Answer:
This is because Earth has 71 percent water.
What is the average speed of a soccer ball that travels 34 m in 2s?
Answer:
17 m/s
Explanation:
s=d/t
s=34m/2s
Answer:
34/2 = 17 m/s
Explanation:
Distance Covered: s = 34 m
Time in which distance covered: t = 2 s
----
Average Speed: v = Distance Covered/time taken = s/t
v = 34/2
v = 17 m/s
I hope this helps explain things a little better.
1- why dong you usually get sick from the exact same pathogen twice
2-if a pathogen mutated so it had different antigens, would your memory B and memory T cells recognize it?
please help this is due at 3pm
1: For example, rhinovirus has over 100 different serotypes. Now, the good news is that you can't get ill from the same virus serotype right after getting better, due to the fact that you'll have developed antibodies which help to protect your immune system for a little while.
2:Most children in the United States are now vaccinated against measles virus; before vaccination was widespread, most were naturally exposed to this virus and suffered from an acute, unpleasant, and potentially dangerous viral illness. Whether through vaccination or infection, children exposed to the virus acquire long-term protection from measles. The same is true of many other acute infectious diseases: this state of protection is a consequence of immunological memory.
The basis of immunological memory has been hard to explore experimentally. Although the phenomenon was first recorded by the ancient Greeks and has been exploited routinely in vaccination programs for over 200 years, it is just now becoming clear that memory reflects a persistent population of specialized memory cells that is independent of the continued persistence of the original antigen that induced them. This mechanism of maintaining memory is consistent with the finding that only individuals who were themselves previously exposed to a given infectious agent are immune, and that memory is not dependent on repeated exposure to infection as a result of contacts with other infected individuals. This was established by observations made on remote island populations, where a virus such as measles can cause an epidemic, infecting all people living on the island at that time, after which the virus disappears for many years. On reintroduction from outside the island, the virus does not affect the original population but causes disease in those people born since the first epidemic. This means that immunological memory need not be maintained by repeated exposure to infectious virus
Explain why Hurricane Harvey traveled from the east (Africa) towards the west (Florida) when our weather in Wisconsin starts in the west and travels east?
PLEASE HELP!
Answer:
Due presence of Sahara desert that is responsible for the formation of this hurricane and its movement towards Florida.
Explanation:
Hurricane Harvey traveled from the Africa towards the Florida because these hurricane formed at the African region due to the presence of Sahara desert. The hot and dry wind of Sahara desert meets with the cool, moist air from the south produces these hurricane which then moves from the Africa to the west side where Florida is located so that's why Hurricane Harvey traveled from Africa towards the Florida.
PLEASE HELP!!!! I JUST NEED THIS INFORMATION SO I CAN START!!!
One of Jase's favorite hobbies is catching frogs. Lately, he 's also been studying a lot He about physical chemical changes. He understands that new substances are produced during a chemical change, but what happens during a physical change?
Answer:
On explanation
Explanation:
A physical change when objects or substances undergo a change that does not change their chemical composition, examples would include melting, transition to a gas, textural change, shape, size, color, volume and density.
What is the function of the flower in plant reproduction?
disperses seeds
captures sunlight
protects the stem
attracts pollinators
Answer:
attracts pollinators
Which structure carries instructions for producing the proteins that help make a person’s hair curly?
Which statement describes an advantage of asexual reproduction?
O Asexual reproduction results in variations in DNA.
O AsexXual reproduction causes less competition for resources.
O Asexual reproduction is faster than sexual reproduction.
O Asexual reproduction requires more energy than sexual reproduction.
Answer:
Asexual reproduction results in variations in DNA.Explanation:
what traits do viruses share with living things?
Answer: Viruses are infectious agents with both living and nonliving characteristics. Living characteristics of viruses include the ability to reproduce – but only in living host cells – and the ability to mutate.
Explanation:
googles word not mines, but put it in your own.
In {external fertilization,
internal fertilization,
conjugation, or pollination}
mating partners come close to one another and release eggs and sperm.
Answer:
Explanation External fertilization is characterized by the release sperm and eggs into In fertilization protects the fertilized egg or embryo from predation an Ovoviparity is characterized by an organism retaining a fertilized egg
Some vitamins are mostly found in animal-based foods, while some vitamins are abundant in plant-based foods. The best source of vitamin C is ____ , while ____ is naturally rich in vitamin B12. First blank: cheddar cheese, strawberries, lentils Second blank: fish, broccoli, peanut butter
Answer:
I did this for my test and had them correct
1. strawberries
2. fish
Explanation:
As per the given scenario, The best source of vitamin C is strawberries, while fish is naturally rich in vitamin B12. The correct option for first blank is B, and for second one is A.
What are vitamins?A vitamin is an organic molecule that is an essential micronutrient that an organism requires in small amounts for proper metabolism function.
Fat-soluble vitamins are stored in the liver, fatty tissue, and muscles of the body. Vitamins A, D, E, and K are the four fat-soluble vitamins.
Water-soluble vitamins do not accumulate in the body. Vitamin C and all of the B vitamins are among the nine water-soluble vitamins.
As per the given scenario, The best source of vitamin C is strawberries, while fish is naturally rich in vitamin B12.
Thus, the correct option for first blank is B, and for second one is A.
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Which statement is False?
A.) Both Eukaryotic and Prokaryotic cells have genetic information (DNA), cytoplasm, ribosomes and a cell membrane.
B.) The cell membrane (made up of lipids) is "semi-permeable" which means it only let's certain materials in and out, and helps keep cells stable, which is known as "homeostatis".
C.) Cells contain a cytoskeleton, which is a collection of fibers that provide support for organelles and aides in the cells internal movements.
D.) Eukaryotes do not have a nucleus, nor do they have "membrane bound organelles", like the golgi apparatus or the endoplasmic reticulum (ER)
Answer:a
Explanation:
After cell division (mitosis) how does the genetic code of the newly
produced cells compare to the code of the parent cell?
Answer:
Chromosomes were first named by cytologists viewing dividing cells through a microscope. The modern definition of a chromosome now includes the function of heredity and the chemical composition. A chromosome is a DNA molecule that carries all or part of the hereditary information of an organism. In eukaryotic cells, the DNA is packaged with proteins in the nucleus, and varies in structure and appearance at different parts of the cell cycle.
Explanation:
Cells reproduce genetically identical copies of themselves by cycles of cell growth and division. The cell cycle diagram on the left shows that a cell division cycle consists of 4 stages:
G1 is the period after cell division, and before the start of DNA replication. Cells grow and monitor their environment to determine whether they should initiate another round of cell division.
S is the period of DNA synthesis, where cells replicate their chromosomes.
G2 is the period between the end of DNA replication and the start of cell division. Cells check to make sure DNA replication has successfully completed, and make any necessary repairs.
M is the actual period of cell division, consisting of prophase, metaphase, anaphase, telophase, and cytokinesis.
. If fossil X had an original mass of 600 grams of Carbon-14, and now only has 9.375 grams of Carbon-14, how old is this fossil? (Enter your answer as only a number with comma(s) where needed- do not add years old, yr. old, etc... only the number)
Answer:6000
Explanation:
What would happen to a freshwater fish in the ocean?
a its cells would not swell or shrink
b. its cells would shrink and the fish would die
cits cells would swell and the fish would die
Cells perform many functions in living organisms. Which of the following processes occur in cells? *
A:excreting wastes
B:extracting energy
C:obtaining nutrients
D:all of these
Answer:
The answer would be D
Explanation:
Answer:
B
Explanation:
b) extracting energy
Which of the following is NOT true of plants?
A
Plants help remove some toxins from the air.
B
Some plants pollinate with help from the wind.
С
Plants remove carbon dioxide and release oxygen into the air.
D
Plants remove oxygen and release carbon dioxide into the air.
Answer:
D
Explanation:
Answer:
D
Explanation:
What caused the chromosomal alteration in the number 21 chromosomes? (LS3.2) A. Part of one chromosome attached to another chromosome B. Some of the genes on a chromosome were reversed C. A duplicated chromosome failed to separate during meiosis D. A part of a chromosome was lost
Answer:
The correct answr is - A. Part of one chromosome attached to another chromosome.
Explanation:
Translocation is one of the chromosome abnormality that cause change in the number of the chromosome. In the translocation a part of the chromosome breaks off and bind or attached to the another chromosome.
The translocation cause various disorderes in individual one of them is Down syndrome which is the result of the alteration of chromosome number 21. In this translocation or specicifically the chromosome portion of chroromosme 14 breaks off and reattaches to the chromosome 21 result in one normal 14 and two normal 21 chromosme so there is trisomy occurs.
Answer:
A duplicated chromosome failed to separate (nondisjunction)
Explanation:
If nondisjunction occurs during meiosis I, homologous chromosomes fail to separate. This produces abnormal gametes that contain two members of the affected chromosome or none. This is why there is an extra chromosome in the 21 chromosomes.
In the Krebs Cycle of cellular respiration, pyruvate is used to make
A.oxygen
b. carbon dioxide
C water
D. More glucose
Answer:
b. carbon dioxide
Explanation:
This metabolic pathway is called the Krebs cycle after the scientist who first discovered it in 1937. The Krebs cycle is further broken down by pyruvic acid, obtained in the glycolysis process. The process proceeds in two stages. The first is the degree of decomposition of the bicarbonate residue.
The Krebs cycle is the main metabolic pathway for the breakdown of organic matter and the production of energy in the form of reduced coenzymes, which will then be incorporated into ATP.
All of the following are probable ways to de-escalate conflict between groups except Please select the best answer from the choices provided
a. reestablishing communication that has stopped
b. Discounting extreme opinions of uncompromising group members
c. taking time to cool down emotionally
d. reducing all communication after conflict occurs
Answer: reducing all communication after conflict occurs
Explanation:
Reducing all communication after conflict occurs, thus correct option is D.
Why communication is necessary for any conflict?Good communication in conflict situations eases tension, builds trust, strengthens relationships and makes people feel at ease, because they are mutually understood.
At the same time, it remains firm on important points Reducing all communication after the conflict is not the way to de-escalate any conflict between the group.
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List the 3 things acceleration does.
Answer:
a change in velocity, a change in direction, or a change in both velocity and direction.
The earth , the sun , and the seven other planets that are in orbit around the sun are part of the solar system. How does the size of the solar system compare with the size of the milky way galaxy ?
Answer:
Size of milky way galaxy is very large than our solar system.
Explanation:
The size of the solar system is much smaller than the size of the milky way galaxy because our solar system is a part of milky way galaxy. The radius of our solar system is 4.545 billion km while on the other hand, the radius of the milky way galaxy is 52,850 light years which is very very large than the radius of our solar system. Milky way galaxy has 100–400 billion planets while in our solar system has only eight planets.
Long chains of amino acids are called?
Proteins
Fats
Lipids
Carbohydrates
Answer:
Proteins are long chains of amino acids
Explanation:
IF ANYONE CAN PLEASE HELP ME QUICK I’D APPRECIATE IT
What would be the most likely effect of adding wolves to the park?
A. Increased balsam fir population
B. Decreased cottonwood population
C. Increased snowshoe hare population
D. Increased moose population
1. Describe all functions of osteoblast cells:
2. What is the function of the hematopoietic stem cell?
3. Describe all functions of goblet cells:
4. Where can pseudostratified columnar cells be found and what is their function?
5. You have a patient with pneumonia in the hospital, please describe tissue groups and cell types that would be most affected with this disease:
6. You have a patient with and injury/wound in the upper arm. Describe the healing process using correct terminology.
Answer:
is this health?
Explanation:
You have a plot of strawberries planted and you begin to notice some tiny aphids on the leaves of your plants. How could you rid your farm of the aphids without using chemical control methods?
Answer:
put ladybugs in the garden with the strawberries. they kill the aphids and will be full and wont destroy the plants.
Explanation:
hope this helps
btw if u have a prob with the ladybugs chickens love ladybugs :p
Which theory is supported by scientists gathering the additional evidence of seafloor spreading and magnetism?
O Continental Drift Theory
O Mid-Atlantic Ridge Theory
O Pangea Theory
Theory of Plate Tectonics
Answer:
Mid Atlantic Ridge theory
Explanation:
I learned about this a last term.
Answer:
It is Continental Drift Teory (pretty much it is too late for me to answer)
Explanation:
I found this on microsoft and on quizllet. It is acutually correct! Hope this helps to anyone that is viewing this!!
CELLULAR RESPIRATION!!!
How does the cell get the sugar and oxygen needed for cellular respiration?
A child pulls a toy across the floor. What is the equal and opposite force for the force of the child pulling forward on the toy as described by Newton's third law? Choose 1 answer: Choose 1 answer: (Choice A) A Ground's normal force pushes up on the child's feet. (Choice B) B Ground's friction pushing on the toy (Choice C) C Child's feet's friction pushing on the ground in the opposite direction (Choice D) D Toy pulls on the child in the opposite direction
Answer:
D. Toy pulls on the child in the opposite direction
Explanation:
Newton third law of motion states that for every action, there is an equal and opposite reaction. This means that whenever an object 1 exerts a force (action force) on another object 2, object 2 exerts a force (reaction force) of equal magnitude but opposite direction on object 1.
According to this question, a child pulls a toy across the floor. Based on Newton third law described above, the toy will pull the child with an opposite force that is equal in magnitude. Hence, the equal and opposite force is: Toy pulls on the child in the opposite direction.
Specialized Cells and tissues
TA
What is the function of muscle tissue?
O A. To contract to cause movement in the body
OB. To cover the body to protect other cells
C. To transport materials and defend the body
O D. To send signals to control the body
A to contract to cause movement in the body
22. Which of the following is not part of Subduction?
a. Volcanic activity
b. Strong earthquakes
c. Melting of the crust into magma
d. The spreading of plates at the subduction zone
Answer:
Where two tectonic plates converge, if one or both of the plates is oceanic lithosphere, a subduction zone will form. An oceanic plate will sink back into the mantle. Remember, oceanic plates are formed from mantle material at midocean ridges.
Explanation:
d. The spreading of plates at the subduction zone