Answer:
During inhalation, the diaphragm contracts and pulls downwards, the ribcage expands, allowing oxygen to be sucked in through negative pressure, which causes the lungs to inflate.
During exhalation, the diaphragm and ribcage relax, returning to their normal positions, allowing the oxygen out of the body, thus deflating the lungs.
What type of solution causes a cell to shrink in size?
O Isotonic
O Homeotonic
O Hypertonic
O Hypotonic
help plz and thank you
Answer:
A
Explanation:
A) all cells contain DNA, and DNA is all composed of adenine, thymine, guanine, and cytosine.
B) not all cells have a nucleus. For example, prokaryotes have no nucleus
C)Not all cells have a cell wall.(Animal cells don't)
D) not all cells have mitochondria (Prokaryotes don't)
Answer:
I think it is D
Explanation:
Sorry If I'm wrong
importance of blood circulation
Answer:
Proper circulation is key for maintaining optimal health. It ensures that blood and oxygen continuously flow throughout the body, allowing every organ to function properly. It helps to heal wounds faster, it keeps your brain sharp, it keeps your heart healthy, and it even gives your complexion a natural flush.
Explanation:
would you mind to brainliest my answer?
BRAINLIEST
the diagram shows two cells found in human blood.
a. the actual diagram of
red blood cell is 0.007mm ( 7 um) in diameter.
Calculate the magnification of the diagram. show your working.
side note: I measured it in a ruler and it's 2.3 cm = 23 mm (drawn to scale)
a)
Actual diameter = 0.007 mm
Diameter of scaled diagram = 2.3 cm = 23 mm
Formula to use:
Magnification = scaled dimension/actual dimension
Magnification = 23/0.007
Magnification = 3285.714... → x3286
b)
Red blood cells (RBCs), otherwise known as erythrocytes, don't have nuclei and organelles such as mitochondria, are smaller than WBCs and have a biconcave disc shape ideal for purpose
c)
i.
RBCs transport oxygen inhaled into the lungs around the body to all tissues and organs
ii.
RBCs are void of organelles so they are maximally packed with haemoglobin to bind and transport oxygen;
The biconcave disc shape is ideal for flowing through the blood vessels, particularly the capillaries, optimising them for transporting oxygen;
The small size also helps in being able to circulate the vasculature effectively and successfully
a)Actual diameter = 0.007 mm
Diameter of scaled diagram = 2.3 cm = 23 mm
Formula to use:
Magnification = scaled dimension/actual dimension
Magnification = 23/0.007
Magnification = 3285.714... → x3286
b)Red blood cells (RBCs), otherwise known as erythrocytes, don't have nuclei and organelles such as mitochondria, are smaller than WBCs and have a biconcave disc shape ideal for the purpose.
c)i.RBCs transport oxygen inhaled into the lungs around the body to all tissues and organs
ii.RBCs are void of organelles so they are maximally packed with haemoglobin to bind and transport oxygen;
What are RBCs?The biconcave disc shape is ideal for flowing through the blood vessels, particularly the capillaries, optimising them for transporting oxygen;The small size also helps in being able to circulate the vasculature effectively and successfully.
Thus, these are the answer.
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A man is running on the straight road with the uniform velocity of 3 m/s.calculate the acceleration produced by him.
[tex] \huge \bf༆ Answer ༄[/tex]
The acceleration produced by that boy is Zero .
_____________________________________
Want to know how ? here's the reason : -
As he is running with a constant velocity, so there's no change in velocity and Acceleration is defined as " Rate of change in Velocity " and since there's no change in velocity and direction (because he is moving in a straight road) hence Acceleration is 0.
[tex]\large꧁ \: \frak{Eternal \: Being } \: ꧂[/tex]
Chlorophyll changes ______ energy into ______ energy.
Answer:
Light energy to chemical energy
Explanation:
the conversion of light energy to chemical energy needs chlorofluorocarbon
mention 3 ways in which the lack of care to the coral reefs can be resolved
Answer:
1 Recycle and dispose of trash properly.
2 Use environmentally-friendly modes of transportation.
3 Save energy at home and at work
Explanation:
what organ retains or releases body fluids, thereby regulating blood volume and blood pressure?
Answer:
excretion
Explanation:
waste
Answer: Kidneys
Explanation:
40 Points to answer this question in complete sentences
How has the global climate changed in the last century? What has the greatest impact on the climate where you live? Have humans influenced the climate on Earth? If so, how and what should we do?
Answer:
Over the last century, the average temperature on the surface of the Earth has increased by about 1.0 degrees F. The greatest impact is the droughts that my state is constantly in. I believe that we had a great part in global climate change. How I think that we have is all the air pollution and not taking care of out earth the way we should. How I think that we can fix this is if we start powering our home with more solar. We can also reduce the amount of water that we use.
Explanation:
Define terrestrial animal.write any five characteristics of terrestrial animal
Answer:
- living on land or on the ground.
-rather than in water and trees or in the air
-a terrestrial life
-a terrestrial habitat
- and a terrestrial species
Suppose white and brown fur in a species of rodent were due to different alleles at the same gene. An F1 cross between true breeding brown and white lines is set up. What evidence would best support white fur being dominant to brown
An F1 cross between true breeding brown and white lines is set up. What evidence would best support white fur being dominant to brown -----
The best evidence to show that white fur being dominant is when all the offspring after the cross are white instead of brown
They are therefore expected to produce heterozygous lines.
The evidence that would best support white fur being dominant is when all the lines produced are white despite being heterozygous.
A dominant trait is known to mask the expression of other traits.
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HELP NEEDED!!!!!!!!!BIOLOGY
Answer:
Explanation:
isotonic - direction of osmosis is equal on both sides
hypertonic - direction of osmosis is outside of the cell
hypotonic- direction of osmosis is into the cell
In a forest community, a shelf fungus and a slug live on the side of a decaying tree trunk. The fungus digests and absorbs materials from the tree, while the slug eats algae growing on the outside of the trunk. These organisms do not compete with one another because they occupy
A. the same habitat, but different niches
B. the same niche, but different habitats
C. the same niche and the same habitat
D. different habitats and different niches
The shelf fungus and slug in the forest community do not compete with each other as they have the same habitat, but different niches. Thus, option A is correct.
What are habitat and niche?Habitat is defined as the place where the species resides while the niche is the role of the specific organisms or the species in that particular habitat or environment. The niche includes the impact of the species on the habitat.
The shelf fungus and the slug both live on the side of the tree and hence have the same habitat but the fungus takes minerals from the tree and the slug from the algae making them differ in the niche.
Therefore, the fungus and slug have the same habitat but different niches.
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BRAINLIEST AND 50 POINTS!!
Based on information from the cladogram and the data table shown below, which of the following best describes the evolutionary history of rabbits?
Claws/Nails Feathers Jaws Lungs Mammary glands
Bird X X X X
Hagfish
Lizard X X X
Rabbit X X X X
Salamander X X
Tiger X X X X
Trout X
Image depicts a cladogram with hagfish, trout, salamander, lizard, bird, rabbit, and tiger represented. Trout diverge from hagfish with the introduction of jaws. Salamander diverges from trout with the introduction of lungs. Lizard diverges from salamander with the introduction of claws and nails. Bird diverges from lizard with the introduction of feathers. Rabbit and tiger diverge from lizard with the introduction of mammary glands.
They are more closely related to tigers than they are to birds.
They became able to produce mammary glands as a result of lacking feathers.
They evolved into a separate species due to the presence of mammary glands.
They share a more recent common evolutionary ancestor with salamanders than they do with lizards.
Answer:
A. They are more closely related to tigers than they are to birds.
Explanation:
Short answer: I took the test
Actual explanation:
-If you look at the first graphic that you have, you will notice that rabbits and tigers have all the same boxes checked off. AND birds and rabbits only have 3 checked off.
-salamanders actually have less in common with rabbits than they do with lizards, salamanders have 3 things in common, and lizards only have 2, proving option D. wrong. (if you are wondering where I got that evidence, look at the chart) AND if you look at the cladogram, lizards are closer to the rabbits than salamanders meaning that lizards have a more common ancestor (I think?) But nevertheless, it it still wrong, because of the above evidence.
- The options with mammary glands are also incorrect for these reasons, B. makes no sense, literally no sense, why would not be able to produce mammary glands with feathers, so B, is automatically out. With option C, rabbits did not evolve into a whole new species, it is the clade showing that tigers and rabbits both have mammary glands. There is no showing of a new species on the cladogram, and I don't think that it makes sense to evolve into a whole species just because of mammary glands.
- Now, if you look at the cladogram again, you wills see that tigers and rabbits are closest together, meaning that they are closely related. BUT, birds and rabbits are also the closet together, so, refer back to point a, that the chart shows that birds only share 3 out of the 4 that rabbits and tigers share. so that's that.
So after doing the work, option A. Rabbits are more closely related to tigers than they are birds. (and If you read my long explanation THANK YOU I put time and effort into it to make it accurate :))
Hope this helped :)) ~addison
Answer:
A. They are more closely related to tigers than they are to birds.
Option A. Rabbits are more closely related to tigers than they are birds.
Explanation:
I have a shorter answer.
During exercise, the blood is travelling more quickly around the body. This carries more oxygen to the exercise muscles. Describe other changes in the athlete's body that enable more oxygen to be taken in at the lungs.
Answer:
your heart rate goes up explaining why the blood is traveling quicker. this causes you to breath faster meaning bring more oxygen to the blood in your lungs faster. your blood pressure also goes up from the increase in heart rate.
Answer:
the breathing rate and volume of each breath increases to bring more oxygen into the body
Explanation:
it removes the carbon dioxide produced. the heart rate increases, to supply the muscles with extra oxygen and remove the carbon dioxide produced.
membrane molecules that use the energy of atp to move ions against a concentration gradient are called
Membrane molecules that use the energy of ATP to move ions against a concentration gradient are called PUMPS. This type of transport is called active transport.
Active transport is a type of transport that requires energy (e.g, ATP) to move molecules and/or ions against a concentration gradient.
In active transport, specific membrane transporter proteins referred to as pumps are used to move ions against an electrochemical gradient across biological membranes.
These protein pumps are fundamental for creating electrochemical gradients that are subsequently used by cells for diverse purposes (e.g., muscle contraction).
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approximately what percentage of the human genome consists of repetitive dna or transposable elements?
Answer:
45%
Explanation:
Which scientist was the first to use the term cell to describe what he saw under the microscope?
Answer:
Scientist Robert Hooke
two impacts of climate change on agriculture.
Answer:
OKAY FIRST IMPACT:
Crops either get to much sunlight during droughts or to much water during floods
SECOND IMPACT:
Crops may not have the right amount of nutrients or vitamins because of heat produced by the sun every day
BRAINLIST ???
Oi, Its worth 40 points, plus brainliest to best answer.
Use the graph and the information provided to answer the questions.
Stickleback fish protect themselves from predators with a thick covering of brownish plates. They feed on
small aquatic organisms and are preyed upon by bigger fish like trout. In a certain lake, the number of
stickleback fish was documented over a period of 30 years. During this time, the clarity of the lake water
also changed.
1. How did the occurrences of the different traits change over the 30-year period? Use evidence from
the graph to support your answer. Using what you know about natural selection and adaptation, what
generalization can you make based on these changes?
Explanation:
scam fakeeee
just kidding the answer is
every time the differences will change because of the large fishes which kill the small ones and the fishes het big like in one big fish there will be 100 of small fishes like the megladon
during this blood also leaks and the colour of the lake changes
Answer:
In each instance, the variations in fish populations are subject to change due to the predation of larger fish on smaller ones. As a result, the surviving fish grow larger, akin to the manner in which the Megalodon can have hundreds of smaller fish within its body. This process can also result in the release of blood, which has the potential to alter the color of the surrounding water body.
Explanation:
Match each part of the urinary system with the correct label.
Answer:
1 Kidneys
2 Ureters
3 Bladder
4 Urethra
Explanation: are correct in edg
How do CAM plants photosynthesize under bright hot conditions without drying out?
Answer:
by sealing their leaves against water loss and trapping carbon as organic acids
Explanation:
hope this helps :)
Someone can do this please
I am here to give the brainiest answer not to get points
Answer: yes
Biology questionnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn
Answer:
3rd one
Explanation:
Answer:
c. firewood
Explanation:
its a chemical reaction
True or False: Transcription and Translation can occur at the same time for a single mRNA in prokaryotes.
Answer:
False, they cannot
lizards on a small island are more likely to have to mate with close relatives. the form of microevolution is
Answer: the founder effect
Explanation:
Can Someone help me with this?? Your help will be very much appreciated ! Its somewhat confusing so Please help if you dont mind ? ❣️I would love someone that could answer this correctly !! Thank you <333!
Answer:
1)Protein is composed of amino acid.
We can identify protein by sequencing amino acids in peptide.
Carbohydrates is primarily avilabke energy source.
2) Proteins and nucleic acids are made up of C H O But carbohydrates and lipids consist of C H O N.
3)Nucleic acid DNA and RNA store and transmit genetic information from one generation to next generation.
Nucleic acid as present in body therefore not considered as essential nutrients.So dietary sources are plant and animal foods like meat fish vegetables etc.
please help me with insects with out piercing and sucking mouth parts and the reason why. please help me I really request.
Answer:
Insects have a range of mouthparts, adapted to particular modes of feeding. The earliest insects had chewing mouthparts. Specialization has mostly been for piercing and sucking, although a range of specializations exist, as these modes of feeding have evolved a number of times (for example, mosquitoes and aphids (which are true bugs) both pierce and suck, however female mosquitoes feed on animal blood whereas aphids feed on plant fluids. In this page, the individual mouthparts are introduced for chewing insects. Specializations are generally described thereafter.
fundamental similarity due to descent from a common ancestor is called
Answer:
fundamental similarity due to descent from a common ancestor is called homology.
anyone help me? 1 number 2
Answer:
i dunno what class is this of, so tell me in the comment and I may rectify my answer according to that.
btw here u go
Explanation:
in q 1, part a, we need to tell what we observed in the growth of plants. we observed that the plant h was groing faster and healthier that plant g due to the fact that it was provided with a nutritive solution.
in its part b, we write the conclusion, i.e the plant which was provided with a nutritive solution grew more as all minerals required by the plants were replenished properly.
In q2, part a, we just compare their physical properties such as the plant g was not as healthy as plant h and plant h grew faster and taller than plant g.
in q2, part b, we just write what the solution is supplying the plant with, you can also check each one of their speciality on the web and write it also.
hope it helps
;)