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Flauer [41]
4 years ago
5

A student uses a microscope to observe a single-celled organism that can move. The organism contains a nucleus and many chloropl

asts. Based on the observations, the student claims the organism is not a bacterium. Which observation best supports the student's claim?
Biology
1 answer:
soldier1979 [14.2K]4 years ago
5 0

Answer:

The organism is not a bacterium since it contains chloroplasts and nucleus.

Explanation:

Bacterial cells and prokaryotes do not contain a well defined <em>nucleus</em> and do not possess other membrane bound organelles. They usually have a <em>single chromosome</em> which contains circular DNA. They <em>do not</em> possess <u>chloroplasts</u>.

Chloroplasts are present in<em> eukaryotic plant cells</em> which help in the process of photosynthesis. They help absorb sunlight and contain the pigment chlorophyll.

The student is examining a eukaryotic cell.

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vredina [299]

Answer: Differences in osmotic concentrations

Explanation: With solvent particles flowing into the cell, it means the concentration outside of the cell is higher and with initial volume less than 50%, then that within the cell is lower. This results in an osmotic gradient, allowing particles in areas of higher concentration (outside the cell) to flow into the cell, an area of lower concentration.

4 0
3 years ago
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As an astronaut goes out into space, her mass _______________ and her weight ____________________.
irinina [24]
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3 years ago
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Skeletal muscle has ____________ cells with multiple nuclei. It functions in ____________ movement of the body. Skeletal muscle
vichka [17]

Answer:

The correct answer will be

1. Striated

2. Multiple

3. Broken down

4. Tendon

Explanation:

Skeletal muscles are the voluntary muscles found in the human body.

These muscles are made up of muscle fibers or muscle cells which look striated in appearance with many peripheral nuclei. The muscle helps in the locomotion of the body through controlled actions which help in the multiple types of movement.

The muscle moves when it receives impulse signals from the CNS which leads to the utilization of the ATP, the ATP is broken down which helps in the contraction of the muscle. The muscle is connected to the bone via a connective tissue called tendon, as the muscle contracts, it moves the tendon which helps in the locomotion.

Thus, the marked answers are the correct options.

8 0
3 years ago
A science what is the purpose of a conclusion?
Svetllana [295]

Answer:

The function of the essay's Conclusion is to restate the main argument. It reminds the reader of the strengths of the argument: that is, it reiterates the most important evidence supporting the argument.

Explanation:

hope this helps please give brainlest

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