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2 years ago

__________ are a class of membrane proteins that increase a cell's permeability to certain ions.

1 answer:

3 0

2. Ionophores because they are class of proteins that move cell membranes. They are small, hydrophobic molecules that increase a cell's permeability to certain ions.

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Enzymes are ___? A.fats b.acids c. Sugars d.proteins

UkoKoshka [18]

The answer is D) proteins

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2 years ago

which of the following best describes how the potential is affected by the structural change in the gene?

mars1129 [50]

Answer:

A gene mutation is a permanent alteration in the DNA sequence that makes up a gene, such that the sequence differs from what is found in most people. Mutations range in size; they can affect anywhere from a single DNA building block (base pair) to a large segment of a chromosome that includes multiple genes.

Explanation: did the test and got it right

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2 years ago

The job of the cell membrane is to ___________________ what enters and exits the cell.

vlabodo [156]

Answer:

The cell membrane is just like the other organelles of cells in that it serves the cell by having its own specialized jobs. One of its jobs is to control what enters and exits the cell and thereby to protect the cell.

Explanation:

Hope this helped!

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1 year ago

What happens to a star when it becomes a red giant?

alexandr1967 [171]

What specifically happens to the star depends entirely upon its size. If it's small for example it will contract into a white dwarf star.

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2 years ago

Read 2 more answers

These periodic changes on Earth are a result of the five major history that have occurred throughout Earth's

shepuryov [24]

Changes sea level by 100 meters

Exposure of continental shelf

Changes in continental shelf composition

Mass extinctions of species in certain areas

Changes in the water cycle

Changes in landscape

Changes in topsoil characteristics

Answer:

A. Ice Ages

Explanation:

These periodic changes on Earth are a result of the five major ICE AGES that have occurred throughout Earth's history

The five major Ice Ages that throughout the Earth's history we're the following:

1. the Huronian: this occurred around 2.4 billion years ago

2. Cryogenian: this followed Huronian age, and it occurred around the period of 850 million years

3. Agondean-Saharan: this major ice age occur around 460 million years ago.

4. Karoo this is a period of about 360 million years

5. Quaternary is the present age, and it has been in existence since about 2.6 million years ago till the moment

Hence, in this case, the correct answer is Ice Ages

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2 years ago