino acids met, leu, asn, ala, stop, where the sequence starts at the initial AUG codon, which codes for methionine (met), and continues translation until a stop codon is reached. In this sequence, the stop codon is UAG.
What is the largest level of organization for the environment?
population
biosphere
community
ecosystem
Answer:
The answer is Biosphere
Explanation:
4). A particular bird species found in North America obtains most of its food energy by catching and eating insects. A mutation arises in this bird population that increases the length of its beak. Although many mutations are harmful, this particular mutation has increased the ability of the bird to catch and eat certain insects. Which of these is the MOST LIKELY outcome of this mutation?
A) The insects that are eaten by this bird are likely to become extinct.
B) Sharp pointed beaks will result in the birds eating other more unusual food items.
C) Other bird species will be more likely to also develop pointed beaks in order to compete.
D) Individual birds with the mutation will be more likely to survive and reproduce than birds without the mutation.
5). In 1831, Charles Darwin visited the Galapagos Islands. While observing the giant land tortoises that lived on these islands, Darwin noted that the shape of the tortoise shell varied depending on which island the tortoise lived. Tortoises on one island had round shells, for example, whereas tortoises on a neighboring island had more flattened, saddle-shaped shells. Which statement BEST summarizes Darwin's explanation for these differences?
A) Random mutations caused the shape of the shells to fluctuate periodically.
B) The shape of the tortoise shell varied because the predators on the islands were all similar.
C) The particular shape of the shell was best suited for the island on which the tortoise was living.
D) Tortoises who used their shells in special ways caused the shells to become larger, rounder, or flatter.
The most likely outcome of this mutation is that other bird species will be more likely to also develop pointed beaks in order to compete. Thus, the correct option for this question is C.
The statement best summarizes Darwin's explanation for these differences is that the tortoises that used their shells in special ways caused the shells to become larger, rounder, or flatter. Thus, the correct option for this question is D.
What is Mutation?A Mutation may be defined as the sudden, stable, and inheritable changes in the genetic material of an organism due to the significant impact of mutagens.
When a particular bird species increases the length of its beak due to mutation, other bird species of this region also require to increase their beak's length in order to compete better for their resources and reduce the chances of extinction.
According to Darwin, the differences in the shells of the tortoises arise due to the utilization of their shells in special ways. This facilitates the shells to become larger, rounder, or flatter.
Therefore, both questions are well described above one by one.
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Commercial fishing in certain parts of the ocean decreases the number of small fish. As a result, large fish and sharks...
are negatively affected because there is less oxygen in the water.
are positively affected because the small fish polluted the water.
are negatively affected because they feed on the small fish.
are positively affected because there is more space.
What happens in the G2 phase of the cell cycle?
The cell prepares for cell division.
The replicated chromosomes divide.
The cell enters the post mitotic phase.