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Ainat [17]
3 years ago
11

Most bacterial cells have a cell membrane and a cell wall.. true or false

Biology
1 answer:
Doss [256]3 years ago
4 0
Bacterial cells lack a membrane-bound nucleus. A cell wall is found in bacteria, plants, fungi, algae, etc...
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Aristotle classified animals according to their ____________________. a. habitat and mating behavior c. mating behavior and rela
makkiz [27]

It’s b.

He grouped the types of creatures according to their similarities: animals with blood and animals without blood, animals that live on water and animals that live on land.


5 0
3 years ago
Based on the cycle of photosynthesis and cellular respiration, one can say that the ultimate original source of energy for all l
ICE Princess25 [194]

Answer:

c. the sun

Explanation:

The sun is the most basic source of energy for all living beings. It supports photosynthesis in plants and algae that is the main reaction for producing energy rich compounds like carbohydrates etc. These compounds are utilized by all life on Earth to stay alive.

4 0
3 years ago
Why DNA is absent in blood plasma?
Keith_Richards [23]

Answer:

Red blood cells and blood plasma do not contain DNA. Red blood cells don't have the DNA containing nucleus and mitochondria. Only white blood cells in blood contain DNA. With blood donation, usually most of the white blood cells are filtered out.

Explanation:

because red blood cells don't have the DNA containing nucleus and mitochondria

3 0
2 years ago
Enter a nuclear equation for the fusion of two h-2 atoms to form he-3 and one neutron. express your answer as a nuclear equation
aliya0001 [1]

The nuclear equation that represents the fusion of two H-2 atoms to form He-3 and one neutron is

\frac{2}{1} h + \frac{2}{1} h >  >  >  >  \frac{3}{2} he   +  \frac{1}{0} n

In a nuclear reaction the nuclides are represented with the chemical symbol preceded by a superscript that represents the mass number (number of protons plus neutrons) and a subscript that represents the atomic number (number of protons).

<h3>What is a Nuclear reaction ?</h3>

A nuclear reaction is a process in nuclear physics and nuclear chemistry where two nuclei or a nucleus and an outside subatomic particle meet to create one or more new nuclides. Consequently, at least one nuclide must change throughout a nuclear reaction.

Learn more about Nuclear reaction here:

brainly.com/question/984564

#SPJ4

6 0
1 year ago
How do your shoulders and elbows move in different ways?
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Our jionts and muscles.
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3 years ago
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