What evolutionary milestone made it possible for more complex, multicellular organisms to exist?

Answers

Answer 1

Answer: The appearance of eukaryotic cells made it possible for more complex, multicellular organisms to exist.
The difference between the eukaryotic cells and the prokaryotic cells (bacteria and archaea) is the membrane-bound organelles, the nucleus, which contains the genetic material. The eukaryotes cells are responsible for forming multi-cellular organisms, which consist of many kinds of tissue made up of different cell types.

Related Questions

Fill in the blank below with the vocabulary word that best completes the sentence.Natural selection leads toa process of change in a population over time.DO NE
Briefly explain ways cars may become more energy efficient in the future
Rank these four layers from youngest to oldest:A D E G A) ADEG B) AEDG C) GDAE D) GEDA
Geometric shapes best represents the change in energy and change in biomass from one tropic level to the next?
In humans, the hormone testosterone enters cells and binds to specific proteins, which in turn bind to specific sites on the cells' DNA. These proteins probably act to do what? See Concept 18.2

Need help on number 11 guys

Answers

It is called a spectra

How do adrenaline help in dealing with emergency situations

Answers

Adrenaline helps in emergency situation by providing energy so that the major muscles of the body can respond to the perceived threat.
In danger, the brain then sends nerve impulses to the adrenal gland in the kidneys. When the nerve signal reaches the adrenal gland, chromaffin cells, in the medulla of the adrenal gland, release epinephrine or adrenaline. It then enters the bloodstream. It is thus carried around the body to cells in various locations, where it initiates several responses.
1. Adrenaline, along with another hormone called glucagon, is responsible for the breakdown of glycogen in liver cells. Glycogen is a form of energy storage. This gives energy to the muscles
2. Adrenaline effects the skin also. Restriction of the arteries is caused by the binding of epinephrine/adrenaline to some alpha-adrenergic receptors. This cuts off blood supply to the skin. This results in the contraction of the smooth muscle cells in the skin, which cause the raising of the hairs on the surface of the skin.
3. The lungs contain smooth muscle. Epinephrine causes smooth muscles to relax. Specifically, epinephrine binds to beta-2-adrenergic receptors on bronchiole muscle cells. This allows the bronchioles to relax, which enables intensified respiration.
4. Adrenaline binds to beta-adrenergic receptors on heart muscle cells. This causes the contraction rate of the heart to increase. This ultimately leads to increased blood supply to the tissues in the body.

What is the definition of a Nucleolus?

Answers

The Nucleolus helps function the cell.

5. Which of the following correctly lists the kingdoms of life scientists currently use? (1 point) Terapoda, Aminota, Mammalia, Carnivore, Felidae kingdom, phylum, class, order, family, genus, species Bacteria, Archae, Eukarya Eubacteria, Archaebacteria, "Protista," Fungi, Plantae, Animalia Would someone please help me out with this?

Answers

The option which correctly lists the kingdoms of life that is currently being used by scientists is: –Eubacteria, Archaebacteria, "Protista," Fungi, Plantae, Animalia–

When Carl Linnaeus initially developed the current system of classification, he named two kingdoms, Plants and Animals. But with the use of the microscope, scientists have come to discover some new organisms. These discoveries have led to the currently used 6-kingdom system of classification.

Plants and animals cells make exact copies through the process of

Answers

mitosis is the process where plant and animal cells make exact copies.

Which fossil fuel releases the least amount of carbon dioxide into the air in a year

Answers

Answer:

Explanation:emissions is the answer

They released the latest amount of carbon dioxide in a year

Other Questions

Compare the excretory system and urinary system

In an ocean ecosystem, which is necessary to begin a food web

Process that takes place at mid-ocean ridgesA. Sea-floor spreading B. Continental drift C. Magnetic reversal D. Magnetic minerals E. Fossils

What is the difference between asexual and sexual reproduction (I need enough examples to write a short essay)