BIOLOGY HIGH SCHOOL

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Related Questions

Which of the following is a fertilized egg?a blastula b zygote c blastopore d pseudocolem
A collection of different tissues that work together as a unit to perform a particular function
Probably the main reason Africans, rather than Native Americans, became slaves in America was that? A. Indians passed North American diseases to the Europeans. B. Africans and Europeans shared immunities to Old World diseases. C. Indians were unable to master the work required of slaves. D. Africans were already adapted to slavery.
When true-breeding tall plants are crossed with hybrid tall plants,the offspring are a. all tall plants b. all short plants c. some tall and some short plants d. not enough information has been given to answer this question
In the modern quantum-based atomic theory, what is the name given to a particular space around the nucleus in which an electron moves?

A critical feature of the plasma membrane is that it is selectively permeable. this allows the plasma membrane to regulate transport across cellular boundaries--a function essential to any cell's existence. how does phospholipid structure prevent certain molecules from crossing the plasma membrane freely?

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The structure of the plasma membrane makes it selectively permeable, enabling it to regulate the transport substance into and out of the cell, such as
- small, non polar molecules are hydrophobic
- Polar molecules and ions are hydrophilic
- Polar molecules and ion usually pass with the help of protein

hope this helps

The factor which makes the permeability of the plasma membrane a main reason for the cells existence is that this condition makes the cell a to take in important required substances and throw out waste. Thus, the life of the cell is based the fact that the plasma membrane is selectively permeable.

Further Explanation:

Eukaryotic cells are the cells which have membrane-bound organelles, membrane-bound nucleus, and several chromosomes. They have a true nucleus and have some similarity with prokaryotic cells like plasma membrane, cytoplasm, and ribosomes.

Plasma membrane is selectively permeable as they allow only certain molecule to pass through them. This permeability is dependent on many factors one of them being the need of the molecule by the cell. The membrane of the cell is made up of following components;

1. Phospholipid bilayer

2. Transmembrane proteins

3. Interior protein network

4. Cell surface markers

Out of these components the one responsible for maintaining the movement of the chemicals or molecules across the membrane is the phospholipid bilayer and the transmembrane proteins. The major component which acts as an permeability barrier is the phospholipid bilayer.

Learn more:

1. Learn more about which structure is unique to eukaryotic cells brainly.com/question/4493579

2. Learn more about the purpose of transfer RNA brainly.com/question/236807

3. Learn more about translation brainly.com/question/273550

Answer Details:

Grade: High School

Subject: Biology

Chapter: Cell biology

Keywords:

Eukaryotic cell, DNA, cell membrane, ribosomes, nucleus, plasma membrane, cytoplasm, chromosomes, endoplasmic reticulum, nucleolus, phospholipid bilayer, transmembrane proteins.

In nerve cells the sodium-potassium pump is used to generate gradients of both sodium and potassium ions to propagate electrical signals that travel along nerves. This is a(n) A) example of phagocytosis. B) active transport mechanism. C) passive transport mechanism. D) example of movement with the concentration gradient.

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its b active transport

active transport .................................... B

DO you know a animal with the name that starts with the letter n?

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an animal that starts with the letter n is a narwhal

Newt. NightHawk. Hope i helped

This is a tiny fluid-filled cavity in the cytoplasm. It can be used for storage of biochemicals.

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Answer:

Vacuole.

Explanation:

The cell of the organism is made up of the various cell organelle that together perform the function of living organism. The different cell organelle are mitochondria, vacuole, endoplasmic reticulum and Golgi bodies.

The cytoplasm is the fluid present in living organism. Vacuoles is one of the cell organelle that contains the excess fluid of the organism. Different biochemicals like excess waste, proteins and carbohydrates are stored in the vacuoles. The large vacuoles is present in the plant cell.

Thus, the answer is vacuole.

Vacuole.

Hope this helps!

-Payshence

Hunter is studying for his ecology test. Which fact would least likely show up in his notes?

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Since you didn't give me a choice, I'll explain what ecology is. Ecology is the study of the ecosystem. Therefore, a question likely to be in the notes would be about how organisms interact with each other.

Final answer:

The fact that would least likely show up in Hunter's ecology notes is the history of the microscope.

Explanation:

The fact that would least likely show up in Hunter's ecology notes is the history of the microscope. While understanding the history of scientific instruments is important in the context of science, it is not directly relevant to ecology. Ecology focuses on the study of the interactions between organisms and their environment, including concepts like ecosystems, food chains, and biodiversity.