Is Euglena a prokaryotic or eukaryotic organism? explain

Answers

Answer 1

Answer: The answer is "Euglena is an eukaryotic organism".

The main difference between prokaryotic cells and eukaryotic cells is presence of true nucleus and membraned organelles.Eukaryotic cells have true nucleus and membrane bound organelles such as chloroplasts, mitochondria, but prokaryotic cells have cyclic DNA instead of true nucleus and lack of membraned organelles.Euglena has a true nucleus and membrane bound organellessuch as chloroplast. Hence, Euglena is classified as eukaryotic organism.

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Explain the stages of a spider life cycle

Answers

There are three stages in the life cycle of a spider : - the first is embryonic stage, then the larval stage and finally nympho- imginal stage.

Glucose is broken down in different ways both in the presence and in the absence of oxygen.Using the table for reference, which reaction precedes each member of the reaction set in column one?
Reaction set Preceded by
glycolysis A
Krebs cycle B
ETS C
lactic acid fermentation D

A.
A. photosynthesis in plants
B. glycolysis
C. glycolysis
D. Krebs cycle

B.
A. glycolysis
B. Krebs cycle
C. photosynthesis in plants
D. glycolysis

C.
A. glycolysis
B. Krebs cycle
C. glycolysis
D. Krebs cycle

D.
A. photosynthesis in plants
B. glycolysis
C. Krebs cycle
D. glycolysis

Answers

For the given reaction set:

Glycolysis (A)
Krebs cycle (B)
ETS (C)
lactic acid fermentation (D)

Each of the elements of the reaction set is preceded by corresponding elements of set D which consists of:

A. photosynthesis in plants
B. glycolysis
C. Krebs cycle
D. glycolysis

To summarize the order of the reactions:

photosynthesis in plants > glycolysis > Kreb's cycle (aerobic respiration) or lactic acid fermentation (anaerobic respiration) > Electron Transport Chain (ETC)

Aerobic respiration:
Photosynthesis produces glucose, which is used in glycolysis. Glycolysis produces ATP, NADH, and pyruvate. Pyruvate is then used in the Kreb's cycle to produce NADH, FADH2, ATP, and CO2. The ETC then uses the NADH and FADH2 to produce energy.

Anaerobic respiration:
The same process is followed until glycolysis. The pyruvate produced from glycolysis is used in the lactic acid fermentation process to produce lactic acid.

Correct answer is

A. NAD+

B. ATP

C. Pyruvic Acid, ATP, NADH

D. ATP, FADH2, NADH

Name the two stages involved in protein synthesis and explain what occurs in each of the two stages. Be sure to also indicate where each process takes place. Plz don't give one sentence answers : D

Answers

Ans.

Protein synthesis involves two stages, named as transcription and translation. During transcription, information present in DNA molecule is used to make mRNA molecule, while translation involves formation of polypeptide chain or protein by using information present in mRNA in the form of codons.

Prokaryotic organisms lake true nuclei, hence in these organisms both transcription and translation take place in cytosol. In eukaryotic organisms, transcription takes place in nucleus, while translation takes place in ribosomes, present in the cytosol.

The evolution of lungs and gills, which developed to serve a similar gas-exchange purpose in distantly related organisms, is an example of what type of evolution?A. convergent evolution
B. natural selection
C. emergent evolution
D. divergent evolution

Answers

Answer:

The correct answer is option A, that is, convergent evolution.

Explanation:

The convergent evolution in evolutionary biology refers to the phenomenon in which the organisms that are not closely associated, that is, not monophyletic, autonomously evolve identical characteristics as a consequence of having to amend to ecological niches or identical surroundings.

For example, the evolution of lungs and gills that serves similar functions in distant organisms is an illustration of convergent evolution.

Answer:

A. Convergent evolution

Explanation:

If analogous or structurally different oragns performing similar function.. We call that convergent evolution.

Identify the element that humans need to breathe.

Answers

Answer:

top right

Explanation:

i took it

Answer:

The one on the top right

Explanation:

i took the test hope this helps

What is the function of eukaryote

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it is a cell Organelles of Eukaryotic Cells Below is a list of organelles that are commonly found in eukaryotic cells. Organelle Function Nucleus The “brains” of the cell, the nucleus directs cell activities and contains genetic material called chromosomes made of DNA . Mitochondria Make energy out of food Ribosomes Make protein Golgi Apparatus Make, process and package proteins Lysosome Contains digestive enzymes to help break food down Endoplasmic Reticulum Called the "intracellular highway" because it is for transporting all sorts of items around the cell. Vacuole Used for storage, vacuoles usually contain water or food. (Are you are thirsty? Perhaps your vacuoles need some water!) Plant cells also have: Chloroplasts Use sunlight to create food by photosynthesis Cell Wall For support

In general, cells (which include prokaryotic and eukaryotic cells) have a main purpose: to survive. In eukaryotic cells, their shapes often reflect their functions. For example, nerve cells have long extensions that reach out in various directions in order to allow the cell to send and receive nerve impulses. Another example is skin cells. Since skin cells are flat and plate-like, they help cover and protect the surface of the body. As organisms evolve into more advanced organisms, their cells become more specialized and eventually were unable to survive independently. Groups of cells that carry out a similar function is called a tissue. Groups of tissues that perform a particular job form an organ. Groups of organs that perform related tasks form organ systems. Finally, groups of organ systems combine to form an organism. In other words, prokaryotic and eukaryotic cells try to keep the organism alive.

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