Answers
The correct matching contents are a nucleus with chromosomes at the head, flagella at the tail, a large number of mitochondria in the middle, and controls from the original spermatid at the neck.
Each cell's nucleus contains chromosomes, which are structures that resemble threads and contain the DNA molecule. Each chromosome is constructed from DNA that has been tightly wound around proteins known as histones several times to sustain its shape.
The flagellum's major role is as a motility organelle, supporting both movement and chemotaxis. Bacteria can have one or more flagella and may be either polar or peritrichous.
Cellular energy is produced by mitochondria using dietary energy. The number of mitochondria grows with exercise, enhancing your body's capacity to create energy.
The two sperm centrioles are active in the majority of early mammalian embryos. The majority of cells that divide require two centrosomes, each of which binds specifically to a spindle pole and mediates chromatid separation amongst daughter cells.
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The question is -
Match each region of the sperm cell to the correct contents that are found within that region.
Related Questions
What are signs you are going through a growth spurt? (male)
Answers
Answer:
signs that a male is going through a growth spurt are, he sleeps more than usual, and he is gaining weight.
Explanation:
PLEASE HELP! Which of the following statements correctly describes the relationship between erosion and deposition?
A.
Erosion breaks rocks into pieces, and deposition moves the pieces.
B.
Deposition and erosion both involve the movement of small pieces of rock from one place to another.
C.
Erosion is the movement of small pieces of rock from one place to another, and deposition is when the rock settles in a new location.
D.
Deposition and erosion break rocks into smaller pieces, but the rocks remain in place.
2 / 14
Answers
Answer:
B
Explanation:
thsey both move or break rocks
YA'LL ARE SMART ! PLEASE HELP !
Answers
Calcium and sulfur will form calcium sulfide which is highly ionic.
To lower your dietary cholesterol, you should reduce your intake of
a. vegetable oils.
b. animal products.
c. protein.
d. cereal.
Answers
What are the stages of bee development (eggs,larvae,pupae)
Answers
The stages of bee development are egg, larva, pupa, and adult. Eggs hatch into larvae, which then transform into pupae. Finally, adult bees emerge and undergo further maturation.
The stages of bee development are:
1. Egg: The bee life cycle begins when the queen bee lays an egg in a honeycomb cell.
2. Larva: The egg hatches into a larva, which is a legless, grub-like creature. The larva is fed a special diet called royal jelly, which stimulates its growth.
3. Pupa: The larva undergoes metamorphosis and transforms into a pupa. Inside the sealed cell, the pupa undergoes various changes, developing into an adult bee.
4. Adult Bee: After completing the pupal stage, the fully developed adult bee emerges from the cell. The bee then undergoes further maturation, such as its exoskeleton hardening, wings expanding, and adult coloration appearing.
It's important to note that there are three castes of bees: queen, worker, and drone. The development process for each caste is similar, but the diet and size of the cells they are raised in differ, leading to their distinct roles within the colony.
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In cells, genetic information is transferred from DNA to mRNA. Which of the following best describes how mRNA is used to produce proteins?
• Ribosomes move along the mRNA strand and connect amino acids according to the sequence of the mRNA.
© The mRNA is replicated, and then both strands are folded into a three-dimensional structure known as a protein.
© Enzymes break up the mRNA strand so that amino acids found floating freely in the cytoplasm can bind to the mRNA
bases.
© Amino acids on ribosomes attach to the mRNA strand and then digest the strand, leaving the amino acids free
assemble into proteins.
Answers
Ribosomes move along the mRNA strand and connect amino acids according to the sequence of the mRNA. The correct option is A.
Thus, in order to create proteins, ribosomes move along the mRNA strand and join amino acids in the proper order. The mRNA molecule joins to a ribosome during translation, and the ribosome reads the nucleotide sequence on the mRNA one codon at a time.
A molecule known as transfer RNA (tRNA) transports each codon's designated amino acid to the ribosome. The ribosome then joins the amino acids in the polypeptide chain according to the mRNA sequence, which will eventually fold into a protein. The newly created protein is then released after the ribosome reaches a stop codon, which happens to be the end of this process.
Thus, the ideal selection is option A.
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how are viruses different from bacteria
Answers
Answer:
viruses are a non-living collection of molecules that need a host to survive.
bacteria are free-living cells that can live inside or outside a body
Explanation:
Ticks behave more like commensals than like parasites.
explain
Answers
Answer:
Ticks are little critters that eat at human blood, but humans do not actually get harmed by it. Yes, one could get transmitted diseases from the tick, but the tick itself is not harming the human.
A parasite, on the other hand, gets their food and benefits AT THE EXPENSE of their host. This means that the parasite causes harm directly to the host.
The tick does not cause direct harm, so it is more like a commensal, not like a parasite.
List all six stages of the sensory pathway when an animal responds to information about its environment.
Answers
Explanation:
There basically four stages of sensory pathway when an animal responds to information about its environment.
and these stages of pathway are Reception, transduction, transmission, and perception.
The sensory receptors are commonly described as specialised neurons found in sense organs that helps detect and respond to stimuli. The six stages of the sensory pathway which an animal responds to information about its environment are:
Reception: This falla under sensation. It is simply a type of sensory receptors detect that stimulus is present.Transduction: This also falls under sensation. It is a type of sensory receptors whose work is mainly to convert stimulus energy into electrochemical energy.Transmission: This falls under sensation. It is when neural impulses leave sensory organs and moves to the brain.selection: This falls under perception. It acts as detectors that filter the stimuli by responding to particular features of a stimulus while also ignoring the rest.Organisation: This falls under perception: It is known to organise the characteristics of sensory stimuli in a meaningful manner. Interpretation: This Fall also under perception. It is known to give meaning to sensory stimuli.Sensation is simply regarded as a physiological process that uses sensory receptors in detecting and responding to stimuli.
Perception is referred to as the mental work of organising and interpreting sensory stimuli, making it meaningful.
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Which structure contains the instructions used to build one specific protein
Answers
mRNA is the molecule that carries genetic information transcripted from DNA in the nucleus to the cytoplasm, where it meets rRNA and tRNA and protein synthesis occurs through translation. mRNA is the structure that contains the instructions used to build one specific protein.
What is mRNA?
mRNA is one of the ribonucleic acids -together with rRNA and tRNA- and it means messenger RiboNucleic Acid.
This molecule is a carrier of genetic information and is in charge of transporting it from the genome to the ribosomes. It is the mold for the new protein synthesis.
This molecule is synthesized in the nucleus during the transcription process. Their nucleotide sequence is complementary with the nucleotide sequence of a particular DNA segment.
Once its synthesis is completed, mRNA moves to the cytoplasm where it meets rRNA and tRNA that read the genomic information and add amino acids to build the new protein. This process is known as translation.
mRNA is the structure that contains the instructions used to build one specific protein.
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I need help with 5,6 I’ll reward brainalist + 5 points for correct answer
Answers
Answer:
Mitochondria
Multicellular
Cells are made up of a colorless, jellylike substance called __ in which food elements such as
proteins, fats, carbohydrates, minerals, and water are present.
a. Plasma
b. Protoplasm
c. Cytoplasm
d. Membrane
Answers
Cells are made up of a colorless, jelly-like substance called protoplasm in which food elements such as proteins, fats, carbohydrates, minerals, and water are present. Option B is correct.
Protoplasm refers to the colorless, jelly-like substance that is present inside the cell membrane of the cell, and it is the living substance of the cell. All the activities of the cell are carried out in the protoplasm. It comprises the cell's nucleus, cytoplasm, and cell membrane. Protoplasm is a term used to describe the living substance found within cells.
It is the collective term for the cytoplasm and nucleus of a cell. Protoplasm includes various components such as water, proteins, lipids, carbohydrates, nucleic acids, and other organic and inorganic molecules. It plays a vital role in maintaining the structure, metabolism, and functioning of cells. Option B is correct.
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Answer: b. Protoplasm.
Explanation: Cells are composed of various components, including the protoplasm. Protoplasm refers to the colorless, jelly-like substance that fills the cells. It contains all the essential components necessary for the cell's functioning, such as proteins, fats, carbohydrates, minerals, and water.
Protoplasm consists of the cytoplasm and the nucleus, which are enclosed by the cell membrane.
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Quagga mussels, an invasive species of mollusk originally from
Russia, have been introduced to the lake after being carried in on
the hulls of boats. An assessment of the size of the quagga
mussel problem is needed, along with suggestions to curb their
population growth.
what field of science is this?
Answers
This is a problem in the field of ecology.
The problem of quagga mussels in the lake is an ecological issue that requires scientific assessment and management.
It falls under the discipline of ecology, which studies the relationships between organisms and their environment.
Ecologists investigate the impacts of invasive species on the ecosystem and devise strategies to control their spread and minimize their effects.
In this case, scientists will need to examine the size of the quagga mussel population, their distribution, and their ecological interactions with native species.
They will also need to recommend measures to prevent further introduction of quagga mussels and to manage their population growth, such as using chemical treatments or biological controls.
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.
.
.
.
Human Population Growth
Objectives: Create a graph of human population growth and use it to predict future growth and identify factors
that affect population growth,
Year
1650
1750
1850
1925
1956
1966
1970
1976
1980
1991
2000
2004
2012
Number of People (in billions)
.60
.70
1.0
2.0
2.5
3.3
3.6
4.0
4.4
5.5
6.0
6.5
7,5
Instructions for creating your graph:
Place time on the horizontal axis. Values should range from 1650 to 2050.
Place number of people on the vertical access. Values should range from 0 to 15 billion.
Make sure that your graph is a full page in size and you have the correct labels for the X and Y axis
Create a title for your graph.
中的质量
ARARIORAT
PARIRATURE
MA
¶¶¶ M
Analysis (use your graph to answer the following):
1. It took 1649 years for the world population to double, going from .25 billion people to .50 billion people.
How long did it take for the population to double once again?
A third time?
2. How long did it take for the population to double a second time?,
3. Use a different color to extend your graph to the year 2015,
In what year will the population reach 10 billion?
1. Based on your graph, how many years will it take for the population of 2000 to double?
The graph illustrates exponential growth. Based on the properties of this graph, what does this term mean?
Answers
Exponential growth refers to a rapid and continuously increasing rate of population growth over time, resulting in a steep upward curve on the graph.
It took 1649 years for the world population to double, going from 0.25 billion people to 0.50 billion people. To double once again, it would take the same amount of time, approximately 1649 years. A third doubling would also take approximately 1649 years.
The population doubled for the second time in the year 1950. It took around 100 years for the population to double for the second time.
Extending the graph to the year 2015, you would add data points for that year. The specific values would depend on the available population data for that year.
According to the graph, the population is projected to reach 10 billion around the year 2050.
Based on the graph, it appears that the population of 2000 will double in approximately 40 years. However, since the specific year for the population value of 2000 is not provided, the exact number of years cannot be determined.
The graph illustrates exponential growth. This term means that the population is increasing at an accelerating rate over time. As the population grows, the rate of increase becomes more significant, resulting in a steep upward curve on the graph. This indicates a rapid and continuous growth pattern rather than a linear or constant rate of growth.
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Proteins that speed up biochemical reactions are known as
Answers
Answer:
agrochemicals in crops in a farma no.
how is ischemia to the heart different from a heart attack?
Answers
Cerebral ischemia or brain ischemia, is a condition that occurs when there isn't enough blood flow to the brain to meet metabolic demand. This leads to limited oxygen supply or cerebral hypoxia and leads to the death of brain tissue, cerebral infarction, or ischemic stroke.
AUUUAACUGUUCUGUCUAGAG
1. Construct an Explanation Based only on the information provided, why could the
mRNA section be translated into three different sets of amino acids, instead of just one
set?
2. Use Models Use the genetic code to translate the sequence into each of the three
possible sets of amino acids.
3. Draw Conclusions Which of the three sets of amino acids is the most likely to be
included in the polypeptide? Explain your reasoning.
Answers
Answer: three sets: ile. leu,phe,cys,leu,glu. glu,ile,cys,leu,val,asp,leu
The most likely sequence to be included is the R to L read, because of the STOP codon if read L to R. The lone ile would be the last amino acid of a different polypeptide, and there is no promoter sequence after the STOP codon.
Explanation:
auu,uaa,cug,uuc,ugu,cua,gag
Ile,STOP,leu,phe,cys,leu,glu
glu,ile,cys,leu,val,asp,leu (reverse)
After a STOP codon, a DNA promoter is required
Codons are the trinucleotide sequence found in the DNA and RNA. These codons code for specific amino acids and describe the relationship between the nitrogenous bases of the DNA.
1. Codon is the set of three nucleotides, in which amino acids can be coded by different codons.
In the given sequence, the mRNA can translate the sequence into more than one set as the sequence must contain a promoter and a stop codon.
2. In the given set, the possible amino acid sequences can be given as:
Glutamic acid, isoleucine, cysteine, leucine, valine, aspartate, leucine
Isoleucine, Ochre, Leucine, Phenylalanine, Cysteine, Leucine, Glutamic acid
3. The codon sequence, which has a promotor sequence after a stop or start codon will have more chances to be translated during the process.
In the given sequence:
Isoleucine, Ochre, Leucine, Phenylalanine, Cysteine, Leucine, Glutamic acid
The polypeptide will be stopped due to the presence of a stop codon in the polypeptide.
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5 similarities between The Moon & Mercury and justify your answers
Answers
Answer:
It has no atmosphere.
Its surface is covered with circular craters.
It has huge, round basins.
It has lunar highlands.
Explanation:
Mercury is similar to the moon because both have no atmosphere, surface is covered with circular craters and having large, round basins. Both have lunar highlands. Craters are the circular, excavated holes made by impact events that has a rough surface while on the other hands, most of the crust of the Moon is made of silicate rocks is known as anorthosites, these regions are called the lunar highlands.
What functions share the animal tissues and the plant tissue
Answers
Answer:
hope it's help you...............
Which of the following statements regarding genetic mutations is true?
O Mutations are always helpful, leading to the survival and genetic diversity (variation) of a given population
O Mutations are always harmful and can lead to the extinction of a species or population
Mutations can be either harmful or beneficial, providing either an advantage or disadvantage to the individuals survival
Mutations always lead to an decrease in the genetic diversity (variation) of a given population
Answers
Answer:
The last two points are true
Explanation:
Mutations are harmful and beneficial but can also be neutral
Mutations do cause a variation of given poulation
The cell membrane is mainly made up of lipids and proteins. It acts as a barrier to the surrounding environment. Which of the following statements about lipids BEST supports the argument that lipids help protect the contents of the cell?
Responses
Lipids that are placed in water do not dissolve.
Lipids that are placed in water do not dissolve.
The tail of a lipid is made of carbon and hydrogen.
The tail of a lipid is made of carbon and hydrogen.
Individual lipids in a membrane can rotate freely.
Individual lipids in a membrane can rotate freely.
Lipids are composed of a head and a thin tail
Answers
Lipids helps in protecting the contents of cell because it is hydrophobic , when placed in water they do not get dissolve.
There is a characteristic that unites the various chemicals that make up lipids. Insoluble in water, lipids are hydrophobic ("fear of water"). In a cell, lipids have a wide range of activities. Fat-like lipids, often known as lipid stores, are how cells keep energy for long-term use. For both plants and animals, lipids act as a barrier between them and their surroundings. As an illustration, their water-repellent properties aid in keeping aquatic birds and mammals dry. A significant component of the plasma membrane, lipids serve as the building blocks for numerous hormones. The several types of lipids are fats, oils, waxes, phospholipids, and steroids.
Thus, lipids cell membrane are the structural barrier of cell and helps in protecting its contents .
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Which of the following statements about enzymes is false?
А Enzymes are made up of amino acids.
B Enzymes make otherwise slow reactions proceed more quickly.
C Enzymes provide energy for endergonic reactions.
D. Enzymes are usually specific for the chemical reactions they catalyze.
Answers
Answers B
The false statement about enzyme is - option C. Enzymes provide energy for endergonic reactions.
Enzymes are protein acts as biological catalysts. Enzymes increase the rate of reactions by lowering the activation energy.
Enzymes are made from amino acids. The chain of amino acids then folds into a unique shape.These are specific for the chemical reactionsEnzymes are biological catalysts that increase the rate of chemical reactions inside cells by lowering the activation energy therefore can not provide energy.Enzymes make slow reactions proceed more quickly.Thus, the false statement is - option C.
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7. For the following scenario provide a hypothesis, the dependent variable, independent variable, standardized variables, and control group.
Scenario: You want to determine whether plants communicate with their neighbors in response to stress, so you design an experiment. You have two groups of plants, one that will be exposed to a stressor and another that will not. You apply the stress 3 times a day for 10 days. At day 1 you measure the amount of stress hormone in the plants and then again you measure the amount of stress hormone on day 10.
Answers
Here, the hypothesis is "plants communicate with their neighbors in response to stress", dependent variable is the amount of the stress hormone in the plants, and the independent variable is the exposure to stress (applied 3 times a day for 10 days), standardized variables are plants used, duration of the stressor, amount of stress hormone. The control group is the plant that is not exposed to stressor.
What is the significance of the control group?Here, the control group is the group of plants that are not exposed to stress, and the control groups plants are experimented or tested with the other plants to get the result of the stress hormone on the plants.
Hence, here, the hypothesis is "plants communicate with their neighbors in response to stress", dependent variable is the amount of the stress hormone in the plants, and the independent variable is the exposure to stress (applied 3 times a day for 10 days), standardized variables are plants used, duration of the stressor, amount of stress hormone. The control group is the plant that is not exposed to stressor.
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What best defines an extensive property of a substance?
Answers
Answer:
measurable and observable
Explanation:
describe how the human body maintains the carbon dioxide consetration in the blood when it rises above normal limits
Answers
Answer:
carbonic anhydrase helps to maintain the acid-base balance in the bloodstream and is present in high concentration in erythrocytes
Explanation:
as levels of CO2 in the blood begins to rise,the body can respond through hypoventilation or hyperventilation respectivelyAs degrees of CO2 in the blood begin to upward push, the body can reply through hyperventilation or hypoventilation, respectively. The CO2 is sure to hemoglobin paperwork a carbamino compound. In circumstances in which the CO2 and H+ concentrations are excessive, the affinity of hemoglobin for O2 is reduced.
How does the frame adjust the quantity of carbon dioxide within the blood?The blood consists of carbon dioxide to the lungs, where it's miles exhaled. As carbon dioxide accumulates in the blood, the pH of the blood decreases (acidity will increase). The mind regulates the quantity of carbon dioxide that is exhaled by controlling the rate and depth of respiration (airflow).
How does the frame alter blood oxygen ranges?The carotid frame represents an international oxygen-sensing mechanism in mammals. whilst the glomus cells within the carotid frame locate hypoxia, they may be depolarized and ship signals to the respiratory centers within the medulla oblongata to boom respiration price.
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please HELP i’ll give brainlist and 100 points
1.name the reactants in the equation
2. name the products in the equation
3. state whether this reaction is endothermic and explain how you are able to recognize this
4. state whether this reaction is anabolic or catabolic and explain how you are able to recognize this
Answers
According to the image,
1. The reactants of photosynthesis is carbon dioxide, water, and solar energy.
2. The products of photosynthesis is glucose and oxygen
3. The photosynthesis reaction is endothermic. For a reaction to be endothermic, energy (in this case, solar energy) must be put into the system in order for the reaction to occur. Whereas, exothermic reactions are spontaneous and don't require an initial input of energy.
4. Photosynthesis is an anabolic pathway. Carbon dioxide and water are utilized to synthesize glucose. Whereas, the process of glycolysis is catabolic because you break down glucose into 2 molecules of pyruvate.
Astronomers have used several methods to derive estimates for the age of the universe. Identify the ways in which astronomers have done so from among those listed below. Astronomers determine estimates for the age of the universe from...
(1) Hubble expansion rate
(2) Uranium-238 abundance in old stars
(3) Radioactive dating of old Earth rocks
(4) Dark energy abundance
(5) Globular cluster ages
Choose all of the correct answers
Answers
The Astronomers determine estimates for the age of the universe from (1), (2), (3), and (5).
What is universe?The entirety of time, space, and everything in them, including all known types of matter and energy, make up the universe. Everything that exists is included in it, from the tiniest subatomic particles to the largest known formations, such galaxies and superclusters.
Astronomers have arrived at their estimates for the universe's age in the following ways:
(1) Hubble expansion rate: Using this technique, the redshifts of far-off galaxies are used to calculate the pace at which the universe is expanding. By projecting backwards from the universe's present expansion rate, the age of the universe can be determined.
(2) The amount of the radioactive element uranium-238 in old stars may be measured, and its decay rate can be used to determine the age of the stars and, by extension, the age of the universe.
(3) Radioactive dating of old Earth rocks: This technique entails figuring out the ages of the planet's oldest rocks using radioactive dating methods, which offers a more conservative estimate of the universe's age.
(5) The age of the oldest globular clusters in the Milky Way galaxy can be used to calculate the age of the universe using this approach, which is number five.
Thus, the appropriate choices are (1), (2), (3), and (5). Although it is employed in other cosmological investigations, the amount of dark energy is not used to directly calculate the age of the universe.
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With a small group, discuss whether you
believe Grandin's explanation for the cat's behavior in lines 24-28. Why
or why not?
Answers
Discussing with a small group, Grandin, why or why not? whether you believe cat's behavior
Familiarize yourself with the provided lines: Review the specific lines (24-28) and understand Temple Grandin's explanation for the cat's behavior. Identify the key points she presents and any evidence or reasoning she provides.
Assess the credibility of the explanation: Evaluate the credibility of Temple Grandin as an expert in the field. Consider her background, qualifications, and experience. Determine if her explanation aligns with established scientific knowledge and theories on cat behavior.
Consider alternative explanations: Explore alternative explanations for the cat's behavior. Are there other theories or perspectives that could provide a different understanding? Examine any contrasting evidence or interpretations that challenge Grandin's explanation.
Discuss supporting evidence: Share and discuss any evidence or examples that support or refute Grandin's explanation. Look for empirical studies, research findings, or personal experiences that align with or contradict her claims.
Evaluate the overall plausibility: Based on the information and arguments presented, assess the overall plausibility of Grandin's explanation. Consider the strengths and weaknesses of her reasoning, evidence, and any counterarguments.
Reach a group consensus: Engage in a thoughtful discussion where each participant can express their viewpoints. Evaluate the various perspectives and aim to reach a group consensus on whether Grandin's explanation is believed to be valid or not, taking into account the credibility of the source, supporting evidence, and alternative explanations.
Remember, the goal of the discussion is to critically analyze the explanation, consider multiple viewpoints, and arrive at a reasoned conclusion based on the available information.
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explain the importance of all 3 biomolecules in general and for making ATP.
Answers
The three biomolecules that are used for making ATP are Lipids (fats) , Carbohydrates and Proteins
The biomolecules also known as biological molecules serve a wide range of activities and they vary in shape and their size . It is also considered essential to life because they help organisms develop, survive, and propagate. The biomolecules interact with one another which play a role in the development of organisms .
There are four types of biological molecules which are carbohydrates which is used as an energy source , lipids which is used for storage and support , proteins is used for supporting essential vital functions and amino acids are the developing elements that make up proteins and nucleic acids for storing genetic information .
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What is macroevolution?
Answers
Answer:
major evolutionary change
Explanation: