1
What is the major difference between prokaryotic and
eukaryotic cells?

А
Prokaryotic cells have no genetic material; eukaryotic cells
do

B
Prokaryotic cells engage in photosynthesis; eukaryotic
cells don't

C
Prokaryotic cells have no membranes around their nuclear
material; eukaryotic cells do

D
Prokaryotic cells can move on their own; eukaryotic cells
can't

Answer:

climate and agriculture

Explanation:

for example the coconuts of the pacific warm water islands are far different than the crab apples of the north or how the heat of the south means for less clothes while the brisk of the north requires more layers.

Explanation:

There are several key reasons for high biodervisity in tropical ecosystems. High NPP directly contributes to a diversity by supporting more species with minimum viable populations of each organism increase overall mutation frequency and hence intraspecific genetic varation.

Answer:

jbbbbbbbbbbb

Explanation:

jjjjjjjjjjjjj

Answer:

B i think

Explanation:

Answer:

False.

Explanation:

A solvent is the substance that does the dissolving – it dissolves the solute. In salt solution, water is the solvent. During dissolving, particles of solvent collide with particles of solute. They surround the particles of solute, gradually moving them away until the particles are evenly spread through the solvent.

The molecules are still there.

Answer:

I think it is A

Explanation:

A would be my andwer

Answer and Explanation:

The people within this age range most likely want a baby for themselves/want more babies, or they don't feel like they should have to be limited to the amount of babies they want. Since it is their life and their bodies, they think it is up to them to decide how many to have and whether to have one or not.

#teamtrees #PAW (Plant And Water)

Answer:

I would say true

Explanation:

they do produce 4 different chromosomes

Answer:

true

Explanation:

the are 23 chromosomes in the daughter cell and 46 in the parent cell

The best wave represents ultraviolet rays is Wave B.

Ultraviolet (UV) radiation is a type of non-ionizing radiation that is emitted by the sun and unnatural sources, such as tanning .

Exposure to UV rays can cause early ageing of the skin and signs of sun harm such as creases , leathery skin, liver bumps, actinic keratosis, and solar elastosis.

UV beams can also generate eye pains. They can force the cornea to become inflamed or ignited.\

Thus, the option "B" is correct,  Ultraviolet (UV) radiation is a type of non-ionizing radiation that is emitted by the sun and unnatural sources, such as tanning .

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Answer:

b

Explanation:

Answer:

The answer is D. grasshopper. A primary consumer is one that eats plants.

Answer:

The compaction force may cause the crushing of soil aggregates, which has a negative affect on soil aggregate structure. ... Reduced soil aeration can affect root growth and function, and lead to increased risk of crop disease. All these factors result in increased crop stress and yield loss.

Answer:

The fish would grow in the population, because osprey mainly eat fish.

Because of the fish growth, the ocean, pond, or whatever, makes the water have less oxygen. The fish eat small fish, crustaceans, worms and almost anything that is not poisonous to them. These populations will decrease.

Because there are no Ospreys, the raccoons will get hungry too, as they sometimes eat Osprey eggs.

Answer:

Movement occurs from higher concentration to lower concentration.

Explanation:

Strip A cell has 30% of sugar which is placed in a solution of 10% sugar so the sugar that is present in the potato strip A moves from inside to the outside due to the process of osmosis while on the other hand, if strip B was placed in 50% of sugar solution so the sugar moves inside from outside environment through semi-permeable membrane. This movement occurs due to difference in concentration of both environments i.e. cell and solution.

Two equal strips A and B were from a potato whose cell was 30% of sugar. strip A was placed in a solution of 10% sugar concentration while B was placed in 50%  sugar concentration

a) strip become flaccid and strip B will swell

b) hypotonic solution causes movement of water to diffuse out of cell

Salts and sugars in solution will diffuse away from areas of high concentration into the surrounding solution

Thus, Two equal strips A and B were from a potato whose cell was 30% of sugar. strip A was placed in a solution of 10% sugar concentration while B was placed in 50%  sugar concentration

a) strip become flaccid and strip B will swell

b) hypotonic solution causes movement of water to diffuse out of cell

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Answer:

"Manganese is a grey-white, hard and very brittle metal.

It tarnished on exposure to air and oxidized to manganese when heated."

Credits to: Yahoo

Answer:

Manganese is a pinkish-gray, chemically active element. It is a hard metal and is very brittle. It is hard to melt, but easily oxidized. Manganese is reactive when pure, and as a powder it will burn in oxygen, it reacts with water (it rusts like iron) and dissolves in dilute acids.

Explanation:

Answer:

C

Explanation:

Answer:

B

Explanation:

B

Explanation:

because it deals with the cellection biological data of all organism in environment

Answer:

Natural selection leads to evolution due to the way reproduction works. In the example of European moths during the industrial revolution, we can see this clearly. When the industrial revolution was going, there was more pollution, hence darkening the skies and leaving ash. Moths, which before were white with occasional black spots dominated the area until pollution effected their environment. Whiter moths were eaten by bird who could easily see them against the black trees and skies. These moths could no longer reproduce, they were dead. Moths with more black could survive longer to reproduce because they were harder to see. As time went along, the moths turned mostly black, showing an example of evolution.

This method  of natural selectionthat the fantastic alleles of this variation organism are surpassed directly to offspring, the system of  natural selection results in evolution occurring.

Natural selection is the system thru which populations of residing organisms adapt and extrade. Individuals in a populace are evidently variable, which means that they're all one of a kind in a few ways.

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Answer:

b.

Explanation:

They showed that organic molecules could be formed from materials nypothesized to be available in the Earth's early atmosphere.

The Miller-Urey experiment tested the hypothesis that life, or more precisely organic molecules, might have arisen by nothing more than straightforward chemical processes by simulating the conditions on the early Earth.

Miller's result confirmed A.I. Oparin's theoretical hypotheses, and it is regarded as the standard experiment looking into the hypothesis of abiogenesis.

The Miller-Urey experiment was the first attempt to investigate theories regarding the beginning of life experimentally. Stanley Miller recreated circumstances that were supposedly typical on the early Earth.

Therefore, They showed that organic molecules could be formed from materials nypothesized to be available in the Earth's early atmosphere.

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Answer: biologists are a type of scientist that use dichotomous.

The Type of scientists that uses dichotomous key is : Biologist

A lot of scientists make use of the Dichotomous key for identifying unknown biological organisms like Biologists. A dichotomous key consists of a set of choices, with each choice consisting of two statements, these statements makes it possible to name an unknown biological organism.

A dichotomous key is a simply method used for the identification of organisms ( groups of unknown organisms are repeatedly divided into two groups to get more information about the organism )

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Answer:

The contents of the cell, or the structures of the cell, allow the cell to be "specialized". Together with the cell's proteins, they allow the cell to do specific things. They allow a cell to act like a neuron or a bone cell or a skin cell.

Explanation:

Answer:

The enzyme's activity will be altered

Explanation:

Genes are unit of hereditary that carries genetic information needed for the survival of the cell and organism at large. Genes are expressed via transcription and translation processes to produce a protein, which is responsible for the physical traits we can see (phenotype).

Since ENZYMES that catalyze biochemical reactions in living cells are proteinous in nature i.e. are made up of proteins, this means that they are formed from the expression of genes. Hence, if the gene encoding the production of an enzyme is altered or changed due to mutation, then the activity of the resulting enzyme will also be altered (most times non-functional).

Answer: cristae greatly increase the surface area of the inner membrane on which the above-mentioned reactions may take place. A widely accepted hypothesis for the function of the cristae is that the high surface area allows an increased capacity for ATP

Explanation:

Watershed is like where rainwater gathers to then be drained off into like a pond or river.

Surface Water is just water in like lakes and ponds while ground water is underneath the surface of the Earth.

Best of luck!

Answer:

variation in a population exists

Explanation:

Variation is present in a population of antelopes so due to this variation, the predator such as lion can catch the slowest antelope that is present in the population while on the other hand, the faster antelopes can save their lives by running very fast. Variation is present in a population of antelopes due to availability of food as well as genetic characteristics. These variation leads to the availability of food to the lions.