Enlist the features of cell membrane.
Answers
Answer:
It is the outermost covering of a cell that separates the contents of the cell from its external environment.
It only allows the entry and exit of some materials. It also prevents the movement of some. Therefore, it is also called a selectively permeable membrane.
Some substances like carbon dioxide and oxygen can move across the cell membrane due to the process known as diffusion.
Water also obeys the laws of diffusion. The movement of water molecules through a selectively permeable membrane is called osmosis.
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[tex] \huge \underline \pink {cell - membrane}[/tex]
The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment. The cell membrane consists of a lipid bilayer that is semipermeable. The cell membrane regulates the transport of materials entering and exiting the cell.
Related Questions
9. Why is the synthesis stage called this?
a. because protein synthesis is taking place
b. because DNA synthesis is taking place
c. because it combines several smaller stages into one
d. because the chromosomes come together
Answers
Which of the following is found in plant cells and NOT in animal cells?
Cell membrane
Cell Wall
Cytoplasm
Mitochondria
HELP!!
Answers
the answer is calculated to "Cell Wall"
Explanation:
I'm pretty sure that it's cell wall!
the members of these kingdoms all have cell walls. Which kingdoms are they?
Answers
Answer:
kingdom plantae
Explanation:
members of this kingdom have a cell wall that gives their cells a box like structure
Organisms that belong to Kingdom Monera, Protista, Fungi, and Plantae all have cell walls.
What is a cell wall?The cell wall is the outermost covering of the cell which provides the cell with a rigid structure and protects it from the outside environment. It is present outside the plasma membrane.
The composition of the cell wall differs in different organisms. The cell wall in plants is composed of cellulose, hemicellulose, and pectin. In algae, the cell wall is composed of glycoproteins and polysaccharides.
Bacteria that belong to Kingdom Monera possess a cell wall composed of peptidoglycan while the organisms of Kingdom Fungi have a cell wall made up of chitin.
Therefore, organisms of the four kingdoms Monera, Protista, Fungi, and Plantae all possess a cell wall.
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During meiosis, a process known as crossing over occurs. Which statement below summarizes the results of crossing over?
O Homologous chromosomes make copies of each other.
Genetic information is removed from both chromosomes.
O DNA winds up into chromosomes and genetic information is deleted.
O DNA is exchanged between homologous chromosomes, resulting in genetic variation.
Answers
Answer:the answers is B
Explanation:
Because reproduction occurs between homologous a chromosome
During meiosis, a process known as crossing over occurs. Genetic information is removed from both chromosomes.
What is meiosis ?Meiosis is the process where a single cell divides twice to produce four four haploid daughter cells which are otherwise called as gametes; It can occur in two substages such as meiosis I and meiosis II.
Humans have 46 chromosomes in every cell, where 23 chromosomes t came from one of our parents and 23 very similar chromosomes that came from the other parents.
Meiosis I consist of substages like Prophase I where nuclear envelope disintegrates, Chromosomes begin to condense, Spindle fibres appear.
Secondly Prometaphase I where Spindle fibres attach to the centromere followed by Metaphase I where The homologous chromosomes align at the equatorial plate, Anaphase I where he homologous chromosomes move towards the opposite poles.
Telophase I where Spindle fibres disappear, Cytokinesis I where the cytoplasm and the cell division result in 2 non-identical haploid daughter cells.
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Which of the following appear to cause movement of the Earth's tectonic
plates?
Answers
Answer:
The force that causes most of the movement is thermal convection, where heat from the Earth's interior causes currents of hot rising magna and cooler sinking magna to flow
Explanation:
WILL MARK BRAINLIEST!!!!!!!
Which choice names the two parts of Earth that make up the lithosphere?
crust and outer part of the mantle
mantle and outer core
inner core and mantle
inner core and outer core
Answers
Answer:
crust and outer part of the mantle
Explanation:
lithosphere includes brittle upper portion of the mantle and crust and the outer most layers of the earths structure and it is bound by the atmosphere above the asthenosphere
How does human activity impact Earth's systems such as deforestation
urbanisation desertification, erosion, air and water quality, and
allemating the flow of water?**Please use full sentences ****
Answers
Answer: Land, Water,Urbanization, and smog and acid rain.
Explanation:
Smog and acid rain are produced through similar sources, primarily vehicle and industry emissions. Though both result from human-caused air pollutants, there are chemical distinctions between the two. Though there are regulations in effect to reduce both types of pollution, they remain a threat to both human health and the environment.Smog Causes A combination of three components -- nitrogen oxides, volatile organic compounds (VOCs) and sunlight -- causes smog. Nitrogen dioxide interacts with sunlight to create nitrogen oxide and a free oxygen molecule. This interaction produces ozone, which typically turns back into nitrogen dioxide, and the cycle repeats. The addition of VOCs interrupts the cycle, however. VOCs are produced by various sources, such as paint, cleaning products and refrigerants. The VOCs prevent the breakdown of ozone, allowing it to gather near the surface of the Earth, where even more nitric oxides are produced by vehicle and industry emissions, creating the dense smog seen in large cities such as Los Angeles and Beijing.Smog Hazards The presence of ozone in the form of smog can have several negative health effects. Respiratory systems can be irritated, reducing overall lung function and triggering asthma attacks. Evidence reported by the Environmental Protection Agency also suggests exposure to ozone reduces immune system responses, especially in the lungs. These effects subside over time, but little is known about the long-term effects of repeated exposure. Vegetation also suffers from smog, as plants that take up too much ozone can be damaged in ways such as discoloration and a loss of leaves that cuts photosynthesis efficiency by up to 50 percent.
Which phrase best defines evolution by natural selection? pls help
Answers
Answer:
A process of change in a species over time. Interbreeding among members of a population results in. No change in the relative frequencies of alleles in the gene pool.
Answer:
Process where certain individuals in a population survive because they are better adapted to their environment, so they are more likely to pass on their genes. The mechanism of evolution.
Please help, I have no clue
Answers
Answer:
FRESHWATER FISH DUH. LIKE THE PERSON BIHIND ME SAID.
Explanation:
A male and a female, both with dimples, have a son without dimples. Which of Mendel's laws does this pattern of inheritance illustrate, and how do you know? AND What is the chance that a daughter of these parents would have dimples? Explain your answer.
Answers
Answer:
Explanation: Could you have drawn something different in question 3d? Explain. ... yes if both parents are heterozygous. 14 Chance no dimples. 1/4 dd 1/4 no ... If a woman is heterozygous for dimples and has 5 fingers, and a male is ... a Punnett square and calculate genotype and phenotype frequencies to explain your answer.
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According to the Mendel's Law of Segregation. Since, a male and a female, both with dimples, have a son without dimples which mean both the parents are heterozygous (Aa). since both are Aa × Aa there will be Aa, Aa, AA, aa. in which AA is dominant and aa is recessive thus the chance that a daughter of these parents would have dimple is 3/4.
What is Mendel's law of segregation?
Mendel's Law of Segregation states that a diploid organism passes a randomly selected allele for a trait to its offspring, such that the offspring receives one allele from each parent.
Thus, the chance that a daughter of these parents would have dimple is 3/4.
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I'm asking this out of personal curiosity, not for school. but it's still for educational purposes kinda, so I hope it's okay.
If a flower is wilted, but not totally dead and withered yet, is the flower dead and it's dead flower body is in the process of decomposing, or is the flower like in the flower stage of being an old person, it lived and now it's old, but not dead yet?
Here's an example of the flower stage I mean. ^-^
Answers
To put it simply, the flower is not dead yet, it’s just “old” :D
YO PLZ HELP!!
The Golgi apparatus modifies, sorts, and packages different substances for secretion out of the cell, or for use
within the cell.
Answers
Answer: The Golgi apparatus modifies, packages, and sorts proteins for secretion or use within the cell
Explanation:
The Golgi apparatus modifies, sorts, and packages different substances for secretion out of the cell, or for use within the cell. The Golgi apparatus is found close to the nucleus of the cell where it modifies proteins that have been delivered in transport vesicles from the RER.
Hope this help.
Answer:
.......................
have a good day :)
Explanation:
The endocrine system regulates the body through hormone release. Like the nervous system, what does the endocrine system help maintain?
A. homeostasis
B. reflexes
C. chemicals
D. neurons
Answers
Answer:
How is the endocrine system related to the nervous system in terms of its regulatory activity?
For one, the endocrine system uses chemical signaling (hormones, produced by glands) while the nervous system uses electrical signaling (neural impulses). The signal transmission of the nervous system is fast because neurons are interconnected, but the functions are more short-lived.
Explanation:
name the ecological instrument used in measuring aquatic factors
Answers
Answer:
Several tools aid ecologists in measuring abiotic factors, including thermometers, altimeters, pH meters and many other devices.
what is a cladogram and why is it used
Answers
Answer:
A cladogram is a diagram used to represent a hypothetical relationship between groups of animals, called a phylogeny. A cladogram is used by a scientist studying phylogenetic systematics to visualize the groups of organisms being compared, how they are related, and their most common ancestors.
Explanation:
please no coments
Answer:
A cladogram is a diagram that shows the relationships between organisms. It is used for scientists to visually see how organisms are related, the common ancestors they have, and allows people to compare organisms to each other.
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NEED HELP plzzzzzzz
As amino acids are lined up by tRNA, they form bonds. What is made from very long chains of these amino acids?
A. amino acid complexes
B. mitochondria
C. rRNAs
D. proteins
Answers
Answer:
Protiens
Explanation:
Amino Acids are protiens, so after the tRNA join to the MRNA peptide bonds are formed creating long protien chains which are protiens.
what is this data saying?
Answers
Answer:
Gene flow is the exchange of alleles between two or more populations. For this reason it is sometimes referred to as allele flow or gene migration. While migrating animals often carry new alleles from one population to another, they must interbreed with the new population for gene flow to occur. In the image below, a beetle from a population of brown beetles migrates into a population of green beetles.
A naturally formed solid made of one or more minerals is
a(n) _________
Answers
Describe the relationship between the respiratory and circulatory systems and ATP. Use the term reactants in your response.
Answers
Answer:
Cellular respiration, which generates ATP in your cells, requires oxygen to take place, also, it generates CO2 as a waste product. The respiratory system allows oxygen to diffuse into your blood, and carbon dioxide to diffuse out. The blood then carries the oxygen to the cells, so cellular respiration to continue. When the blood reaches the cells, it also takes the carbon dioxide out of the cells, and carries it to the lungs to get rid of it.
2. Give a reason why earth worms come out of the soil when it has rained.
for wallowing it?
Answers
Explanation:
Oxygen diffuses easily through air, and the soil stays aerobic because oxygen comes in from the surface. But after a rain, the soil pores and the worm burrows fill with water. The worms can't get enough oxygen when the soil is flooded, so they come to the surface to breathe.
Carrots that have been cut into pieces have a shorter
shelf life than whole carrots. Explain this observation
using factors that affect rate of reaction.
Science 10
Answers
HELP PLEASE!!!! IM LEGIT GONNA BEG AT THIS POINT
Answers
Answer:
1) B
2)W
3)B
4) C
Explanation:
What happens at the termination site?
DNA thingz
Answers
Answer:
Termination is the ending of transcription,and occurs when RNA polymerase crosses a stop ( termination) sequence in the gene. The mRNA strand is complete,and it detaches from DNA
Most cells in the human body contain two sex chromosomes. Which type
of cell does not have two sex chromosomes?
Liver cell
Muscle cell
Nerve cell
Red blood cell
Answers
Answer:
liver cell
Explanation:
The liver parenchyma is primarily comprised of hepatocytes. Hepatocytes are polygonal epithelial cells with abundant eosinophilic, granular cytoplasm and large, centrally located round nuclei. Hepatocyte nuclei often contain a prominent nucleolus. Binucleated hepatocytes (= containing two nuclei) are not uncommon.
The atom shown below is
A. likely to form a covalent bond
o B. likely to form an ionic bond
C. not likely to form any bonds
OD. likely to form double bonds
Answers
Answer:
C. Not Likely to form any bonds
Explanation:
Assuming this atom is of neutral charge, it would be neon. We can tell as it has 10 electrons total. 2 in the first shell, 8 in the second. Noble gasses do not form bonds, generally speaking.
Furthermore, any atom, ion or not, that has a full valance (outermost shell) is generally not likely to form bonds.
What is a biodigester?
Pls answer...
Answers
Answer:
A system that biologically digests organic material
A biodigester is a system which biologically digest organic materials..
“The rest is lost largely through metabolic processes as heat.”
How can I word that sentence differently?
pls help
Answers
Answer:
The rest is lost generally through metabolic cycles as warmth.
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Identify details in the text that support sustainable
development goals.
Answers
b.26891
c.5678
hope that helps
2. In order to grow, animals with an exoskeleton must
a. Shed their skin
b. shed their shells
C. continue cell reproduction
d. find larger shells to inhabit.
Answers
a.shed their skin..
Explanation:
Exoskeleton
A true exoskeleton, like that found in arthropods, must be shed (moulted) when it is outgrown. ... The new exoskeleton is still capable of growing to some degree, however. Animals of the order arthropoda, like lizards, amphibians, and many other animals that shed their skin, are indeterminate growers
Which of these is an OPINION about deforestation (not a fact)? *
A. It can cause animals to lose their habitat.
B. it happens because people use wood and lumber.
C. Deforestation destroys important sources of oxygen.
D. It's a serious crisis that our government should try to stop.
PLEASE ANSWRR
Answers
Answer:
D
Explanation:
Answer:
D
Explanation:
Pretty obvious lol