Help please
#1 The term "endosymbiotic" means...
A. inside and helping each other
B. inside and attacking another
C. outside and attacking another
D. outside and helping each other
#2 The most difficult step for science to explain about how early life formed is...
A. how molecules could self replicate.
B. how selectively permeable membranes formed.
C. how organic molecules formed.
D. how nucleic acids like DNA began working with amino acids to make proteins.
Answers
Answer:
#1 [A. inside and helping each other
#2 [D. how nucleic acids like DNA began working with amino acids to make proteins
Related Questions
Which of the following best represents the amino acid sequence found in normal adults with the HBB gene?
- His, Gly, Asp, Gly, Gin, Leu. Leu
- Val, His, Leu, Thr, Pro, Glu, Glu
- Val, Gly, Asp. Thr, Pro, Glu, Glu
- Leu, Glu, Asp, Gly, Gin, Leu, Leu
Answers
The sequence 'Val, His, Leu, Thr, Pro, Glu, Glu' best represents the amino acid sequence found in normal adults with the HBB gene.
What is a mutation?A mutation is any alteration in the genetic material of an organism, which can alter the protein that is commonly synthesized.
A missense mutation is a type of mutation that alters the amino acid sequence during translation.Moreover, the HBB gene is a gene required to produce hemoglobin, which is a fundamental protein to transport oxygen in the blood.In conclusion, the sequence 'Val, His, Leu, Thr, Pro, Glu, Glu' best represents the amino acid sequence found in normal adults with the HBB gene.
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Which person is least likely to be concerned about potential long-term side
effects of genetically modified (GM) food?
A. A wealthy mother
B. The owner of an organic farm
C. A biology researcher
D. A child who is starving
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How are prokaryotes and eukaryotes the same
Answers
Answer:
Both have selectively permeable plasma membranes surrounding their cells which act as barriers for entering molecules.
Both carry ribosomes for protein synthesis
Both have a semi fluid jelly like substance called cytosol ( cytoplasm) in which subcellular organelles are suspended in.
Both carry DNA as their genetic material
if the alle B represents black fur and
alle b represents white fur what would be the genotype of animal with white fur
Answers
And for black fur to be present you would need a genotype of either Bb or BB.
Answer:
The genotypes would have to be "bb".
Explanation:
If the dominant allele B is present in a genotype (a genotype is the two letters to represent the trait) then the organism will always be black.
BB= black
Bb= black
bb= white. This is because there is no "B" to dominate the genotype.
Please give me brainiest I am trying to get one !!!!
help i need help help me
Answers
Answer:
horsetail is a seedless vascular plant
club moss is a seedless vascular plant
Fern is a seedless vascular plant
Moss is a non vascular plant
Liverwort is a non vascular plant
Hornwort is a non vascular plant
Does metamorphosis occur in thyme plant's life cycle?
Answers
Answer:
In addition, although the term metamorphosis is generally not applied to plants
Answer:
i dont think so
Explanation:
What characteristics of eukaryotic cell gives them greater capacity for specialization than prokaryotic cells?Explain your answer.
Answers
Answer:Eukaryotic cells are generally much larger than prokaryotic cells, frequently having a cell volume at least a thousandfold greater. The compartmentalization provided by cytoplasmic organelles is what allows eukaryotic cells to function efficiently.
Explanation:
protein denaturation can be brought about by all of the following except:
Answers
Protein denaturation can be brought about by all of the following except cooling the protein.
Protein denaturation is the breakdown or unfolding of a protein's structure, which results in the loss of its functional capabilities.
Denaturation can be triggered by a variety of circumstances, including heating the protein, exposing it to a strong acid, and treating it with disulfide bond-breaking chemicals.
These circumstances have the potential to disturb the non-covalent interactions and disulfide bonds that contribute to the folded structure of the protein.
As a result, chilling the protein is an exception among the mentioned choices because it is not a factor that generally causes protein denaturation.
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Your question seems incomplete, the probable complete question is:
Protein denaturation can be brought about by all of the following except: cooling the protein heating the protein placing the protein in a strong acid, which disrupts hydrogen bonding treating the protein with compounds that break disulfide bonds
3. How does the function (or job) of dystrophin change when the structure changes?
Answers
Answer:
Individuals with BMD genetic mutations make dystrophin that is partially functional, which protects their muscles from degenerating as badly or as quickly as in DMD. The dystrophin protein transfers the force of muscle contraction from the inside of the muscle cell outward to the cell membrane.
Explanation:
Muscular dystrophy is a sex-linked recessive disorder that causes the muscles to slowly weaken. Which of the following circumstances would a male child most likely show the trait coded for by the recessive allele?
Group of answer choices
A recessive allele is located on a autosomal chromosome.
A dominant allele is found on the Y chromosome.
A dominant allele is inherited from the father.
A recessive allele is inherited on the X gamete.
Answers
For a se_x-linked recessive disorder such a s muscular dystrophy to occur in a male child, a recessive allele is inherited on the X gamete
What are se_x-linked recessive disorders?Se_x-linked recessive disorders are disorders which occurs as a result of a defective gene found on the X chromosomes.
Se_x-linked recessive disorders are usually present on the X-chromosomes and affects mostly boys because they receive their X-chromosomes from their mothers.
For a se_x-linked recessive disorder such a s muscular dystrophy to occur in a male child, a recessive allele is inherited on the X gamete.
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By what molecular mechanism does CAP protein activate lac operon transcription?
(A)CAP helps recruit RNA polymerase to the promoter due to an allosteric interaction with RNAP when glucose levels are low and lactose levels are high.
Answers
The catabolite activator protein (CAP) is a regulatory protein that activates the transcription of the lactose (lac) operon in bacteria by binding to a specific DNA sequence in the promoter region of the operon.
The lac operon encodes enzymes that are involved in the metabolism of lactose and related sugars.
Under low glucose and high lactose conditions, cyclic AMP (cAMP) levels increase in the cell. CAP binds to cAMP, which causes a conformational change in the protein, enabling it to bind to a specific DNA sequence upstream of the lac operon promoter, known as the CAP binding site.
The binding of CAP to the CAP binding site induces a conformational change in the DNA, which facilitates the binding of RNA polymerase (RNAP) to the promoter region. This allows RNAP to initiate transcription of the lac operon genes.
CAP acts as a positive regulator of lac operon transcription by enhancing the recruitment of RNAP to the promoter region in response to increased levels of lactose. When glucose is low, the cell must rely on lactose for energy, and the activation of the lac operon by CAP ensures that the necessary enzymes are produced to metabolize lactose efficiently.
Overall, the activation of lac operon transcription by CAP involves an allosteric interaction between the protein and cAMP, which enables CAP to bind to the CAP binding site and induce a conformational change in the DNA, facilitating the recruitment of RNAP to the promoter region and initiating transcription of the lactose metabolic genes.
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Cells that do not have clearly defined nucleus and no organized chloroplasts, mitochondria, or other organelles are
O Eukaryotic
ukaryotining
O Prokaryotic
Plants
O Fungi
Animals
Answers
Answer:
One of the main differences between prokaryotic and eukaryotic cells is the nucleus. Prokaryotic cells lack an organized nucleus while eukaryotic cells contain membrane-bound nuclei (and organelles ) that house the cell's DNA and direct the synthesis of ribosomes and proteins.
In Fast Plants Green leaves are dominant, yellow are recessive:
Cross two heterozygous green leaf fast plants, and match the phenotype and genotype with the probable outcome.
This is just like Mendel's experiment crossing two Hybrid Tall pea plants and seeing the recessive short gene show up
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Students may investigate the features Mendel tested and then cross two pea plants to observe what offspring they create in this area of the online lab.
Mendel's experiment:
"Plant five pea plants and see what they look like," Mendel advises pupils. The animated Mendel plants and waters five pea plants when students click the "Plant" button. Each pea plant shoots quite fast. The learner may view the pea pod's color, shape, and form, as well as the color and form of the mature seed, by moving the pointer over the plants.
Although the plants are selected at random each time the application is run, all of the numerous varieties of pea plants may be observed in these growing peas. Mendel quizzes the pupils on how many distinctive characteristics they notice in the plants after they have grown five plants
He shows there are seven distinct qualities :
Pea form (round or wrinkled)Pea green (green or yellow)Shaped like a pod (constricted or inflated)Pod hue (green or yellow)floral hue (purple or white)plant height (tall or dwarf)Arrangement of flowers (axial or terminal)They can cross any plant with itself or with another plant using the five plants they raised. The way that qualities are passed down to future generations may start to show certain patterns to students. They might know, for instance, that a plant with white flowers crossed with itself or another plant with white flowers will only produce plants with white flowers, whereas a plant with purple flowers crossed with itself or another plant with purple flowers will occasionally produce plants with white flowers. You could discover that by encouraging students to focus on specific characteristics during their experiments, they start to see these patterns on their own.
Hence, all about Mendel's experiment
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A substitution mutation occurred and changed the 5th base in the DNA from a C to a T. Write the sequence of RNA codons that would result from this kind of mutation. **Separate each codon with a space. TACACGCAATTACCAGGGTAGCCATTGATT
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The sequence of RNA codons resulting from the substitution mutation that changed the 5th base in the DNA from a C to a T is AUGUGCGUUAUCCAGGGUAGCCAAUUGA.
In DNA, the base C (cytosine) pairs with G (guanine), while in RNA, the base C pairs with G. However, due to the substitution mutation, the original C is replaced by a T (thymine) in the DNA sequence.
In RNA, thymine is replaced by uracil (U). Therefore, the RNA codons corresponding to the mutated DNA sequence can be derived by replacing each T with U and maintaining the sequence order.
The original DNA sequence TACACGCAATTACCAGGGTAGCCATTGATT would have the corresponding RNA codons AUGUGCGUUAUCCAGGGUAGCCAAUUGA. Each codon consists of three bases and represents a specific amino acid or a start or stop signal in the translation process of protein synthesis.
It's important to note that the given DNA sequence is provided as a single continuous string, and without additional information about the reading frame or specific gene sequence, it is not possible to determine the precise protein sequence or the functional implications of the mutation.
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The adaptations of a pelican include its long, pouch-like beak. Why is the beak of the pelican an example of an adaptation?
A.
The beak is a unique feature that is found only in pelicans.
B.
All birds have beaks, but the beaks vary among different species.
C.
The shape and structure of the beak have remained the same over many generations.
D.
The shape and structure of the beak are inherited and help the pelican survive in its environment
Answers
Answer:
D. The shape and structure of the beak are inherited and help the pelican survive in its environment
Explanation:
Hope this helps!
According to the conceptual model of optimal foraging, as foraging effort increases:
a. net energy gain increases linearly.
b. the profitability of the food item increases.
c. the total energy obtained eventually becomes negative.
d. cumulative energy investment in foraging increases at a constant rate.
Answers
According to the conceptual model of optimal foraging, as foraging effort increases, **the profitability of the food item increases**.
The optimal foraging theory suggests that organisms maximize their energy intake while minimizing the energy expended during foraging. As foraging effort increases, individuals are likely to target more profitable food items that offer higher energy gain relative to the energy invested in obtaining them. This can involve selecting food sources that are more abundant, easier to capture, or require less time and energy to handle and consume. By prioritizing more profitable food items, organisms can enhance their overall energy gain and maximize their foraging efficiency.
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a paralysis that is limited to one arm would be called: unilateral. bilateral. multilateral. tetralateral.
Answers
Most frequently, injury to the neurological system, specifically the spinal cord, results in paralysis. Hence the answer is a paralysis that is limited to one arm would be called unilateral.
Additional significant causes include multiple sclerosis, spina bifida, poliomyelitis, stroke, trauma inflicting nerve damage, cerebral palsy, peripheral neuropathy, Parkinson's disease, ALS, and Guillain-Barré syndrome. Temporary paralysis occurs during REM sleep, and paralysis spells can occur when this system is dysregulated throughout the day. Additionally, medications like curare that disrupt nerve activity may result in paralysis. A purposeful restriction or inhibition of mobility caused by pain, clumsiness, orgasm, or any other cause other than real muscular paralysis is known as pseudoparalysis. It might be a sign of congenital syphilis in a newborn.
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Which result is most likely to occur due to orographic uplift?
tornado formation
development of hurricanes
cloud formation and precipitation
clear skies and fair weather
Answers
The most likely result to occur due to orographic uplift is cloud formation and precipitation.
The correct answer would be cloud formation and precipitation.
The most likely result to occur due to orographic uplift is cloud formation and precipitation. Orographic uplift refers to the lifting of air as it encounters a mountain or elevated terrain. As the air is forced to rise, it undergoes adiabatic cooling, which can lead to the condensation of water vapor and the formation of clouds.
When moist air encounters a mountain or any elevated obstacle, it is forced to rise along the windward side. As the air ascends, it cools adiabatically, meaning the temperature decreases as it expands due to decreasing atmospheric pressure. As the air cools, its ability to hold moisture decreases, leading to the condensation of water vapor and the formation of clouds. This process is known as orographic lifting, and it is responsible for the creation of clouds and subsequent precipitation on the windward side of the mountain.
The type of clouds that form due to orographic uplift depends on various factors such as temperature, humidity, and stability of the air. Examples of clouds that can form in this process include stratiform clouds (layered clouds) or cumuliform clouds (puffy, vertically-developed clouds). The presence of moisture in the air, combined with the lifting effect of the terrain, promotes the development of clouds and precipitation.
While orographic uplift can enhance atmospheric instability and contribute to localized weather patterns, it is not directly associated with tornado formation or the development of hurricanes. Tornadoes typically form within severe thunderstorms, while hurricanes are large-scale tropical cyclones that form over warm ocean waters. Clear skies and fair weather are less likely outcomes when encountering orographic uplift, as the lifting of air and subsequent cloud formation often result in increased atmospheric moisture and the potential for precipitation.
In summary, orographic uplift primarily leads to cloud formation and precipitation as moist air is forced to rise over mountains or elevated terrain. This process is responsible for the creation of clouds and can contribute to localized weather patterns and enhanced precipitation in the vicinity of the uplifted region.
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Given the following three mRNA sequences, 2 code for the same protein. Which two?
#1. AGU UUA GCA ACG AGA UCA
#2 UCG CUA GCG ACC AGU UCA
#3 AGC CUC GCC ACU CGU AGU
Answers
Answer:
#2 & #3
Explanation:
both have the same amino acids. like leucine
Knowing that more than one codon codes for the same amino acid during protein building, we can affirm that sequences #2 and #3 code for the same protein.
How does translation occur?
During protein synthesis, the ribosome reads mRNA molecules from the 5' to 3' extremes.
While doing it, tRNA recognizes the codons of the molecules and adds the correct amino acids.
Codons are short sequences of three nucleotides that code for one amino acid.
So the sequence of codons determines the sequence of amino acids in the building protein.
There are 64 possible codons,
The start codon AUG is the most common sequence used by eukaryotic cells and placed near the 5' extreme of the molecule. The end codons are UAA, UAG, UGA. They indicate where to stop protein synthesis. The remaining codons code for one amino acid in the protein. Since there are only 20 amino acids in nature, more than one codon codes for the same amino acid.Knowing this, we can build the protein by reading the mRNA sequences.
#1. AGU UUA GCA ACG AGA UCA
Met Leu Ala Thr Arg Ser
#2 UCG CUA GCG ACC AGU UCA
Ser Leu Ala Thr Ser Ser
#3 AGC CUC GCC ACU CGU AGU
Ser Leu Ala Thr Arg Ser
Sequences 2 and 3 code for the same protein.
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which of the following statements concerning whittaker's representation of his biome scheme is false? which of the following statements concerning whittaker's representation of his biome scheme is false? plants in temperate rain forests are not water limited. tundra represents an extreme biome. subtropical deserts are wetter than woodlands and shrublands. tropical rain forests represent an extreme biome. temperate rain forests have high rainfall and low temperatures.
Answers
The false statement concerning Whittaker's representation of his biome scheme is "Subtropical deserts are wetter than woodlands and shrublands."
Whittaker's biome scheme is based on the combination of temperature and precipitation to classify biomes. Temperate rain forests have high rainfall and low temperatures, while tundra represents an extreme biome with very low temperatures and low precipitation. Tropical rain forests also represent an extreme biome with high temperatures and high precipitation. However, the statement that plants in temperate rain forests are not water-limited is true.
The false statement implies that subtropical deserts are wetter than woodlands and shrublands, which is not accurate. In reality, subtropical deserts are characterized by low precipitation, while woodlands and shrublands have higher precipitation levels. This demonstrates the importance of accurately understanding the characteristics of different biomes and the factors that define them.
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HELPThe Punnett square shows the possible genotypecombinations of two parents who are homozygous fora trait.WWW WWWwWWWWwWhat is the probability of the parents having a childthat is heterozygous for this trait?O 0%O 25%O 75%O 100%
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As we can see in the punnet square we have a recessive homozygous and a dominant homozygous, in the possible combinations that can have the offspring, that is to say the letters inside square we can see that all are heterozygus, e
how does acyl coa get across the inner mitochondrial membrane?
Answers
Answer:
Explanation:
Heres where to get your answer
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What kind of compound
does NOT contain carbon or
living properties?
A. plant leaves
B. inorganic
C. organic
D. microorganisms
Answers
Answer:
I think it's option C. Organic
an organism that invades a region can have negative consequences and not region what kinds of shifts can take place?
Answers
Invasive species provoke significant damages in the structure of native ecosystems. They also cause economical and socio-cultural problems.
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When talking about dispersion we refer to the change in a species´ range or distribution area.
When a species move and establish in a new area out of their original distribution range, they might be considered exotic or invasive, according to their
reproductive rate, population growth, and interaction with native species.The introduction of invasive species has ecological, economic, socio-cultural consequences. Once an invasive species has been established, it overgrows. In the new areas, these species have less environmental pressure and better conditions than in their origin area -fewer predators, more resources, better nitches-, and these factors favor their establishment. They interact with native species by competing for resources such -water, place, radiation, exposure, shelter, food, etcetera-. They provoke significant damages in the structure of native ecosystems, causing severe damage in endemic species. They produce ecological imbalances in the trophic chains and the dynamics of communities. Invasive species are uncontrollable.
As they expand, they can also affect human in an economical manner and has socio-cultural effects. Many invasive species might cause crops loss by eating cultures. They attack farm animals. They affect buildings and other structures or ships by eating wood. They might even attack humans and cause health problems.
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can someone please help me ASAP
Answers
Answer:
Explanation:
4
Stage _____ of NREM sleep represents the beginning of actual sleep.
A. One
B. Two
C. Three
D. Four
Answers
Answer: B. Two
Explanation:
During the first stage, your body starts relaxing and falling into sleep. This is the lightest stage of sleep. You can wake easily during this stage, and are not "fully" asleep.
During the second stage, your body deepens into it's sleep, your heart rate decreases, your body temperature decreases, and more. This is the stage that "represents the beginning of actual sleep" which is the answer to your question.
During the third stage, your body is in a deeper state of sleep. Your muscles relax further, your breathing rate slows, and more.
During the fourth stage, your heart rate and body temperature rise again. Your brain is a bit more active, and your muscles start to "wake up" slowly again.
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Once your body identifies and knows how to fight a virus, it produces __________ that attach to the virus and destroy it.
Answers
Answer:
Antibodies Hope it helps youWhat is environmental science to you?
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Answer:
Environmental science is a multidisciplinary field that explores the dynamics between Earth systems, flora, fauna and humans. It involves research on air, water, soil, food, and wildlife to help understand system processes, identify environmental damage or hazards, and develop solutions to environmental concerns.
Answer:
having to do with the earth and animals
Explanation:
having to do with the earth and animals
can someone send a link on this topic or help me do it in any way?? its due tomorrow
Answers
Answer:
You should explain more...
Explanation:
Why do cows moo? And how do cows moo? I will reward the best answer brainliest
Answers
Cows moo as a means of communication. They use different types of moos to convey various messages such as seeking contact with others, expressing hunger, showing distress, or communicating their presence to their offspring. Cows produce sounds through vocalization by expelling air through their vocal cords and manipulating their larynx and mouth to create the characteristic "moo" sound.
Cows moo as a form of vocal communication. They use their vocalizations to convey various messages to other cows and to communicate with their calves, herd members, and even farmers.
The primary reasons why cows moo include:
Social Interaction: Cows use moos to establish contact and maintain social bonds with other cows. It helps them locate and communicate with each other within the herd.
Maternal Communication: Mother cows use different types of moos to communicate with their calves, guiding them, or calling them to nurse.
Expressing Distress: Cows may moo louder and with higher intensity when they are in pain, stressed, or facing discomfort. This helps alert others that something is wrong.
The mooing sound is produced by vibrations of the vocal cords located in the cow's larynx or voice box. Air from the lungs passes through the vocal cords, causing them to vibrate, producing a distinct sound. Cows have a unique vocal range, and the pitch and tone of their moo can vary based on individual characteristics and the context in which it is used.
Overall, mooing is an essential means of communication for cows, allowing them to express their needs, and emotions, and establish social connections within their herd.
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