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3 years ago

Please help me ASAP I’m kinda irritated lol

Biology

1 answer:

Yuliya22 [10]3 years ago

8 0

<h2><u>PLEASE MARK BRAINLIEST!</u></h2>

Answer:

Your answer is...

Explanation:

<h3>A) They have one cotyledon.</h3><h3>D) They have parallel veins.</h3><h3>E) They have petals in multiples of three.</h3>

I am not sure if E) is correct or not, but I know that A) and D) are most definitely correct!

I hope this helps!

- sincerelynini

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Which is most likely an effect of the evolution of a larger brain in humans

Ilya [14]

Brain can process and store lot of information. Large brains means large heads, which makes childbirth more difficult and painful for human mothers.

Explanation:

A larger brain provides better performance. human brain size increases rapidly. Human brains are larger, more complex brains which enabled humans of this time period to interact with each other and with their surroundings in different ways.

The prefrontal cortex is slightly a larger part in the human brain. Humans have the largest cerebral cortex. It is a sheet of brain cells that folds itself multiple times in order to fit inside the skull. It enables us to process everything we see and hear and think.

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3 years ago

Life would not be possible on earth without the water that covers much of its surface and the air that surrounds it, earth water

JulsSmile [24]

Well the hydrosphere is all the waters on the earth's surface, such as lakes and seas, and sometimes including water over the earth's surface, such as clouds. The Atmosphere is the envelope of gases surrounding the earth or another planet. So i'm going to go with D, Evaporation from the lakes and rivers.

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4 years ago

What would happen if u place a cell in a container of water with high solute concentration?

Dmitriy789 [7]

Answer:

Large quantities of water molecules constantly move across cell membranes by simple diffusion, often facilitated by movement through membrane proteins, including aquaporins. In general, net movement of water into or out of cells is negligible. For example, it has been estimated that an amount of water equivalent to roughly 100 times the volume of the cell diffuses across the red blood cell membrane every second; the cell doesn't lose or gain water because equal amounts go in and out. There are, however, many cases in which net flow of water occurs across cell membranes and sheets of cells. An example of great importance to you is the secretion of and absorption of water in your small intestine. In such situations, water still moves across membranes by simple diffusion, but the process is important enough to warrant a distinct name - osmosis.

4 0

3 years ago

4. What genotypes of parents will have only white-fur offspring? Parent 1 genotype = Parent 2 genotype = What genotypes of paren

AnnZ [28]

Answer:

All white offspring: Parent 1 genotype = homozygous dominant

Parent 2 genotype = homozygous/heterozygous dominant

For all black offspring: Parent 1 genotype = homozygous recessive

Parent 2 genotype = homozygous recessive

Explanation:

The cross was between a white mouse and a black mouse and the phenotypic ratio of the resulting offspring is 50% white and 50% black.

Assuming that fur color in the mouse is represented by the allele A (a), In order to give 1:1 phenotypic ratio of the offspring, it means the white mouse is heterozygous with Aa genotype and the black mouse is homozygous with aa genotype. Also, it means that the allele A is dominant over the allele a.

Aa x aa

Aa Aa aa aa

Aa = white

aa = black

Ratio of white to black = 50/50 or 1:1

Hence, in order for a cross to yield only white offspring, the parents can either be homozygous AA and AA or one will be homozygous AA and the other will be heterozygous Aa.

1. AA x AA

AA AA AA AA (all white offspring)

2. AA x Aa

AA Aa AA Aa (all white offspring).

In order to produce only black offspring, both parents must be homozygous aa.

aa x aa

aa aa aa aa (all black offspring)

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4 years ago

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Leni [432]

hola, podemos ser amigos?

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3 years ago