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2 years ago

10. Compare animal and plant cells.

Biology

1 answer:

S_A_V [24]2 years ago

3 0

Animals cells have a mitochondria, plant cells have a vacuole, a chloroplast and a cell wall for protection.

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How do bacteria maintain their internal ph despite the ph of the environment in which they grow?

ipn [44]

The answer to this question would be: by producing buffer

The pH of optimal growth of bacteria might be different. Some bacteria can grow in an acid condition called acidophile, other live in base condition called alkaliphiles and the rest live in neutral pH condition called neutrophiles. The bacteria can maintain their internal pH by producing acid, base or buffer. If the surrounding pH is too acid, the bacteria can reduce the H+ concentration by producing base. If the condition is too alkali/base, the bacteria can produce acid by doing fermentation.

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3 years ago

4. Monosaccharides are to polysaccharides as

vova2212 [387]

Answer:

Explanation:

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2 years ago

Cells that have their own unique structures and functions are _____.

avanturin [10]

Answer: The correct answer is C) Specialized.

Cells that have their own unique structures and functions are called as specialized cells. These cells are present in multicellular organisms. For performing specific function, they have unique adaptations in their structures.

For example- Nerve cells. They receive and transmit nerve impulses from one part to another part of the body. They are connected to other nerve cells or muscle cells in the body. The typical structure of nerve cell consists of body, dendrite, and exon.

As it performs the specific function, therefore, it is an example of specialized cell.

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3 years ago

Read 2 more answers

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Inessa05 [86]

Answer:

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3 years ago

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These periodic changes on Earth are a result of the five major history that have occurred throughout Earth's

shepuryov [24]

Changes sea level by 100 meters

Exposure of continental shelf

Changes in continental shelf composition

Mass extinctions of species in certain areas

Changes in the water cycle

Changes in landscape

Changes in topsoil characteristics

Answer:

A. Ice Ages

Explanation:

These periodic changes on Earth are a result of the five major ICE AGES that have occurred throughout Earth's history

The five major Ice Ages that throughout the Earth's history we're the following:

1. the Huronian: this occurred around 2.4 billion years ago

2. Cryogenian: this followed Huronian age, and it occurred around the period of 850 million years

3. Agondean-Saharan: this major ice age occur around 460 million years ago.

4. Karoo this is a period of about 360 million years

5. Quaternary is the present age, and it has been in existence since about 2.6 million years ago till the moment

Hence, in this case, the correct answer is Ice Ages

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2 years ago