Answer:
Muscular walls, called septa or septum, divide the heart into two sides and keep the two kinds of blood from mixing. Heart valves There are four valves within the heart. Each valve has flaps that prevent blood from flowing in the wrong direction — opening to allow forward flow of blood and closing to prevent backward flow.
Explanation:
Which of these best explains why transfer RNA is often considered a "bridge" molecule?
A.
It "connects" the strands of RNA to form a double helix.
B.
It "connects" all of the ribosomal RNA bases together.
C.
It "connects" ribosomes with the correct amino acid.
D.
It "connects" RNA to DNA
Answer: I think it's D.
Hope this helps!
2)
The moon phase shown in the diagram is a
A)
waxing crescent
B)
waning gibbous
C)waning crescent
D)
waning gibbous
Answer:
is c
Explanation:
i took the thing
The panting responses observed in overheated birds and mammals dissipate excess heat by ________.
Answer:
Evaporation
Explanation:
The panting responses observed in overheated birds and mammals dissipate excess heat by evaporation
The term used for all floating and drifting organisms in the sea is:
Answer:
The answer is Plankton
Explanation:
A collection of tiny organisms living beneath the surface of lakes, rivers, ponds, and oceans across the planet are called plankton.The term Plankton is used for floating and drifting organisms in the sea.
What are plankton?Planktons are organisms found in water that cannot float against the water current.
The word plankton is derived from Greek which means to drift and float.
Thus, the term used for all floating and drifting organisms in the sea is plankton.
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What are Heterotrophs known as ?
Answer:
An organism that doesnt not produce its own food
Explanation:
Heterotrophs are consumers who eat other organisms for food, while autotrophs or producers make food by process of photosynthesis.
Answer:
A heterotroph is an organism that eats other plants or animals for energy and nutrients. The term stems from the Greek words hetero for “other” and trophe for “nourishment.”
Organisms are characterized into two broad categories based upon how they obtain their energy and nutrients: autotrophs and heterotrophs.
Heterotrophs are known as consumers because they consume producers or other consumers. Dogs, birds, fish, and humans are all examples of heterotrophs.
Heterotrophs occupy the second and third levels in a food chain, a sequence of organisms that provide energy and nutrients for other organisms. Each food chain consists of three trophic levels, which describe an organism’s role in an ecosystem. Occupying the first trophic level are autotrophs, such as plants and algae. Herbivores—organisms that eat plants—occupy the second level. Carnivores (organisms that eat meat) and omnivores (organisms that eat plants and meat) occupy the third level. Both primary (herbivores) and secondary (carnivores and omnivores) consumers are heterotrophs, while primary producers are autotrophs.
A third type of heterotrophic consumer is a detritivore. These organisms obtain food by feeding on the remains of plants and animals as well as fecal matter. Detritivores play an important role in maintaining a healthy ecosystem by recycling waste. Examples of detritivores include fungi, worms, and insects.
We have to finish dividing the cytoplasm and then back to work. Can’t wait to get back to normal
The cell cycle is a process characterized by finishing when dividing the cytoplasm and then the daughter cells back to work.
What is the cell cycle?The cell cycle is a series of cellular events that undergo a cell from its formation to its division.
The cell cycle can be divided into an interphase and a mitotic (M) phase, which ends with a process called cytokinesis.
The cytokinesis refers to the division of the cytoplasm, which is required to form two daughter cells.
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based on the text how would you define a dominant gene what about a recessive gene
Dominant refers to the relationship between two versions of a gene. Individuals receive two versions of each gene, known as alleles, from each parent. If the alleles of a gene are different, one allele will be expressed; it is the dominant gene. The effect of the other allele, called recessive, is masked.
what does erosion do?
A. It changes rock chemically
B.it changes rock particles into rock
C.it breaks rock down physically
D.it moves pieces of rock Please answer fast its due today
the answer to this problem is c
Which of the following (i-iii) will a person suffer from if he/she is travelling in a train which is overcrowded?
i.Heart attack
ii.Tuberculosis
iii.Typhoid
b. Justify your answer and also mention any two symptoms of the same.
Answer:
ii
Explanation:
tuberculosis is an airborne disease if one is affected he or she can spread the disease especially in closed crowded areas.
symptoms are continuous coughing over a week,loss of weight
4. The main elements in Earth's crust are oxygen and
(5 Points)
O A. iron
O B. copper
O C. silicon
O D. nickel
Answer: C: Silicon
Explanation: Makes up 27.7% of Earths crust. Iron takes up 8.1% so I would say the answer is silicon.
Human red blood cells are enucleated (i.e., they do not have nuclei). Is it possible to isolate DNA from red blood cells
Answer:
No, the genomic DNA is found only in nucleated cells.
Explanation:
hope it helps<3
What does it mean to say that an organism is well adapted to its environment?.
How does the cell membrane aid the cell in maintaining homeostasis?
1. The cell membrane uses energy to remove waste products from the cell through sac-like packages.
2The cell membrane controls all cellular activities in response to changes in the external environment.
3The cell membrane assists with maintaining the correct temperature by absorbing energy.
4The cell membrane extracts energy from food when the cell is low on energy.
This plant cell was changed because...
(A) equal amounts of water moved across the cell wall
(B) the concentration of water is greater inside the cell than outside the cell
(C) more water left the cell than entered the cell
(D) the cytoplasm moves water into the nucleus
Answer:
The answer is D good luck
The broadest taxonomic group for classifying living organisms is the.
Answer: kingdom
Explanation: The broadest category of the organism in biological taxonomy is a kingdom. Each unit or category of classification is termed as a taxon. It represents a rank.
Place the organisms in order from simplest to most complex.
1.Animals
2.Eubacteria
3.Protists
4.Fungi
5.Plants
6.Archaebacteria
Answer:
The six kingdoms are Eubacteria, Archae, Protista, Fungi, Plantae, and Animalia. Until the 20th century, most biologists considered all living things to be classifiable as either a plant or an animal.
Explanation:
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Will earth run out of water?
While our globe may never run out of water as a whole, it's crucial to realize that pure freshwater isn't always available where and when humans require it. In fact, only six countries contain half of the world's freshwater. Over a billion people do not have access to adequate safe, clean water. Water scarcity will afflict the entire planet by 2040 unless water use is significantly decreased. "If we keep doing what we're doing now, there will be no water by 2040."
can someone please help me with these two?
Answer:
Question 1: (A) Producers
Question 2: (C) Xylem
Explanation:
I am not sure how to explain these because its just their definitions and their role. Sorry!
explain how the scientific theory of evolution is supported by molecular biology
The theory of evolution is supported by molecular biology because the linear order of nucleotides and sequence homo-logy may be useful to show a common origin.
What is sequence homo-logy?The expression sequence homo-logy makes reference to the similarity level between two or more sequences (e.g., DNA sequences) in organisms.
The sequence homo-logy can be very useful to show a common evolutionary origin in a group of organisms.
The sequence homo-logy refers to the linear sequence of nucleotide bases in the DNA molecule.
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pls help and thank you
Answer:
image is dim due to it being in the blind spot
true or false the lab partner working on the computer should put the bacterial filter and mouthpiece onto the respiratory transducer and then hand it to the subject
Answer:
No!
Explanation:
Safety precautions must be taken with this procedure. Such as, protective gear, bacteria should not be mixed with other substances!
If your heart beats 70 times per minute, everyday of the year, how many times does it beat in a year?
Answer:
36,792,000
Explanation:
Using some math, if you say that it beats at 70 pm, then you should look for how much it beats in an hour, which is 4200 (60x70). Then you have to take that number and multiply by 24, which is 100,800. In a day it beats about that amount. Then you take that number and multiply by 365, which is 36,792,000.
In which system of the human body are the red blood cells and white blood cell found?
Answer:
In the circulatory system
Explanation:
The circulatory system of the body is where all blood cells are found.
Fill in the concept map with details about linnaean taxonomy.
The classification of Linnaean taxonomy include kingdom, phylum, class, order, family, genus, and species.
What is taxonomy?It should be noted that taxonomy simply means the classification of items based on their structures and behavior.
The linnaean taxonomy is the classification that was set up by Carl Linnaeus. In this case, the classification of Linnaean taxonomy include kingdom, phylum, class, order, family, genus, and species.
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What are the outcomes for hares being introduced into the grassland ecosystem
Answer: The correct answers should be the hares will multiply indiscriminately and destroy the ecosystem and the native herbivores will experience increased competition for resources.
Since the hares wouldn't have predators, and they are famous for rapid breeding, they would overpopulate the ecosystem. On the other hand, the native animals would have to compete with this population of hares for food and would have less for for themselves.
Explanation:
What is the Liquid part of blood called?
Answer:
The liquid portion of the blood is called plasma.
Explanation:
hope this helps.
how does the changing nature of water rights relate to the investigation phenomenon
Answer:
Natural disasters are caused due to different reasons like soil erosion, seismic activity, tectonic movements, air pressure, and ocean currents etc. Natural activities taking place in the earth's crust, as well as surface, are the main reasons for these disasters.
We are running out of water due to change in climate conditions like floods, droughts, sea level rising.
Reasons of water running out:Drought- The world’s changing climate has been linked to an increased incidence of droughts that results in increase demand of water supply.Sea level rising- Rising sea level increases the salinity of both surface water and ground water through salt water intrusion.Increasing population-About 70% of the world’s freshwater consumption is for agriculture and food demand is rising. The global population is increasing, which will increase global food demand and this will increase the water required for food production.you can learn more about this water changes here:
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A student learning about heat transfer makes the claim shown:
"Some metals change temperature more rapidly than other metals."
The student proposes to test the claim in the laboratory by using metal rods made of iron (Fe), copper (Cu), and Aluminum (Al). In addition to the metal rods, which pieces of equipment would be useful for investigating the claim?
Group of answer choices
prism, heat lamp, screen, meterstick
beaker, digital scale, stopwatch, clamps
litmus paper, beaker, pan balance, battery
hot water, pan to hold water, stopwatch, thermometer
Hot water, pan to hold water, stopwatch and thermometer are the pieces of equipment which would be useful for investigating the claim.
What is Temperature?
This is the degree of hotness or coldness of a substance and it is measured with the use of the thermometer.
Since temperature is involved, the thermometer and heat source are important thereby making option D the most appropriate choice.
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Option D
Well the raising speed of temparature of a metal is dependent upon its specific heat capacity .
If specific heat capacity is more then the water will boil faster .
From stopwatch we can determine how fast the water boils in identical pans .
Which will help in determining specific heat capacity
How are antibiotics different from "classic drugs"?
Answer:
Answer at explanation part.
Explanation:
An antibiotic is a type of antimicrobial substance active against bacteria.
Classic drugs can be harmful or addicting. So antibiotics are more useful than other drugs.
Hope this helped!!!
A type of ribonucleic acid that Incodes genetic information
Answer:
Explanation:
Cellular organisms use messenger RNA (mRNA) to convey genetic information (using the nitrogenous bases of guanine, uracil, adenine, and cytosine, denoted by the letters G, U, A, and C) that directs synthesis of specific proteins. Many viruses encode their genetic information using an RNA genome.