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3 years ago

How big do cells grow

Biology

2 answers:

EastWind [94]3 years ago

8 0

Answer:

i have no clue

Explanation:

ch4aika [34]3 years ago

4 0

The need to be able to pass nutrients and gases into and out of the cell sets a limit on how big cells can be. The larger a cell gets, the more difficult it is for nutrients and gases to move in and out of the cell. As a cell grows, its volume increases more quickly than its surface area.

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This aquifer supplies one-third of the irrigation water in the United States

N76 [4]

<u>ANSWER:</u>

Ogallala aquifer supplies "one-third of the irrigation water" in the United States.

<u>EXPLANATION:</u>

The "Ogallala aquifer" is located in the "Great Plains of the United States" and therefore gives life to almost all fields of the US.

The aquifer supplies water for one-third irrigation needs of the United States. The Ogallala is an underground reservoir and is very big in size and the agriculture production in the US is dependent on this aquifer.

The aquifer is however depleting and water level in many areas has become very low.

It is important for United States to protect and preserve this aquifer so that the agricultural production does not suffer.

8 0

3 years ago

The greenhouse effect refers to what?

podryga [215]

The green house effect refers to gases trapping the heat energy reflected from earth’s surface.

gases trapping heat energy reflected from the earth's surface.

<u>Explanation:</u>

It is the greenhouse effect that made earth a planet that supports life. if there was no green house effect the earth would have been too cold to live on. Sunlight contains rays like UV and infrared.

UV rays being harmful are blocked by the ozone layer in the stratosphere. Infrared rays that enter the earth’s atmosphere are trapped by the greenhouse gases like carbon dioxide, water vapour, methane etc. the trapped infrared rays help in providing warmth.

8 0

3 years ago

The allele combination at a gene locus is known as an organism’s –. The DNA – is then transcribed to produce –, using the DNA as

hjlf

Answer:

<h2>Genotype, sequence, mRNA, cytoplasm, proteins, phenotype</h2>

Explanation:

The allele combination at a gene locus is known as an organism's genotype, which after expression define the phenotype of that organism.

Th sequence of nucleotide in the DNA then transcribed to produce mRNA by RNA polymerase. Then mRNA exported into the cytoplasm and works as template for the synthesis of protein. This protein defines the phenotype of that organism.

4 0

3 years ago

Can someone Help me with this please

Harrizon [31]

Answer:

Explanation:

1> Because meat is more calorically dense than vegetables

2>Sunlight is necessary for plants to grow, and to provide energy to warm the earth's atmosphere. Light intensity controls plant growth. Light duration affects plant flowering and animal/insect habits.

3> The pyramid of biomass can be upright or inverted, but pyramid of energy is always upright.

4 0

3 years ago

6. A scientist measures the circumference of acorns in a population of oak trees

melisa1 [442]

Answer:

6. 2 cm

8. Greater than 2 cm and less than 2 cm

Explanation:

Complete Question

6. A scientist measures the circumference of acorns in a population of oak trees and discovers that the most common circumference is 2 cm. What would you expect the most common circumference(s) to be after 10 generations of stabilizing selection?

-2 cm

-Greater than 2 cm or less than 2 cm

-Greater than 2 cm and less than 2 cm

-Can't tell from the information given

8. Refer to question 6, but this time answer what you would expect after 10

generations of directional selection.

-2 cm

-Greater than 2 cm or less than 2 cm

-Greater than 2 cm and less than 2 cm

-Can't tell from the information given

Solution -

6. In an stabilizing selection, the average trait of a given population is favored over extreme values. Hence, it can be said that one specific trait is over presented in a given population. For example – uniform human birth weight, number of eggs a bird lay etc.

Here in this case if most common circumference is 2 cm , then the tree population will try to have this trait as a stabilizing trait.

Thus, option A is correct

8. In a directional selection, the genetic variation decreases as per the environmental change. And hence the average trait will not be selected. Instead traits either higher or lower the average values will be preferred.

Thus, option C is correct

3 0

3 years ago