Answer: High tryptophan: The tryptophan binds to the trp repressor and causes it to change shape, converting into its active (DNA-binding) form. The trp repressor with the bound tryptophan attaches to the operator, blocking RNA polymerase from binding to the promoter and preventing transcription of the operon.
Explanation:
Homologous chromosomes may exchange segments; this is called crossing over. crossing over increases genetic variability. when does crossing over occur?
A trade of chromosome segments among non-sister homologous chromatids happens and is referred to as crossing over.
Crossover happens while chromosomes, usually homologous times of the equal chromosome, spoil after which reconnect however to the specific quit piece. If they spoil on the equal location or locus withinside the collection of base pairs, the end result is an trade of genes, referred to as genetic recombination.
What are homologous chromosome?Homologous chromosomes are made from chromosome pairs of about the equal length, centromere position, and marking pattern, for genes with the equal corresponding loci.
Thus it s well expalined.
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give one disadvantage of having a large number of stomata per mm squared of leaf surface
Answer:
The downside to wide open stomata is increased water loss (transpiration). So stomata of cool-season turfgrasses have decisions to make. The plant needs to capture and store energy via photosynthesis, however, excessive water loss through transpiration can result in plant injury or death.
One disadvantage of having a large number of stomata per mm squared of leaf surface might be the excessive loss of water.
What are stomata?Stomata are specialized plant structures used to exchange gases such as oxygen and carbon dioxide.
The plant structures (stomata) are especially located on the leaves where photosynthesis mainly occurs.
In conclusion, one disadvantage of having a large number of stomata per mm squared of leaf surface might be the excessive loss of water.
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If the DNA is GGC ATC CAG, what is the corresponding mRNA?
Answer:
CCG UAG GUC
Explanation:
The complementary mRNA strands for DNA are shown below.
G = C
A = U
C = G
T = A
U = A
Using this, we can conclude that the corresponding mRNA is CCG UAG GUC.
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To increase the absorption of nonheme iron in beans, you can eat a food with _____ alongside the beans
To increase the absorption of nonheme iron in beans, you can eat a portion of food with vitamin C alongside the beans.
What are vitamins?Vitamins are certain micronutrients that may help to absorb other nutrients (e.g., minerals) in the body.
Vitamins are micronutrients that can be classified as fat-soluble vitamins and water (hydrophilic) soluble vitamins.
Vitamin C is required for the formation of blood vessels, muscle and cartilages in the body.
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Based on the food web shown, which organism is the primary consumer?
Answer:
The grass hopper, rabbit, and the slug are primary consumers.
Explanation:
They are all herbavores and at the second lowest part of the food web (the first being the grass
In the 1950s, the structure of dna was discovered by using models and x-ray chromatography. currently, science has used advanced technology to completely map out the genes in a human’s body. what would be the best advantage of using this information? gene therapy to correct defective genes that cause diseases gene therapy to remove bacteria from the soil more communicable diseases fewer communicable diseases
The best advantage of using this information is that gene therapy to corrects defective genes that cause diseases.
What do you mean by Gene therapy?
Gene therapy may be defined as a process of altering the genes inside your body's cells in an effort to treat or stop the disease.
Gene therapy refers to the methodology that implicates the introduction of nucleic acids (DNA or RNA) into the cells of an organism for the pursuit of correcting abnormalities and irregularities, such as a mutation or in other words to treat genetic diseases and disorders.
Therefore, the best advantage of using this information is that gene therapy to corrects defective genes that cause diseases.
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How do vaccines work if the pathogen in them is dead?
Answer:
Inactivated vaccines use the killed version of the germ that causes a disease.
Inactivated vaccines usually don't provide immunity (protection) that's as strong as live vaccines. So you may need several doses over time (booster shots) in order to get ongoing immunity against diseases.
Explanation:
Are there any parts of the human body that get oxygen directly from the air and not from the blood? Are there nuclear reactions going on in our bodies?
Answer:
The cornea is the only part of a human body that has no blood supply; it gets oxygen directly through the air. The cornea is the fastest healing tissue in the human body, thus, most corneal abrasions will heal within 24-36 hours.
Nuclear reactions do indeed occur in the human body, but the body does not use them.
What is the twisted zipper shape of DNA called?
Answer:
[tex]I~am~beinggreat78~and~will~help~you![/tex]
The shape of DNA is called a Double Helix. This shape is often referred to as a, "spiral staircase".
Suppose a new resort hotel is built on a hawksbill sea turtle nesting site, and hotel guests start removing the queen angelfish from the nearby reef to stock their home aquaria. If the hawksbill sea turtles and queen angelfish are removed, which organism is most likely to benefit?.
Answer:
Sponges, Anemones, Squid and Shrimp.
Explanation:
Those are the organisms that the sea turtle feed on.
Sponges, Anemones, Squid and Shrimp are most likely to benefit since the sea turtles and angelfish feed on them.
What happens if hawksbill sea turtles and queen angelfish are removed?Hawksbills contribute to the preservation of coral reef health. Reef fish have easier access to food because they clear sponges and other prey off the reef's surface. They are also valuable for tourism and have cultural significance.
Queen angelfish are omnivores that primarily eat algae and sponges. They are opportunistic and will consume jellyfish, soft corals, and sea fans. Young fish clean larger kinds of fish by removing parasites from their skin so that they can be eaten.
The populations of the organisms that Hawksbill Sea Turtles and queen angelfish consume, such as sponges and sea urchins, would probably explode if they became extinct. This would result in widespread erosion and possibly the collapse of marine ecosystems like coral reefs.
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What part of the nucleotide connects in
the middle of the molecule and makes up
the "steps" of the ladder?
Answer: The inside of the molecule, the "steps" of the staircase, are made of the nucleotide bases Cytosine, Guanine, Adenine, and Thymine. C bonds to G by three hydrogen bonds. A bonds to T by two hydrogen bonds. A and G are double ringed structures called "purines".
Explanation:
Which of the following phrases incorrectly finishes this statement? a genetic disease that causes death in infancy and has an autosomal recessive inheritance pattern can persist in a population because.
The phrase which incorrectly finishes this statement is that if both parents are carriers, they have a 50% chance of having normal children.
What is an Autosomal recessive disorder?This is the type of disorder which involves two copies of the mutation being sufficient enough to cause the disease.
If both parents are carriers, then the chance of having normal children is zero and not 50 percent.
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How does the number of cell layers play a role in the function of an epithelial tissue?
Answer:
Epithelial tissues are widespread throughout the body. They form the covering of all body surfaces, line body cavities and hollow organs, and are the major tissue in glands. They perform a variety of functions that include protection, secretion, absorption, excretion, filtration, diffusion, and sensory reception.
What if all the micro organisms go on leave for few days.
Explanation:
Hey mate here's your answer :-
The entire food webs of these dark, abyssal worlds would collapse. Shallower oceans would fare little better. Corals, which depend on microscopic algae and a surprisingly diverse collection of bacteria, would become weak and vulnerable.The color yellow (Y) is a dominant trait. The color green (y) is a recessive trait. If a pure yellow pea (YY) mates with a pure green pea (yy), what will the offspring look like?
A. All yellow
B. All green
C. 1/2 yellow 1/2 Green
D. 3/4 blue 1/4 yellow
Answer:
A) All yellow
Explanation
If the hom ozygous dominant ma tes with the hom oz ygous recessive, 100% of offspring will be he tero zygous and express the dominant trait. Looking at the help image below, all offspring will be he teroz ygous and e xpress the yellow color trait.
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Which piece of evidence did darwin observe during his 5-year journey aboard the hms beagle?.
Which one below will end up being expressed in the protein?
a) Intron
b) Exon
c) Transcription factor
d) Terminator
e) Promoter
Exons are the DNA fragments that get to be transcripted and translated into proteins. Option b) Exons end up being expressed in the protein.
What are introns and exons?Even though more than 70% of the DNA is related to genes, just a part of the genes is translated to proteins. Most genes have DNA segments that are not transcripted or translated intercalated with segments that are translated.
Introns are non-encoding sequences that produce interruptions in a eukaryotic gene. Exons are the encoding sequences. Exons are the nucleotidic sequences that do codify proteins.Most of the eukaryotic, multicellular genes contain introns in their sequences, intercalated with exons.
Introns are transcripted to mRNA molecules and get excised before translation by a specific mechanism. This occurs before the mRNA leaves the nucleus. The introns are excised and the exons must splice to form a unique molecule. This process is known as splicing.
Exonic sequences are the fragments that are transcripted and translated into proteins.
The correct option is b). Exons end up being expressed in the protein
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I really need help pls! This is the question...
A sample of iron has dimensions of 2 cm x 4 cm x 6 cm and a mass of 100g. What is the density of the sample?
A circumpolar constellation can be seen ____________
Answer:
Ursa Minor
Explanation:
Select the correct answer. a patient has a history of poor nutrition. he has skin rashes, bleeding gums, and a cut that hasn’t healed in a long time. what vitamin deficiency most likely caused these symptoms? a. vitamin a b. vitamin b6 c. vitamin b12 d. vitamin c e. vitamin e
A patient has a history of poor nutrition. he has skin rashes, bleeding gums, and a cut that hasn’t healed in a long time. what vitamin deficiency most likely caused these symptoms vitamin c.
Which disease is caused by vitamin B6?Vitamin B6 deficiency causes peripheral neuropathy and a pellagra-like syndrome, with seborrheic dermatitis, glossitis, and cheilosis, and, in adults, can cause depression, confusion, electroencephalogram abnormalities, and seizures.
Thus, the correct option is "D".
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Answer:
D. Vitamin C
Explanation:
PLATO
1. Identify the compounds produced by the epidermis to protect against invasion.
Keratin is referred to the compounds produced by the epidermis to protect against invasion.
What is Epidermis?This is referred to the outermost layer of the skin and produces compounds such as keratin etc.
The keratin is responsible for the toughness of the skin and helps to prevent it from invasion of any kind.
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Some enzymes act with the assistance of a non-protein component. This component is called a ; if that component is an organic molecule it can be called a
Some enzymes act with the assitance of a non-protein component and this component is called : Cofactor If the component is an organic molecule it can be called a : Coenzyme
What are EnzymesEnzymes are proteinous organic catalyst present in living organisms that regulates/determines the rate at which a chemical reaction occurs in an organism, but not used up in the process. A no-protein component that assists an enzyme in the process is known as a cofactor.
Hence we can conclude that ome enzymes act with the assitance of a non-protein component and this component is called : Cofactor If the component is an organic molecule it can be called a : Coenzyme.
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In multicellular organisms, the process of cell division leads to _________.
A. a decrease in cell number
B. an increase in cell number
C. the death of many cells
D. a destruction of all cells
Answer:
B. An increase in cell numbers
Explanation:
It adds more cells for cell divison they increase in numbers.
-Hope This Helps!
-Justin:)
Answer:
B. Increase in cell Number
Explanation:
Cell divisision is the process in which a cell divides itself to create new cells. Therfore increasing the cell number.
How does continental drift theory explain extinction of organisms?
Answer:
He argues that the “dance of continents”-the break-up, movement, collision and re-formation of continents through time-creates the basic geographic and climatic conditions which drive the decline and extinction of species.
Explanation:
What color is reflected back to cause plants to appear green?
Answer:
Chlorophyll gives plants their green color because it does not absorb the green wavelengths of white light. That particular light wavelength is reflected from the plant, so it appears green.
Explanation:
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The color that is reflected back to cause plants to appear green is the color green, as that is reflected back, the eyes can capture it, and as a result, the plants appear to be green.
What is the reason behind plants being green?Plants are green because of the presence of chlorophyll, a pigment found in plant cells. and this green color from sunlight is reflected back to the environment, and chlorophyll is crucial for photosynthesis, the process by which plants convert sunlight into energy, Photosynthesis occurs in specialized organelles within plant cells called chloroplasts. This absorbs light energy from the sun, and the absorbed energy is then used to power a series of chemical reactions that convert carbon dioxide and water into glucose, a form of sugar that the plant can use for energy.
Hence, the color that is reflected back to cause plants to appear green is the color green.
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Differentiate between parasitic and saprophytic plants with examples.
Answer:
A parasitic plant is a plant that derives some or all of its nutritional requirement from another living plant.
Answer:An organism, especially a fungus or bacterium, that grows on and derives its nourishment from dead or decaying organic matter. Example: parasitic plants: viscous album, cuscuta campestris, Orobanche ramosa etc . Example: Mushrooms and moulds, Indian pipe, Corallorhiza orchids, and Mycorrhizal fungi etc.
What is the purpose of spindle fibers during mitosis?
divide the cell in half
organize centrioles
separate sister chromatids
split the nuclear envelope
Answer:
I think the answer Is divide the cell in half and see the explanation
Explanation:
Spindle fibers form a protein structure that divides the genetic material in a cell. The spindle is necessary to equally divide the chromosomes in a parental cell into two daughter cells during both types of nuclear division: mitosis and meiosis
Write the sequence of the mRNA strand that would be coded from the following strand of DNA:
TACCGAATTCGC
Please help me with this!!!
Answer:
DNA: TACCGAATTCGC
mRNA: AUGGCUUAAGCG
RNA: A=U, T=A, G=C
RNA contains Uracil and Thymine is no longer present
write three type of human blood vessle with their functon
Answer:
hope it helps
Explanation:
There are three types of blood vessels:
Arteries carry blood away from your heart.Veins carry blood back toward your heart.Capillaries, the smallest blood vessels, connect arteries and veins.
Compare the relationship between carrying capacity and limiting factors
Answer:
The maximum population size that an ecosystem can support is called carrying capacity. Limiting factors determine carrying capacity. The availability of abiotic factors (such as water, oxygen, and space) and biotic factors (such as food) dictates how many organisms can live in an ecosystem.
Explanation:
