Answers
Answer:
1) Diffusion : Is the movement of molecules / ions from a region of higher to lower concentration. It may or may not occur across a semi permeable membrane.
In diffusion there is no challenge involved as it is along the concentration gradient, but in active transport movement of molecules occur against concentration gradient ie; from lower to higher concentration.
2) For active transport, energy is vital for movement, in this case protein molecules function as molecular pumps to enable the cell accumulate glucose/ions, against concentration gradient. Here metabolic energy ATP is required.
3)Facilitated diffusion is a type of passive transport in which ions/molecules cross the semi permeable membrane because permeases present in the membrane facilitate the transport.
Like simple diffusion facilitated diffusion doesn't require metabolic energy and simply occurs across the concentration gradient.
4) Osmosis : is movement of water from hypotonic solution (lower concentration) to hypertonic solution (higher concentration) through a semi permeable membrane.
The cell membrane being permeable to water allows to and fro movement of water molecules along the concentration gradient.
Related Questions
the use of dna information to direct the production of particular proteins is called
Answers
Answer:
translation is the use of dna information to direct the production of particular proteins
What are the 2 main groups into which cells are classified? What is the major difference
between them?
Answers
Answer:
Eukaryote and Prokaryote
Eukaryotes have a nucleus and prokaryotes don't
Answer:
Prokaryotic and Eukaryotic
Explanation:
a deposit of plaque on or within the arterial wall is known as a/an:
Answers
Answer:
Atherosclerosis
Explanation: It is a condition characterized by the formation of fatty plaques on the inner walls of the arteries
State two reasons why the fetal blood must not mix with the maternal blood?
Answers
Answer:During pregnancy, red blood cells from the unborn baby can cross into the mother's blood through the placenta. If the mother is Rh-negative, her immune system treats Rh-positive fetal cells as if they were a foreign substance. The mother's body makes antibodies against the fetal blood cells
Explanation:
the process of red blood cell production is called
Answers
Answer: Erythropoiesis
Explanation:
what color is the wild-type eye in d. melanogaster?
Answers
Answer: red-brown eye color
Write 2-3 complete sentences to describe the government in United States
Answers
Answer:
The United States government is a constitutional, federal republic composed of three branches: legislative, executive, and judicial. Each branch has its limitations of powers and responsibilities to ensure that citizens have their rights protected and that the government is successfully working.
Explanation:
what is the final electron acceptor of the photosynthetic electron transport chain?
Answers
So, this are the required information on it. ☺
Where does protein synthesis begin?
Answers
Answer:
Protein synthesis occurs in the cytoplasm on ribonucleoprotein particles, the ribosomes.
Explanation:
hope it helps
help with biology please!
Answers
How can you test the idea that solar energy is required for the reduction of NADP+ to NADPH?
Answers
Answer:
In addition to biology, evidence drawn from many different disciplines, including chemistry, geology, and mathematics, supports models of the origin of life on Earth. In order to determine when the first forms of life likely formed, the rate of radioactive decay can be used to determine the age of the oldest rocks (see optional problems C and D, below) exposed on Earth’s surface. These are found to be approximately 3.5 billion years old. The age of rocks can be correlated to fossils of the earliest forms of life. A. The graph compares times of divergence from the last common ancestor based on the fossil record with a "molecular time" constructed by comparing sequences of conserved proteins to determine a mutation rate (after Hedges and Kumar, Trends in Genetics, 2003). Explain how such a molecular clock could be refined to infer time or the evolution of prokaryotes. B. Using a molecular clock constructed from 32 conserved proteins, Hedges and colleagues (Battistuzzi et al., BMC Evol. Biol. 2004) estimated the times during which key biological processes evolved. A diagram based on their work is shown. Connect the time of the origin of life inferred from this diagram with the age of the oldest fossil stromatolites and the age of the oldest exposed rock to show how evidence from different scientific disciplines provides support for the concept of evolution. Evaluate the legitimacy of claims drawn from these different disciplines (biology, geology, and mathematics) regarding the origin of life on Earth. The oldest known rocks are exposed at three locations: Greenland, Australia, and Swaziland. The following application of mathematical methods provides essential evidence of the minimum age of Earth.
Explanation:
which particles cannot pas through the cell membrane
Answers
Answer:
glucose, charged particles
Explanation:
HELP!
Of the following, what is the most important for ATP production?
A) amount of sunlight
B) carbon dioxide
C) concentration water concentration
D) glucose concentration
E) oxygen concentration
Answers
Answer:
I THINK ITS A
im not sure tho
An atom that has twelve protons in its nucleus has an atomic number of:
24
13
12
none of the above
Answers
Answer:
Protons-12, Electrons-12, Neutrons-12
Answer
12 would be the correct answer
Explain the process of evolution by natural
selection.
Answers
Answer:
Natural selection is a process where organisms that are better adapted to an environment will survive and reproduce. This means that the advantageous alleles of this variant organism are passed on to offspring. Over many generations, the process of natural selection leads to evolution occurring.
Explanation:
this should give you your answer but if not please tell me
NEED ASAP PLEASE
Explain the difference between microscopic and macroscopic protozoa.
Answers
Answer:
Microscopic organisms can be seen only under the magnification(microscope) whereas macroscopic can be visible by naked eye.
Explanation:
what is the name of the tiny air sacs in your lungs?
Answers
Answer:
alveoli
Explanation:
how can different amino acids affect secondary structure
Answers
Answer:
Exposure to positively charged amino acids (arginine and lysine) is found to clearly stabilize the secondary structure. Kinetically, each amino acid promotes folding by generating a large increase in the folding rate with little change in the unfolding rate.
what is an example of a prokaryote that does binary fission?
Answers
Answer:
Prokaryotes such as E. coli, Archaea as well as eukaryotes such as euglena reproduce through binary fission. Binary fission is a form of cell division in eukaryotes. In prokaryotes, it is a form of asexual reproduction Binary Fission in Bacteria
Explanation:
How do plants control homeostasis?
Answers
Answer:
it happens with they mind bro
Answer:
Angiosperms or flowering plants maintain homeostasis by keeping their stomata (opening in the underside of a leaf that allows carbon dioxide to diffuse into and out of the leaf) open just enough to allow photosynthesis to take place but not so much that they lose an excessive amount of water.
please give brainliest
Does hot water tend to rise or sink? Explain.
Answers
Answer:
When fluids (liquids and gases) are heated, they expand and therefore become less dense. Any object or substance that is less dense than a fluid will float in that fluid, so hot water rises (floats) in colder water.
Explanation:
When you heat up water, the water molecules start moving around faster and faster. ... So hot water is less dense than cold water. When you put the two together with the hot water on the bottom, the hot water rises to the top.
Please mark me as brainlist if it is helpful.
how long is evaporated milk good for after expiration date
Answers
Answer:
it's not...throw it away
how does frshwater ecosystems help with flood conrol
Answers
Answer: In terrestrial ecosystems the presence of vegetation in floodplains and watersheds can reduce the occurrence and severity of flooding by slowing water flows, enhancing percolation and storage, and allowing gradual release of water, thereby maintaining base flows and reducing peak flows.
Explanation:
Please help serious answers only
Answers
Answer:
venus
Explanation:
Linnaeus' classification of life only included two categories: animals and plants. Which three kingdoms did he leave out? ( point)
O Insecta, Fungi, and Monera
O Monera, Bacteria, and Protista
O Fungi, Monera, and Protista
O Bacteria, Insecta, and Protista
Answers
Answer:
C
Explanation:
These are the three missing kingdoms
Fungi, Monera, and Protista are the three kingdoms he neglected to mention.
What Linnaeus classification?The Linnaean system is based on similarities in apparent physical qualities. This system is a hierarchy of taxa, from the kingdom to the species. Each species is given a unique two-word Latin name. The domain, which was just added and is a larger taxon, is smaller than the kingdom. Seven levels make up Linnaeus' hierarchical classification scheme. They are kingdom, phylum, class, order, family, genus, and species, in order of largest to smallest. Linnaeus created a hierarchy for nature in Systema Naturae. He suggested that the entirety of nature may be divided into three big categories known as kingdoms. Animals, plants, and minerals made up these three kingdoms. He categorizes each of these kingdoms.To learn more about Linnaeus classification refer to:
https://brainly.com/question/26553578
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1. The 1930s Dust Bowl in the Great Plains was caused by (1 point)
(O pts) deforestation.
0 (0 pts) contour plowing.
0 (0 pts) using renewable resources.
(1 pt) poor farming practices.
Answers
Answer:
poor farming practices
Explanation:
The flow of carbon from one carbon source to another is considered a carbon ___.
A. sink
B. flux
C.store
D. site
WILL MARK BRAINLIEST
Answers
Answer:
C.store of manila philippines is most beautiful in the earth
Explanation:
I think that is the true answer in this question please hearts me in brainly and give me a star ⭐
The answer is A.
The carbon flow is from the source cells such as leaf to the sink cells such as fruits.
If a mutation occurs during the dna replication process of an intestinal cell undergoing mitosis then predict the most likely outcome
Answers
the external energy source for producers is ________ and the final energy-rich product produced in the mitochondria of consumers is ________.
Answers
Answer: the external energy source for producers is The sun and the final energy-rich product produced in the mitochondria of consumers is adenosine triphosphate (ATP).
The first one is: The sun
The second one is: adenosine triphosphate (ATP).
Explanation: I hope that's what you're looking for. Have a nice day studying.
An engineer tests three new ceramic parts, each of which could potentially replace a steel part inside an automotive engine. The three parts, identical in size, are each made of a different ceramic compound. The parts are heated to the same temperature and placed under the same stress loads. At the end of the test, the engineer concludes Part B is the best for the job. What was the independent variable in this test?
Select one:
a. dimensions of the parts
b. temperatures to which the parts were heated
c. the engine used to test the parts
d. the composition of the parts