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4 years ago

1.Which term describes the amount of salt in an aquatic biome?

Biology

2 answers:

Alenkasestr [34]4 years ago

8 0

The answear would be d for the frist one

IRISSAK [1]4 years ago

8 0

The first question is Salinity. And the second one is ecosystem, biome, biosphere, organism.

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Juan, a graduate student in an electrophysiology lab, stimulates an isolated neuron grown in a petri dish and measures its actio

Rzqust [24]

Answer: d. it will release chemical messengers.

The action potential, which is an electric pulse, will travel down the axon untill it reaches the synapses. At the synapses, neurotransmitters (chemical messengers) will be released by the neuron.

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4 years ago

What is The law of half diabetes?

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3 years ago

The organic chemicals that help cell membranes to conserve internal fluids are:

guajiro [1.7K]

Answer:

The organic chemicals that helps cell membranes to conserve the internal fluids are phospholipids.

Explanation:

Phospholipids are used to form plasma membrane of the cell. Plasma membrane surrounds the cell contents like various cell organelles, nucleus, ribosomes and proteins. A phospholipid molecules is made up if a polar head containing a phosphate group and the two non-polar tails made of long chains of hydrocarbon of fatty acids.

The another name for plasma membrane is phospholipid bilayer. The polar head is hydrophilic that interactes with polar environment while facing outside the bilayer while the non-polar tail is hydrophobic in nature which makes the internal hydrophobic region of cell membrane which faces inside the bilayer.

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4 years ago

What is likely to happen if a new organism that feeds off mice is introduced?

n200080 [17]

There is a possibility that the population of mice will go way down or even become extinct.

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3 years ago

Cells must use energy to move a substance against a concentration gradient i.e., from a compartment with a low concentration of

garik1379 [7]

Answer:

Transport of sodium ions out of the cell

Transport of potassium into the cells

Transport of calcium ions out of cell

Transport of calcium ions OUT OF the cytoplasm of a cell and INTO an organelle that has a high concentration of calcium ions.

Explanation:

In general the concentration of sodium ion is higher outside the cell in the extracellular fluid and the concentration of potassium ion is higher inside the cell.

During an active transport, a cell uses energy to move molecules against the gradient as a part of primary active transport. In the secondary active transport, the molecules move as per the electrochemical gradient established by the primary active transport.

In primary active transport, sodium ion moves out of the cell and potassium ion moves into the cell through the assistance of sodium potassium pump. In order to maintain the stability, calcium ion from the sarcoplasmic reticulum is pumped out of the cell

Hence , the correct answers are

Transport of sodium ions out of the cell

Transport of potassium into the cells

Transport of calcium ions out of cell

Transport of calcium ions OUT OF the cytoplasm of a cell and INTO an organelle that has a high concentration of calcium ions.

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4 years ago