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STatiana [176]
3 years ago
13

Which reason best explains why dead specimens must be used with transmission electron microscopes?

Biology
2 answers:
Masteriza [31]3 years ago
5 0

Answer:

C. Specimens are placed in a vacuum

Explanation:

Since transmission electron microscopes must be used in a vacuum the specimen cannot be living. In a vacuum, there is no oxygen so nothing could survive it.

Goryan [66]3 years ago
4 0

Answer:

C. Specimens are placed in a vacuum

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All macronutrients, vitamins and minerals provide energy. <br> a. true <br> b. false
erastova [34]

Answer:

True

Explanation:

Macros are macronutrients. Your body needs these nutrients in larger amounts in order to function properly as macro means large. In addition, all of these nutrients provide your body with energy measured in the form of calories or kcals. There are three types of macronutrients: carbohydrates, proteins, and fats.

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1 year ago
Which terms describe the different movements of Earth? Select three options.
AlexFokin [52]

Answer:

rotation

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Explanation:

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4 0
3 years ago
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Many psychologists are suspicious of memories retrieved through hypnosis because:
GenaCL600 [577]
The answer is: Because a subject might involuntarily manufacture a false memory and believe it is true.






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4 0
3 years ago
Select ALL the correct answers. Based on these images, what can you say about the tentacles of an octopus and the limbs of a liz
slamgirl [31]

Tentacles of an octopus as well limbs of a lizard are analogous structures.

Analogous structures or organs perform the same function in different organisms that bear no resemblance to each other anatomically. Analogous structures are formed as a result of convergent evolution, i.e. different structures evolving for the similar function and thus having similarity. Tentacles of an octopus as well as limbs of a lizard are used for the similar function, i.e. locomotion in this case.

On the other hand, homologous structures result from divergent evolution. Homologous organs contain a similar basic structure but perform distinct functions in different organisms.

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brainly.com/question/14963404

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4 0
8 months ago
Skeletal muscle fibers are classified as ""fast"" or ""slow"" based upon what factor?
andrey2020 [161]

Answer:

Skeletal muscles fibre are classified base on how the produce energy.

Explanation:

Skeletal muscles fibres consist of bundles of cells that form muscles which contain myobrills.

Skeletal muscles are classified based on how the produce energy;

Type 1 or slow pitch muscle fibres are more efficient and last for a long period of time. They are use for postural maintenance or endurance. It use aerobic respiration to produce energy or ATP.

Type 11 or fast twitch muscle fibres use anaerobic respiration and are for short speed and fatigue more easily than type 1.

6 0
3 years ago
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