The endosymbiont theory proposes that eukaryotes evolved from a symbiosis between a prokaryote and a protocell.a. True
b. False

Answers

Answer 1
Answer: a. True

As many researchers hypothesize that the old single-celled organism or the origin of the complex-celled organisms came from the endosymbiosis of the mitochrondrion organism and the prokaryotic cell. It has been said that mitochondria was an independent organism which then to have been evovled itself after planting itself inside a prokaryotic cell which aided cellular respiration and production of ATP (Adenosine Triphosphate). This then aided the prokaryotic cell to be more sophisticated and caused another change from having without a true nucleus to a eukaryotic cell with a nucleus and embedded DNA.  
Answer 2
Answer:

Actually False I got it wrong when I chose true. Your welcome


Related Questions

Oceans and seas can act as a heat reservoir to regulate climates. They can both absorb great quantities of heat in the summerRead theOceans and seas can actas a heat reservoir to regulate climates. They can absorb great quantities of heat in the summer, with very little temperature change. In the winter, oceans and seas release the heat. This is the main reason why coastal climates are milder compared to inland climates. Which choice correctly explains this phenomenon? 1) the high boiling point of water caused by hydrogen bonding 2) the high specific heat of water caused by hydrogen bonding 3) the high heat of vaporization of water caused by the non polar bonds 4) the high freezing point of water caused by the strength of its covalent bonds
Help with these please???
Why do erythrocytes swell and burst when placed in water? (A) Since water concentration is higher outside the cell, water moves inward by passive diffusion. (B) Since hemoglobin concentration is higher inside the cell, hemoglobin moves outward by exocytosis. (C) Since potassium ions are more concentrated inside the cells, potassium ions move outward by osmosis. (D) Erythrocytes pump water inward by active transport to balance osmotic gradients. (E) Water is a universal solvent and simply dissolves the erythrocyte membranes.
Which of these polymers is responsible for your inheritance DNA triton
An animal's genetic makeup can influence its behavior. True False

What are the functions of the smooth and rough E.R.s

Answers

The endomembrane system is a group of cell membranes and organelles that are mutually interconnected, either by being directly continuous with one another or by sending one another vesicles—little spheres of membrane then can bud off from one membrane and fuse with another. 

The rough endoplasmic reticulum (rough ER) gets its name from the bumpy ribosomes attached to its cytoplasmic surface. As the ribosomes attached to the rough ER make proteins, they feed the newly forming protein chains into the lumen.

The smooth endoplasmic reticulum (smooth ER) does not have ribosomes on its cytoplasmic face.The smooth ER has a variety of functions, and its exact role may vary between cell types.

One role of the smooth ER is to produce lipids, including phospholipids, cholesterol, and steroids.

Answer:

The endomembrane system is a group of cell membranes and organelles that are mutually interconnected, either by being directly continuous with one another or by sending one another vesicles—little spheres of membrane then can bud off from one membrane and fuse with another. 

Read more on Brainly.com - brainly.com/question/1859844#readmore

Explanation:

Define the term tissue as used in this passage.

Answers

In the context of the passage, the term "tissue" refers to a group or collection of specialized cells that work together to perform a specific function within an organism. Tissues are one of the fundamental building blocks of multicellular organisms, including humans and other animals.

Different types of tissues exist in the body, each with distinct structures and functions. Some common types of tissues in the human body include epithelial tissue (covering and lining tissues), connective tissue (supportive and protective tissues), muscle tissue (responsible for movement), and nervous tissue (involved in transmitting nerve signals).

Together, these various tissues form organs, which, in turn, contribute to the proper functioning of systems within the organism. For example, the lungs are composed of tissues that facilitate gas exchange, and the heart is made up of tissues that pump blood throughout the body. The cooperation and coordination of different tissues allow an organism to carry out essential life processes and maintain its overall function and well-being.

To know more about tissue:

brainly.com/question/1308129

#SPJ2

The complete question is : Define the term tissue as used in this passage.

In vascular plants, such as angiosperms and gymnosperms, cell division takes place almost exclusively in specific tissues known as meristems. Apical meristems, which are located at the tips of shoots and roots in all vascular plants, give rise to three types of primary meristems, which in turn produce the mature primary tissues of the plant. The three kinds of mature tissues are dermal, vascular, and ground tissues. Primary dermal tissues, called epidermis, make up the outer layer of all plant organs (e.g., stems, roots, leaves, flowers). They help deter excess water loss and invasion by insects and microorganisms. The vascular tissues are of two kinds: water-transporting xylem and food-transporting phloem. Primary xylem and phloem are arranged in vascular bundles that run the length of the plant from roots to leaves. The ground tissues, which comprise the remaining plant matter, include various support, storage, and photosynthetic tissues. In vascular plants, such as angiosperms and gymnosperms, cell division takes place almost exclusively in specific tissues known as meristems. Apical meristems, which are located at the tips of shoots and roots in all vascular plants, give rise to three types of primary meristems, which in turn produce the mature primary tissues of the plant. The three kinds of mature tissues are dermal, vascular, and ground tissues. Primary dermal tissues, called epidermis, make up the outer layer of all plant organs (e.g., stems, roots, leaves, flowers). They help deter excess water loss and invasion by insects and microorganisms. The vascular tissues are of two kinds: water-transporting xylem and food-transporting phloem. Primary xylem and phloem are arranged in vascular bundles that run the length of the plant from roots to leaves. The ground tissues, which comprise the remaining plant matter, include various support, storage, and photosynthetic tissues.

Answer:

tissue is a cellular organisational level between cells and a complete organ. A tissue is an ensemble of similar cells and their extracellular matrix from the same origin that together carry out a specific function. Organs are then formed by the functional grouping together of multiple tissues.

Explanation:

Members of Porifera are diploblastic. Which statement clarifies this?A. They are unsegmented.
B. They have a true body cavity.
C. They have two germ layers.

Answers

Answer;

C. They have two germ layers.

Explanation;

  • Diploblastic organisms are those organisms that possess two major tissue layers, that is the ectoderm or the outer layer and the endoderm or the inner layer. Triploblastic animals on the other hard are those animals that possess three germ layers, that is the ectoderm, endoderm, and mesoderm.
  • Poriferans are normally called the sponges. Their body wall is diploblastic which consists of an outer layer known as pinacoderm and an inner layer called choanoderm.

Final answer:

Members of the phylum Porifera are not considered diploblastic because they do not have two germ layers. Instead, they have a unique level of organisation where their cells do not form tissues or organs. The term 'diploblastic' correctly applies to organisms like jellyfish or sea anemones that have two germ layers producing various tissues and organs.

Explanation:

Members of the phylum Porifera, often referred to as sponges, are not considered diploblastic because they do not have two distinct germ layers. Instead, they possess a unique level of organization in which their cells do not form tissues or organs. Confusingly however, they do have two layers of cells, but these do not equate to the germ layers seen in true diploblastic organisms like cnidarians.

In a true diploblastic organism, such as a jellyfish or sea anemone, the two germ layers - the ectoderm and endoderm, produce the various tissues and organs of the organisms. The jellyfish's tentacles and mouth, for instance, are produced by the ectoderm, while its digestive cavity is produced by the endoderm.

So, the statement that clarifies the term 'diploblastic' with respect to members of Porifera is not accurately represented by any of the provided options, since they are not truly diploblastic. The closest would be 'C. They have two germ layers', but this is still not technically correct for the reasons mentioned above.

Learn more about Diploblastic organisms here:

brainly.com/question/31488795

#SPJ6

What is meiosis getting ready for

Answers

The process of meiosis is the cell division that prepares the species for sexual reproduction. Through meiosis cells goes from diploid (2n) cells to haploid (n) gamates. Each daughter cell carries exactly one half of the genetic material from the mother cell. In females the result of meiosis is the production of egg cells, where in the male, the result of meiosis is the production of sperm cells.

Hello there! :)

Explanation: Meiosis is the process of two cell divisions by which one diploid cell produces four haploid cells with half the number of chromosomes as the parent cell.

Hope this helps!

-Charlie

Thanks!

Have a great day!

:)

:D

In looking at the location of Homeotic (Hox) genes Antp and Scr, it turns out that they are located next to each other. Why is it not surprising that the Antp gene and the Scr gene are located next to each other?

Answers

Answer:

Because these Hox genes are controlled by the same enhancer and they are part of the same developmental program

Explanation:

The Hox genes are evolutionarily conserved transcription factors found in animals. These factors are critical transcriptional regulators and they are known to regulate developmental programs

When Elaine accidentally touched the hot stove, she immediately pulled her hand away without even having to think about it. This seemingly automatic movement of her hand could not have been possible without the effective operation of the ______________ nervous system.

Answers

Answer:

somatic

Explanation:

The somatic nervous system is one of the components of the peripheral nervous system. The somatic nervous system consists of nerves (sensory and motor nerves) which function in carrying motor and sensory information to and fro the central nervous system. The somatic nervous system is responsible for voluntary movements as well as reflex movements.  

The automatic movement of Elaine’s hand could only be possible with the effective function of the somatic nervous system.