Which part of the cell is semipermeable, or controls what enters and leaves the cell?

A: mitochondrion
B: cytoplasm
C: endoplasmic reticulum
D: cell membrane

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.

the sun's core creates energy by fusing hydrogen into helium

answer is number 3

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.

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.

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.

Answer:

Vesichles are responsible for storage and transport of material.- c.

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.

Answer:

L2*W2*H1=V2

L4*W4*H2=V32

32/2=16

so your answer is 16 (D.)

(L=Length, W=Width, H= Height, V=Volume)

Brainliest plz :)

i took a test and 16 was wrong, the correct answer is actually 8 because you are doubling the sizes so it would be 4 x 4 x 2. which is 32. if we go back to what thenormal box sizes volume was, its 4. 32/4 is 8 :)

C.8 is your answer.

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.

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

Cardiac muscles

Answer is second choice

Cardiac Muscles why, it’s constantly working and pumping blood

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:

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:

complete question:

What distinguishes bacteria from archaea?

Answer:

a cell wall made up of peptidoglycan

Answer:

hand sanitizer

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.

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%

A + G + C + T = 100% or 1

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.

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.

Answer:

The answer if false

Explanation:

Answer:

false

Explanation:

Im pretty sure its C

Answer:

c

Explanation:

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

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.

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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Answer:

50 %

Explanation:

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.

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.

The answer would be ecosystem

Answer:

ecosystem

Explanation:

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.

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.

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.

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.

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.

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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Answer:

I am pretty sure it is D) fungi

The answer would be fungi