Answer:
True
Explanation:
Yes, scientists have observed many mysteries of plants.
Other kinds of white blood cell have a different way of killing
pathogens.Explain how they do this.
Answer:
White blood cells defend against pathogens in three ways. Firstly they release anti-toxins, which neutralize the effect of toxins produced by bacteria. The second way they destroy pathogens is by engulfing/ingesting them.
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Which of the following statements about a controlled experiment is accurate? a. All the variables must be kept the same. b. Only one variable is tested at a time. c. Everything can be studied by setting up a controlled experiment. d. Controlled experiments cannot be performed on living things
Answer:
B.
Explanation:
Only one variable is altered at a time in a "controlled experiment." The rest of the variables should be kept the same or “controlled.”
11. (a) Define the following terms (i) Spermatogenesis (ii) Oogenesis
Answer:
A. answer
Spermatogenesis is a process farming of spermatoza from germ cell(spermatogonium/spermatogonial) that happened in seminiferous tubules of the testis.
B. answer
oogenesis is the formation of ovum or eggs,starts in the ovaries of the foetus before birth.
correctly identifies at least one item that produces each of the five percussive tones (resonance, hyperresonance, dullness, flatness, and tympany
medsim respiratory system
Answer:
• pulmonary resonance: lungs are 99% air
• percussion notes:
Resonance : low, hollow, lasts , long
Hyperrsensonance: higher, booming, lasts long
Flatness: or Dullness : soft short
Tympany: high, drum-like
Explanation:
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How many electrons are contained in a single covalent bond
hi <3
there would be 2 electrons. each atom shares an electron each so in a single covalent bond, there would be 2 electrons
hope this helps :)
There are two electrons in a covalent bond.
Deeper meaning:-A covalent bond can be meant of as a 'shared pair' of electrons, so there are 2 electrons in each bond. This means that a double bond will have 4 electrons in the space between the bonded nuclei, and a triple bond will have 6.
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(Answered by Benjemin)
Viruses and bacteria can infect human cells. Bacteria are living organisms, while viruses are not. How do you think the treatment for viral and bacterial illnesses differ? How do you think they affect healthy body cells? Explain your response.
Answer:
hope it helps
Explanation:
1) antibiotic drugs can kill bacteria however, they are not effective against viruses
2) some bacteria's help to digest foods and speed up enzyme reactions. Some bacteria cells destroy disease causing cells
The treatment for viral and bacterial illnesses differs primarily due to the fundamental differences in their nature and characteristics. Bacteria are living organisms that can be targeted by antibiotics, whereas antiviral medications are used to treat viral infections.
Both bacteria and viruses can affect healthy body cells, with bacteria directly invading cells and causing damage, while viruses rely on host cells for replication and can induce damage during the process.
Bacteria and viruses can both cause damage to host cells. Bacteria can directly invade and damage cells through mechanisms such as releasing toxins or inducing inflammation.
Viruses require host cells to reproduce. They invade host cells, hijack cellular machinery to replicate themselves, and subsequently cause damage to the infected cells during the process.
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What are the total number of subatomic particles found in the electron cloud of an Aluminum atom?
Answer:
13 electrons pls pls mark me branilest
100 points plus brainly!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Starch, glycogen, and cellulose are all made of chains of
what is semi conduction
Explanation:
Semi-conductive describes a component which conducts electricity less well than a good conductor but better than an insulator.
The hose should be semi-conductive, with a resistance high enough to insulate a stray current but conductive enough to get rid of static charge build-up.
Carbon black can be used to lower the resistivity of plastics, imparting antistatic, semi-conductive, or conductive properties.
Semi-conductive describes a component which conducts electricity less well than a good conductor but better than an insulator.
Which of the following is true about science and technology?
A.
Advancements in science cannot lead to advancements in technology, and technological advancements cannot lead to scientific advancements.
B.
Advancements in science can lead to advancements in technology, and technological advancements can also lead to scientific advancements.
C.
Advancements in science can lead to advancements in technology, but technological advancements cannot lead to scientific advancements.
D.
Advancements in science cannot lead to advancements in technology, but technological advancements can lead to scientific advancements.
Compare types of models. Which model of the human digestive system is most detailed?
A. Photograph of digestive system
B. Dissected pig
C. Artist drawing
D. 2D computer-generated model
The model of the Human digestive system that is most detailed is ( B ) : Dissected Pig
Pigs and Human have similar internal organs and the locations of each organ in both mammals are similar as well, therefore from the options the closest model that is most detailed as regards to the Human digestive system is a dissected pig.
A photograph of the digestive system does not provide a detailed model, also an artist drawing cannot provide as much detail as needed. A 2d computer-generated model will only present the digestive system in 2 dimensions hence it is not detailed enough as well.
Hence the most detailed model is a Dissected pig model.
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Arrange the rock layers from oldest to youngest re-examine The rock outcrops if you need to. Record the order in the student guide.
Basalt
Limestone with unknown fossil
Sandstone with trilobite
Shale with ammonite
Answer:
Youngest to Oldest
Shale with ammonite
Limestone with unknown fossil
Basalt
Sandstone with trilobite
What is a flock of ravens called ?
Answer:
an unkindness or conspiracy of Ravens
what is biomolecules ?how it works in our daily life
Answer:
all
Explanation:
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Answer:
Biomolecule, also called biological molecule, any of numerous substances that are produced by cells and living organisms.
Explanation:
The biomolecules may involve in several processes such as energy storage (carbohydrates), catalyzing the biochemical reactions (hormones), storing/transmitting the genetic codes (RNA/DNA), or altering biological and neurological activities (neurotransmitter/hormones.
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The flow of genetic information in molecular biology follows the following path, A) DNA is translated into protein B) DNA is transcribed into RNA which is translated into protein C) DNA is translated into RNA which is transcribed into protein D) RNA is transcribed into protein
Answer:
The Correct answer is DNA is transcribed into RNA which is translated into protein
Explanation:
The genetic information is unidirectional, from DNA to proteins. First, DNA is transcribed into an intermediary RNA molecule is known as transcription (TC), a further messenger RNA molecule (mRNA) is translated into a corresponding sequence of amino acids (translation). This concept of information flow is known as the central dogma of molecular biology.
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What are some ways of reducing the effects of global warming
Please select the correct answer
Answer:
2nd option is correct..What happens as a correlation approaches +1.00 or -1.00?
A. The two variables become interdependent of on each other.
B. The strength of the relationship increases.
C. The strength of the relationship decreases.
D. The strength of the relationship remains constant.
The strength of the relationship increases when correlation approaches +1.00 or -1.00.
WHAT IS CORRELATION?
Correlation coefficient, denoted by "r", is used in statistics to show the degree of relationship between two linearly related variables. The correlation coefficient (r) can either be positive or negative depending on whether the relationship is inverse or direct. The value of the correlation coefficient is used to depict the strength of the relationship. The closer the correlation is to +1 or -1, the stronger the relationship between the two variables. That is; -1 ≤ r ≤ +1Therefore, the strength of the relationship between two variables increases when correlation approaches +1.00 or -1.00.
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Explainhow carbon moves thoughout an ecosystem.
Answer:
Hi, Friend!
Carbon moves through Earth’s ecosystems in a cycle referred to as the carbon cycle. It is through carbon dioxide gas found in Earth’s atmosphere that carbon enters the living parts of an ecosystem.
Explanation:
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Also Good Morning :D
In the following scenarios, identify the independent variable, and the dependent variable.
1. Endurance in high altitude mountain climbers with and without the use of supplemental O2.
a. Independent Variable:
b. Dependent Variable:
2. Weight loss in subjects eating low carbohydrate diets.
a. Independent Variable:
b. Dependent Variable:
3. The number of hours spent studying biology each week and grades earned on biology exams.
a. Independent Variable:
b. Dependent Variable:
Suggest a control group for each of the following experiments.
4. Cancer rates in students who smoke cigarettes are closely monitored over a 5-year period.
Control Group:
5. Weightlifters are given 400 mg of creatine phosphate every day for 90 days. At the end of the 90-day period each participant is evaluated for improvements in strength.
Control Group:
The independent variable produces an effect on the dependent variable, while the control variable produce no change on the results. In the exposed situations, the independent variables are supplemental O₂, low carbohydrate diets, hours spent studying biology. The dependent variables are Endurance of climbers, Weight loss, grades earned on exams. And the control variable might be time.
--------------------------------------
During an experiment, you need to consider all the variables involved.
Independent (manipulated) variable: Refers to all the variables in an experiment that provoke a response in another variable. An independent variable is the one that changes or is controlled and modified to analyze how another variable responds to it. The researcher changes the independent variable to observe its effects on the dependent variable. Usually, the independent variable is represented by the X letter. Dependent variable: Refers to the variable, which response depends on any change in the independent variable. It represents a quantity of something which value depends on how the independent variable is modified. The change in the dependent variable might be proportional or inversely proportional to the change in the manipulated variable. It is usually identified by the letter Y. Controlled variables are kept constant in the control groups and the experimental groups. Unlike the independent variable, the controlled variables do not influence the results. These variables do not affect the response of the dependent variable.
1. Endurance in high altitude mountain climbers with and without the use of supplemental O2.
a. Independent Variable: supplemental O2
b. Dependent Variable: Endurance in mountain climbers
The endurance of climbers will depend on the use of supplemental O₂. If they use supplemental oxygen, they will have more resistance than if they do not use it. Supplemental Oxygen is influencing the climbers´ endurance.
2. Weight loss in subjects eating low carbohydrate diets.
a. Independent Variable: low carbohydrate diets
b. Dependent Variable: Weight loss
Having a low carbohydrate diet will lead the subjects to lose weight. Any change in the quantity of the carbohydrate will affect the individuals' weight.
3. The number of hours spent studying biology each week and grades earned on biology exams.
a. Independent Variable: hours spent studying biology
b. Dependent Variable: grades earned on exams
The more hours students spend studying, the higher grades they get on biology exams. The grades depend on the number of hours used to study and are proportional to this variable.
4. Cancer rates in students who smoke cigarettes are closely monitored over a 5-year period.
Control Group: Time → Five years
Time is constant in all the study groups. Independently of the number of cigarettes smoked, or the frequency in which subjects smoke, all the groups will be analyzed for 5 years, and this time-lapse is constant.
5.Weightlifters are given 400 mg of creatine phosphate every day for 90 days. At the end of the 90-day period each participant is evaluated for improvements in strength.
Control Group: Time → 90 days
Time is constant in all the study groups. Independently of the creatine phosphate mg provided to weightlifters, individuals will be analyzed for 90 days, and this time-lapse is constant.
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In order to learn more about a rare disease, a doctor uses a computer to talk to another doctor halfway around the world. This technology trend in medicine is known as
Answer:
Telemedicine
Explanation:
I could be wrong, but I do not think I am.
A person lives on the Tropic of Capricorn. What is the altitude of Polaris?
O 23 1/2"
O 90°
O 66° 33"
O 15°
O 30°
O 45°
The correct answer as to what the altitude of Polaris would be for a person that lives on the Tropic of Capricon is 23° 1/2".
Polaris is a star and the altitude of any star is its height above the horizonThe Polaris is otherwise known as the North star as an indication that it is directly located overhead the north pole. Thus, it may not be visible once one moves South of the equator. The tropic of Capricon is located approximately 23° 1/2" South of the equator. In other words, the latitude of the Tropic of cancer is approximately 23° 1/2".Hence, the altitude of the Polaris at an altitude of 23° 1/2" will also be 23° 1/2", although it will most likely remain invisible.A person that lives on the Tropic of Capricon is approximately on latitude 23° 1/2". Since the altitude of a star is its height above the horizon, the altitude of Polaris from the Tropic of Capricon would, therefore, be 23° 1/2"
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Meaning of chromatos
A. color writing
B. Color forming
C. Color spreading
D. None of these
chromato meaning
Chromato- is a combining form used like a prefix meaning “color.” It is used in many scientific and medical terms. In cell biology, chromato- specifically refers to chromatin, “the readily stainable substance of a cell nucleus, consisting of DNA, RNA, and various proteins, that forms chromosomes during cell division.”
Which of the following mechanisms of change in genefrequencies is responsible for the antibiotic resistance of E. coli in this experiment?
A. founder effect
B. natural selection
C. population bottleneck
D. genetic drift
Natural selection is the mechanism responsible for the antibiotic resistance of E. coli.
Natural selection is a mechanism that favors the adaptation of organisms to survive in their environment, thrive and reproduce.
In the context of antibiotic resistance, antimicrobial substances exert selective pressure on microbes that encourages the evolution of resistance.
Those capable of resisting the effects of antibiotics survive and reproduce, while the vulnerable either die or have their growth inhibited.
The excessive and inappropriate use of antibiotics favors selection for antibiotic resistance in bacteria.
E. coli is characterized by having Gram negative bacilli, it represents the greatest risks of zoonotic transfer of resistance.
In general, and when a treatment is short, there is an elimination of sensitive saprophytic strains of E. Coli and an enormous predominance of resistant strains.
Bacteria also acquire antimicrobial resistance through vertical or horizontal transfer of genetic information.
Therefore, we can conclude that resistance to antibiotics in E. coli is due to the process of natural selection since it evolves to resist the action of an antimicrobial agent.
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Which phrase describes air pressure?
decreases with denser air
decreases as altitude decreases
equals mass divided by volume
decreases as a result of fewer air particles pushing down
The phrase which best describes air pressure is: decreases as a result of fewer air particles pushing down.
What is pressure?Pressure can be defined as a measure of the force exerted per unit area of an object or physical body. Thus, it is usually measured in Newton per meter square and calculated by using this formula:
[tex]P = \frac{F}{A}[/tex]
Where:
P is the pressure.F is the force.A is the area.The types of pressure.In Science, there are different types of pressure and these include the following:
Hydrostatic pressureOsmotic pressure Filtration pressureAtmospheric (air) pressureIn conclusion, air pressure is also referred to as atmospheric pressure and it generally decreases due to fewer air particles pushing down on the surface of planet Earth.
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What is the net force?
What is the direction right, left, up, down or no motion
Explain the difference between asexual and sexual reproduction
Answer:
Asexual reproduction is when a living thing reproduces with only a single parent. Sexual reproduction involves two parents and chromosome change.
Explanation:
Ex of Asexual reproduction: Ferns, bacteria, animals, etc.
Ex of Sexual reproduction: Animals, some plants, etc.
Most living organisms are composed of whitch group of elements
Answer: In all living systems we can always find 4 basic elements: carbon, oxygen, nitrogen and hydrogen. Carbon is the basic building unit contained in living matter. The percentage of carbon in the mass of living matter is 19.4 %. Oxygen and hydrogen are present in almost all organic compounds which create living organisms.
Explanation:
Help me pleaseeee I need to finish this:(
Answer:
p
Explanation:
p=nucleic acido=carbohydraten=proteinss=lipidst=all have in commonr= proteinWhat describes how a large host cell and ingested bacteria could easily become dependent On one another for survival resulting in a permanent relationship
Answer:
The endosymbiotic theory describes how a large host cell and ingested bacteria could easily become dependent on one another for survival
Explanation:
