What color is rare in nature as a pigment, most often occurring as a structural color?
Answers
Blue, however, is incredibly uncommon in nature. Approximately one in ten plants and a much smaller number of animals have blue flowers.
What gives, then?
The fact that neither plants nor animals actually contain a true blue pigment or colour means that they must use optical illusions to appear blue. This is partly because there isn't really a true blue pigment or colour in nature. In the lapis lazuli substance, which is mostly mined in Afghanistan and gives the uncommon blue hue ultramarine, trisulfide ions are present, which are three sulphur atoms bound together inside a crystal lattice. One electron can be bound or released by these ions.
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Related Questions
3. The jelly-like region inside the cell that includes the fluid and all the
organelles except for the nucleus. A. Cell membrane B. Chloroplast C. DNA
D. Nucleus E. Cytoplasm F. Cell wall *
Answers
Answer:
Letter E
Explanation:
it's just the letter E
A codon is a series of 3 nucleotides in a portion of a nucleic acid molecule such as RNA and DNA. In DNA, there are 4 nucleotide bases: adenine (A), guanine (G), cytosine (C), and thymine (T). How many possible 3-nucleotide codons are there using these 4 bases? You may use a calculator.
Answers
The majority of amino acids are represented by more than one codon because there are only 20 distinct amino acids but 64 potential codons. (Remember, though, that every codon only stands for one amino acid or stop codon.)
What are the different codons for protein formation?
Codons are units of genomic information made up of three nucleotides (trinucleotides) in DNA or RNA that code for a specific amino acid or indicate the end of protein synthesis (stop signals).
There are 64 distinct codons, of which 3 serve as stop signals and 61 identify amino acids.
An mRNA's codons are read one at a time during translation, starting with the start codon and ending with the stop codon.
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Which of the following features are unique to meiosis?
A) synapsis
B) homologous recombination
C) reduction division
D) A and B
E) A, B and C
Answers
E) A, B and C. Synapsis, homologous recombination, and reduction division are characteristics that are exclusive to meiosis.
What distinguishes the meiotic process?Meiosis and mitosis are distinct from one another in addition to the reduction in the number of chromosomes.Meiosis specifically produces novel genetic material combinations each of the four daughter cells.These novel pairings are the result of DNA switching between linked chromosomes.
What three things are peculiar to meiosis?Homologous chromosomal pairing, crossover, and tetrad formation are among the actions that take place in mitosis but not during mitosis.
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item at position 91 the circulation of blood within an organ or tissue in adequate amounts to meet the cells' current needs is called:
Answers
Answer:
perfusion. the circulation of blood within an organ or tissue in adequate amounts to meet the current needs of the cell.
Give the names of five specific rock varieties that you’ve heard of. Tell what kind of rock each variety is classified as, and the features of each specific rock’s structure that make their classification obvious.
Answers
1. Granite - Igneous rock; 2. Marble - Metamorphic rock; 3. Sandstone - Sedimentary rock; 4. Shale - Sedimentary rock; 5. Basalt - Igneous rocks.
1. Granite - Its classification as an igneous rock is evident due to its formation from the solidification of molten magma or lava.
2. Marble - Metamorphic rock: Marble is a metamorphic rock that forms from the recrystallization of limestone under high heat and pressure. It has a distinctive crystalline structure and a smooth, polished appearance, making its classification as a metamorphic rock apparent.
3. Sandstone - Sedimentary rock: Sandstone is a sedimentary rock composed primarily of sand-sized grains of mineral, rock, or organic material. It often exhibits visible layers or "beds" formed by the deposition and compaction of sand over time, which is a characteristic feature of sedimentary rocks.
4. Shale - It typically has a laminated structure with thin layers, known as "fissility," which easily split apart along parallel planes, highlighting its sedimentary origin.
5. Basalt - Igneous rock: Basalt is a dark-colored igneous rock that forms from the rapid cooling of lava on the Earth's surface. It has a fine-grained texture and is often characterized by small holes or vesicles caused by the escape of gas bubbles during solidification. Its composition and volcanic origin help identify it as an igneous rock.
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Which membrane protein is not integral to the plasma membrane and is often attached to the cytoskeleton?.
Answers
Peripheral membrane protein is not integral to the plasma membrane and is often attached to the cytoskeleton.
What does cytoskeleton mean?The cytoskeleton is a framework that aids in maintaining the internal order and shape of cells. Additionally, it provides mechanical support, enabling cells to carry out essential functions including division and motility.. There isn't just one cytoskeletal element.
What three types of cytoskeletons are there?Actin filaments, microtubules, and intermediate filaments are the three main types of filaments that make up the cytoskeleton.
What is the purpose of the cytoskeleton?The cytoskeleton is present throughout the cytoplasm of the cell and regulates a variety of significant processes. It provides the cell with support and aids in maintaining its form. The cytoskeleton holds a variety of cellular organelles in place. It promotes the development of vacuoles.
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What type of tissues?
ID on models (torso, digestive system, half head) Oral cavity (mouth), tongue, teeth, sublingual gland, hard palate, soft palate, uvula, submandibular gland, diaphragm, liver, gallbladder, ascending c
Answers
The mentioned structures consist of various types of tissues. These include epithelial tissue in the oral cavity, tongue, and glandular tissues; muscle tissue in the tongue, diaphragm, and ascending colon; and connective tissue in the hard palate, soft palate, uvula, liver, and gallbladder.
The tissues mentioned are found in various systems of the body:
1. Oral cavity (mouth): Consists of epithelial tissue, connective tissue, and specialized tissues such as taste buds.
2. Tongue: Comprised of skeletal muscle tissue covered by epithelial tissue.
3. Teeth: Consist of specialized tissues, including dentin, enamel, and cementum.
4. Sublingual gland and submandibular gland: Exocrine glands that contain glandular epithelial tissue.
5. Hard palate and soft palate: Composed of a combination of epithelial tissue and connective tissue.
6. Uvula: Consists of connective tissue and muscle fibers.
7. Diaphragm: A muscle made up of smooth and skeletal muscle tissue.
8. Liver: Composed of hepatocytes, which are specialized epithelial cells.
9. Gallbladder: Contains epithelial tissue for absorbing and concentrating bile.
10. Ascending colon: Part of the large intestine, consisting of smooth muscle tissue.
It is important to note that these tissues collectively make up the structures mentioned, each with their specific composition of cells and extracellular matrix.
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When a skydiver jumps out of an airplane, there are two forces acting on
her: gravity and air resistance. After falling for a few seconds the forces
due to gravity and air resistance balance each other. Once the two forces
are balanced, what type of motion will the skydiver have?
Answers
Answer:
The skydiver will stop accelerating, and will travel at a constant speed in one constant direction.
A mutation caused by a piece of DNA breaking away from its chromosome and becoming attached to a nonhomologous chromosome as demonstrated from the text figure and lecture is called
Answers
A mutation caused by a piece of DNA breaking away from its chromosome and becoming attached to a non-homologous chromosome is translocation.
Translocation is a type of genetic alteration when a segment of one chromosome separates and joins another. Chromosomes from different species can occasionally swap portions with one another. Refer the image for the same.
Medical conditions include leukaemia, breast cancer, schizophrenia, muscular dystrophy, and Down syndrome may result from translocations. The term "mutation" refers to an organism's abrupt, stable, discontinuous, and inheritable alterations brought on by a permanent change in genotype.
Normally, a genetic mutation modifies the messages that are sent by a gene. Just the number of positions of genes that are already present are changed by chromosomal mutation.
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what type of structures modify and distribute polypeptides through the cell"
Answers
Answer:
Quaternary structure
Explanation:
Quaternary structure insinuates the number and game-plan of the individual polypeptide chains. Each polypeptide is suggested as a subunit of the protein. Comparative powers and bonds that make tertiary structure moreover hold subunits together in a consistent eccentric to shape the complete protein.
in mice, black fur (b) is dominant to white (b). at a different locus, a dominant allele (a) produces a band of yellow just below the tip of each hair in mice with black fur. this gives a frosted appearance known as agouti. expression of the recessive allele (a) results in a solid coat color. if mice that are heterozygous at both loci are crossed, what is the expected phenotypic ratio of their offspring?
Answers
In mice bearing black fur, a dominant nucleotide (A) causes a ribbon of yellow to appear immediately below the tip within each hair at a separate locus. Agouti, a kind of frosted appearance, results from this.
What do hairs do?The spindle and thus the hair shaft are two separate components of hair, a descendant of the epidermis. The ovary is the fundamental building block for the production of hair.
What do hair and hair mean?Although it has a simple structure, hair is quite important in social contact. Hair is made of the strong protein keratin. A hair follicle serves as the anchor for each hair on the skin. The hair bulb constitutes the base of the epidermis. The hair shaft is made in the strands bulb by the differentiation and expansion of living cells.
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A mother hawk screeches as screech at 800 Hz, but you hear the biology that female hawks screech at 800 Hz, but you hear the screech at 900 Hz. How fast is the hawk approaching?
Answers
The hawk is approaching at a speed of approximately 17.1 meters per second (m/s).
This question relates to the Doppler effect, which describes the change in frequency of a sound wave due to the relative motion between the source of the sound and the observer.
In this case, if the mother hawk screeches at 800 Hz, but you hear the screech at 900 Hz, it indicates an increase in frequency. According to the Doppler effect, an increase in frequency occurs when the source of the sound is moving towards the observer.
By applying the Doppler effect formula, the ratio of observed frequency to the actual frequency can be used to determine the relative velocity between the hawk and the observer. In this case, the observed frequency is 900 Hz and the actual frequency is 800 Hz.
Using the formula, v = (f_observed - f_actual) / f_actual * c, where v is the velocity, f_observed is 900 Hz, f_actual is 800 Hz, and c is the speed of sound (approximately 343 m/s), the calculated velocity is approximately 17.1 m/s. Therefore, the hawk is approaching at a speed of approximately 17.1 m/s.
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A biology student examined a prepared slide of onion root tip cells involved in various stages of the cell cycle as shown below. The lab required the student to use a microscope to identify and count the cells in each of the phases of cell division. Which of the statements below are true about the cell cycle?
A. Clinton animals go through the cell cycle for growth and the replacement of cells .
b. interphase is the longest phase in the cell cycle
c. all of the above are true statements
d. chromosome DNA replication takes place during interface
Answers
Answer:
B. Interphase is the longest phase in the cell cycle
all the alleles present in all individuals in a species are referred to as the _____ of that species.
Answers
All the alleles present in all individuals in a species are referred to as the gene pool of that species.
In the field of population genetics, the gene pool is the total set of genes and their variations that exist within a population of a particular species. The gene pool includes both dominant and recessive alleles and all of the various genotypes that can be produced from them.Gene pool can vary from one population to another, and they can change over time within a population due to various factors such as natural selection, genetic drift, gene flow, mutation, and other factors.
The size and diversity of the gene pool are crucial to the survival and evolution of a species. A larger gene pool provides a greater potential for genetic variation and adaptability to changing environmental conditions. In contrast, a smaller gene pool may reduce the ability of a population to adapt to new challenges and increase the risk of genetic diseases and other issues. So therefore gene pool is all the alleles present in all individuals in a species of that species.
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glucose is broken down during cellular respiration to produce which short term, high energy molecule?
Answers
Answer:
ATP
Explanation:
Living cells break down glucose molecules, release energy, and form molecules of ATP.
ncbi Phylogeny and temporal diversification of mosquitoes(Diptera: Culicidae) with an emphasis on theNeotropical fauna
Answers
Understanding phylogenetic relationships in the own circle of relatives Culicidae informs mosquito evolution and can have public fitness implications as this own circle of relatives consists of severa species of clinical and veterinary importance.
We investigated the mitochondrial genomes of 102 mosquitoes, which include six newly sequenced species, representing 21 genera with an emphasis at the Neotropical region.
We predicted divergence instances primarily based totally on collection facts and 3 fossil calibration points, the usage of Bayesian comfortable clock methods. Bayesian and maximum-probability phylogenetic analyses primarily based totally at the DNA sequences of thirteen PCGs of the 102 species supplied strong assist for the monophyly of the subfamily Anophelinae and the tribes Aedini, Culicini, Mansoniini and Sabethini. Despite the present day genera of Anophelinae being continually recovered as monophyletic, relationships amongst them proved to be pretty variable relying at the technique used (concatenated or partitioned) and the variety of taxa sampled.learn more about phylogenetic:https://brainly.com/question/13577065
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Which would best be described as abiotic?
water in a stream
Ofish in a stream
O bacteria in the soil
roots in the soil
Answers
а.
Which of the following influenced Darwin's theory?
Observing that more organims are born than c. Observing the effects of artificial selection
survive
b. Studying the fossil record.
d. All of the above
Please select the best answer from the choices provided
A
OD
Answers
Answer:
More organisms are born than can survive.
Explanation:
The somatic cell of a rat contains 42 chromosomes (2=42). How many chromosomes and how many dna molecules would the secondary spermatocyte of this rat have?
Answers
There are the same number of chromosomes and DNA molecules in this rat's main spermatocyte cell as in its somatic cell (42 chromosomes). This is due to the fact that primary spermatocytes are still diploid because they have not experienced meiosis to form secondary spermatocytes (2n).
What is meiosis?In sexually reproducing organisms, meiosis is a unique type of cell division of germ cells that results in the production of gametes, such as sperm or egg cells. It comprises two rounds of division, producing four cells with only one copy of each chromosome as a final product (haploid).
Additionally, each chromosome undergoes genetic material cross-pollination between the paternal and maternal copies before division, resulting in novel combinations of the genetic code on each chromosome. Later, when a male and a female go through meiosis, the haploid cells they generate unite to form the zygote, another cell with two copies of each chromosome.
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consider regulation by both the lac repressor and cap (catabolite activator protein), under what environment does the e. coli show a high level of transcription of the lac operon?
Answers
The regulation of transcription by the lac repressor and cap under what environment does the E. coli show a high level of transcription of the lac operon. The E. coli shows a high level of transcription of the lac operon in the absence of glucose and presence of lactose.
The lac operon is one of the most frequently analyzed operons in E. coli which involves in the catabolism of lactose.Lac operon is composed of an operator, a promoter, and three structural genes: lacZ, lacY, and lacA. The lac repressor and cap proteins regulate the expression of the lac operon in E. coli.
The lac repressor is a protein that blocks the transcription of the structural genes (lacZ, lacY, and lacA) by binding to the operator site in the absence of lactose. In the presence of lactose, it cannot bind to the operator site due to the formation of an inducer-lac repressor complex, which allows RNA polymerase to transcribe the genes.
The cap (catabolite activator protein) is a protein that binds to the promoter site of the lac operon, allowing RNA polymerase to bind to the promoter site to initiate transcription. The presence of glucose inhibits the production of cAMP, which is necessary for the activation of the cap protein.
Therefore, the expression of the lac operon is regulated by the presence of glucose and lactose, which acts as an inducer for the operon. In the presence of lactose and absence of glucose, the lac operon is highly expressed, resulting in the production of the enzymes required for lactose metabolism.
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a heterozygous dominant-negative mutation in the coiled-coil domain of stat1 is the cause of autosomal-dominant mendelian susceptibility to mycobacterial diseases
Answers
The statement describes a specific genetic mutation that causes a condition known as autosomal-dominant Mendelian susceptibility to mycobacterial diseases.
What is this mutation?The Signal Transducer and Activator of Transcription 1 protein, which is produced by the STAT1 gene, is essential for the immune system. It participates in the signaling pathways that trigger the activation of genes in response to the immune-stimulating chemicals known as cytokines.
The STAT1 protein's coiled-coil domain is in charge of protein-protein interactions, which are essential for STAT1's correct operation in cellular signaling.
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Missing parts;
What is a heterozygous dominant-negative mutation in the coiled-coil domain of stat1 is the cause of autosomal-dominant mendelian susceptibility to mycobacterial diseases?
How Clark Developed Seizures
The following list is not in the correct order. The first three events are numbered correctly. Drag and drop the
remaining events in the order that led to Clark's seizures.
picture above for the order.
Answers
Answer:
4. Low blood sodium concentration
5. Net movement of free water into the matrix
6. Increased matrix pressure
7. Abnormal neuron firing rate
8. Seizures
Explanation:
Seizures are defined as the common complication of drug intoxication.
As per the clinical observations for Clark , normal blood and matrix sodium concentration lose sodium ions due to diarrhea. As given too much water causes sodium levels to decrease. Due to lower sodium concentration, the free water move into the matrix and increased matrix pressure. This pressure causes the abnormal neuron firing rate to increase which causes seizures.
Hence, the correct order is:
4. Low blood sodium concentration
5. Net movement of free water into the matrix
6. Increased matrix pressure
7. Abnormal neuron firing rate
8. Seizures
where do the excited electrons flowing through photosystem ii originally come from? a) antenna complex
b) O2
c) sunlight
d) H2O
Answers
The excited electrons flowing through photosystem II originally come from water (H2O). So, the correct answer is option D.
Photosystem II is the first step in the light-dependent reactions of photosynthesis, where the absorption of light energy leads to the excitation of electrons in the pigment molecules of the antenna complex. The excited electrons are then passed to the reaction center of photosystem II, where they are replenished by the electrons extracted from water molecules during the process of photolysis. As a result, oxygen (O2) is released as a byproduct of this process.
In summary, the excited electrons flowing through photosystem II originally come from water molecules, which are split during photolysis to replenish the electron supply and release oxygen.
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Which two inferences could be drawn from the statistics represented in the graph?
A.) Plants are not processing carbon dioxide as they used to in the past.
B.) Recent industrialization and urbanization are likely to have increased carbon dioxide levels.
C.) The spike in carbon dioxide levels is permanent, and nothing can be done to fix it.
Within the next few years, carbon dioxide levels will naturally decrease to a normal level.
D.) The carbon dioxide levels will continue to rise in the absence of conservation efforts.
E.) The carbon dioxide levels will continue to rise in the absence of conservation efforts.
Answers
Answer:
D.) The carbon dioxide levels will continue to rise in the absence of conservation efforts.
Explanation:
If conservation measures are not implemented, the graph's growing trend in carbon dioxide levels implies that the level of CO2 will continue to climb in the future.
Answer:
2 and 5 (picture is attached)
Explanation:
hope this helps!
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Answers
Answer:
Weather: "Hurricane", "Lightening", "Tornado", "A pattern of changes happening around the world over many years", "Tells you how to dress for that day", "Heat wave", "Specific event or condition that happens over a period of hours or days", "Short Term", "A thunderstorm, a snowstorm, and today's temperature", "Include wind, temperature, humidity, atmospheric pressure, cloudiness, and precipitation", "The condition of the atmosphere at a particular place and time".
Climate: "The average weather conditions in a place over many years", "Highly variable day to day, and from one year to the next", Minneapolis is cold and snowy in the winter, while Miami's is hot and humid", "Tells you what wardrobe to own", "Usually taken over 30 plus years", "Annual Rainfall", "Drought", "Long Term", "Ice Age", "Determined by lattitude, bodies of water and altitude".
Explanation:
skin is an organ ? I’m confused can someone explain this?????
Answers
Answer:skin is the biggest organ on your body :)
Explanation:
Answer:
Yes
Explanation:
It's an organ
because we have the following
\(cell\rightarrow\:tissues\rightarrow\:organs\)
it's an organ because it's a "set" of tissues
the epidermis
the dermis
ect.
what do you call humid air mass that forms over water in cold areas?
Answers
A segment of RNA has the sequence AUU. What explanation can be made about how this codon came to be?
A
The RNA strand formed from the rearrangement of the bases in a DNA strand.
B
The RNA strand broke off from a DNA strand that had a much longer genetic code.
C
The RNA codon was transcribed from a DNA strand with the sequence TAA.
D
The RNA codon was transcribed from a DNA strand that had the sequence UAA.
Answers
Answer:
C - The RNA codon was transcribed from a DNA strand with the sequence TAA.
Explanation:
transcription describes the process by which a strand of mRNA is coded for by the protein RNA polymerase taking RNA bases and matching them in complimentry with the DNA bases
what happens when you start to go deeper into the atlantic ocean in your own words please?
Answers
Answer:
the density of the water will keep crushing you until you are DEAD
Explanation:
Answer:
not sure if you still want an answer, but here:
the further down you go, the colder it'll get because the sunlight won't reach down as far, also making it darker. the pressure will also keep building up until it gets to be too much for your body to handle and literally crushes you.
scientists found fossils of 2 animals belonging to same species but occupy different regions. how is that possible?
a) animals migrated
b) they all roamed what was once one big continent
c) someone spread the fossils
d) a natural disaster forced them to seperate
Answers
The possibility that explains the presence of fossils of the same species in different regions is that the animals migrated. The correct answer is A.
Migration is a common phenomenon observed in various animal species. Animals move from one region to another in search of food, suitable habitats, or favorable environmental conditions.
This movement allows them to adapt to different environments and exploit available resources. As animals migrate, they can leave behind fossils in the regions they previously inhabited.
When animals belonging to the same species migrate to different regions, their populations become geographically separated.
Over time, the separated populations may undergo different evolutionary pressures, leading to the development of distinct traits and adaptations.
These changes can eventually result in the formation of different subspecies or even new species. Fossil evidence of the same species found in different regions supports the idea that migration played a role in the dispersal and distribution of these animals.
Therefore, the presence of fossils of the same species in different regions is indicative of past migration events and the subsequent divergence of populations. Therefore, the correct answer is A.
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