White blood cells work by recognizing invading pathogens by their surface fragments, called __________.

Answers

Answer 1

Answer:

white blood cells that systematically envelop and kill pathogens such as bacteria, viruses, and fungi, worn-out body cells, and cells that have become cancerous. their surface fragments, called antigens, literally antibody generators.

Explanation:


Related Questions

Which greenhouse gas has an average lifetime in the atmosphere of a few weeks to thousands of years and is the largest contributor to climate change?

Answers

Answer:

Greenhouse gases from human activities are the most significant driver of observed climate change since the mid-20th century.1 The indicators in this chapter characterize emissions of the major greenhouse gases resulting from human activities, the concentrations of these gases in the atmosphere, and how emissions and concentrations have changed over time. When comparing emissions of different gases, these indicators use a concept called “global warming potential” to convert amounts of other gases into carbon dioxide equivalents.

Explanation:

Why does it matter?

As greenhouse gas emissions from human activities increase, they build up in the atmosphere and warm the climate, leading to many other changes around the world—in the atmosphere, on land, and in the oceans. The indicators in other chapters of this report illustrate many of these changes, which have both positive and negative effects on people, society, and the environment—including plants and animals. Because many of the major greenhouse gases stay in the atmosphere for tens to hundreds of years after being released, their warming effects on the climate persist over a long time and can therefore affect both present and future generations.

Answer: carbon dioxide

Explanation:

EDGE2020

If an egg with 22 chromosomes is fertilized by a normal sperm with 23 chromosomes the result is a condition called

Answers

Answer: the answer is monosomy

Which statement explains why oxygen molecules easily diffuse across a cell
membrane while DNA molecules do not?
A. Oxygen molecules are more useful to a cell than are DNA
molecules.
O B. DNA molecules contain carbon atoms, while oxygen molecules
have only oxygen atoms.
C. Oxygen molecules are very small, while DNA molecules are very
large.
D. DNA molecules have phosphate groups that the cell membrane
repels.

Answers

Answer:

C.

Oxygen molecules are very small, while DNA molecules are very large.

An experiment was conducted to determine whether a deficiency of carbon dioxide in the soil affects the phenotype of peas. Listed below are the phenotype codes where 1=smooth-yellow​, 2=smooth-green​, 3=wrinkled-yellow​, and 4=wrinkled-green. Do the results make​ sense?

Answers

Answer:

No

Explanation:

The results of the phenotype do not make any sense in relation to the main aim of the experiment.

Smooth, wrinkled, yellow, green describe attributes relating to seed texture and flower colours in a result that simulates that of a plant breeding experiment, rather than a plant physiology experiment.

The determination of the effects of carbon dioxide deficiency in the soil on the phenotypes of peas is a physiological experiment. Hence, a result in the form of a plant breeding experiment would make not be relevant.

do thyroid hormones influence heart rate from influencing the heart itself, or the attached to it?

Answers

Answer:

An excess of thyroid hormones increases cardiac contractility and resting heart rate (see box below). Cardiac output may increase by 50-300 per cent as a result of the combined effect of increases in resting heart rate, contractility, ejection fraction and blood volume, with a concomitant decrease in SVR.

How is The processes of photosynthesis and respiration are interrelated

Answers

[tex]\color{Black}\huge{Answer} [/tex]

Photosynthesis converts carbon dioxide and water into oxygen and glucose. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.

Answer:

Carbon dioxide and water are converted to oxygen and glucose through photosynthesis.

Oxygen and glucose are converted into water and carbon dioxide through cellular respiration.

By-products include water and carbon dioxide, while ATP is the energy generated by the process.

Explanation:

Plants use light water and carbon dioxide to make energy (glucose) and oxygen through photosynthesis. The oxygen is released into the atmosphere while the glucose powers the plant's operations. The process through which animals mix glucose and oxygen to make carbon dioxide and water is known as cellular respiration.

Photosynthesis end product is glucose utilised for the production of ATP in the cellular breathing. Glucose is then returned to carbon dioxide, needed for photosynthesis. During photosynthesis, the water is broken down into oxygen, but oxygen is mixed with hydrogen into water in cell respiration.

MCQ ...help me........​It's a last question

Answers

It would be C !!!!!!!

ANALYZE How could scientists use data from tree rings to learn more about ecosystems
in the past? Use evidence from the tree ring in Figure 2a to support your answer.

Answers

Tree rings can be used to help analyze the age of the tree, but also to estimate the weather during a specific period of the life of the tree. Tree rings can show information such as precipitation and temperature.

Describe these findings, and explaine their significants; epicanthal fold; pseudostrabismus; ophthalmia neonatorum; Brushfield spots.

Answers

-epicanthic fold: skin across the inner corner of the eye (canthus).
-pseudostrabismus: the appearance of strabismus because of epicanthic fold but is normal for a young child.
-Ophthalmia neonatorum, conjunctivitis of the newborn: purulent discharge caused by a chemical irritant or a bacterial or viral agent from the birth canal.
-brushfield spots: white specks around the edge of the iris.

What is the probability of the offspring having hemophilia for the cross that is shown in the Punnett square?

Answers

Answer:

Probability of having haemophilia for the cross having genes Hh and Hh is 25 percent. Probability of having haemophilia for the cross having genes hh and hh is 100 percent.

Explanation:

Answer:

C. 50%

Explanation:

correct on edg.

the basic structural and functional unit of the living organism is​

Answers

Answer:

cell

Explanation:

The cell is the fundamental unit of structure and function in living things. All organisms are made up of one or more cells. Cells arise from other cells through cellular division.

In a population of mole-rats, some have a little larger teeth and longer claws. If those particular mole-rats survive because they can dig quicker and the others are preyed on and do not survive to reproduce, what will eventually happen in subsequent generations?

Answers

Answer:

One increase in population and the other decrease.

Explanation:

The population of the rats having little larger teeth and longer claws increases as compared to those rats having small teeth and shorter claws because the rats can escape from their predators and survive in that environmental conditions. The population of rats  having small teeth and shorter claws extinct in the end due to no reproduction and preyed by the predators and dominated by the population of the rats having little larger teeth and longer claws due to their features.

write a report on storm around the world​

Answers

The U.S. central plains region -- nicknamed Tornado Alley -- suffers the highest frequency of tornadoes in the world [source: Tarbuck]. Many of these twisters leave death, injury and destruction in their wake, but one stands in a class by itself.

Sweeping out from southeastern Missouri on March 18, 1925, the Tri-State Tornado careened across the southern tip of Illinois before dissipating in lower Indiana. Remarkably, these three locales lie 219 miles (352 kilometers) apart, and the tornado traveled this distance in just three and a half hours [source: SEMP].
With up to 155-mph winds, Hurricane Iota smashed record books on Nov. 16 as the strongest hurricane ever recorded to make landfall in Nicaragua. Iota reached Category 5 strength before making landfall as a Category 4 storm near the town of Haulover, Nicaragua.

The onslaught of destructive winds and heavy rainfall was unfortunately familiar to a region that recently suffered another Category 4 landfalling storm – Hurricane Eta – just two weeks earlier. Eta was a Category 4 storm with 140-mph winds when it landed in Nicaragua on Nov. 3 before ripping a wide path of destruction through Honduras and Guatemala.

Heavy rainfall from these two storm systems brought widespread flooding to the region, triggered large and numerous landslides in Guatemala and Honduras, and was responsible for numerous casualties.

NASA’s Earth Applied Sciences Disasters Program supports disaster response and risk reduction efforts throughout the world — before, during, and after disasters strike – and is working to aid Central America with the impacts from these storms.

In the case of Eta and Iota, the Program is using imagery and data from Earth-observing satellites to provide scientific analysis to Guatemala’s National Coordinator for Disaster Reduction and is working with the Coordination Center for Disaster Prevention in Central America. The multi-agency collaboration is assisting local governments in Nicaragua, Honduras and Guatemala, El Salvador, Belize, Costa Rica, and Panama. The Program is also working with U.S. Southern Command to provide situational awareness for potential emergency humanitarian assistance.

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Which of the following adaptations would you expect to find in an animal in the taiga biome, but not in the alpine? a. hibernation b. migration C. large lungs d. large paws​

Answers

You would expect to find C. Large Paws in the taiga biome, but not in the alpine.

Answer:

D- Large pawls

Explanation:

edg

The role played by the systems of the body in ensuring survival of farm animals in hot and dry climates

Answers

Answer:

Answer to the following question is as follows;

Explanation:

Domesticated animals have a natural instinct to seek out cover and seek refuge from the scorching heat. Their bodies, on the other hand, have inherent defensive systems to help them cope with heat and dryness. One of these is their covering or fur, which gives sun protection.

Animals living in hot, dry climates consume a lot of water, which is subsequently stored in their tissues to keep them from becoming dehydrated. Sweating is accomplished by certain animals by keeping their mouths open.

Compare and contrast the cell structures / organelles found in plant and animal cells.

list 3 organelle/structures plant and animal cells have that are the same
list 2 organelles/structures plant and animal cells have that are different

Answers

Answer:

They both have a cell membrane.

they both have a nucleus

they both have the endoplasmic reticulum

Explanation:

One has a cell wall

one has a big vacuole and the other have many little vacuoles

Does humus contain rocks? 20 points.

Answers

Answer:

Yes

Explanation:

Humus contain very small rocks, it is the upper part of the soil, it includes remains of dead plants and animals.

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A seedling sprouts and its roots crack apart concrete, it is a type of _________ weathering. A. Organic B. Physical C. Chemical D. Biological Hurry!

Answers

Answer:

The correct answer is - D. biological.

Explanation:

Wheathering is the process of breaking of the rocks or soil. It can be of different types on the factors such as chemical wheathering, physical wheathering and biological wheathering.

When a seed fall on to on a rock surface its sprouts, push roots into cracks in the rock or concrete. As the roots of plants develop, they secrete weak acids that slowly dissolve rock around the roots.

It is a type of biological wheathering.

Type the correct answer in the box. Soybean oil is used in food production and cooking. In 2007, the United States produced 3.06 billion bushels of soybeans, and 65% of the harvest was used to make soybean oil. billion bushels of soybean oil were used for other purposes.

Answers

Answer:

Soybean oil is used in food production and cooking. True

In 2007, the United States produced 3.06 billion bushels of soybeans, and 65% of the harvest was used to make soybean oil. True

billion bushels of soybean oil were used for other purposes. False

Explanation:

Soybean oil is used in food production and for the purpose of cooking. The United States produced about 3.06 billion bushels of soybeans, and 65% of the harvest was used to make soybean oil in the year 2007. No, billion bushels of soybean oil were not used for other purposes such as in paints whereas large amount of soybean is used as a cooing oil which have many health benefits.

Answer:

1.071 billion

Explanation:

What is true of mechanoreceptors?

A) They sense light
B) They sense heat/cold
C) They respond to pressure, movement, and tension.
D) They monitor pain
E) Other:

Answers

Answer:

C) They respond to pressure, movement, and tension.

Explanation:

Mechanoreceptors are a type of somatosensory receptors which relay extracellular stimulus to intracellular signal transduction through mechanically gated ion channels. The external stimuli are usually in the form of touch, pressure, stretching, sound waves, and motion.

c they respond to pressure and movement and tension

A population of rabbits has individuals with fur coloring that ranges from white to brown. The population lives in a temperate deciduous forest where the summers are mild and average about 50°F. The winters are often below freezing.

If warmer temperatures last longer into the fall and the average temperature in the winter is getting warmer, what do you expect to happen to the population?
The percentage of the population with brown fur will decrease.
The percentage of the population with white fur will decrease.
The population will increase in size, but the color percentages will remain unchanged.
The population will decrease in size, but the color percentages will remain unchanged.

Answers

Answer:

The best option for this problem would be the second option: "The percentage of the population with white fur will decrease"

Explanation:

Think about animals up in the north. Most of them are white because it helps them blend in the snow. And so an increase in average temperatures would mean less snow time. This would mean that the white rabbits will be more vulnerable to attacks for a longer time period of the year compared to previous years with a short time period of being vulnerable.

Answer:

b

Explanation:

got it right on edge 2022

When you did the Homeostasis Exercise Lab yesterday, what was the dependent variable?

A) Heart rate
B) Breathing rate
C) Both Heart rate and Breathing rate
D) Time

Answers

Both heart rate and breathing rate

Question in the picture

Answers

Answer:

A.

Explanation:

It's sugar or glucose and oxygen

What are the positive effects human activities on vegetation?​

Answers

Answer:

Vegetation cover is also significantly impacted by human activities. Changes in land use resulting from human activities such as urbanization and agriculture are important factors influencing the spatial pattern of vegetation.

Answer:

Vegetation plays a vital role in our natural ecosystem and also supports the biosphere in various ways; vegetation helps to regulate the flow of numerous biogeochemical cycles, most importantly those of water, carbon, and nitrogen; it also contributes in the local and global energy balances. With the continuous increase in the population, the negative impact of human activities on the ecological environment is also increasing, such as overgrazing caused by the rapid increase of livestock.

on which surfaces did you move the box easily?

Answers

Answer:

water

Explanation:

because the surface of water is slippery

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why is it a good idea for a bacterial cell to be abel to use glucose first as an energy source then switch to lactose

Answers

Answer:

Due to less steps and requires less energy.

Explanation:

The bacterial cell is able to use glucose first as an energy source then switch to lactose because glucose requires less steps and less amount of energy for the break down as compared to lactose. If lactose is the only sugar available to the bacterial cells, then bacterial cells will use it as energy source for the production of energy. In order to use lactose, the bacteria must express the lac operon genes, which encode the main enzymes for lactose uptake and metabolism.

In the life cycle of zygomycota fungi, the filamentous, asexually reproducing forms visible to the human eye are called:

Answers

Answer:

hyphae

Explanation:

In the asexual phase of their life cycle, the hyphae produce sporangiospores. The group of fungi known as Zygomycota develop sporangia within a sac, which bursts to release the spores, germinating into a new hypha.


The following table describes some landforms.
Landform
Created By
Found in
Wind erosion Water or glacial erosion Depositions Deserts Coasts Mountains
Yes
No
Yes
Yes
No
No
| A
Yes
No
B
Yes
Yes
Yes
No
No
Yes
с
No
No
No
Yes
No
No
D
No
No
No
No
Which landform is most likely a coastline?
Landform A
Landform B
O Landform C
Landform D

Answers

Answer:

landform D is most likely a cost line

All organisms need a place to live that provides? I

Answers

Answer:

food shelter water

Explanation:

food shelter water

What causes global circulation?
1. the Earth's core cools down some areas more than others
2. parts of the world heat up differently
3. the water in the oceans acts as an insulator
4. the sun stops emitting radiation at night

Answers

Answer:

parts of the world heat up differently

Explanation:

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