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kkurt [141]
3 years ago
7

Which activity can occur without the use of energy?

Biology
2 answers:
GaryK [48]3 years ago
6 0
Energy can power electricity which can power tv's, light, chargers, and everyday electricity
Llana [10]3 years ago
4 0
Gravity i do believe
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Choose ALL that apply: Changes the APPARENT WAVELENGTH of the light. 1 point
Nataly_w [17]

Answer:

The correct answer is "Red shift"

Explanation:

Blue shift: When the source and observer approach one another, the evident frequency increments or apparent wavelength diminishes. Here the Doppler shift is positive. This is known as blue shift.

Red shift: When the source and observer move away from one another, the clear frequency diminishes or apparent wavelength increments. Here the Doppler shift is negative. This is known as red shift.

8 0
2 years ago
Virtually all cells in the human body have the same DNA. What’s make some undifferentiated cells differentiated into brain cells
mariarad [96]

Answer:

Changes in gene expression

Explanation:

This phenomenon is the result of changes in gene expression. That means, how the information in the DNA is used by the cell. The genes that are active in the cells of the brain will be very different from the genes that are active in the cells of the bone marrow.

These patterns of gene expression are different for each cell, and dictate the identity of that cell. Gene expression patterns are controlled by a variety of factors in the cell that allow tissue-specific expression, such a transcription factors.

This can also be facilitated by another layer of regulation called epigenetics, which literally means "on top of" genetics, and refers to modifications of DNA (and the proteins around it), that can reflect and influence the activity of the genes within.

8 0
3 years ago
Which type of bone is indicated by the arrow? long irregular flat short
nlexa [21]

The answer is long

The bone indicated by the arrow is femur bone. It should be classified as the long bone. Other example for long bones would be tibia and fibula. Short bone would be carpal or tarsal bones. Flat bone could be found in skull. Irregular bone would be the vertebrae or pelvic.

8 0
2 years ago
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Lorico [155]

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C. Electron transport chain

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3 years ago
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