Biology High School

which macromolecule makes up the majority of the cell membrane?

A.) nucleotide
B.) lipid
C.) protein
D.) carbohydrate

Answers

Answer 1
The answer is
B.) Lipids 


Answer 2

Answer:

B-Lipids

Explanation:

Related Questions

To develop a standard or​ benchmark, firms need to start with
a. collecting benchmarking information.
b. determining what to benchmark.
c. forming a benchmark team.
d. identifying benchmarking partners.

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To develop a standard or​ benchmark, firms need to start with determining what to benchmark.

What important events are in the timeline of the geological and human stories of stories of this geo scenario ?

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the earliest living organisms were microscopic bacteria, which show up in the fossil record as early as 3.4 billion years ago. As their numbers multiplied and supplies of their chemical fuel were eaten up, bacteria sought out an alternative energy source. New varieties began to harness the power of the sun through a biochemical process known as photosynthesis—a move that would ultimately lead to simple plants and which opened the planet up to animal life.

A sample of blood from a mismatched transfusion is observed under the microscope. many large clumps of erythrocytes are observed. which is the antibody responsible for this?

Answers

I believe the antibody responsible for this is IgM. Antibodies are protective proteins produced by the immune system in response to the presence of a foreign substance called, antigen. They recognize and latch onto antigens in order to remove them from the body. IgM is the most abundant antibody that is found in all body fluids and protects against bacterial and viral infections. The IgM that is found mainly in the blood and lymph fluid is the first antibody to be made by the body to fight a new infection.

A large tract of land is purchased by a commercial agricultural company. The land is cleared of its native flora, and a single crop is planted instead. What is the effect of this action?

Answers

Final answer:

Clearing land for a single crop in commercial agriculture can result in the loss of biodiversity, changes in rainfall patterns, and increased vulnerability to pests and diseases.

Explanation:

When a large tract of land is purchased by a commercial agricultural company and cleared of its native flora to plant a single crop, it has several effects. One of the main effects is the loss of biodiversity as native plants and animals are displaced. This type of agricultural practice can also lead to changes in rainfall patterns and frequency and contribute to deforestation. Additionally, relying on a single crop can make the land more vulnerable to pests and diseases.

explain how natural selection related to the development of diversity in and among species during the Mesozoic era

Answers

natural selection allows nature to chose which species survives. Only the fittest get to pass on their genes. And by fittest i mean the ones that are better adapted to the environment.

Survival of the fittest is one most important for the nature where the one who gets adapted gets survived in the nature whereas the one who is not gets demolished.

What is the basic history about evolution regarding nature ?

It is the basic hypothesis that the advanced species are developed from the ancestral ones where the one is having almost the same features but with the advancements in it.

Even during the mesozoic area the fast change in the environment the rapid change in the environment and the atmosphere changing rapidly in terms of adaptations and the living, the nature took the ones who fit the best.

The ones who fit the best in nature that the ones who strongly fit in the nature overcoming all the problems and challenges they face in nature are chosen by nature this is why it is said that it is the survival of the fittest by the nature.

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Which of these is not typical of a condensing protostar?

Answers

Fusion of helium into carbon in their cores

Mendel performed a cross between individuals heterozygous for three different traits: green versus yellow seeds (green is dominant), red versus white flowers (red is dominant), and green versus yellow pods (green is dominant). what fraction of the offspring would have been expected to have green seeds, red flowers, and green pods?

Answers

Probability of Green seed * Red flowers * Green pods

3/4 * 3/4 * 3/4 =27/64

The fraction of offspring expected to have green seeds, red flowers, and green pods would be 27/64.

Assuming that the seed shape, flower color, and pod color are represented by A, B, and C alleles respectively.  

Since the parents involved in the cross are heterozygous for each trait, their genotypes would be AaBbCc each.

                 AaBbCc     x     AaBbCc

See the attached image for the Punnet's square analysis of the cross that results in the offspring with the phenotypic ratio.

The proportion of the offspring with parental phenotypes is 27/64.

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Which of the following correctly compares the changes that take place in an ecosystem during primary succession and secondary succession?


A) Primary succession takes place over a long period of time on newly formed land, while secondary succession occurs quickly in areas that have disrupted by a natural disaster.

B) Primary succession takes place quickly on newly formed land, while secondary succession occurs over a long period of time in an area that has been disrupted by a natural disaster.

C) Primary succession takes place over a long period of time in an area that has been disrupted by a natural disaster, while secondary succession occurs quickly on newly formed land.

D) Primary succession takes place quickly in an area that has been disrupted by a natural disaster, while secondary succession occurs over a long period of time on newly formed land.

Answers

Answer:

The answer is A i just took the test just Now.

Explanation:

Primary succession takes place over a long period of time on newly formed land, while secondary succession occurs quickly in areas that have disrupted by a natural disaster.

Primary succession takes place over a long period of time in an area that has been disrupted by a natural disaster, while secondary succession occurs quickly on newly formed land. The correct option is C.

What is Primary succession?

Primary succession refers to the process of the gradual growth of plant and animal communities on newly formed or exposed land.

Option A is incorrect because primary succession takes place over a long period of time on bare, previously uninhabited land, while secondary succession occurs on land that has already supported life and has been disturbed by a natural or human-caused event.

Option C is correct because primary succession occurs over a long period of time in an area that has been disrupted by a natural disaster, such as a volcanic eruption or glacier retreat, and typically begins with the establishment of pioneer species such as lichens and mosses.

Thus, the correct option is C.

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Woman's bane or wolf's bane is another term for which poison?

Answers

ACONITE

This is from a perennial herbaceous plant native to the mountain in the northern hemisphere. This plant grows well in moisture retentive but well draining soil in the mountain meadows. Death usually occurs within hours upon poisoning with usual symptoms of gastrointestinal such as nausea, vomiting, diarrhea. Others experience burning, tingling sensation and numbnes. In large dose of poisoning, motor weakness can be expected some hypotension, bradycardia, arrhythmia. Treatment is usually supportive and patients must be closely monitored.
Final answer:

Woman's bane or wolf's bane refers to Aconitum, a plant that produces a deadly poison. This can be related to Batesian mimicry, where a highly toxic species resembles a less toxic one, discouraging predators.

Explanation:

The term Woman's bane or wolf's bane is another name for the plant Aconitum, which produces a deadly poison. This fits under the concept of Batesian mimicry because it involves a highly toxic species (Aconitum) that resembles a lower toxic one. Batesian mimicry is when a harmless species imitates the warning signals of a harmful species to fend off predators. For instance, a plant like Aconitum might look visually similar to other less toxic plants, tricking potential predators into avoiding it due to the perceived risk of poisoning.

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A pea plant that is homozygous for yellow pods with wrinkled seeds (ggrr) is cross-bred with a pea plant that is heterozygous for green pods with round seeds (ggrr). how many different genotypes will the offspring of these parents have? what percentage of offspring will have each genotype?

Answers

The correct genotypes of the parents are ggrr for yellow pods with wrinkled seeds and GgRr for heterozygous for green pods with round seeds.
If the heterozygous individuals for both traits express have green pods and round seeds that tells us that these traits are dominant.
In the gross presented below, you can see that the offspring will have 4 different genotypes, all present in an equal percentage:
gGrR 25% 
gGrr  25% 
ggrR 25%
ggrr 25%

Based on the genotype of the parent pea plants, 25% of offspring will have each phenotype.

What is genotype?

Genotype is the sum total of the genes inherited from both parents by offspring.

In a cross between the pea plants with the genotype below, the genotype of the offspring is given as follows:

ggrr × GgrRr = GgRr, ggRr, gGRr, ggrr

Therefore, 25% of offspring will have each phenotype.

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In what way is crossing over important for sexual reproduction

Answers

It allows for genetic variation in the offspring generations. If this genetic variation did not occur, a single disease or natural disaster could wipe out the entire species as all the organisms would be genetically identical.

1. Antibiotics are effective at treating
A.) a common cold, but not genital warts
B.) a tapeworm infection, but not botulism
C.) strep throat, but not the flu
D.) athlete's foot, but not an ear infection

2. The sneezing, runny nose, and itchy eyes associated with allergies are cause when
A.) smooth muscles reduce the size of air passageways in the lungs
B.) the immune system attacks the body's own cells
C.) mast cells release histamines
D.) infected cells produce interferon,

Answers

The answer to question 1 is C: {strep throat but not the flu.} 
Antibiotics are given to treat infections caused by bacteria. Strep throat is caused by a bacterial infection, the flu is caused by a virus. Antibiotics will not work with a viral infection, and if given to treat a viral infection you can be causing more harm than good. Penicillin and amoxicillin are the go to antibiotics for strep throat. 
The answer to question 2 is C: {mast cells release histamines.

discuss how anatomy and embryology are used to support the theory of evolution

Answers

Structural features with a common evolutionary origin are called homologous structures.They can be similar in arrangement or function, showing that species evolved but some kept similar characteristics to those of its ancestors.

Hope this helps!

-Payshence xoxo

An inability to form semantic memories would most likely result from damage to the:

Answers

hippocampus. This is a type of amnesia called anterograde amnesia which manifest as inability to form new memories after the brain was damage. This can also lead to impairment of remembering new facts and events.  The area in the brain that is associated learning and memory is the hippocampus. Any damage in this area whether due to hypoxia, stroke, or any form of pathology can cause anterograde amnesia. This is a part of the limbic system that plays a role in consolidation of short term to long term memory and spatial memory that allows us to navigate. This area is located under the cerebral cortex.

Which term describes and enzyme?

A. Substrate
B. Reactant
C. Catalyst
D. Product

Answers

C. Catalyst because a catalyst has an enzyme
the answer will be C. catalyst 

The major evolutionary episode corresponding most closely in time with the formation of pangaea was the _____.

Answers

PERMIAN EXTINCTIONS

The glial cell that helps to circulate cerebrospinal fluid is the

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Hi, I have a Biology question and would like to get it done tonight, would anyone be able to check it out to see if they can help me?

Which of the following statements explains how science impacts society?
A. Science creates new technology without creating any problems.
B. Science does not affect society as much as some people think.
C. Science creates new technology that benefits society, but it may also create problems.
D. Science does not help us understand the world.

Answers

A. Science creates new technology without creating any problems. 

Answer: C. Science creates new technology that benefits society, but it may also create problems.

Explanation:

Science is a discipline which gives the detailed explanation for the cause of natural events, natural phenomena, or natural processes through experimental evidences and supportive information.

The scientific knowledge can be useful for the development of new technology which can help the society in solving problems associated with the daily life. But can also create problem as with the advent of the technology is expected to adversely affect the natural environment. For example, the use of the fossil fuels to run the vehicle can ultimately affect the environment by causing air pollution due to the emission of the pollutants in the air.

Bacitracin blocks the transport of nag and nam across the cytoplasmic membrane to the cell wall. like other antimicrobials that block cell wall synthesis, this would result in weak cell walls and __________.

Answers

The answer would be: cell lysis due to the effect of osmotic pressure
Cell membrane is important for microorganism because of it separate things outside cells and inside cells. This way, the cell can keep electrolyte and other useful things like carbohydrate and proteins. The cells also dump toxins and dangerous chemical that it produce outside the membrane so it won't damage organs inside the cells. 
Final answer:

Bacitracin inhibits the movement of peptidoglycan precursors, therefore interfering with cell wall synthesis and leading to weak cell walls. This results in bacterial cells being more susceptible to osmotic lysis, causing them to rupture due to a water concentration imbalance.

Explanation:

Bacitracin is an antibiotic that inhibits the movement of peptidoglycan precursors from the cytoplasm to the cell wall, interfering with cell wall synthesis in bacteria. Consequently, this results in the creation of weak cell walls and renders the bacterial cells more susceptible to osmotic lysis. This condition refers to the rupture or disintegration of the cell due to an imbalance in water concentration through the cell membrane. Osmotic lysis may occur in bacteria if too much water moves into the cell, causing it to burst. Essentially, bacitracin creates an environment in which it is difficult for bacteria to maintain their cellular structure, hence aiding in their elimination.

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Two populations of birds in the same ecosystem begin to compete for the same food resources. What will most likely be the result of this interspecific competition? A. There will be a reduction in the population size of one or both species. B. There will be an increase in the population size of one or both species. C. One or both species will emigrate to a new ecosystem. D. One or both species will stop utilizing the shared food resources.

Answers

Answer:

There will be a reduction in the population size of one or both species

Explanation:

Answer:  A. There will be a reduction in the population size of one or both species.

Explanation:

Interspecific competition is an ecological competition which occurs between two distinct species which compete for the same type of resource. According to the competitive exclusion principle, no two species can have the same  ecological niche. The species which is more stronger and superior over the other receives the resources over the other. The other species will decline in number.

According to the given situation if the populations of birds in the same ecosystem begin to compete for the same food resource. There will be a reduction in the population size of one or both species due to the competitive exclusion principle.

Natural selection

A: eliminates favorable traits in a population
B: allows populations to change over time
C: forms new traits in a population
D: concentrates traits in a population

Answers

it would be C because when that happens it gets rid of the faulty genes allowing it to evolve to become stronger :)

He fluid surrounding body cells within the tissues is called

Answers

I think what you are looking for is :

↠ Interstitial fluid

I hope this helps! ☻

Please help me need it ASAP

Answers

What do we know about heredity and sickle cell disease?
Sickle cell disease is the most common inherited blood disorder in the United States. Approximately 100,000 Americans have the disease.

In the United States, sickle cell disease is most prevalent among African Americans. About one in 12 African Americans and about one in 100 Hispanic Americans carry the sickle cell trait, which means they are carriers of the disease.

Sickle cell disease is caused by a mutation in the hemoglobin-Beta gene found on chromosome 11. Hemoglobin transports oxygen from the lungs to other parts of the body. Red blood cells with normal hemoglobin (hemoglobin-A) are smooth and round and glide through blood vessels.

In people with sickle cell disease, abnormal hemoglobin molecules - hemoglobin S - stick to one another and form long, rod-like structures. These structures cause red blood cells to become stiff, assuming a sickle shape. Their shape causes these red blood cells to pile up, causing blockages and damaging vital organs and tissue.

Sickle cells are destroyed rapidly in the bodies of people with the disease, causing anemia. This anemia is what gives the disease its commonly known name - sickle cell anemia.

The sickle cells also block the flow of blood through vessels, resulting in lung tissue damage that causes acute chest syndrome, pain episodes, stroke and priapism (painful, prolonged erection). It also causes damage to the spleen, kidneys and liver. The damage to the spleen makes patients - especially young children - easily overwhelmed by bacterial infections.

A baby born with sickle cell disease inherits a gene for the disorder from both parents. When both parents have the genetic defect, there's a 25 percent chance that each child will be born with sickle cell disease.

If a child inherits only one copy of the defective gene (from either parent), there is a 50 percent chance that the child will carry the sickle cell trait. People who only carry the sickle cell trait typically don't get the disease, but can pass the defective gene on to their children.





Sickle Cell Disease
An inherited disease in which the red blood cells have an abnormal crescent shape, block small blood vessels, and do not last as long as normal red blood cells. Sickle cell anemia is caused by a mutation (change) in a gene.




This is a type of reproduction where one organism divides into two and there is no exchange of genetic information.

Answers


This would be called asexual reproduction. Hope this helps!
This is Asexual reproduction , the process by which a single parent reproduces by itself. Also fun fact normal cell division is also the basis for asexual reproduction.

(5.03 lc)the boxer crab, lybia tesselata, carries a small pair of anemones in its claws. when approached by a predator, it waves the anemones around, presenting the stinging tentacles and chasing away the predator. the anemones benefit by eating food particles from prey that the crab catches. what type of relationship is this?

Answers

I believe it's Mutualism

Answer:

Mutualism

Explanation:

Mutualism is the symbiotic association between two organisms in which both the partners are benefited. In the given example, the boxer crab uses the stinging tentacles of anemone to protect itself from the predators. On the other hand, the anemone is benefited by feeding on the particles from the prey caught by crab. Since both crab and anemone are benefited, it is an example of mutualism.

Can anyone help? Will medal & fan if possible

Answers

What’s the question?

How did darwin use the fossil record to support descent from common ancestors and natural selections?

Answers

According to Darwin related organisms have common ancestors. As adaptive characteristics become more widespread in a population through successive generations, the result is natural selection. Fossils are the preserved remains or traces of animals, plants, and other organisms from the past. They serve as important evidence of evolution since they show that life on earth was once different from what exists on earth today.

Respiration _____, and cellular respiration ______.
a.uses glucose . . . produces glucose
b.produces glucose . . . produces oxygen
c.is gas exchange . . . produces atp
d.produces atp . . . is gas exchange
e.produces glucose . . . is gas exchange

Answers

the answer to this is C
Final answer:

Respiration uses glucose while cellular respiration produces ATP.

Explanation:

In biology, respiration refers to the process by which organisms obtain energy from the breakdown of molecules like glucose. Cellular respiration, on the other hand, is a specific metabolic process that occurs within cells to produce ATP (adenosine triphosphate), the energy currency of the cell.

So, the correct answer is d. Respiration uses glucose to produce ATP, while cellular respiration is the process of producing ATP through the breakdown of glucose or other molecules.

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If you see two people walking and holding hands, you perceive that they are a couple because of the Gestalt principle of

Answers

Proximity

Proximity occurs when elements are in place together. This is usually perceived as a group. This is usually done when objects/person are in close proximity unity occurs. This is because the eye differentiate an object from the surrounding area. When objects are place without proximity. They will be perceived as separate objects. Proximity can be applied even if there is variation in sizes shape and even if it is radically different.

Which type of plant has seeds protected by ovary layers

Answers

Angiosperms have seeds protected by an ovary which develops into the fruit.Hope this helps!

-Payshence xoxo

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