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iris [78.8K]
3 years ago
13

A scientist discovers a cell that has chloroplasts, cytoplasm, DNA, and a cell membrane. Which statement best describes how

Biology
1 answer:
Wittaler [7]3 years ago
3 0

Answer: The cell is eukaryotic because it has chloroplasts. A scientist is studying a cell and can clearly see that it has ribosomes and mitochondria.

Explanation:

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The organelles that produce proteins used within the cell are the _____.?
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Nucleus, ribosomes, endoplasmic reticulum, and <span>Golgi apparatus.</span>
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Which of these definitions have been paired with the correct type of cell?
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Answer:

B. Neurons are cells that conduct electrical impulses.

Explanation:

Red blood cells carry oxygen throughout the body. White blood cells protect against pathogens and aid in blood clotting after injury. Blood cells cannot contract.

Neurons generate and conduct electrical impulses. So this one is correct.

Epithelial cells line the cavities and surfaces of blood vessels and organs, protect underlying tissue, regulate the exchange of chemicals, and secrete various substances. They do not react to stimuli, however neurons do.

Smooth muscles helps the skeleton move, smooth muscle is found in blood vessels and some organs, and cardiac muscle helps the heart beat and pump blood. They are however, not components of blood.

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What are the goals of binomial nomenclature and systematics?
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The goal of systematics is to organize living things into groups that have biological meaning. the science of naming and grouping organisms.

Explanation:

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Answer: Option A.

Polar ice cap in Antarctica.

Explanation:

Scientist drill ice cores from inside the polar ice cap in Antarctica to study variability of climate and differentiate that variability From global climate change. Each layer of the ice tells about weather and what the Earth was like when the first snow fell.

For example, Le grande says that as snow deposits into a growing glacier, the temperature of the air imprints on water molecules.

Icy layers hold particles,aerosols, sea salts, trace elements that were in the atmosphere before and they abide for thousands of years and provide evidence of past events.

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Human activities that clear large areas of land and increase erosion contribute directly to what type
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The correct answer is C. Sediment Pollution.

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