In the gene TATTCATTGTTA—TGATTT—ATTCG, CATTGTTA encodes for pepsin, a digestive enzyme. The rest of the sequence doesn’t code for any protein. Which sequence contains a mutation that will affect the formation of pepsin?
A.
TATTCATTCATTA—TGATTT—ATTCG
B.
TATTCATTGTTA—TGACTTT—ATTCG
C.
TATTCATTGTTA—TGATTT—ATTGGCG
D.
TATTCATTGTTA—TGAT—ATTCG
E.
TGCATTCATTGTTA—TGATTT—ATTCG
Answers
Answer:
A. TATTCATTCATTA—TGATTT—ATTCG
Explanation:
TATTCATTGTTA—TGATTT—ATTCG
The bold and underlined part is the only part of the sequence that codes for pepsin. Therefore, only mutations in this area will affect the formation of the protein.
The only sequence where the "CATTGTTA" part of the sequence is affected is option A.
Answer: A. TATTCATTCATTA—TGATTT—ATTCG
Explanation: CATTGTTA - CATTCATTA
Related Questions
List statements from the reading passage that seem to indicate that watson and crick reached conclusions based on speculation rather than experimental evidence.
Answers
Watson and Crick had shown that in DNA, form is function: the double-stranded molecule could both produce exact copies of itself and carry genetic instructions.
The DNA model put out by Watson and Crick is explained by the following points:
1. Right-handed coiling of the polynucleotide chains that make up DNA's double helix creates the structure.
2. The two strands are in opposition to one another. In one stand, the polarity is 5'-3', whereas in the other, it is 3' to 5'.
3. The polynucleotide strands' backbone is made up of the deoxyribose sugar and the phosphate group that is connected to it.
4. The inner core is made up of nitrogenous bases that are joined to deoxyribose sugar by glucosidic linkages.
5. In accordance with their complimentary nature, the nitrogenous bases of the two strands create hydrogen bonds, with adenine forming two H-bonds with thymine and guanine forming three H-bonds with cytosine.
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1. Which human activity would preserve nonrenewable resources? *
A. deforestation
B. recycling
O c. heating home with fossil fuels
Answers
Answer:
B recycyling
Explanation:
The resources which are present in a limited amount and must be used carefully are called nonrenewable resources. For example - petrol, coal, and etc.
The correct answer is B.
There are many activities that help humans preserve non-renewable resources because they are present in a very limited amount.
For example, the amount of coal is limited on the earth. we have to reuse it and recycle it and its end product.
Hence, the correct option is B that is recycling.
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Which word correctly fills in the blanks below?
Single-celled and many multi-celled organisms reproduce asexually by a process called _____________, which is simple cell division. In ___________, DNA is duplicated and then divided equally between two daughter cells. In ___________ in eukaryotes, the DNA is sorted into the two new nuclei formed. A separate process divides the cytoplasm in two. __________ keeps the number of chromosomes constant from one cell generation to the next.
Group of answer choices
mitosis
photosynthesis
budding
cellular respiration
Answers
Answer:
mitosis
Explanation:
Answer: a. budding
b. mitosis
c. budding
d. mitosis
Explanation:
The function of this hormone is to stimulate growth, particularly of long bones and muscle
growth hormone
Antidiuretic hormone
parathyroid hormone
Adrenocorticotropic hormone
Answers
The hormone that stimulates growth, particularly of long bones and muscle, is growth hormone. The correct option is A.
Growth hormone, also known as somatotropin, is a hormone produced and released by the anterior pituitary gland. Its primary function is to stimulate growth and development in the body, particularly in the long bones and muscles.
1. Secretion: Growth hormone is secreted by the anterior pituitary gland in response to signals from the hypothalamus. The hypothalamus releases growth hormone-releasing hormone (GHRH), which stimulates the pituitary gland to release growth hormone into the bloodstream.
2. Target Tissues: Growth hormone acts on various tissues and organs throughout the body. One of its main targets is the epiphyseal plates of long bones, where bone growth occurs. It stimulates the proliferation of chondrocytes (cartilage cells) in the epiphyseal plates, leading to the lengthening of bones.
3. Protein Synthesis: Growth hormone also promotes protein synthesis in muscle cells, leading to muscle growth and increased muscle mass. It enhances the uptake of amino acids into cells and stimulates the production of new proteins, contributing to muscle development.
4. Lipid Metabolism: Growth hormone influences lipid metabolism by promoting the breakdown of stored fats (lipolysis) and increasing the utilization of fatty acids as an energy source. This can result in a reduction of adipose tissue and improved muscle-to-fat ratio.
Overall, growth hormone plays a crucial role in stimulating growth and development during childhood and adolescence. It regulates bone growth, muscle development, and metabolism, promoting overall growth and body composition. Therefore, option A growth hormone is the correct answer.
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During breeding season, the sight of a red belly on a male stickleback fish will trigger an antagonistic response in other males. This is an example of
Answers
Answer:
fixed action pattern
Explanation:
This is an example of a fixed action pattern. This is an ethological term that describes an instinctive behavior sequence that is highly stereotyped and species-characteristic due to it happening in the same manner countless times in a predictable cycle. These fixed action patterns are innate mechanisms triggered by a specific stimulus or releaser, which in this scenario is the sight of a red belly.
A - Glycolysis B - Intermediate Step C - Kreb's Cycle D - Electron Transport Chain E - Anaerobic Respiration 1. Produces approximately 34 ATP. 2. Glucose is broken down into 2 pyruvic acid. 3. Without oxygen in the system, occurs. 4. Releases carbon dioxide and generates FADH2. 5. Pyruvate is turned into acetyl CoA. 6. No energy is produced here, only energy carriers. 7. Location where ATP synthases are found. 8. Requires the use of 2 ATP as activation energy. 9. Lactic acid is sometimes generated in an animal cell. 10. Two cycles are possible for each glucose.
Answers
Answer:
1. D
2. A
3. A
4. C
5. B
6. B
7. D
8. A
9. E
10. C
Explanation:
The process of cellular respiration, which generally involves the synthesis of energy from carbohydrate molecule (glucose), occurs in four major steps in eukaryotic cells. These steps are glycolysis, kreb cycle, bridge or intermediate step and oxidative phosphorylation (electron transport chain).
The features of each step is highlighted below:
GLYCOLYSIS: This is the first stage if cellular respiration in which Glucose is broken down into 2 pyruvic acid (pyruvate). It can occur without oxygen in the system and it uses 2 ATP molecules to start the process.
INTERMEDIATE STAGE: This stage is also called bridge or transition reaction. It does not produce any ATP molecule but only prepares the reaction for aerobic respiration in the mitochondria by turning Pyruvate molecule into acetyl CoA.
KREB'S CYCLE: This is the third step in the process. AcetylcoA undergoes series of chemical processes to release 4 carbon dioxide molecules and generates FADH2 and NADH electron carriers. It takes two cycles to process two glucose molecules that is used in the respiration process.
ELECTRON TRANSPORT CHAIN: In this stage, approximately 34 ATP molecules are produced in the mitochondria using enzyme called ATP synthase, which catalyse the conversion of ADP to ATP.
ANAEROBIC RESPIRATION: This type of respiration occurs in the absence of oxygen. In animal cells, lactic acid/lactate is produced and stored in the muscle as an end product
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There are prerequisites for natural selection to take place. Can you identify them Check all that are correct?
What are the prerequisites for natural selection to take place?
1) In a given population genetic variation must exist.
2) Variations within a population are always the result of DNA mutations.
3) In a given population, more offspring are produced than can survive.
4) Reproduction within a population is differential.
5) In any population natural selection can only occur if there is s3xual reproduction.
6) Inherited traits that provide an advantage will lead to death and possible extinction.
Answers
Answer:
1 and 3
Explanation:
Answer:
1,3 &4
Explanation:
I took the test
Of the following adaptations, which apply to life in rocky intertidal environments? Choose all that apply.
View Available Hint(s)
Some organisms can grow directly on top of other organisms.
Some organisms can survive for long periods of time out of water.
Having a soft, flexible body helps prevent organisms from drying out.
A thick exterior or exoskeleton helps protect creatures from being crushed.
Burrowing is one of the most common adaptations in rocky intertidal zones.
Answers
Rocky intertidal environments can be defined as the area that is found on the coast where tides rise and fall every day.
During low tide, rocky intertidal environments are exposed and become hot, dry, and saline. During high tide, it is submerged in seawater. In rocky intertidal environments, the following adaptations apply to life: Some organisms can survive for long periods of time out of water. Having a soft, flexible body helps prevent organisms from drying out. A thick exterior or exoskeleton helps protect creatures from being crushed. Burrowing is one of the most common adaptations in rocky intertidal zones. Organisms living in rocky intertidal environments have to be adapted to harsh living conditions due to the alternating conditions of water and air. The above options explain some of the adaptations required by these organisms in order to survive in rocky intertidal environments.
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As greenhouse gas concentrations increase across the globe in our atmosphere, we are observing significant changes to our climate. How does climate change directly affect desert regions and humans’ ability to sustain in these regions?.
Answers
Climate change directly affects desert regions by increasing temperatures, altering precipitation patterns, disrupting ecosystems, and contributing to desertification.
Here are some ways climate change affects desert regions and human sustainability:
Increased temperatures: Climate change contributes to rising temperatures globally, and desert regions are particularly susceptible to temperature extremes. Higher temperatures in deserts lead to increased evaporation, water scarcity, and challenges for agriculture, making it harder for humans to sustain themselves in these arid environments.Changes in precipitation patterns: Climate change alters rainfall patterns, which can result in prolonged droughts or intense rainfall events in desert regions. Both scenarios pose difficulties for human livelihoods. Droughts reduce water availability, affecting agriculture and access to drinking water. Intense rainfall events, when they occur, can lead to flash floods, damaging infrastructure and ecosystems.
Ecosystem disruption: Climate change affects desert ecosystems, leading to changes in vegetation, biodiversity, and habitats. These changes can have cascading effects on food chains and the availability of resources relied upon by humans in these regions.
Increased desertification: Climate change can contribute to desertification, the process by which previously productive land transforms into desert-like conditions. This process reduces soil fertility, making it more challenging to sustain agriculture and support human populations.
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PLEASE HELP I WILL GIVE YOU MULTIPLE BRAINLYS ON DIFFRENT POSTS!!!!!
Answers
6. The cells produced via meiosis are called:
O a) sex cells
I b) somatic cells
O c) body cells
0 d) skin cells
Answers
The cells produced via meiosis are called gamete cells, such as sperm cells or egg cells. Hence option a is correct.
What is meiosis ?In sexually reproducing organisms, meiosis is a kind of cell division that results in a reduction in the number of chromosomes in gametes (the sex cells, or egg and sperm). Body or somatic cells in humans are diploid, meaning they have two sets of chromosomes one from each parent.
The egg and sperm that combine during fertilizations must be haploid, or having just one pair of chromosomes, in order to sustain this condition. Each diploid cell divides twice during meiosis to produce four haploid daughter cells, which are the gametes.
Meiosis is characterized by DNA replication, two rounds of cell division, and the production of four daughter cells, each of which has half as many chromosomes as the parent cell. Meiosis I and Meiosis II are the names of the two meiotic divisions.
Each chromosome's DNA is copied during the S phase of the cell cycle, resulting in two identical sister chromatids that are kept together by sister chromatid cohesion before meiosis starts.
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5) A stimulus causes a change or response in
an organism.
a. True
b. False
Answers
The answer
A stimulus causes a change or response in an organism
True
Identify two solutions that have more OH- ions than H+ ions.
Answers
Answer:
Lemon juice and human blood are both acidic and, therefore, contain more H+ ions than OH- ions.
Which characteristics are used to differentiate among the six kingdoms?
a. body type, coelom, cell type, movement, size
b. body type, cell type, cell structure, nutrition
c .cell structure, movement, cell type, nutrition
d . nutrition, coelom, cell structure, cell type, size
Answers
Answer:
c
Explanation:
cells help you live
Answer:
C
Explanation:
Answer above
Adenine, thymine, guanine, and cytosine are the _______ that make up the nucleotides of DNA
Answers
Answer:
here you go
Explanation:
There are four nitrogenous bases found in DNA that are called guanine, adenine, thymine and cytosine. They are abbreviated by the first letter in their name, or G, A, T and C. The bases can be divided into two categories: Thymine and cytosine are called pyrimidines, and adenine and guanine are called purines.
DNA have thymine while RNA have uracil nitrogenous base.
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Which contains the largest group of organisms, the population, community or the ecosystem?
Answers
What can move, grow react, protect them selves, repair damage, as well as regulate life processes, and reproduce?
Answers
The organisms that can move, grow, react, protect themselves, repair damage, regulate life processes, and reproduce are living organisms. These are the characteristics that differentiate living organisms from non-living things.
Living organisms include animals, plants, fungi, and microorganisms. All living organisms have the ability to move, whether it is through locomotion or movement of substances within their bodies. They can also grow and develop, reacting to their environment in order to protect themselves and repair any damage. Living organisms also have the ability to regulate their life processes, such as metabolism and homeostasis, in order to maintain proper functioning. Lastly, living organisms have the ability to reproduce, creating offspring in order to ensure the continuation of their species.
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An investigator has a strand of chromosomal DNA whose sequence is shown. She wants to use polymerase chain reaction (PCR) to amplify and isolate the DNA fragment defined by the highlighted segment. Her first step is to design two PCR primers, each 20 nucleotides long, that can be used to amplify this DNA segment. The final PCR product generated from the primers should include no sequences outside of the highlighted segment. 5' --- AATGCCTCAGCCGATCTGCCTCGAGTCAATCGA TGCTGGTAACTTGGGGTATAAAGCTTACCCATGGTATCGTAG TTAGATTGATTGTTAGGTTCTTAGGTTTAGGTTCTGGTATT GGTTTAGGGTCTTTGATGCTATTAATTCTTTGGTTTTGATTT GGTCTTTATATGGTTTATGTTTTAAGCCGGGTTTTGTCTGG- GATGGTTCGTCTGATGTGCGCGTAGCGTGCGGCG ---3' What are the sequences of the investigator's forward and reverse primer? Enter them 5' to 3'. forward primer: reverse primer:
Answers
The forward primer would be: 5'-ATGCTGGTAACTTGGGGTAT-3' . The reverse primer would be: 5'-CCAGACAAAACCGGCTTAAA-3'
The method that uses a chain of reactions is called a polymerase chain reaction. In vitro procedures that polymerise or create more precise copies of the DNA from a tiny sample are carried out.
The DNA replication process, which includes DNA primers and a specific DNA polymerase enzyme called Taq polymerase, provides the basis for the PCR technique reverse primer.
Denaturation, annealing, and extension are the three steps of the PCR process. During denaturation, the DNA is broken down to release its hydrogen bonds, primers are added at both ends (called reverse and forward primers), DNA is synthesised, and the sample is cooled before extension.
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which of the following is not a form of energy
A.mechanical
B.heat
C.matter
D.solar
Answers
Answer:
C
Explanation:
mechanical energy is the sum of potentiol and kinetical
heat is like stoves
solar is... the sun.
What are the fifteen different structures found within eukaryotic cells?
Answers
Answer:
cell membrane, nucleus, nucleolus, nuclear membrane, cytoplasm, endoplasmic reticulum, Golgi apparatus, ribosomes, mitochondria, centrioles, cytoskeleton, vacuoles, and vesicles.
Explanation:
sorry but these are only 13
structures in organisms that used oxygen well were
Answers
Organisms possess specialized structures for efficient oxygen utilization. Gills in aquatic organisms, lungs in terrestrial vertebrates, and tracheal systems in insects enable oxygen exchange. Birds have lungs and air sacs for efficient respiration. Hemoglobin in red blood cells transports oxygen. These adaptations optimize oxygen utilization for survival.
Structures in organisms that are well-adapted for efficient oxygen utilization include:
Gills: Gills are respiratory organs found in aquatic organisms such as fish. They have a large surface area and are composed of thin filaments or plates with numerous blood vessels. Gills allow for efficient extraction of oxygen from water by facilitating the exchange of gases.Lungs: Lungs are respiratory organs found in terrestrial vertebrates, including mammals, birds, and reptiles. Lungs consist of a complex network of bronchial tubes and millions of tiny air sacs called alveoli. The large surface area and the thin walls of the alveoli facilitate the exchange of oxygen and carbon dioxide between the air and the bloodstream.Tracheal System: Insects have a network of tubes called tracheae that deliver oxygen directly to cells. The tracheal system enables efficient oxygen transport throughout the body, allowing insects to have a high metabolic rate and perform activities such as flying.Spiracles: Spiracles are small openings found on the surface of some insects. They allow for the exchange of gases between the external environment and the tracheal system. By opening and closing the spiracles, insects can control the flow of air and regulate oxygen uptake.Lungs and Air Sacs (in birds): Birds have a unique respiratory system that includes both lungs and air sacs. Air sacs act as bellows, ensuring a unidirectional flow of air through the lungs, allowing for efficient oxygen uptake and carbon dioxide removal. This adaptation is particularly important for the high metabolic demands of flying.Hemoglobin: Hemoglobin is a protein found in red blood cells that binds to oxygen molecules. Its structure enables efficient oxygen transport in the bloodstream, ensuring oxygen is effectively delivered to tissues throughout the body.These structures and adaptations are examples of how organisms have evolved to maximize their oxygen utilization, allowing them to thrive in their respective environments.
High concentrations of a chemical messenger can result in down-regulation due to receptors being taken into the cell by receptor-mediated endocytosis, a process called.
Answers
High concentrations of a chemical messenger can result in down-regulation due to receptors being taken into the cell by receptor-mediated endocytosis.
When a chemical messenger, such as a hormone or neurotransmitter, is present in high concentrations, it can lead to down-regulation of its receptors. Down-regulation refers to a decrease in the number of receptors on the cell surface. One mechanism by which this down-regulation occurs is through receptor-mediated endocytosis.
Receptor-mediated endocytosis is a process in which the receptors on the cell membrane bind to the chemical messenger and are internalized into the cell through the formation of vesicles. Once inside the cell, the receptors may be targeted for degradation or recycling. This internalization of receptors reduces their availability on the cell surface, effectively decreasing the cell's sensitivity to the chemical messenger.
The down-regulation of receptors through receptor-mediated endocytosis is a regulatory mechanism that helps maintain homeostasis in response to high concentrations of a chemical messenger. It allows cells to adapt to prolonged exposure to the messenger and prevent overstimulation. This process ensures proper cellular signaling and prevents excessive cellular responses.
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coral polyps build a _____________ case around themselves.
Answers
Coral polyps build a calyx case around themselves. Calyx is the defensive cup on which the coral polyp sits. It is made of calcium carbonate.
The skeletons of stony corals are secreted by the downward part of the polyp. This method yields a cup or calyx, in which the poly sits. The walls enclosing the cup are named the theca, and the floor is called the basal plate. Calcium carbonate is secreted by reef-building polyps and builds a protective cup named a calyx within which the polyps sit. When polyps are physically emphasized, they contract into their calyx so that practically no portion is uncovered above their skeleton.
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Earth is approximately 4. 5 billion years old. Is it likely that any of the rocks that were on earth's surface when it first formed are still in existence?.
Answers
A is the anwer, No rock material is constantly recycled on Earth's surface through the rock cycle.
which made it possible for researchers to calculate that Earth was at least 4.3 billion years old?Earth's age is generally acknowledged by astronomers and geologists to be 4.6 billion years. With the help of dating techniques like rubidium-strontium and uranium-lead, this age has been determined through the isotopic analysis of several meteorites as well as soil and rock samples from the Moon.
Which stage of the rock cycle is active at the Earth's surface?Rocks at the surface of the Earth are reduced in size by weathering. Sediments are the microscopic pieces. These sediments are moved around by erosion in different locations by running water, ice, and gravity. Sedimentation is the process by which sediments are deposited or laid down.
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How does active transport help a cell maintain homeostasis?
O A. Cells are moved to areas where the concentrations of substances are the most stable.
OB. Molecules flow rapidly from an area of higher concentration to one of lower concentration to meet the needs of the cell.
O C. Large molecules flow through channel proteins to keep their concentrations stable.
O D. Carrier proteins use energy to move molecules from an area of lower concentration to one of higher concentration.
Answers
Molecules are transported by carrier proteins using energy from a region of lower concentration to one of higher concentration.
Active transport benefits the cell in what ways?When molecules move actively, they do so in opposition to a gradient or other sort of resistance, like migrating from a region of lower to higher charge. Cells use active transport to store essential substances like amino acids and glucose.
What supports cellular homeostasis?A number of control systems that operate at the organ, tissue, or cellular level work together to maintain homeostasis. Substrate supply, individual enzyme and receptor activation or inhibition, enzyme synthesis and breakdown, and compartmentalization are some of these regulatory mechanisms.
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How does the cell membrane use the atp produced by the cell’s mitochondria
Answers
Explanation:
mitochondria, using oxygen available within the cell convert chemical energy from food in the cell to energy in a form usable to the host cell. Nadh is then used by enzymes embedded in the mitochondria inner membrane to generate a triphosphate ATP in ATP the energy is stored in the form of chemical bonds.
Answer:
Mitochondria, using oxygen available within the cell convert chemical energy from food in the cell to energy in a form usable to the host cell. ... NADH is then used by enzymes embedded in the mitochondrial inner membrane to generate adenosine triphosphate (ATP). In ATP the energy is stored in the form of chemical bonds.
Explanation:
Metals are useful in industry because they can be shaped without breaking. What is this property of metals called?
Answers
Answer:
malleable ................
Answer:
versatility ductility conductivity malleability
Identify the form carbón takes in the biosphere, hydrosphere geosphere and atmosphere
Answers
Hydrosphere: stored in organic compounds trapped in living organisms and in the soil
Geosphere: stored in rocks, fossil fuels, and magma
Atmosphere: stored in rocks and sediments. Also the deep ocean
10. Movement of blood through the
tissues of the heart
Answers
Answer: Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium. As the atrium contracts, blood flows from your right atrium into your right ventricle through the open tricuspid valve.
Explanation:
Jake is taking photos of his neighbor's home to help them list and sell the house. It is
important to have a wide variety of photos to choose from, so he is taking multiple
shots of each room--some from the doorways, some from floor-level, some from up
above, and some from a corner of the room. What is Jake playing around with as he
photographs each room?
O motivation
O decor
O lighting
O angles