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nirvana33 [79]
3 years ago
12

31. Which category of carbon-based molecules includes sugars and starches?

Biology
1 answer:
Alexxandr [17]3 years ago
3 0

Answer: D. carbohydrates

Explanation:

Carbohydrates are molecules composed of carbon, hydrogen, and oxygen, and they include sugars and starches. Carbohydrates can be broken down to provide a source of usable chemical energy for cells.

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An important challenge to traditional (pre-1860) ideas about species was the observation that seemingly dissimilar organisms suc
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Answer:

Dissimilar organisms might have evolved from a distant, common ancestor.

Explanation:

First of all we should know species. Species is considered as a basic unit of taxonomic classification of an organism.

Initially, the scientists are agreed on this phenomenon that all distinct species are evolved gradually from common ancestor. Today, the species which are different from each other just like hummingbirds, humans and whales are from the same ancestor but with the time passage genetic mutation occurs and at the end dissimilar organisms we can see in our environment/surroundings.

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3 years ago
Percentages of Nucleotide Differences in Chloroplast Genomes
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Answer:G. thurberi

Explanation: because you can really tell. Correct

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3 years ago
Which cycle involves a gas moving from the atmosphere moving directly into
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Answer:

B. The carbon cycle

Explanation:

In the carbon cycle, carbon in the atmosphere is absorbed into plants, where the plants use photosynthesis to convert that carbon into oxygen and energy for themselves. Neither of the other cycles involves a plant taking in a gas directly from the atmosphere.

Hopefully this was helpful! :)

5 0
3 years ago
An ice fisherman has fallen through the ice. In response to the cold water, sensors in the man's skin send a "cold" signal to th
Svet_ta [14]

Answer:

Hypothalamus

Explanation:

The hypothalamus is a part of the brain which possesses temperature receptor cells that detect changes in the man’s temperature, thereby sending signals in the form of electrical nerve impulses to the man’s muscles and nervous system, which in turn respond in counteracting the drop in the normal temperature of the body.  

Once the muscle cells of this man receive these signals, they produce heat through thermogenesis by shivering when the muscle cells begin to contract. This is one of the mechanisms by which thermoregulation is achieved as controlled by the hypothalamus in the brain of the man.

6 0
4 years ago
Drag each label to the correct location. Each label can be used more than once. In a hydropower station, water stored in dams is
Nataly_w [17]

Answer:

Stored water - gravitational energy

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Explanation:

Dams are used to store or hold water for hydroelectric power plants. This stored water which has gravitational energy is a form of potential energy.

When the water is left to fall and run fast through the turbine, the gravitational energy is transformed into kinetic energy which makes the turbine to spin.

As the turbine spins, kinetic energy that is produced also powers the shaft of the engine in the electric generator, which produces electricuty.

Kinetic energy is transformed to electric energy and transmitted along powerlines.

*See attachment below for labelled energy that is being transformed at several points.

4 0
3 years ago
Read 2 more answers
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