3. Assertion (A):- Plasma membrane is a selectively permeable membrane.
Reason(R):- Plasma membrane allows entry and exit of substances from cell through the process of diffusion.
a. Both A and Rare true and Ris correct explanation of the A
b. Both A and Rare true but Ris not the correct explanation of the A
C. A is true but Ris false
d. Both A and Rare false
4. Plasmodium is an example of Bacteria
Answer:
the answer is option B. both A and R are true but R is not the correct explanation of A
Which of the following best explains the importance of studying the ocean carbon cycle?
a. The oceans have a significant impact on the levels of atmospheric gases.
b. It is a new field of ocean science.
c. The ocean releases one quarter of the carbon dioxide in the atmosphere.
d. All of the above
Answer:
d. All of the above
Explanation:
All of the given choices are reasons to study the ocean carbon cycle. The ocean occupies about 70% of the earth surface area and it plays important roles in carbon cycling.
The ocean acts as reservoir for carbon in many different ways especially due to the dissolution of this gas in it. It also releases a significant amount of carbon dioxide to the atmosphere due to the plethora of life within it. The field is also relatively new and more works must be done to understand this cycle.Answer:
The real answer is A
Explanation: edge 2021
Please needed as soon as possible thank you!
Answer:
hemopoiesis
It doesn't protect internal organs. All the others are functions of the skeletal system
Answer:
I think it is B)
production of blood-forming hormones.
Explanation:
All the other ones are functions of the skeletal system.
Which macromolecule is needed for lactic acid formation and alcohol fermentation to proceed with their processes?
IN YOUR OWN WORDS
DONT COPY FROM THE INTERNET
Answer:
sugar
Explanation:
sugar is the required macromolecule
In the lactic acid formation, pyruvate changes to the lactose which is the anaerobic form of respiration. Pyruvate changes to alcohol and carbon dioxide.
What is the main ingredient for lactic acid fermentation ?It is the sugar molecule that is needed for the lactic acid fermentation.
Both the types of the fermentation requires two primary components which are a sugar supply and bacterial culture where alcohol fermentation uses the forms of the yeast where the lactic acid fermentation usually depends on the lactic acid bacteria.
Lactic acid fermentation takes place in some of the strains of the bacteria and in the even skeletal muscle and even produces lactic acid . Alcoholic fermentation takes place in the yeast and just produces ethanol with carbon dioxide.
Lactic acid bacteria is a type of gram-+ve bacteria which use carbohydrates as only and main carbon source. Later on lactic acid bacteria is generally cocci or rods usually have the strong tolerance to low pH.
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Atoms Bond to each other in order to become__________. *
Answer:
im not really sure but maybe awnser but i think its an electron
Explanation:
Answer:
more stable
Explanation:
atoms bond to gain/lose electrons in order to complete their valence shells and make them more stable
A newspaper article reported that a fossil was found that was 200,000 years old according to generally accepted radioactive
determination because the fossil was found closer to the Earth's surface than were previously discovered fossils of the same
Older rock layers commonly lie deeper underground than younger ones.
Older rock layers may be pushed closer to the surface by geologic processes
The age of a rock layer can often help in determining the age of the fossils it contains
Fossils form only under certain conditions
Answer: Older rock layers may be pushed closer to the surface by geologic processes.
Explanation:
Which of these contribute to the reduction in the population of harvested organisms?
a) harvesters
b) government
c) scientific research
d) all of the above
Answer:
D
Explanation:
I think I think I think I think
Which hypothesis helps to explain why all organisms share the same genetic code?
What is shown in the
image below?
A. Food chain
B. Trophic chain
C. Food web
D. Energy web
Plz help on a timed quiz!
Will give 30 points to who answers and will try to give Brainiest if right :)
Answer:
the answer is food web.
Explanation:
it says it at the top of the picture :)
structure and function
When cells of
join together, they form
obvious, cells
different, tissue
similar, tissue
Answer:
I think it may be b but the question is a little confusing
1) Eubacteria cells lack a nucleus, and are therefore________
Viewing eubacteria requires a microscope,because they all single celled organisms.another word for single celled is_______
Answer:
The correct answer is - prokaryotic and unicellular.
Explanation:
Eubacteria is known as the true bacteria and belongs to the prokaryotic type of cells which is characterized by no double-membrane organelles or the nucleus. All the genetic material is present in the cytoplasm itself.
These bacteria are single-cell microscopic organisms as they are very minute to see by the naked eyes and required a microscope to study. Another word for the single-cell organisms is unicellular.
Why do you think Elodea
has so many chloroplasts in each cell?
I WILL GIVE YOU BRAINLYEST!!!
Answer:
It depends It is important to understand the fact that the number of chloroplasts in an elodea cell can vary. The main idea is that there are not a fixed number of chloroplasts in elodea cell. This signifies that there is not a specific amount in each cell.
I Hope It Helps.
A forest fire caused by lightening destroys an entire forest. The population of deer was drastically reduced within the forest leading to a decrease in genetic variation. This situation is an example of -
Mutations
Gene Flow
O Genetic Drift
Divergent evolution
Answer:
I'm like 90% sure that it is Gene flow
Explanation:
pleaseeeeeeeeeeeeeeeeeeeeeeee help
Answer:c
Explanation:
Suppose that this population of mice has stabilized so that both white and brown appear. White mice survive better in the winter and brown mice survive better in the warmer months. If a group of these mice migrated to an area that didn't get snowy in the winter, what do you think would be the long term effect on the color of these mice? Explain why.
Answer:
The population of the white mice would significantly decrease, and most of the mouse population would be with brown fur.
Explanation:
As stated in the question, the brown mice survive better in warmer times. This is due to the fact that with winter and snowy times it makes it harder for prey to spot the WHITE mice v.s. the BROWN mice who would very easily be spotted by the prey in snowy regions.
in order to digest, our food passes through our mouths, our stomachs, our livers, and our intestines. multiple organs work together to perform a specific function like digesting, they are called..
A. An organ system
B. Digestive Tissues
C. Food Cells
D. Organelle System
Answer Asap!!!! First answer gets brainliest!
Answer:
C
Explanation:
What is the greenhouse effect?
Explanation:
The greenhouse effect is a natural process that warms the Earth's surface. When the Sun's energy reaches the Earth's atmosphere, some of it is reflected back to space and the rest is absorbed and re-radiated by greenhouse gases. The absorbed energy warms the atmosphere and the surface of the Earth.
Ducks have flat beaks and webbled legs
the correct sequence in the expression of a trait
Answer:
The amino acid sequence is present in proteins and proteins are responsible for providing character.
Explanation:
Thus, the correct sequence in the expression of a trait gene protein trait.
Biology homework please help
Answer:
muscles
ribs
lungs
bronchioles
alveoli
diffuses
leaves
exchange
Explanation:
Your diaphragm, and muscles between your ribs, make air move in and out of your lungs. It travels through the trachea, bronchi, and bronchioles to alveoli. In the alveoli, oxygen diffuses into the blood and carbon dioxide leaves. This is gas exchange.
Air enters the lungs and leaves it as a result of the relaxation and contraction of the diaphragm and the muscles between the ribs. When both the muscles and the diaphragm relax, air enters from the trachea and travels through the bronchi and the bronchioles to the alveoli, where the oxygen in the air diffuses into the blood and carbon dioxide diffuse in the opposite direction. The entire process is known as gas exchange.
Which of the five stages of respiration takes place at the alveoli?
Answer:
External respiration is the exchange of gases with the external environment, and occurs in the alveoli of the lungs.
need help on 12-19
if u don't know don't answer
Answer:
sup bus down totoan or nle top shootasup bus down totoan or nle top shootasup bus down totoan or nle top shoota
Explanation:
The process of _______ involves the removal of dissolved minerals from water so it can be used for drinking. a. desalination b. water reclamation c. greywater use d. irrigation
Answer:
a.
desalination
Explanation:
a.
desalination
The process of desalination involves the removal of dissolved minerals from water so it can be used for drinking.
What is the desalination process?Desalination is the process by which mineral salts dissolved in water are removed. Currently, this process, applied to seawater, is one of the most used to obtain fresh water for human or agricultural consumption.
With this information, we can conclude that The process of desalination involves the removal of dissolved minerals from water so it can be used for drinking.
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Fruits help your body:
Produce vitamin D
Make seratonin
Sleep
Heal
Answer:
Explanation:
Fruits are an excellent source of essential vitamins and minerals, and they are high in fiber. Fruits also provide a wide range of health-boosting antioxidants, including flavonoids. Eating a diet high in fruits and vegetables can reduce a person's risk of developing heart disease, cancer, inflammation, and diabetes
True or false:
The oceans influence earth’s atmosphere?
Answer:
true
Explanation:
the answer should be true.
How does farming change the biosphere?
A) It increases the amount of carbon dioxide in the atmosphere, contributing to the buildup of greenhouse gases.
B) It induces changes in global biogeochemical cycles.
C) It speeds up the decomposition of organic matter in soil.
D) It contributes to the loss of competing ecosystems, the decrease of biological diversity, and the increase in endangered species.
E) All of the above
Answer:
A
Explanation:
It increases the amount of carbon dioxide in the atmosphere, contributing to the buildup of greenhouse gases.
Where does FGF5 occur in the cell?
Answer: FGF5 is produced in the outer root sheath of the hair follicle as well as perifollicular macrophages, with maximum expression occurring in the late anagen phase of the hair cycle. The receptor for FGF5, FGFR1, is largely expressed in the dermal papilla cells of the hair follicle.
Explanation:
Can you help me? Please
1. pH (fun fact, it means potention of hydrogen )
2. H+
3. hydronium ion
4. 7
5. 7
6. OH-
7. acidic
8. alkaline
What type of resource is the sun and why?
The sun is a perpetual resource because solar radiation steadily streams from the sun now, but it will only do so for the next thousand years.
The sun is an unsustainable resource because solar radiation steadily streams from the sun without interruption and is expected to do so for the next 6 billion years.
The sun is an unsustainable resource because solar radiation steadily streams from the sun now, but it will only do so for the next thousand years.
The sun is a perpetual resource because solar radiation steadily streams from the sun without interruption and is expected to do so for the next 6 billion years.
Answer:
The last answer
Explanation:
The sun is a perpetual resource because solar radiation steadily streams from the sun without interruption and is expected to do so for the next 6 billion years.
What do you mean by perpetual resource?Perpetual resources are those that last forever like solar energy and wind. Non-renewable resources, once extracted completely from a given area, will never be available in the same spot again (except after millions of years).
Perpetual resources are natural resources—such as solar energy, wind, and tides—that have no chance of being used in excess of their availability. They can be used for power generation and conversion to electric energy.
Sunlight, wind, geothermal heat, tides, and flowing water are perpetual resources. On Earth, there are only limited amounts of fossil fuels such as oil, coal.
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Which of the following normally leads to the production of functional messenger RNA in eukaryotic cells?
Answer: The removal of portions of RNA known as intervening sequences (introns)
Explanation:
The removal of portions of RNA is known as intervening sequences (introns).
What is the process of splicing?In order to enable the translation of mRNA into a protein, RNA splicing puts together the protein-coding regions (exons) and cuts out the intervening, non-coding segments of genes (introns) from pre-mRNA.
Intron sequences are cut out and exon sequences are joined during the splicing process.
As RNA matures, introns are cut out via RNA splicing, which means that they are not expressed in the resulting messenger RNA (mRNA) product.
In contrast, exons continue to be chemically bound to one another to produce mature mRNA. Exons are expressed sequences, whereas introns can be thought of as intervening sequences.
Therefore, the removal of portions of RNA is known as intervening sequences (introns).
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