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3 years ago

Which statement best describes beaches?

Biology

2 answers:

anastassius [24]3 years ago

5 0

Answer:Beaches are always changing due to factors such as waves adding and eroding sand.

12345 [234]3 years ago

5 0

Answer:Beaches are always changing due to factors such as waves adding and eroding sand.

Explanation:

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If an organism with the genotype AaBb produces gametes, what proportion of the gametes would be Bb? 3/4 None 1/2 1/4

Talja [164]

Are u using a punnet square for children or for genotypes

4 0

3 years ago

Read 2 more answers

1. The cells in our bodies are surrounded by these types of solutions.

Ksenya-84 [330]

Answer:

1. The cells in our bodies are surrounded by these types of solutions. → Isotonic solution.

3. When an animal cell is places in this solution, it will burst (get layer) → Hypotonic solution.

4. When an animal cell is placed in this solution, it will shrivel or shrink (get smaller) → Hypertonic solution.

5. This is a solution with more solute than the cell. Hypertonic solution.

Explanation:

The cells in the body are in a balance of substances —concentration of solutes— between their cytoplasm and the extracellular space. This balance is dynamic in living beings, due to the constant exchange of ions and substances between the intracellular and extracellular space. For this reason, the extracellular medium is isotonic with the cytoplasm.

A cell can lose or gain water depending on the amount of solutes that a medium has in which it is found, with respect to the cytoplasm. This difference in solutes concentrations produces an osmotic gradient that drags water from the least concentrated solution to the most concentrated, through the process of osmosis, which seeks to achieve an equilibrium of concentrations.

When a animal cell is exposed to a hypertonic solution —with a higher concentration of solutes— it loses water and tends to dehydrate and become smaller.
An animal cell in a hypotonic solution receives water, so it can expand and even burst.

In practice, the concentrations of intracellular and extracellular solutes depend not only on the osmotic gradient, but also on the concentration gradient of substances.

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3 years ago

The cholera toxin causes intestinal cells to pump out their chloride ions

xz_007 [3.2K]

Answer: This bacterium can survive passage through the acidic conditions of the stomach. Inside the small intestine, V. cholerae attaches to the intestinal wall and starts producing cholera toxin. The toxin enters intestinal cells, causing them to release water and ions, including sodium and chloride ions.

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3 years ago

Explain how surface water is able to form on permafrosts able to form on permafrost

Lina20 [59]

<h2>explain how surface water is able to form on permafrosts able to form on permafrost</h2>

Just as a puddle of water freezes on a frigid winter night, water that is trapped in sediment, soil, and the cracks, crevices, and pores of rocks turns to ice when ground temperatures drop below 32°F (0°C).

hope it helps

#carry on learning

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3 years ago

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The visual cliff is a laboratory device for testing ________ in infants.

STALIN [3.7K]

The visual cliff is a laboratory device for testing depth perception in infants. This device is basically an apparatus that resembles a cliff, on top of which a child is placed so as to check its perception of depth from the cliff to the bottom of it. This is important so as to check whether the child has visual or motor problems.

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3 years ago