Answer: traditional economy, market economy, mixed economy, command economy
Explanation: 1. Canada or Alaska 2. There are no pure market economies 3. The USA 4. North Korea
Which of the following affects the rate of the chemical reaction caused by an enzyme?
A. temperature
B. pH
C. concentration of ions
D. All of these choices are correct.
Answer:
A.Explanation:
HOPE IT HELPS YOU TO YOUR QUESTIONWhich describes the relationship between the frequency wave length and speed of a wave is a wave travels through different media
No links
Answer:
a
Explanation:
as speed changes wavelength changes but frequency remain constant
After first exposure to an antigen, about how long does it take for antibodies to reach a detectable level?
2. What could explain the significant increase in antibodies to non-Lyme disease antigens (blue line)?
3. Lyme disease patients who are treated with antibiotics quickly usually do much better than those who are treated later. Why do you think this is the case?
4. Why doesn’t the Antibodies in Lyme Disease Antigens (orange line) decrease after the first immune response, compared to non-Lyme Disease Antigens (blue line)?
5. Professor Dr. Utpal Pal studied the Borrelia burgdorferi bacterium at the University of Maryland. Dr. Pal found that Lyme disease is caused by your immune system. When the body is infected with Lyme disease, it overreacts causing inflammation in the joints. Although antibiotic resistance has not been observed for B. burgdorferi, create an argument defending the control of antibiotic use to the public. Analyze the data in the graph below by answering the following questions. Be sure to use complete sentences.
After first exposure to an antigen, it can take about three weeks for antibodies to reach a detectable level. The body will react to disease by creating antibodies and testing their effectiveness against the unknown antigen.
Antibodies are the body's way of fighting off foreign threats. Also known as immunoglobulin, they detect and attack pathogenic bacteria and viruses. These antibodies detect a protein that is unique to the surface of the pathogen called the antigen.
At times, we can see an increase in antibodies for one disease, for example, Lyme disease, in the presence of non-Lyme disease antigens. This is often due to antigenic variation, which is a method used by pathogens to mask their respective antigens. There are also general use antibodies that will increase in reaction to any pathogen.
As with any illness, a patient who receives treatment sooner will fare better than those whose treatment is delayed. This is due to the fact that earlier treatment with antibiotics will allow the body to fight off the infection before the bacteria can reproduce further.
After the first immune response, antigen-specific antibodies will remain for some time to provide the body with "immunity" to the pathogen, while general-purpose antibodies will return to a base value.
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Why do you suppose plants and forests appeared in large numbers before large animals did? Several of the choices may be correct. Select the options you expect to be the strongest contributing factors.
Choose one or more:
A. Plants had to change less to survive on land.
B. Animals need food, and there was none on land before plants.
C. The increased oxygen levels produced by land plants accelerated animal evolution.
D. The order was pure chance and could have gone either way.
E. Animals are more susceptible to radiation and needed more ozone in order to survive out of the water.
F. It was too cold for animals at first.
G. There was not enough oxygen for lungs to be effective before plants colonized land.
H. Plants were driven to land by scarce resources in the oceans, such as light and minerals.
Answer:
It Might Be G im not to sure, sorry if im wrong
This center part is not present in everyone's hair or may be broken into segments.
a
Medulla
b
Cortex
c
Cuticle
d
Keratin
Answer:
C. Cuticle
Explanation:
Cuticle is the correct answer for this question
the brain and spinal cord are components of the ______ nervous system, while the nerves and ganglia are components of the ______ nervous system.
The brain and spinal cord are part of the central nervous system, while the nerves and ganglia are part of the peripheral nervous system.
What is the nervous system?The nervous system is a set of structures that has the function of :
Maintaining homeostasis inside the body.Regulating mental activity.Reacting to the environment.What are the parts of this system?This system is mainly divided in:
Central: This includes the brain and spinal cord; these organs are considered part of the central system because they are located in the center of the body and they receive information from all the nervous structures in the body.Peripheral: This includes structures such as nerves and ganglia. The peripheral system differs from the central system because these structures can be found in organs, limbs, among others or the "sides" of the body.Learn more about nervous system in: https://brainly.com/question/13487019
which high grade, foliated metamorphic rock has visible crystals?
Answer:
Gneiss
Explanation:
Gneiss forms at the highest pressures and temperatures and has crystals large enough to see with the unaided eye. Gneiss features minerals that have separated into bands of different colors. The bands of colors are what define foliation within gneiss.
Hope this helps! : )
Gneiss crystals are large enough to be seen without magnification. Gneiss has color-banded minerals. Color bands define gneiss foliation.
What is Gneiss?The metamorphic rock known as gneiss is quite common and can be found all over the world. It is produced when procedures of high temperature and high pressure metamorphism are applied to formations that are made up of rocks that are either igneous or sedimentary in nature.
Gneiss is formed at temperatures and pressures that are higher than those required to make schist. Gneiss almost always has a banded texture that is defined by alternating darker and lighter colored bands and does not have a clear cleavage. Gneiss may also lack a distinct cleavage.
Gneisses are frequently found in the crust of continental shields that formed in the distant past. Gneisses like the Acasta Gneiss are among the oldest rocks on Earth and are classified as Proterozoic.
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#SPJ5
How is the electromagnetic spectrum organized from right to left?
Answer:
Electromagnetic waves exist with an enormous range of frequencies. This continuous range of frequencies is known as the electromagnetic spectrum.
Explanation:
The longer wavelength, lower frequency regions are located on the far left of the spectrum and the shorter wavelength, higher frequency regions are on the far right.
what is proteins basic formula? like with the numbers and stuff
the cytoplasm of a skeletal muscle cell has a specific name and is known as
Answer:
Explanation:
A skeletal muscle cell is surrounded by a plasma membrane called the sarcolemma with a cytoplasm called the sarcoplasm. A muscle fiber is composed of many fibrils, packaged into orderly units.
which of the following is not an abiotic factor in the prairie ecosystem a water b sunlight c grass d soil
Answer:
Grass
Explanation:
Biotic means living. There are some obvious abiotic factors here. The only gray area is what "soil" encompasses
grass-Biotic means living, all of the other choices are not living, and would therefore be abiotic factors
This is because it is a living thing (performs photosynthesis and cellular respiration).
Biotic means living, all of the other choices are not living, and would therefore be abiotic factors
colorless, odorless, tasteless, and transparent
All of these are what kind of properties of water?
Chemical or physical?
Answer:
Physical!
Explanation:
Theres your answer, Physical
Answer:
I believe these are the physical properties of water
Explanation:
1. The cells in a multicellular organism have specific jobs. This is called cell _____.
1. The cells in a multicellular organism have specific jobs. This is called cell organelle.
In a multicellular organism, the cells have specific jobs. This is called cell Division of Labor.
Division of Labor:
Different body functions are done by different type of cell.
Multicellular organism required different body function to live such as digestion and movement. Movement is accomplished by muscle cells.In a multicellular organism, the cells have specific jobs. This is called cell Division of Labor.
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please help me with this :((
Answer:
periodic table of elements luv
Explanation:
Answer:
Periodic table of elements
Explanation:
The mediastinum does NOT contain which of the following?
Answer:
lungs
Explanation:
20 points help A number of similar families make up a(n) _____.
A order
B class
C genus
D specie
Answer:
Genus Species
Explanation:
Which TWO processes involve the flow of solar energy through the earth system?
Possible answers;
The Cooling of Earths surface
The evaporation of water
The growth of green plants
The heating of Earths core
What is the name of the first and second tubule in the nephron?
Answer:
proximal tubule
Explanation:
Pct and dct
proximal convoluted tubule(Pct)
distal convoluted tubule (DCT)
How does breathing take place in primitive animals ?
Through Plasma Membrane
at which point does chromosome replication begin? explain your answer
Answer:
Before a cell can divide, it must accurately replicate all of its chromosomes, including the DNA and its associated histone and non-histone proteins. This process begins at numerous origins of replication during the S phase of the cell cycle in each of a cell’s chromosomes simultaneously.
Explanation:
Which of the following statements is not a characteristic of the prokaryotes.
Prokaryotes don't have a nucleus.
Prokaryotes have a cell wall.
All of the chemical processes take place in membrane bound organelles in the cytoplasm.
Answer:
All the chemical processes take place in membrane bound organelles in the cytoplasm.
Explanation:
Use the process of elimination:
One of the main things that make a prokaryote is not having a nucleus, so that can be eliminated.
Looking at the structure of bacteria, they can have a cell wall, so this is eliminated.
Therefore, “all the chemical processes take place in membrane bound organelles in the cytoplasm” is incorrect.
Also, prokaryotes DO NOT have membrane bound organelles like mitochondria, chloroplasts, or a nucleus, so this statement would also be incorrect because of this.
What is Photosynthesis?
Answer:
the process where plants use sunlight to synthesize foods from carbon dioxide and water to get their energy.
In the process of in vitro fertilization, a sterile culture
dish is substituted for what part of the human
reproductive tract?
A) ovary
B) oviduct
C) testis
D) follicle
Answer:
b the oviduct
Explanation:
because eggs stay there until they are fertilized by the sperm
LAB Questions for Scientific Method Table 1 Circumference Volume Trial #1 65.4 cm Trial #2 65.3 cm Trial #3 65.5 cm Average
Explanation:
hmmm all of u stay safe
4301154259
Pas 1234
Of the following, what is the most important for ATP production?
A) amount of sunlight
B) carbon dioxide
C) concentration water concentration
D) glucose concentration
E) oxygen concentration
Answer:
B. glucose concentration.
Explanation:
ln general, the main energy source for cellular metabolism is glucose.
Ở một loài thực vật: A- thân cao trội hoàn toàn so với a - thân thấp; B - quả đỏ trội hoàn toàn so với b - quả trắng.
hãy viết sơ đồ lai xác định tỉ lệ kiểu gen, kiểu hình ở các phép lai sau:
P: AaBb x aabb
Mọi người giúp em với
Answer:
Có 4 kiểu tổ hợp giao tử có thể có của bố mẹ AaBb.
Một nửa số giao tử có alen trội A và alen trội B; một nửa số giao tử còn lại mang alen lặn a và a lặn b.
Cả bố và mẹ đều tạo ra 25% mỗi loại AB, Ab, aB và ab.
Explanation:
What is bicarbonate?
Answer:
an ION
Explanation:
Answer:
An ion
Explanation:
Formula for bicarbonate is HCO3- thus it is an anion/ negative ion.
10. What 5 traits do the bird and its closest relative share?
Answer:
EGGS WITH SHELL
AMNIOTIC EGG
FOUR LIMBS
BONY SKELETON
VERTEBRAE
Explanation:
The five traits that the birds and their close relatives share are given below:
Amniotic eggVertebraeLimb development (four)Bony skeleton and feather arrangements.Egg with envelope (shell). What do you mean by traits?Traits may be defined as a state of a character, which is a distinct variation of a phenotypic characteristic of an organism.
Every organism shows some common as well as distinct traits as compared to its close relatives. This represents the evolutionary analysis of organisms in a phylogenetic tree.
Therefore, above are the five traits that the birds and their close relatives share.
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1. When “cleaning” a cadaver, what is removed to better see defined muscles?
When cleaning a cadaver, a professional will remove the fascia in order to better see defined muscles.
The fascia is a thin layer of connective tissue that wraps muscles. It is membraneous and extends throughout the entire body. Among the many functions of the fascia are:
Protectionisolation CompartmentalizationOf its functions, the last it's perhaps the most relevant to this question. It divided the muscles into groups. This is one of the main reasons that in order to see and properly study the muscles of a cadaver, the professional must remove the fascia.
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Answer:
deep fascia
Explanation:
which primate gestures or vocalizations can be viewed as a form of culture?
Answer:
Language, hand shakes, pointing/ opening palm to guide the eyes to something
Explanation:
I would need more details before I can make one clear answer, hope this helped!