Answer:
c) Hormones are slower communication used by plants and animals; neurons are fast communication used by animals only
Explanation:
evolution of octopus
A car with a mass of 2000 kg and a boat with a mass of 500 kg are both moving at the same speed.
What is the ratio of the kinetic energy of the car to the kinetic energy of the boat?
A. 2:1
B. 4:1
C. 9:1
D. 16:1
Answer:
B
Explanation:
Kinetic energy is possesed by a body by virtue of its motion. The ratio of the kinetic energy of the car to the boat is 4:1.
What is Kinetic energy?The term kinetic energy refers to the energy that is possesed by a body by virtue of its motion.
Now;
Kinetic energy of the car = 0.5 * 2000 * v^2
Kinetic energy of the boat = 0.5 * 500 * v^2
The ratio of the kinetic energy of the car to that of te boat is; 0.5 * 2000 * v^2/0.5 * 500 * v^2 = 4:1
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What component of blood is important in the treatment of the virus
What is the function of the surface protein on the influenza virus?
Answer:
A virus surface proteins are organized to help penetrate host mucus.
Explanation:
The surface of viruses includes many copies of one type of protein that binds, or adsorbs, specifically to multiple copies of a receptor protein on a host cell.
The surface protein of influenza virus, hemagglutinin, helps the virus attach and enter host cells.
What are surface proteins?The surface protein on the influenza virus is called hemagglutinin (HA) and it plays a critical role in the virus' ability to infect host cells. HA is a glycoprotein that protrudes from the surface of the virus and binds to specific receptors on the surface of host cells, particularly in the respiratory tract.
This allows the virus to enter the host cell and hijack its machinery to replicate and produce more virus particles. The HA protein also enables the virus to evade the immune system by constantly changing its structure through a process called antigenic drift, which prevents recognition by the host's antibodies.
The importance of the HA protein makes it a prime target for the development of vaccines and antiviral drugs against influenza.
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CONSIDERAS QUE ES CORRECTO DECIR QUE LOS ANTIBIOTICOS SON MALOS PARA LAS BACTERIAS? Argumenta tu respuesta
Answer:
Sí, ya que su función es matarlas o impedir que aumente el número de estas.
Explanation:
Los antibióticos actúan sobre las bacterias ya sea matandolas o evitando que la población de un determinado tipo de bacterias se reproduzca haciendo que los mecanismos de defensas presentes en nuestro cuerpo puedan actuar sobre las bacterias ya existentes.
Los antibióticos pueden ser específicos para cierto tipo de bacterias o actuar de forma general afectando a varios tipos de bacterias presentes en nuestro organismo. Si se atacan bacterias que están normalmente en nuestro cuerpo por acción indiscriminada del antibiótico, nuestro organismo sufre un desequilibrio ya que las bacterias que tendrían que estar presentes para procesar ciertos elementos o realizar otras funciones no están.
A mutation in the code for a trait may not always change the expression of that trait. What advantage does this provide cells?
1)Ribosomes can produce proteins more quickly.
2)Cells only need to make a limited number of proteins.
3)Proteins can switch tasks without a change in the DNA sequence.
4)Some changes in the DNA sequence will produce the same proteins.
Answer:
ribosomes can produce proteins more quickly
What is the name for winds that usually blow in the same direction?
Dry winds
Prevailing winds
Smart winds
Strong winds
Answer: (B) Prevailing winds
Explanation: the name for winds that usually blow in the same direction is Prevailing winds
The name for winds that usually blow in the same direction is "Prevailing winds". Therefore, option (B) is correct.
What is prevailing winds?Prevailing winds are the dominant winds that blow consistently over a region, resulting from the combined effects of global atmospheric circulation patterns, the Coriolis effect, and local geography. These winds typically blow from the same direction and have a significant impact on regional climate, as they can bring in moisture, temperature changes, and other weather conditions.
Prevailing winds can be important for agriculture, transportation, and other human activities that are affected by weather patterns. Therefore, option B, prevailing winds, is the correct answer
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Which of the following is true about geographic barriers?
1Geographic barriers only involve mountains
2Geographic barriers can not separate organisms
3Geographic barriers separate all species
4Geographic barriers separate some organisms and not others
Answer:
I believe A makes the most sense
Explanation:
Sedimentary rocks form from rock and mineral fragments, and metamorphic rocks form from existing rock.
True
Or False
Answer:
True
Explanation:
Sedimentary - A rock formed as a result of the weathering process, either by compaction and cementation of rock mineral fragments, or the precipitation of dissolved minerals.
Metamorphic - These rocks form as existing rocks are subjected to intense heat and/or pressure, usually over long periods of time.
HELP!!
What evidence do fossils provide geologists about the history of the Earth?
A. Living things have remained the same over time.
B. Environmental conditions have changed over time.
C. The amount of water on Earth has changed over time.
D. Environmental conditions have remained the same over time.
what is a condensed structure that contains the DNA that are visible during mitosis?
Which best describes sponges?
A. plants
B. simple invertebrates
C. fungi
D. fish
Answer:
answer is B I guess..........
Two black guinea pigs were crossed and they produced a litter of 4 black and 3 white guinea pigs. Which best explains this occurrence?
White fur is dominant to black fur.
White fur was the result of a mutation.
Both parents were heterozygous for black fur.
Answer:
Both parents were heterozygous for black fur.
Which of the following reduces the consumption of raw materials?
A. the use of energy efficient appliances
B. the use of smaller automobiles
C. recycling plastics, glass, aluminum, and paper
D. all of these
Answer:
D. All of the above
Explanation:
Recycle, reduce, reuse (remember that when thinking of RAW materials)
3 benefits for animals that goes through animal testing
Answer: one example of the benefits of biomedical research for animals can be found in the propagation of endangered species
Explanation: The ability to transfer embryos, eliminate parasitism, treat illnesses, and use anesthetic advances has improved the health and survival of many species
what is the molar mass of Br2 in grams
Answer:
159.808 g/mol
Explanation:
Br itself is 79.904 g/mol. So multiply it by two.
The molar mass of [tex]Br_{2}[/tex] is approximately 159.808 grams per mole.
When calculating the molar mass of [tex]Br_{2}[/tex], also known as diatomic bromine, the atomic masses of the two bromine atoms (Br) found in the molecule are added together.
Bromine (Br) has a mass of roughly 79.904 grammes per mole according to its atomic weight.
Because of this, the molar mass of [tex]Br_{2}[/tex] is calculated as follows: 2 times 79.904 g/mol = 159.808 g/mol
As a result, the amount of grammes that constitute one mole of [tex]Br_{2}[/tex] is roughly 159.808.
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Match the feature with its description.
HELP!! ASAP
Answer:
In order:
Stalactities
Stalagmites
Swallowhole
Sinkhole
The correct match of the features are:
Stalactites: Grow toward the cave floor.
Stalagmites: Grow toward the cave ceiling.
Swallow hole: A cave that has collapsed because of gravity.
Sinkhole: Where a stream disappears into the ground.
What are Stalactites?Mineral deposits known as stalagmites and stalactites are frequently seen in caves. The pointy, downward-pointing minerals that fall from the caves' roofs give rise to the stalactites.
On the other hand, stalagmites are created when minerals that fall from the roof are deposited on the ground afterward.
Therefore, the correct options are:
Stalactites: Grow toward the cave floor.Stalagmites: Grow toward the cave ceiling.Swallow hole: A cave that has collapsed because of gravity.Sinkhole: Where a stream disappears into the ground.To learn more about Stalactites, refer to the link:
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How does matter change from one state to another?
Matter changes state when energy is added or taken away. When matter is heated enough, the molecules move faster and with greater energy. ... If enough heat is added, a solid can become liquid and a liquid can become gas.
tRNA molecules are recyclable
1.True
2.False
what is the phenomena of cells?
What happens to water when light is absorbed?
A. it bonds with carbon dioxide and forms carbonic acid
B. it bonds with oxygen and form H2O2
C. it splits and oxygen is given off, while H+ builds up in the thylakoid space
D. it heats up and therefore provides the activation energy needed to start photosynthesis
2. How are the differences in animal cells related to their functions?
3. How are cells organized within an animal?
I will give extra points!!
DNA is a nucleic acid polymer. What are the monomers that build this polymer?
which is most likely a covalent compound
a.) NaCl
b.) KCl
c.) CuF2
d.) CF4
Answer:
CF4
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Which of the following is NOT
important in an experiment?
A. working in a controlled environment
B. recording all data and keeping it consistent
C. making sure that only one variable is being changed
D. performing the experiment in the same location
that the observations were done in
Answer:
D
Explanation:
It doesn’t matter where u take ur observations
The statement which is not important in an experiment is to perform the experiment in the same location where the observations were done in. Thus, the correct option is D.
What is an Experiment?An experiment may be defined as a scientific procedure that should be followed in order to estimate, discover, and observe a given testable hypothesis to demonstrate a valid and accurate conclusion.
The Scientific experiments should also be performed under a controlled environment where all data must be recorded and keep them consistently.
In demonstrating the valid outcome of any scientific experiment, it is required to alter only one source of variable and estimate the value of others on the basis of it.
Therefore, the statement which is not important in an experiment is to perform the experiment in the same location where the observations were done in. Thus, the correct option is D.
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Evolution is a process of change over time. A leading theory explaining why things evolve is: *
A. Inbreeding
B. Natural Selection
C. Kin Selection
D. Natural Ingredients
Edwin Chargaff was a 20th century biochemist who investigated the structure of DNA. Chargaff looked at the ratios of the four bases in the DNA. State the type of bond that joins the bases together in a DNA molecule
Answer:
Hydrogen Bond
Explanation:
The hydrogen bond joins bases together in a DNA molecules. Which is the bond between two strands on a DNA molecule. Although the hydrogen bond is weak, collectively in the DNA molecule, it is a strong bond which binds the molecule together.
why is blood bright red
Answer:
Human blood is red because hemoglobin, which is carried in the blood and acts as an oxygen transport agent, is iron-rich and red in colour.
Which method is the typical first step when scientists communicate their scientific results?
Here some yummy anime wafius if you're hungry
Answer:
animes b! tches
Explanation:
whats yoir fav anime
Answer:
No the reason foe this is because I dont like people
Explanation:
hi