In the illustration, which site is an oceanic spreading center? А B C D

start this thing that red pandas and raccoons are more a recent common ancestor that red pandas and giant pandas do if true what

adelina 88 [10]

Answer:

D

Explanation:

im going to guess its a cause think of it this way its like family in a way if raccoons and red pandas are a more common ancestor than they might have been family along the lines of history somewhere if its not a than d i hop this helps and id pick d it sounds more frequent

7 0

3 years ago

,what body part likely contains epithelial tissue?

Alika [10]

Its found in the body's tissues.
Hope that helps. I can give a more detailed answer if you need one.

5 0

3 years ago

HELP!!! PLZ Which landform is part of the cryosphere? glacier, lake, ocean, or river

torisob [31]

Answer:

glacier

Explanation:

6 0

3 years ago

Read 2 more answers

What is a living cell?

Diano4ka-milaya [45]

Answer:

Though they are often debated, there are eight main characteristics that define a cell as living.

The first is genetic code. All living things contain DNA, which is like the instruction manual for life. DNA is contained in each cell, and passed from parent to offspring.

The second is growth and development. Whether by creating more cells or creating more organelles within the cell, all living things grow and develop.

The third characteristic is reproduction. Reproduction can be sexual or asexual, but in the case of single cells, it is asexual.

The fourth characteristic is response. All living things, including cells, react to external stimuli, such as temperature or salinity.

The fifth characteristic is homeostasis. Homeostasis is the condition by which living things maintain a stable internal environment in the midst of an ever-changing external environment.

The last three characteristics go hand in hand, and are sometimes combined, but in my mind they are distinctly separate.

Sixth is consumption, which is taking in food and other materials. A cell specifically takes in molecules such as water or glucose during consumption.

Seventh is metabolism, which is using materials consumed in order to create energy. Living cells use enzymes to break down materials to produce ATP (adenosine triphosphate), which is usable energy.

Finally, all living cells undergo excretion in some form. Some examples in cells include exocytosis and osmosis.

These 8 characteristics, though often controversial, determine a cell as living.

7 0

2 years ago

The diagram to the right represents the lytic What is occurring at step c

lilavasa [31]

Complete question:

The diagram to the right represents the lytic cycle. What is occurring at step C?

The pieces made in replication are assembled to complete the new virus particles.
The virus attaches to the host cell.
The host's DNA is disassembled and the virus takes over the cell's metabolic activity.
The new viral nucleic acid and viral proteins are replicated.
Lysis occurs, killing the cell.

Answer:

4. The new viral nucleic acid and viral proteins are replicated

Explanation:

During the lytic cycle, a host cell is infected by a virus. The infected cell dies by lysis of the cell membrane while the new copies of the virus are being released. The lytic cycle is the principal viral reproductive method and involves the destruction of the infected cells.

The lytic cycle is composed of five steps:

Attachment phase:

Viruses recognize specific receptors in the membrane of the host cells, where they get attached. These receptors are glycoproteins or lipoproteins that join viral elements and hold them on the host surface.

Penetration phase:

Viruses use different mechanisms to penetrate the host cells.

By injection, by perforating the host cell wall and membrane and injecting the genetic material through a hole. The rest of the virus remains outside the cell.
By endocytosis. The virus introduces by complete into the host cell by endocytosis of the membrane. Once inside, the virus breaks the vesicle membrane and gets in contact with the cytoplasm.
By fusing with the membrane
By going through the pores

Biosynthesis phase (replication and synthesis of the viral components)

There are no viral copies yet, but DNA, RNA, and proteins are being produced.

The host cell metabolism is used to synthesize viral elements. Viral nucleic acid uses the host cell nucleotides and RNA polymerase to synthesize mRNA and produce proteins and enzymes to destroy the infected cell DNA.

The viral nucleic acid duplicates and new proteins are produced.

Maturation phase

In this stage occurs the Assembling of the newly synthesized viral components. Many viral copies are formed.

Lysis phase

This is the moment in which the new viral copies get released. They break the host cell membrane by lysis through the action of the endolysin enzyme. Lysis produces the host cell death.

In the exposed diagram you can recognize

A) Attachment phase and penetration by injection phase

B) Biosynthesis phase → destruction of the host DNI. The host cell metabolism is used to synthesize viral elements

C) Biosynthesis phase → Viral components (nucleic acid + proteins) are already replicated.

D) Maturation and Lysis phase

E) Infection of a new host cell by attaching to its membrane

5 0

3 years ago