Please explain how treadmilling contributes to actin-based motility in crawling cells. Be specific in why both actin filament growth and shrinkage are necessary.

Answers

Answer 1

Answer: Action needs ATP. ATP is the coenzyme, which is used by the cells to transfer energy to the cell when a muscle cell demands energy to contract. ATP is short for Adenosine Triphosphate and is critical for muscles to contract. APT prepares the myosin to bind with actin - it moves the myosin to a high energy state ready to move. The myosin is the protein that converts the chemical energy, ATP, into mechanical energy. This cycle keeps on repeating itself and the muscle expands and contracts.

Related Questions

Why is carbon important
The human body does not constantly lose water through _______.
Which of the following is not a physical property of iron? conductivity ability to rust color melting point
Determine why DNA needs to replicate before a cell divides.
a human skin cell contains 46 chromosomes. A frog sprem cell conrains 12 chromosomes. which paie of number of a normal gamete from each of these species

Which kingdom is known to contain organisms that have cells with no cell walls?

Answers

The answer is that the Animal kingdom's organisms have cells with no cell walls. The cell wall of Prokaryotes is murein, the cell wall of some Protoctists is polysaccharide, the cell wall of Fungi is chitin, the cell wlall of plants is cellulose, and the cells of animals do not have cell walls.

Final answer:

The kingdom Animalia, which belongs to the Eukarya domain, is known for having organisms with cells that do not have cell walls. Other kingdoms, like Plantae and Fungi, typically have cell walls.

Explanation:

The kingdom known for containing organisms with cells that lack cell walls is the Animalia kingdom which exists within the Eukarya domain. In the classification of life, three main domains exist: Bacteria, Archaea, and Eukarya. The first two mainly include prokaryotic organisms which usually have cell walls. The Eukarya domain includes four kingdoms: Animalia, Plantae, Fungi, and Protista. Among these, it's typical for Plantae and Fungi to exhibit cell walls. Conversely, Animalia comprised of animals, do not have cell walls surrounding their cells. Their cells are surrounded by a plasma membrane which offers flexibility and aids in movement and interaction with the environment. This characteristic is one of the key distinguishers of the Animalia kingdom from other kingdoms.

Learn more about Kingdoms and cell walls here:

brainly.com/question/22034051

#SPJ12

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?

Answers

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.

Angiosperms are flowering plants. The carpal is a reproductive organ within the flower. What part of the carpal becomes the fruit when fertilization occurs?

Answers

The answer is an ovary.

The carpal is the female part of a flower and it consists of the style, stigma, and ovary. After pollen lands on the stigma, pollen tube begins to grow until it reaches an ovule which is inside the ovary. A nucleus of pollen will fuse with a nucleus of the ovule and that fertilization will occur. A fertilized ovule becomes seeds surrounded by the ovary which matures and becomes the fruit.

Angiosperms are flowering plants. The carpal is a reproductive organ within the flower. The carpal is the female organ at the center of the flower and it consists of the ovary, style, and stigma. The ovary is the lower part of the pistil that ripens into a fruit and it consists of the ovule.

I hope it helps, Regards.

Michael wants to classify an organism that she is studying in Lab the organism is multicellular and makes it on food and is unable to move around it’s environment the organism that Michael studying can mostly like likely be classified in kingdom

Answers

Thanks for the points hard question

Biology and geology are two very different sciences, but biologists and geologists use scientific knowledge in the same way. These scientists both use scientific knowledge to_______. A. answer questions and solve problems affecting the natural world. B.investigate the chemical composition of the Earth’s different layers. C.observe and classify living organisms into groups. D.explain the rituals and traditions of human cultures.

Answers

The question is asking us to continue the sentence in: Biology and geology are two very different sciences, but biologists and geologists use scientific knowledge in the same way. These scientists both use scientific knowledge to... First, Geologists don't work with humans specifically, so we can reject answer D) Similarly, we reject answer B because it's only geologists who investigate Earth's different layers. Option C is again only true for one of the groups: the biologists! So the correct answer is A. answer questions and solve problems affecting the natural world.

The answer is A 5 stars and thanks plss.......

Collin is conducting a study about chimpanzee communication methods. Which of the following note excerpts from his recent trip to the zoo would be good to include in his study?a.
Male chimpanzee sleeping in tree for an hour
b.
Baby chimpanzee playing in tree branches for an hour
c.
Female chimpanzee walks away when male chimpanzee approaches
d.
Male chimpanzee eats bananas rather than vegetables during feeding time

Answers

"Female chimpanzee walks away when male chimpanzee approaches" is the one note excerpt from his recent trip to the zoo among the following choices given in the question that would be good to include in his study. The correct option among all the options that are given in the question is option "c".

Correct answer: C). Female chimpanzee walks away when male chimpanzee approaches

The male chimpanzee spends most of their time in a community in which they are born. In contrast to male-female chimpanzee live their group after their birth to join the neighboring group when they are mature.

Female chimpanzee is known to spend their most of the time their child or with the other female rather than the male. Female chimpanzee is known to form, a coalition against a bullying male.

Hence, the correct answer would be option C.

Other Questions

Jane supplied plenty of water, minerals, sunlight, and carbon dioxide for her plant. But the plant still didn't do well. What might be the reason?

Which kind of tissue is designed to regulate temperature, secrete lubricants, and protect the body from harmful substances? epithelial muscular connective nerve

What happens if both sister chromatids move to the same pole

Which type of selection leads to increased phenotypic and genetic variation?