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Alinara [238K]
3 years ago
5

Which two structures are not found in animal cells

Biology
2 answers:
nexus9112 [7]3 years ago
8 0
The cell wall and chlorophyll are absent in animal cells. These are unique to plant cells.
garik1379 [7]3 years ago
6 0
The cell wall and chlorophyll. Instead of a cell wall, an animal cell contains a cell membrane to allow flexibility. Cell walls are in plant cells to keep it firm and strong. Chlorophyll is in plants and produces the green pigment
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What do you think could be done to reduce levels of carbon dioxide in the atmosphere?
damaskus [11]
We cant really take away the carbon dioxide that is already present in the atmosphere unless with very advanced technologies but we can surely reduce the production level.

The production of carbon dioxide is mostly from the burning of fossil fuels and the gas produced by factories or vehicles.

As ourselves, we may not be able to stop the factories from producing gas and burning fuel but there are still something that we can do to help a bit. For example, turn off the electrical appliances when we're not using. This can save electricity thus to reduce the burning of fossil fuels. Or we can also take public transport instead of private vehicles to reduce the amout or carbon dioxide given out.

As the government, they should set up laws to control the gas produced by factories and vehicles, such as examining the gas content.
8 0
3 years ago
In the 1920s, bacteriologist Fred Griffith demonstrated that a heat-killed, infectious pneumococcus produced a substance that co
Juliette [100K]

Answer:

Some substance in the infectious S strain could change the harmless R strain into the more lethal form.

Explanation:

These first type of experiments where crucial to advance in DNA knowledge.

In one experiment, they treated the material with enzymes that destroy all proteins. This is important because scientist notice that there was something else that was causing the strain to change into a lethal form and was heritable (DNA).  Know a days we know that plasmids are responsible for such transformation.

5 0
3 years ago
Need help with three questions
evablogger [386]

1. DNA (double helix)

2. idk

3. idk

3 0
3 years ago
Which of these statements describes one way that a nonrenewable energy resource is obtained?
Vladimir [108]
The correct answer is D
4 0
3 years ago
Read 2 more answers
Help please :)!!!
Illusion [34]

Answer:

It would be A: a cell that has double the number of chromosomes as the parent cell

and if for some reason that is wrong then it could possibly be C and just use the same explanation.

Explanation:

This is because Haploid Gametes are the things that are produced during meiosis-which is a type of cell division which reduces the number of chromosomes in a parent diploid cell by half

7 0
3 years ago
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