The major function of the cell membrane is to provide a barrier around the cell, control substance movement via its selective permeability, and facilitate cell communication, making option B ('To receive and send messages between cells') the best answer. Hence the correct option is B.
The cell membrane's structure, primarily made of a phospholipid bilayer, allows it to be selectively permeable, controlling which substances can enter and leave the cell. It is involved in various functions including protecting and supporting the cell, and actively participating in the transport of materials. It also has the important role of facilitating communication and signal transduction, which means option B, 'To receive and send messages between cells,' best describes a major function of the cell membrane. It's also worth noting that the cell membrane encloses the cytoplasm and houses membrane proteins which may vary from one cell type to another, contributing to the diverse functions of the cell membrane in different cellular environments. However, while it does provide some support, option B is a more encompassing choice that includes this function as part of its role in cellular communication and interaction.
What distinguishes bacteria from archaea
Answer:
Archaean cell walls are made up of different compounds than are bacterial cell walls.
Explanation:
I'm doing PBS Learning right now, and this is the correct answer.
Bacteria and archaea differ mainly in cell wall composition, membrane lipids, and genetic material, with bacteria containing peptidoglycan and archaea using pseudopеptidoglycan.
Bacteria and archaea are both unicellular prokaryotic organisms but have several distinguishing characteristics:
Cell Wall Composition: Bacterial cell walls contain peptidoglycan whereas archaeal cell walls do not. Instead, archaea have a substance called pseudopеptidoglycan.Membrane Lipids: Bacteria have ester-linked membrane lipids, while archaea have ether-linked membrane lipids, which can withstand extreme environments.Genetic Material: Although both have circular chromosomes, their genetic sequences differ significantly. Archaea's genetic machinery resembles eukaryotes more than bacteria.complete question:
What distinguishes bacteria from archaea?
the sun's core ____
1) is made is soild helium
2) makes up most of the sun's size
3) creates energy by fusing hydrogen into helium
4) absorbs energy from the convection zone
the sun's core creates energy by fusing hydrogen into helium
answer is number 3
A problem caused by the overuse of fertilizer that results in algal blooms like this is known as
A) red tides
B) decomposition
C) eutrophication
D) nutrient upload
C) Eutrophication is the answer
Have a Nice Day! :)
Answer:
The Answer is C. Entophication
Explanation:
Eutrophication is the process where water bodies receive excess nutrients that stimulate excessive plant growth.
How do meteorologists use isotherms and isobars?
A. To identity high- and low-pressure systems
B. To identify areas of high and low water vapor
C. To differentiate between seasons
D. To provide estimates for the amount of direct sunlight received
Answer:
A. To identity high- and low-pressure systems
Explanation:
Isobars are similar to the level lines on a topographic map, showing areas of similar pressure, they are also drawn in circles to represent the areas of similar air pressure over a geographical map.
Isotherms are usually displayed in color showing areas over a map that have the same temperature or are covered by a similar temperature system (heat or cold front for example).
Both are used in electronic media mostly (although in print in newspapers too), over a geographic map to position the systems.
Hemophilia, Down syndrome, sickle-cell anemia, and cystic fibrosis are all examples of diseases that are
Answer:
Genetic Disorders?
Explanation:
Answer:
inherited from parents
Explanation:
study island
What product is harvested from trees
Answer: Maple syrup, sap/resin, chlorophyll.
Explanation: All three of these products can naturally be found in the trunk/leaves of a tree. However, if you are looking for products made from trees, here is a list:
Wine Cork
Natural Aspirin and Acne Medication.
Sponges
Chewing Gum
Carnauba Wax
Henna Dye
Rubber
Paper
If you need more, please notify me.
What are the dated fossils called that help scientists to identify or date rocks or fossils?
Answer:
Index fossils
Explanation:
The index fossils are the fossils that come in very handy for the geologists when it comes to identifying or dating rock samples or other fossils. The reason for this is that the index fossils have already been dated. They are fossils that are very commonly found, wide dispersed, are easy to be identified, and are limited to only a certain geological period. These characteristics make them an excellent indicator for the dating of the rock layers in which they are found, or the fossils found in the same layers with them, without conducting further examinations.
what is the study of fossils and past life called.
That is called paleontology
Hope this helped!
~Just a girl in love with Shawn Mendes
Answer:
she is right it's paleontology
Explanation:
hopefully this will help
One possible form of a gene that codes for a particular trait is known as ______.
Answer:
Allele
Explanation:
A gene is a stretch of DNA that code for a specific protein. A gene can exist as two or more alternative forms. These alternative forms of a gene are called as alleles. The alleles are responsible for presence of variants of a particular genetic trait.
For example: The gene for plant height has two possible forms, i.e. two alleles. These are symbolized as "T" and "t". The allele "T" impart tallness while allele "t" imparts dwarfism to the plants.
Which level of biodiversity involves the variations within multiple populations across an area? ) A)genetic
B)species.
c)ecosystem
The answer would be ecosystem
Answer:
ecosystem
Explanation:
NEED HELP ASAP! WILL GIVE BRAINLIEST
The allele for a widow’s peak has complete dominance over the allele for a straight hairline (w). What is the probability of a man with a straight hairline (ww) and a woman with a widow’s peak (WW) having an offspring without a widow’s peak?
A) 0 percent
B) 75 percent
C) 50 percent
Answer:
50 %
Explanation:
An atom has a proton mass of 35, a neutron mass of 35, and an electron mass of 3. What is the estimated mass of the atom.
Answer: Answer choice B . 70 (35 protons + 35 neutrons)
Explanation:
Answer:
The estimated mass of the atom is 70 amu
Explanation:
An atom has a proton mass of 35, a neutron mass of 35, and an electron mass of 3.
Mass of an atom is equal to the sum of number of protons and number of neutrons.
In this case, number of protons p = 35
Number of neutron n = 35
So, the estimated mass of the atom will be :
[tex]M=35\ protons+35\ neutrons=70\ amu[/tex]
Hence, this is the required solution.
The universe expanding can be compared to:
A. Cooking pudding on the stove
B. Chocolate chips baking in cookies
C. Simmering soup on the stove
D. Peanut butter cooking baking
i think the answer is b
The best analogy for the universe's expansion is chocolate chips baking in cookies. This is because as the dough expands when heated, the chips (galaxies) move further apart just like the galaxies in the universe are moving farther apart as the universe expands. It aligns with the Big Bang Theory and the cosmological principle.
Explanation:The expansion of the universe can be compared to chocolate chips baking in cookies (B). Imagine that each chocolate chip is a galaxy. As the cookie dough is heated, it expands and the chips (or galaxies) move apart from each other, much like how galaxies in our universe are moving away from each other as the universe expands.
This concept is based on the Big Bang Theory and the associated metric expansion of space, where the scale of space itself changes. This comparison helps us to understand the cosmological principle, which states that the universe, when viewed at a sufficiently large scale, looks the same no matter where you are observing from.
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Scurvy is a disease that results from a vitamin C deficiency. In the past, scurvy frequently affected sailors because they were unable to keep supplies of fresh fruit while at sea.
Given this information, it is possible to conclude that scurvy is a disease that is primarily caused by
A.
poor nutrition.
B.
organ malfunction.
C.
inheritance.
D.
toxic substances.
I’m pretty confident that it’s A
Answer:
A. poor nutrition.
Explanation:
According to the information provided, it can be inferred that scurvy is treated by a deficiency in the consumption of vitamin C, which is mainly found in fruits such as guava, lemon. and the orange.
Vitamin C cannot be synthesized by humans, so it must be taken as it is necessary in cellular processes
What is one way a plain can form
Answer:
The plains can be formed in several ways, one of them is given by the accumulation of Sediments that have been attracted by the wind or the sea over the years, although it can also be due to the accumulation of Lava that has been deposited forming several layers of it and resulting in a large area of land.
Scientists notice structural similarities between fossils of a land animal and aquatic organisms they know the similarities are not a result of the two organisms having to adapt to similar environments. What can they attribute the structural similarities to ?
Answer: The correct answer is:
___________________________________________________
"common ancestry" .
___________________________________________________
{Note: The following answer choices would be "incorrect" :
1) " convergent evolution " ;
2) " transitional evolutions " ;
3) " similar mating habits " .}.
___________________________________________________
Hope this helps!
Best wishes!
___________________________________________________
Answer:
The scientists can attribute structural similarities to common ancestry.
Explanation:
In evolutionary biology, common ancestry or common descent illustrates how an array of species share a most contemporary communal ancestor. There is a huge proof of common ancestry of all forms of life on Earth. The common ancestry in between the organisms of various species originates at the time of speciation, in which establishment of new species occurs from a single ancestral population.
PLEASE HELP FAST
Choose all the right answers.
Plant food made by photosynthesis consists of:
A) sugar
B) chlorophyll
C) starches
D) carbon dioxide
Answer:
A) sugar
C) starches
Explanation:
Sugar is produced in the form of glucose
Glucose is used to make cellulose fibers, the structural component of the plant, or is stored in the form of starch granules
Plant food made by photosynthesis consists of sugar and starches, which are produced by plants from glucose. Chlorophyll is involved in capturing light, not a product. Carbon dioxide is a reactant, not a product of the process.
Explanation:During photosynthesis, plants manufacture food primarily in the form of glucose, which is a type of sugar. This sugar is later used by the plant to produce various organic materials, such as starches, which are also products of photosynthesis and are stored for later use. However, chlorophyll is a pigment involved in the capture of light energy and is not a product of photosynthesis. Moreover, carbon dioxide is a reactant in the photosynthetic process, not a product. Therefore, the correct answers indicating plant food made by photosynthesis are A) sugar and C) starches.
The plant food made by photosynthesis consists of sugar, starches, and oxygen. During photosynthesis, plants use the energy from sunlight to combine carbon dioxide and water, resulting in the production of glucose (a sugar) and oxygen. Glucose can be further converted into starch for storage.
Which statement about human population growth is least likely to be correct
Answer:
Technological advances in farming and medicine will allow human populations to continue to grow without natural limits.
Explanation:
Technological advances in farming and medicine will allow human populations to continue to grow without natural limits. Thus, the correct option is C.
What is Human population growth?Population growth is the increase in the total number of humans on the Earth. For most of the human history, the population size was relatively stable for time. But with the innovation and industrialization, energy, food, water, and the medical care became more available and reliable.
The logistics population growth has been represented through the help of the logistic growth curve on a line graph and the shape of the curve is a S-shaped curve which represents slow increase, and rapid growth in the population and after which there has been reduction in the growth.
The best example of the logistics growth has been observed in the wild population which has been included in the sheep as well as harbor seals. In both of the cases, the number of population increases and the carrying capacity for small period of time.
Therefore, the correct option is C.
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Your question is incomplete, most probably the complete question is:
Which statement about human population growth is LEAST likely to be correct?
A) Worldwide, humans are reproducing more quickly than mortality is removing people from the population.
B) Advances in agriculture have allowed the world's food supply to expand dramatically in the last 100 years.
C) Technological advances in farming and medicine will allow human populations to continue to grow without natural limits.
D) Modern medicine has allowed human populations to extend well past the earth's carrying capacity, as more people survive for longer.
One difference between the cells in a human body and bacterial cells is that bacterial cells have
Answer:
a cell wall made up of peptidoglycan
Which of the following accurately describes monosomy?
2n
2n+1
2n-1
n-1
Answer:
n-1 would be the answer :)
Explanation:
Answer:
Monosomy could be descrided as 2n-1
Explanation:
Monosomy is the lack of one member of a chromosome pair. It is as a result of nondisjunction during meiosis. When this happens, one gamete shows monosomy, and the other shows trisomy of the same chromosome.
A diploid cells (2n) is characterized by the presence of two copies of each chromosome versus haploid cells (n). Therefore, monosomy could be descrided as 2n-1.
Which characteristic is expected of a mineral that crystallizes from lava at Earth’s surface
Answer:
Small crystals mark me brainiest
Explanation:
i would've passed if he gave me the right answer
A discerning characteristic expected of a mineral that crystallizes from lava at Earth’s surface is that it becomes an igneous rock, like basalt or potentially an amorphous solid like glassy silica if the cooling process is rapid.
Explanation:A characteristic expected of a mineral that crystallizes from lava at Earth’s surface is that it forms an igneous rock. A perfect example of this is basalt, which is produced by the cooling of lava and comprises most of Earth's oceanic crust. If the cooling process is rapid, as with molten silicon dioxide (SiO₂), it can yield an amorphous solid (non-crystalline), known as 'fused silica' or glassy silica.
Basaltic rock is marked by holes left by gas bubbles, a distinctive feature of rock formed from lava. In the case of silicon dioxide, when it cools off from a liquid state, it usually becomes supercooled and turns into a glass, a state characterized by the random arrangement of SiO₄ tetrahedra. This material is highly resistant to rapid temperature changes, which is why it does not fracture easily.
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the rock record indicates that photosynthesis began on earth about 3.5 million years ago. true or false
Answer:
The answer if false
Explanation:
Answer:
false
Explanation:
an organism is found that has the follow traits:
relies on plants for nutrients,
absorbs nutrients through filaments,
lives in a moist environment.
what kingdom dose this organism most likely belong in?
A. protista
B. plantae
C. animalia
D. fungi
-apex
Answer:
I am pretty sure it is D) fungi
The answer would be fungi
how would you make clear the importance of avoiding bacterial infection to a patient with leukemia who has an elevated white blood cell count
Answer:
hand sanitizer
Which of these statements correctly explains the process of differentiation? A. Differentiation converts a small ball of different type of cells into a multicellular, nonfunctional, well-organized organism. B. Differentiation converts a small ball of similar kinds of cell into a multicellular, multifunctional, well-organized organism. C. Differentiation converts a single cell into a mass of similar type, multifunctional cells.
Answer:
B
Explanation:
An undifferentiated cell is such as that in a blastocyte. They are multipotent and can differentiate into any type of cells. The cells of the mass begin to have their gene differentially expressed (due to differential silencing of particular genes) hence the cell become determined. They become well organized into tissue such as skin and other organs.
B. Differentiation converts a small ball of similar kinds of cell into a multicellular, multifunctional, well-organized organism.
Explanation - Differentiated cells are the cells that are bound to play out a particular capacity in the body i.e., they have turned out to be specific. These cells don't be able to change to play out another capacity.
During cell separation, the phone experiences an adjustment in quality articulation. So as to play out its capacity, the cell produces explicit proteins. Case of a separated cell is the liver cell, platelet, and so on.
Fossils of snakes with hind limbs but no forelimbs
have been discovered. Which of the following
conclusions is best supported by this fossil
evidence?
A Snakes are likely to evolve limbs in the future.
B Snakes are well adapted to live on land without
limbs.
C Snakes have evolved from an ancestral reptile
with limbs.
D Snakes are poor competitors compared to
reptiles with limbs.
C
The fossil was not of a snake but rather an ancestor of the snakes. The ancestor had short hind legs and gradually, over time, lost them to suit its needs in its particular environment.
Answer:b
Explanation:
The process in which plants draw water from their roots to their leaves where it evaporates into the atmosphere is called ____________.
A .evaporation
B. condensation
C. precipitation
D. transpiration
Why is transpiration important for plants?
A. It allows the plant to breathe.
B. It keeps the plant exercised.
C. It keeps plants from getting too dry
D. It helps to regulate their temperature.
Plants control transpiration by opening and closing their _________, which are similar to your ____________ when you perspire
A. leaves; skin
B. stomata; pores
C. flowers; hands
D. capillaries; veins
Answer:
1.D
2.C
3.B
Explanation:
hope this helps
Answer:
1. D
2. D
3. B
Explanation:
The only possible answer for the first question is transpiration because precipitation is essentially rain (and all its forms), condensation is the collection of water, and evaporation is simply water in gas form -- thus making D the "odd one out".
For the second question, we know that transpiration is heavily dependent on stomata/guard cells. Exercise has nothing to do with this topic, and transpiration has very little to do with dryness (which makes B and C incorrect). Finally, plants do NOT breathe through transpiration. Instead, they breathe through plant (cellular) respiration (which eliminates A, leaving only D).
For the third question, we know that stomata/guard cells control a variety of cellular (and extracellular) activities in plants. When the stomata are closed, rates of transpiration decrease due to the inability of water to escape. When they are open, however, rates of transpiration increase and the plant loses more water. The most similar thing to that in the human body would have to be our pores, which open and close in response to stimuli (they release sweat when we're too hot, trigger the production of oils in our skin, etcetera). The other choices do not make much sense; for example, capillaries are used for distributing and receiving supplements from the soil and do not control transpiration.
Use logical reasoning and remember that stomata/guard cells control gas exchange and water loss. I recommend watching Hank Green's videos on plants if you are truly confused.
I hope I helped! :)
If you need me to explain the prompts in further detail, just send me a message and I will gladly elaborate on my responses.
vesichles are responsible for
a. synthesis
b. formation of DNA
c. storage and transport of matariel
d. cell growth
please help
Answer:
Vesichles are responsible for storage and transport of material.- c.
If 30% of the bases in a particular DNA molecule are guanine(G), what percentage of the bases would be thymine(T)? Explain your reasoning.
Since 30% of the bases are guanine, we know that 30% must also be cytosine (because it pairs with guanine in DNA).
Knowing this, we have figured out 60% out of 100%, leaving us with 40%.
Thymine pairs with Adenine, so Thymine and Adenine each make up 20% of the remaining 40% of the DNA in this example.
In total:
Guanine: 30%
Thymine: 20%
Cytosine: 30%
Adenine: 20%
Percentage of thymine will be 20%
Deoxyribonucleic acid (DNA) is a double stranded molecule and one of the two types of nucleic acids. It is made up of nucleotides subunit namely: Adenine (A), Guanine (G), Cytosine (C) and Thymine (T).Adenine (A) pairs with Thymine (T) while Guanine (G) pairs with Cytosine (C) in the DNA molecule. According to Chargaff in his rule, the amount of all four bases equals to 1 i.e.A + G + C + T = 100% or 1
In a DNA molecule, Adenine = Thymine and Guanine = Cytosine. This means that the amount of adenine and thymine is equal and the same goes for cytosine and guanine. According to this question, If 30% of the bases in a particular DNA molecule are guanine(G). This means that the percentage of its pair (Cytosine) will also be 30%.That is;
A = T + G = C = 100%
A + T + (30 + 30) = 100
A + T + 60 = 100
A + T = 40
T = 40/2 = 20%
Hence, the percentage of thymine and adenine will be 20% each.
How would an upwelling current increase the abundance of aquatic organisms?
A) upwelling brings cold, nutrient poor water to the surface, which would decrease the abundance of aquatic organisms.
B) upwelling brings cold, nutrient-rich water to the surface, which allows for an increase in aquatic organisms.
C) upwelling brings warm, nutrient-rich water to the surface, which allows for an increase in aquatic organisms.
D) upwelling brings warm, nutrient-rich water to the surface, which would decrease the abundance of aquatic organisms.
Answer:
upwelling brings cold, nutrient-rich water to the surface, which allows for an increase in aquatic organisms.
Explanation:
Brainliest please
Answer: Option B
Explanation:
Upwelling can be defined as an oceanographic phenomenon in which wind driven motion of dense, nutrient rich, cooler water moves towards the surface of ocean which replaces the nutrient deficient water is replaced.
The nutrient rich water helps in the increasing the growth of the aquatic organism in water.
The nutrient in water allows the plankton to make food at the surface and food is eaten by other organism which helps in a healthier population.