Answers
Answer:
According to the image that represents a cell in the human body, the true statement is that structure 4 is the cell membrane that provides exchange of O₂ & CO₂.
Explanation:
In cells, the cell membrane acts as a semi-permeable barrier to the passage of substances, including nutrients and oxygen (O₂).
One of the functions of the cell membrane is to allow the exchange of O₂ —necessary for the cell— and carbon dioxide (CO₂), a product of cell metabolism that must be removed.
In the image, the structure identified with the number 4 corresponds to a cell membrane of human cells that provides this gas exchange.
The other options are not correct because:
Structure 1 is a ribosome, not a chloroplast. Structure 2 is the nucleus, not a vacuole containing DNA. Structure 3 is a mitochondria, but protein synthesis does not occur there.Related Questions
The cell theory is a scientific explanation about the characteristics of cells in living things discovery of cells occurred in the 1600s which piece of equipment my students in science class used to investigate the cell theory
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Answer:
Then, what is the question????
In 1665, Robert Hooke, a scientist published Micrographia, a book full of illustrations and descriptions of organisms observed under the recently invented microscope, hence Hooke's discovery of the cell was successful with the invention of the microscope.
What is Microscope?A microscope is defined as a laboratory instrument used to examine objects that are too small to be seen by the uncovered eye. Microscopy is the science of examining small objects and structures using a microscope. The word microscopic means invisible to the eye unless aided by a microscope.
Without the microscope, we would not know about the existence of cells or how plants breathe or how rocks change over time. Cell theory was discovered by Robert Hooke in 1665 with the help of a microscope.
Thus, in 1665, Robert Hooke, a scientist published Micrographia, a book full of illustrations and descriptions of organisms observed under the recently invented microscope, hence Hooke's discovery of the cell was successful with the invention of the microscope.
Learn more about Microscope, here:
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where should buildings be constructed if we want them to survive major earthquakes
Answers
Answer:
Engineers must design in structures that can absorb the energy of the waves throughout the height of the building.
Explanation:
What phenomenon is considered to be evidence of the universe "cooling off" after the great explosion of the
Big Bang?
black holes
O cosmic background radiation
O gamma rays
O X-rays
Answers
Answer:
If I’m correct it’s O cosmic background radiation
Explanation:
Answer:
black holes
Explanation:
7.
Students were investigating the movement of water through a semi-pern
with the salt concentration shown below.
Answers
Answer:
It depends on the salt concentration inside the cell.
Explanation:
The movement of water through a semi-permeable membrane with different salt concentrations depends on the amount of water and salt concentration in the cell. If the cell has more salt concentration so no more salt moves inside the cell but moves outside the cell while on the other hand, if the cell has low amount of salt than the outer environment then the salt moves inside the cell until its concentration are equal.
what months can you not eat oursters
Answers
Answer:
May, June, July, and August.
Explanation:
*oysters?
The months that do not have an r you can eat oysters. The months that have an r, you cannot eat oysters, which are April, January, February, March, September, October, November, and December.
Expoisoning.
only eat oysters with a letter "r" from the the months of September thru April. I t prevents from getting watery shellfish and food poisioning.
* Do not eat oysters in May, June, July or August*
help me out please!
Answers
Answer:
223
Explanation:
Answer:
the answer is c because it grabs carbon and turns it into oxygen which is what we breath
•Who developed DNA fingerprinting?
•explain individual evidence and trace evidence according to DNA
•explain the use of a DNA probe
Answers
Answer:
Alec jefferis developed DNA fingerprinting.
What evidence is there that all living things are made of cells?
Answers
Anton von Leeuwenhoek develops a more powerful microscope that allows him to see living cells like bacteria. Matthias Schleiden and Theodor Schwann conclude that all living organisms are made of cells, and that cells can be produced from other cells.
A cell can be described as the structural and functional unit of life. It can also be described as the building material of all living organisms.
Without the cell, most living organisms will not be able to function. An organelle will not be able to survive that long within its life span without the presence of cells. It will just withe and die off.
Lots of scientists have proved in various ways the existence of cells, this is because they have been able to create microscopes that can see these tiny cells. This is evidence that proves the existence of cells.
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Which specialist is needed to maintain a patient's
stability in a surgery during which the heart is
stopped?
echocardiogram technician
cardiologist
cardiac perfusionist
cardiology nurse
Answers
Answer:
Cardiac perfusionist
Explanation:
just trust me bro
900.j of work are done by a light bulb in 15.0 s. What is the power of the light bulb?
Answers
Which 4 characteristics would farmers want bred in to the modern pig? Will give brainliest!
Answers
Answer:
Selective breeding means herd improvement, on things such as milking ability, mothering ability, carcass quality, forage utilization efficiency, stability, birth weights, weaning weights, etc and they taste better.
Explanation:
The image below depicts a bowling ball traveling down the lane and striking pins, knocking them down. Identify at least two forces acting on the bowling ball.
1. gravity
2. friction
3. air resistance
(also called ‘drag’)
4. density
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how does a banana become a banana?
Answers
There is a seed in the banana and then the seed grows into a tree and produces more banana
When one or more nucleotides are lost, this is called
Answers
Answer:
Deletion mutation
Explanation:
A deletion mutation can remove a single nucleotide, or entire sequences of nucleotides
8. There can only be one logical inference for any given observation. (T/ F)
Answers
Because u can give out as many inferences
Which two words would BEST replace "mimicked" and composition in the selection above WITHOUT Changing the meaning?
(A) dissolved contents
(B) located, foundation
(C)
formed, structure
(D)
resembled, makeup
Answers
Answer:
The answer is D.
Explanation:
I need help on this help
Answers
Answer:
the answer is within young Padawan
Explanation:
Someone plz help with all the questions
Answers
Answer:
The surface of the pond froze overnight.boughSherry needs a new break on her motorcycle before she'll be able to race.Their dog got mud in its fur from rolling in a mud puddle.factAnalogy of Cell wall
Answers
Answer:
In school, I was taught that it is like a bouncer who controls who enters and exits the club because the cell membrane controls what is able to permeate into the cell. It’s good, but I like to think of it as a door.
HELP ME
this is a K12 question
The weather is warm and dry.
Which change would a cold front bring?
rain or thunderstorms
extended period of rain or snow
dry air and sunny skies
several days of gray skies
Answers
Answer:
rain or thunderstorms
Explanation:
Answer: It brings rain or thunderstorms.
Hope this helps!
What shares ¼ of its genes with humans?
Answers
(GIVING BRAINLIEST!!)
Which statement about oceans is incorrect?
A) Evaporation occurs when water is warmed by the sun.
B) Most evaporation and precipitation occur over the ocean.
C) 97 percent of Earth's water is fresh water from the ocean.
D) Water leaves the ocean by the process of evaporation.
Answers
Answer:
Evaporation occurs when water is warmed by the sun
Answer: 97% of earths water is salt water that one is incorrect.
Explanation:
Use the data shown to sort each of the choices into the appropriate column.
summarize: when is it appropriate to use antibiotics?
Answers
Answer:like when you have a sore throat or a kind of common sickness
Explanation:
Does anyone know how to do this???
Answers
Pls, Hurry up? True or False + Explain. "Sea anemones are sessile organisms and stay permanently attached to their substrate."
Answers
Answer:
True
Explanation:
Sea anemones are one of the numerous predating animals found in the marine environment. They have cylindrical bodies whose bases are usually found attached to substrates and are therefore described as being sessile. However, a few species of sea anemones are known to be free swimmers.
Generally, sessile organisms are those that live their life attached to a substrate and, therefore, are not able to freely move about.
Answer:
True
Explanation:
This is because sea anemone polyp is permanently attached to the beneath of the base where it stay by it base called pedal foot. It sometimes glide around in order to prevent itself from predation and it uses it's tentacle to catch moving food particles around it and consume it. It belong to the group cnidaria.
2. "Natural selection is usually thought of as an agent of change in populations, but it can also act to maintain the status quo."
In a short, written response, analyze and evaluate this statement. Include the range of responses of a population to changes in the environment, such as differential reproductive success, the adaptation and development of diversity in and among species, and the change in populations.
Answers
Answer:
Those organisms survive and maintain its population who are chosen by natural selection.
Explanation:
This statement means that when the population experiences a new set of environmental conditions, two things are happened i. e. the population either adjusts through natural selection or becomes extinct. The fossil of dinosaur indicates that extinction occur due to changed in the environment. If the population made changes in itself and adapt the environment then the organism survive otherwise extinction occur.
define natural greenhouse
Answers
Answer:
the natural process that warms the earth's surface is known as natural greenhouse.
Prokaryotic cells NEVER have a nucleus
A. True
B. False
Answers
Answer:
false
Explanation:
Answer:
The answer is A. true
Explanation:
Which of the folllowing is true about the efficiency of the energy conversions in terms of the overall energy available to human shown in these diagrams
Answers
Answer:
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If blood is in short supply which blood type would be the most beneficial to have on hand if someone needed a blood transfusion