Answer:
Exogenous antigens include particles considered foreign within the organism. For example, allergens (such as pollen), proteins from transplanted tissues and organs, and parts of microorganisms (such as coat, capsule, cell wall, flagella, fimbria, or toxin of bacteria, viruses, etc.)viral proteins produced during viral replication;proteins produced by intracellular bacteria such as Rickettsias and Chlamydias during their replication;proteins that have escaped into the cytosol from the phagosome of phagocytes such as antigen-presenting cells;
how is the process in which the ice melts?
Explanation:
it is an endothermic process
Hope I helped
What is the rounded proximal end of a long bone
Answer:
epiphyses (Just typing more so brainly lets me post this)
Answer:
It is called the proximal epiphysis.
What do these two changes have in common?
snails growing shells
sauce burning on a stove
Select all that apply.
Both are only physical changes.
Both are chemical changes.
Both are caused by heating.
Both are caused by cooling.
Why cereals is regarded as staff of life
Answer:
because is very important
.........
how do i do these? please help this is due today :)
Answer:
just look up the meaning of heterozygous anywho for 7 the answer is the leaf will be wrinkled and so will number 8 i think...it needs a coma.
Explanation:
the meaning of heterozygous is its the opposite of what it is
Do the physical characteristics given identify characteristics of the Sun, Earth, or Moon?
unable to support life; made of gases; diameter approximately 870,000 miles
Earth
Earth and Sun
Moon
Sun
Answer:
Sun
Explanation:
Would you expect EMP glycolysis or Pentose phosphate pathway to be favored during growth on minimal media vs complex media? What about in log vs. stationary phase?
We have that this can be said about the minimal media vs complex media and about in log vs. stationary phase
The pentose phosphate pathway is simply incompletely existingThe dying stage is portrayed through an exquisite abatement in the extent of the dwelling cells.GlycolysisEMP glycolysis and Pentose phosphate pathway choose at some point of improvement on insignificant media versus complicated media.
The pentose phosphate pathway is simply incompletely existing , and the pentose debasement likewise basically contrasts from that acknowledged for bacterial model natural entities.
Finally,the dramatic stage is a length of great development.
The dying stage is portrayed through an exquisite abatement in the extent of the dwelling cells.
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What is the classification of a corn plant? ( please state the answer formally and accurately )
Complete this sentence: About as much as 90 percent of energy is ________ at every trophic level, due to metabolic processes.
- received
- lost
- destroyed
- recycled
Answer:
lost
Explanation:
Energy is lost at each trophic level
Answer: Its Lost!!
Explanation: I GOT IT RIGHT ON THE TEST WOOOOOOOOO
What factors help determine how
damaging a cancer can be for an
individual?
A. age of the individual and body mass index
B. diet of the individual and age
C. location of the tumor and how fast it is spreading
Answer:
C. Location of the tumor and how fast it is spreading
Explanation:
Cancer can small and only in a particular area or big spreading fast.
what is a niche
i need help on this
Answer:
a role of a organism in a ecosystem
Explanation:
i hope this helps
Trevor is a 20-year-old male presenting with a history of fatigue, shortness of breath, gallstones, and yellowing of the skin and eyes (jaundice). An examination of his blood reveals his red blood cells have an abnormal elliptical shape which causes premature damage and rupture of the cells. Trevor is diagnosed with a genetic disease, Hereditary elliptocytosis. The disease is caused by mutations in some of the proteins of the membrane skeletal network responsible for the stability of the red blood cell. What organelle is defective in Trevor's red blood cells?
These cells are also characterized by having no nucleus, being devoid of organelles. So no organelles are missing from trevor's red cells.
What is Hereditary elliptocytosis?Hereditary spherocytosis and elliptocytosis are congenital disorders of the erythrocyte membranes that cause mild hemolytic anemia. Symptoms, usually milder in hereditary elliptocytosis, include varying degrees of
AnemiaJaundiceand Splenomegaly.Diagnosis requires demonstration of increased osmotic fragility of erythrocytes and a negative direct antiglobulin test. Rarely, patients < 45 years of age with symptomatic disease require splenectomy.
With this information, we can conclude that the red cells of Trevor do not have organelles, a fact that is not altered by their condition (Hereditary elliptocytosis).
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Kudzu, a plant native to eastern Asia was introduced into America in 1876. In 1935, kudzu was planted along southern roadways to control soil erosion. Adding a foot of vine a day in the spring and summer, kudzu quickly grew out of control. Why can introducing a new species to an existing ecosystem often be a disaster?
A. The new species can rapidly evolve into a dangerous subspecies that cannot be destroyed.
B. The new species can harm native organisms and damage the ecosystem.
C. The new species can create excess nutrients in the soil that can damage native species.
D. The new species can eventually become extinct.
Answer:
The best answer is B.
Explanation:
Since Kudzu is a foreign plant introducing it to the United States could damage the ecosystem since the ecosystem here is not "designed" to handle the Kudzu. This could cause a chain reaction along the food web and can potentialy wipe out local organisms.
decide which examples are most likely to increase variation or decrease variation. Some examples could do both. Which of the following could possibly increase gentic variation indirectly
Answer:
The following could possibly increase genetic variation indirectly is Increase food supply , Toxin , and New habitat.The following information should be considered;Genetic variation means the diversity in gene frequencies. Genetic variation could also mean that differences between individualsor to differences between populations.It could be increased by the above reasons.
Explanation:
Assume that the genes from the previous example are located along the chromosome in the order X, Y, and Z. What is the probability of recombination between genes X and Z
Knowing the order or the genes in the chromosome and the recombination frequencies in region 1 and 2, we can assume that there are 30% the probability of recombination between genes X and Z.
Recombination frequencyWhen talking about recombination frequencies, we are refering to the probabilities of recombination or crossing over between two genes.
When these genes are too close in the same chromosome, we say they are linked, and the recombination frequency might be too small.
Crossing-over between linked genes that are very close to each other in the chromosome is not that common.
A short distance between genes is a very little target for crossing-over to occur, which means that only a few of them will happen, compared with the number of events between genes that are more separated between each other.
Available data
The recombination frequency between X and Y = 25%The recombination frequency betqeen Y and Z = 5%The order of the genes in the chromosome is X, Y, ZHere we have the recombination frequency in region 1 (X-Y) and the recombination frequency in region 2 (Y-Z).
To get the value of the recombination frequency between the two extremes, we just need to add the two regions values.
R1 + R2 = Rt
25% + 5% = 30%
X----------R1----------------Y-----R2----- Z
X----------25%-------------Y------5%----Z
X-----------------------30%-----------------Z
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I will mark brainiest for correct answers!
1• Studying a picture of a cell taken with a microscope, you find that the cell has a nucleus, cell wall, and plastids. You conclude that the cell is probably a(n) _____ cell.
A) animal
B) plant
C) prokaryotic
D) eukaryotic
2• Studying a picture of a cell taken with a microscope, you find that the cell has no nucleus and no mitochondria, but does have a cell membrane and a cell wall. You conclude that the cell is probably a(n) ____ cell.
A) animal
B) plant
C) prokaryotic
D) eukaryotic
Answer:
#1 is D Eukaryotic
#2 is C prokaryotic
Explanation: 1)D 2)C
How a commitment to a decision could assist a school leaver to adapt to the change of entrepreneurship
A commitment to a decision can help a school dropout to adapt to the changing entrepreneurship, because this student is convinced of their needs and tasks.
What is a commitment?A commitment is an agreement between two parties that something will be done. A courtship is considered a commitment, a marriage too. When a person is said to be "committed" it is because he or she has established a commitment of fidelity to the other in the form of a loving relationship.
With this information, we can conclude that the student's sense of commitment made him a focused and motivated person to achieve his goals.
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Genetic engineering is a branch of science that uses biotechnology tools to make modifications to organisms to express new phenotypes. One application of genetic engineering is creating genetically modified crops. Assess which of the statements applies to the field of biotechnology and genetic engineering in an accurate manner. You may select more than one correct answer.
A) Genetically modified foods are dangerous for human consumption.
B) Genetically modified crops can contain DNA from two different species.
C) Genetically modified crops increase the genetic diversity of a species.
D) Genetically modified crops may grow in areas outside of the native range.
E) Genetic modification can create improved crops faster than traditional selective breeding programs.
Answer:
BCD
Explanation:
Just got that question wrong in Test Prep
Explain why it’s important for the cell membrane to be fluid
Answer:
Cell membrane is fluid because individual phospholipid molecules and proteins can diffuse within their monolayer and thus move around.
Explanation:
in what cell organelle does photosynthesis occur?cellular respiration?
Photosynthesis occurs in chloroplasts and cellular respiration occurs in mitochondria.
What do you mean by cellular respiration?Cellular respiration is the process by which biological fuels are oxidised in the presence of an inorganic electron acceptor such as oxygen to produce large amounts of energy, to drive the bulk production of ATP.
Cellular respiration is a series of chemical reactions that break down glucose to produce ATP, which may be used as energy to power many reactions throughout the body.
Cellular respiration takes place in both the cytosol and mitochondria of cells. Glycolysis takes place in the cytosol, whereas pyruvate oxidation, the Krebs cycle, and oxidative phosphorylation occur in the mitochondrion.
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In ancient Greece, Aristotle developed a system of classification which was used for the next 2000 years to describe relationships between living things. Which of the following questions would be most difficult to answer based on Aristotle's classification of living things?
Are cows more complex than oak trees?
Are tomato plants higher or lower than snails?
Which species shows less complexity, a cat, or a dog?
Which organism is lower, a squirrel or a lobster?
Are cows more complex than oak trees? and ''Which species shows less complexity, a cat, or a dog?'' are the questions that would be most difficult.
Aristotle's classification of living thingsThe above question would be difficult to answer based on Aristotle's classification of living things because the Aristotle's classification of living things is not able to answer such complex questions.
There is no technology at that time which can make the complex structure of organisms so we can conclude that cows more complex than oak trees? and ''Which species shows less complexity, a cat, or a dog?'' are the questions that would be most difficult.
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pls help me asapp!!
Are these biology answers correct?
Explain why it would not be possible to accurately measure hemoglobin concentration if the RBCs were not first lysed
We have that the structure of Red blood cells, causes the membranous shade to be lysed to get precise hemoglobin level.
Red blood CellGenerally, the Red blood cell is blanketed with the help of proteins and lipids, the purple shade of Red blood cells or blood is due to the presence of hemoglobin.
Hemoglobin is considered in the central phase of the pink blood cell. Red blood cells lacks nucleus.
The structure of Red blood cells, causes the membranous shade to be lysed to get precise hemoglobin level.
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Need help with question
Answer:
C : Producers capture energy and convert it for all organisms to use
what is the process of photosynthesis
The process of photosynthesis is the synthesis of food molecules from inorganic compounds using energy from sunlight.
WHAT IS PHOTOSYNTHESIS?Photosynthesis is the process whereby green plants obtain their food (glucose) in the presence of sunlight as an energy source.
Photosynthesis takes place in two stages namely;
Light dependent reactionsLight independent reactionsPhotosynthesis combines carbon dioxide and water as reactants as follows:
6CO2 + 6H2O = C6H12O6 + 6O2
Therefore, the process of photosynthesis is the synthesis of food molecules from inorganic compounds using energy from sunlight.
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One function of the poly-A tail on eukaryotic mRNA sequences is to help the mRNA
be transported from the nucleus to the cytoplasm. Prokaryotic mRNA also has a
poly-A tail. Choose the best explanation of the prokaryotic poly-A tail.
A. Prokaryotic poly- A tails aren’t important, because prokaryotes don’t have nuclei
B. Prokaryotic poly A tails have the same functions as eukaryotic poly-A tails, because this process is highly conserved throughout different species.
C. Prokaryotic poly A tails are composed of a different molecular structure compared with eukaryotic poly- A tails
D. Prokaryotic poly- A tails have other functions, because prokaryotes don’t have nuclei
Answer: D
Prokaryotic poly-A tails have other functions, because prokaryotes don't have nuclei.
Explanation: It's an extension of the prokaryotic cell, because of its lack of a nucleus.
Describe the currents that form along the equator.
The currents that form along the equator are known as equatorial currents. These currents are driven by the trade winds and the Earth's rotation, creating a unique circulation pattern in the ocean.
There are two main equatorial currents:
Equatorial Counter Current: This current flows eastward along the equator, opposing the direction of the trade winds. North Equatorial Current and South Equatorial Current: These currents flow westward on either side of the equator.The equatorial currents play a significant role in redistributing heat across the ocean and influencing climate patterns.
Thus, the equatorial currents along the equator are dynamic and essential components of the global ocean circulation system, playing a crucial role in the Earth's climate system.
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Elements with symbols using their first two letters
Answer:
Co cobalt
Cu copper
Cm curium
Explanation:
For the lac operon, when glucose is absent and lactose is present ___________ Group of answer choices cAMP-CAP is bound to the operator and the repressor is not bound to the promoter cAMP-CAP is not bound to the promoter and the repressor is bound to the operator cAMP-CAP is bound to the promoter and the repressor is not bound to the operator None of the options
Answer: cAMP-CAP is not bound to the promoter and the repressor is bound to the operator.
Explanation:
cAMP levels are going to be low because glucose is not present, so CAP is inactive and will NOT bound to the DNA.