Answer:
The correct answer is option A) "the environment that they lived in remained the same, and they were well-adapted to it".
Explanation:
One of the basis of evolution is that species that face new environmental conditions tend to develop new traits to survive. The opposite applies to species that have lived in constant environmental conditions, these species are usually well-adapted and have changed very little over long periods of geologic time. Some species of tortoises are examples of animals that had changed very little in their evolutionary history. The hard shells of tortoises is an ancient adaptation that help them to survive in constant environmental conditions.
The lack of change in organisms in some species examined by scientist is most likely because A) the environment that they lived in remained the same, and they were well-adapted to it
What is adaptation?Adaptation can be regarded as the biological mechanism whereby organisms adjust to new environments or to changes in their current environment.
Therefore, the reason why some species have changed very little over long periods of geologic time is due to adaptation.
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By what process are gases exchanged between the blood and the lungs
Answer:
its is b
hope u got it correct
which of the following steps happens first during transcription?
Answer:
RNA polymerase attaches to the promoter.
Explanation:i just did it
The following steps happen first during transcription: the RNA polymerase reaches the beginning of a gene that is the second option (B), as the beginning of a gene is the promoter.
What is the significance of the transcription initiation?Transcription initiation has many implications, such as the fact that prokaryotic initiation is different from eukaryotic initiation, where the RNA polymerase first binds at the promoter site of the gene, where it starts moving towards the gene, and then after reaching the termination site, the transcription stops. In this process, the final product is mRNA from DNA.
Hence, the following steps happen first during transcription: the RNA polymerase reaches the beginning of a gene that is the second option, as the beginning of a gene is the promoter.
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What happens to an organisms energy storage molecules when it reproduces
An organism's energy storage molecules decrease when it reproduces.
How does energy decrease?As a transfer molecule, ATP, between exergonic and endogenic reactions, energy is quickly depleted.
When cells divide during mitosis or meiosis, ATP and NADPH are used to power the processes.
As mitochondria are randomly distributed, their ATP generation continues because ATP is not stored but is constantly used.
The hydrolysis of ATP results in the formation of ADP, inorganic phosphate ion, and the release of free energy.
To carry out life processes, ATP is constantly broken down into ADP, and ADP, like a rechargeable battery, is constantly regenerated into ATP through the reattachment of a third phosphate group.
Thus, we can conclude that energy decreases when organisms reproduce.
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A geologist is examining a new sample of rock. She is trying to categorize it based on its physical properties. Which of the following characteristics cannot be identified based on her basic visual and tactile assessment? color melting temperature texture striations
The answer is temperature.
Answer:
Melting temperature
Explanation:
During dna replication the wrong nucleotide was inserted in the DNA sequence. Which of the following terms describes the situation? Mutation, translation, regeneration, or transcription.
The situation in which the wrong nucleotide was inserted during DNA replication is referred to as a mutation.
DNA replication is the process by which DNA makes an identical copy of itself. This is critical for cell division during growth or repair of damaged tissues. DNA replication is a highly regulated process that occurs in three stages. Initiation, elongation, and termination are the three stages. The replication of DNA occurs in the nucleus of eukaryotic cells, and it is carried out by several enzymes in a semi-conservative manner.
During DNA replication, the two strands of the double helix unwind and separate. Each single strand then serves as a template for the formation of a new complementary strand. DNA polymerase is the primary enzyme involved in DNA replication. The addition of new nucleotides to the growing strand in a complementary manner occurs in the presence of DNA polymerase.
DNA Replication and Mutation During DNA replication, mistakes may occur. These errors, which can result from damage to the DNA molecule or mistakes made during DNA synthesis, are referred to as mutations. When a mistake is made during DNA replication, the incorrect nucleotide is inserted into the growing DNA strand. This can cause a mutation in the DNA sequence, which can have a wide range of effects, from none at all to severe genetic disorders.
The wrong nucleotide's insertion into the DNA sequence causes a mutation. DNA replication errors can result in a variety of mutations, including base pair substitutions, deletions, and insertions. These mutations can have a range of effects, from none at all to severe genetic disorders, depending on their location and severity.
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How does the fossil record support the evolutionary theory?
a. it shows that organisms haven’t changed over the course of Earth’s history
b. it shows the slow continual change of all species to their present-day form
c. it shows how some organisms of the past are similar to organisms on Mars
d. it shows how rocks can support life for millions of years
Answer:
B. it shows the continual change of all species to their present-day form.
Explanation:
Other answers do not make sense towards the question.
Which is present only in Eukaryotic cells?
A. Cell membrane
B. chromosomes
C. DNA
D. nucleus
An eukaryotic cell has a well-defined nucleus which is not present in the prokaryotic cell. Thus, the correct option is D.
What is a eukaryotic cell?A eukaryotic cell is a true cell. This cell is different from the prokaryotic cell. The eukaryotic cell has all the membrane-bound organelles such as mitochondria and chloroplast. Eukaryotic cell has a well-defined nucleus which is absent in the prokaryotic cell.
Nucleus is known as the brain of cell. Nucleus contains all the genetic information of the cell in the form of DNA (deoxyribonucleic acid).
Eukaryotic cells are present in all the higher organisms including plants and animals.
Therefore, the correct option is D.
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1. What are the 2 ways producers can produce food energy?
Answer:
Photoautotrophs and Chemoautotrophs.
Explanation:
The Photoautotrophs process uses sunlight or photosynthesis.
The Chemoautotrophs process uses chemicals.
how RNA codes amino acids? exact answer
Answer:
A series of codons in part of a messenger RNA (mRNA) molecule. Each codon consists of three nucleotides, usually corresponding to a single amino acid. The nucleotides are abbreviated with the letters A, U, G and C. ... This mRNA molecule will instruct a ribosome to synthesize a protein according to this code
true or false
darwin and haeckel used the analogy of a wheel to represent phylogenies.
Answer:
true
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
help.. How long will it take three quarters of a sample of a radioactive
element to decay if its half-life is 4 days?
a. 2 days
b. 3 days
c. 4 days
d. 8 days
Base your answers to question 8 on the information below and on your
knowledge of biology. Evolution leads to changes in how frequently
certain traits appear in a population. 8) Describe how the process of
natural selection can result in an increase in frequencies of certain traits
found in a population *
Answer:
Natural selection refers the effect of selection pressure on the frequency of allele in the population.
Generally,natural selection increases the chances that certain allele will survive for long period of time, and therefore the chances of successive reproduction. Therefore organisms with these alleles with higher chances of reproduction have high selective advantages, and therefore better adapted to withstand the selective pressure and therefore undergo directional selection within the organisms in the population.
Consequently, they are better reproduced, and thus well populated.The r frequency of their traits is well expressed from generation to generation, and therefore naturally selected, and evolve over long period.
Which part of a flower will develop into fruit? filament ovary petal stigma
Answer:
ovary
Explanation:
Answer:
The answer is ovary.
hope this help people
Which of the following groups work together to create foreign policy?
Answer:
the executive branch and Congress
Explanation:
The branches because they are the following groups work together to create foreign policy
The groups work together to create foreign policy in the Executive branch and Congress. The correct option is C.
What are foreign policies?The public, Congress, the executive branch, and the president must all participate in determining foreign policy. On the other hand, the President and his deputies in the executive branch have sole authority to carry out foreign policy.
The United States' relations with other nations are referred to as its foreign policy. The President, the Senate, and the House of Representatives frequently vote on this. The Supreme Court's only responsibility is to interpret the Constitution; it does not formulate foreign policy.
Treaties, trade policies, and other crucial choices that will determine how America conducts its international relations are made in collaboration between Congress and the executive branch.
Therefore, the correct option is C. the executive branch and Congress
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The question is incomplete. Your most probably complete question is given below:
Congress and the Supreme Court
Senate and executive branch
the executive branch and Congress,
Senate the Supreme Court
According to the trichromatic theory of color vision, the eye has cones sensitive to colors associated with ___________. A. red, green, and yellow B. green, purple, and red C. red, green, and blue D. black, brown, and white
Answer:
c. red, green and blue.
Explanation:
The three main colors, also known as the primary colors are Red, Green and Blue. The trichromatic theory believes that the human eye and receive light of three different wavelengths (which are red, green and blue) and is able to combine these three different wavelengths in order to see the entire visible spectrum that make up millions of different colors. As can be visualized by the attached picture below.
According to the trichromatic theory of color vision, the eye has cones sensitive to colors associated with red, green, and blue. Therefore, the correct option is C.
According to the trichromatic theory, commonly known as the Young–Helmholtz theory, the human eye has three different types of color-sensitive cones, each sensitive to a different range of light wavelengths. These cones are most sensitive to red, green and blue light respectively.
Our visual system is able to perceive a wide spectrum of colors by integrating information from these three different types of cones. Different levels of activation of these three cone types and stimuli lead to the perception of additional colors.
Therefore, the correct option is C.
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Suppose an ecosystem suddenly loses all of its consumers to a disease. Which of the following scenarios would most likely happen?
A} Carnivores and omnivores would starve to death.
B} Energy would no longer enter the ecosystem.
C} The ecosystem would become overgrown with plants.
D} Plant-eating organisms would become abundant.
What type of forensic technique should be used? Police discovered a badly damaged corpse the body was damaged beyond recognition the police expert however can use DNA _____ to identify the victim?
Answer:
DNA profiling or DNA fingerprinting
Explanation:
DNA profiling is also known as DNA fingerprinting which is widely used in to determine an individual's DNA characteristics.
DNA profiling is widely used in forensic technique in victim or criminal investigations, where DNA is collected that can be hair, blood, body tissue sample or other. The sample is then compared with other suspect's sample which are expected to to be involved to determine whether there is a genetic match and that will help to identify the victim or criminal.
DNA profiling is used to match genetic formation between people which will help to identify parentage testing as genes inherited in the family is almost same and the the victim body will be identified.
Hence, the correct answer is DNA profiling.
Answer:
DNA fingerprinting
Explanation:
Which of the following is most likely to be in observation made by an anatomist
Answer:
The nervous system is composed predominantly of neural tissue.
Explanation: Anatomist study anatomy, the study of the structure of organisms or their parts. By observing the structure of the nervous system, anatomist will tell that it is composed predominantly of neural tissue. So, he observed the structure of one part of an organism.
Which of the following is part of the Pharyngeal-esophageal phase of swallowing? MULTIPLE CHOICE.
A. Occurs in the mouth
B. Food is formed into a bolus
C. The bolus is forced into the pharynx by the tongue
D. The soft palate blocks the nasopharynx
1
The arctic fox inhabits northern areas of North America. The same arctic fox is shown in the drawing at different
times of the year.
July
What causes this change in fur color?
J Gene expression for fur color is regulated by temperature
G Gene expression for fur color is regulated by latitude.
H The arctic fox has two traits for fur color that are determined at birth.
F The alleles for fur color change as the arctic fox grows older."
Answer:
the correct answer is "J The gene expression for coat color is temperature regulated"
Explanation:
Animals present for the same physical characteristic different phenotypic expressions of the same genome according to the environment in which they are submitted and their affection on them.
The different temperatures makes the fox present different phenotypic manifestations of the same genome, for that reason it is why it changes color and could even change in thickness or quantity.
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How are spring and neap tides different from regular tides? Check all that apply.
They occur twice a day.
They are caused by wind.
They occur twice a month.
They are extra-high tides and extra-low tides.
They are caused when the Sun and the moon align and exert additional gravitational pull.
Answer:
1.They occur twice a month.
2.They are extra-high tides and extra-low tides.
3.They are caused when the Sun and the moon align and exert additional gravitational pull.
Which position of the pendulum would have the least amount of potential energy.
Answer:
a) 1 & 5
Explanation:
For a pendulum bob, it is customary to call the lowest position the reference position or the zero level. So when the bob is at the equilibrium position
Suppose that B is the dominant trait and b is the recessive trait. What are the chances that the offspring of these two parents will display the recessive trait?
Answer: 0%
Explanation: If one parent is has BB genotype, and the other bb then the ofspring possibility would all be Bb
Answer:
zero percent
Explanation:
Going "green" means to pursue knowledge and practices that can lead to more environmentally friendly and ecologically responsible decisions and lifestyles, which can help protect the environment and sustain its natural resources for current and future generations. As America moves closer to a clean energy future and becoming "green,"what must be considered, especially when it comes to solar and wind power?
Answer:
Both solar and wind power need to be affordable for people to have them at there homes. They also need to offered to people because some people don’t know about solar or wind energy. Another thing about solar and wind energy is that it has to be safe and professionally installed for it to be safe.
Explanation:
After hunting by European settlers, the bison population of 60 million was reduced to _______ of its original size. a. 1 : 60 b. 1 : 600 c. 1 : 6,000 d. 1 : 60,000 Please select the best answer from the choices provided A B C D
Answer: The correct answer is D. After hunting by European settlers, the bison population was reduced to 1:60,000 of its original size.
Explanation:
Answer:
D
Explanation:
All cells contain the same genetic information. Why can't cells other than stem cells differentiate into various tissues?
Select one:
a. As cells develop, their genetic makeup changes.
b. As cells develop, some genes are turned off permanently.
c. Stem cells are the only cells that do not have an X or Y chromosome and can therefore go into either a male or female.
d. Stem cells are the only cells that can be implanted.
Answer:
c. stem cells are the only cells that do not have an X and Y chromosome and can therefore go into either make or female
All cells contain the same genetic information. Stem cells are the only cells that do not have an X or Y chromosome and can therefore go into either a male or female. Thus, option C is correct.
What is DNA?
DNA has been known as the molecule that contains the genetic information that is necessary to generate proteins. This is due to the sequence of the nucleotides, which are the monomers of DNA. Each nucleotide has been contained a different base Adenine (A), Timine (T), Guanine (G), Cytosine (C).
When the cell has needs to synthesize the proteins, DNA has not used directly but the transcribed into RNA. This RNA has been directed to the ribosomes, organelles where the protein synthesis has been taken place, and according to the sequence of RNA which is complementary to DNA, the different amino acids has been coded. During translation, aminoacids are joined together to form proteins.
Therefore, All cells contain the same genetic information. Stem cells are the only cells that do not have an X or Y chromosome and can therefore go into either a male or female. Thus, option C is correct.
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why is glucose important to all life on Earth
Answer:
Glucose is arguably the most important monosaccharide because it is used in respiration to provide energy for cells.
Explanation:
The energy stored in the bonds of glucose molecule is converted by a series of reactions into energy that is usable by cells.
The table below shows the number of chromosomes pairs for various organisms
Which organism can produce the highest number of genetically different gametes ?
A. Giraffe
B. Elephant
C. Gorilla
D. Ferret
Answer:
giraffe
Explanation:
the more chromosome pairs an animal has, the more genetically different gametes it will produce.
Answer:
a
Explanation:
11. What type of cell is formed in this MALE organism at stage D? *
Answer:
I think it's the sexually reproduction cell although it's hard to tell what exactly is stage D?
Explanation:
a trait that hides or masks another trait is...
a) DNA replication
b) incomplete dominance
c) a recessive trait
d) a dominant trait
Answer:
a dominant trait
Explanation:
The trait that first appears or is visibly expressed in the organism is called the dominant trait. The trait that is present at the gene level but is masked and does not show itself in the organism is called the recessive trait.
Answer:
C and B
Explanation:
Genes for different traits are inherited independently of one another (law of independent ... Multiple alleles, incomplete dominance, and codominance (article) ... Recessive alleles of two different genes may give the same phenotype. ... The concept of complementary genes simply states that if certain alleles.