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lara [203]
3 years ago
13

What distance was used to define the astronomical unit (AU)?

Biology
1 answer:
Aleonysh [2.5K]3 years ago
5 0

The average distance from the sun to Earth

Explanation:

  • Astronomical unit is defined as the the average distance from the center of the earth to the center of the sun.
  • It is represented by AU.
  • The value is equal to a unit of measurement of  149.6 million kilometers.
  • An Astronomical Unit  is approximately equal to  93 million miles (150 million km). It's approximately 8 light-minutes.
  • Astronomical units are usually used to measure distances in solar system.

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Which step happens first in DNA replication?
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The first step is The replication fork forms (d)
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Explain how and why hypertonic, isotonic, and hypotonic solutions affect plant and animals cells?
lesya692 [45]
When placed into an hypertonic solution, animal cells will shrivel up, while plant cells will stay firm thanks to their air-filled vacuole. In a hypotonic solution, the cells will take on water and appear more plump. In an isotonic solution, they'll stay the same.
3 0
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Name the subunits that make up each of the macromolecules
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The sub units that make up Macromolecules are proteins, lipids, nucleic acids, and carbohydrates.
3 0
3 years ago
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A hypertonic solution has:
BaLLatris [955]

A hypertonic solution has:

Fewer water molecules outside the cell than are inside the cell. Thus, option "A" is correct.

<h3>What is hypertonic solution?</h3>
  1. The cell is in a hypertonic solution because it lost water through osmosis and shrunk.
  2. A hypertonic solution contains more solute molecules compared to solvent molecules while the hypotonic solution has more solvent molecules than solute molecules.
  3. When a plant cell is placed in a hypertonic solution it loses water through osmosis and shrinks.
  4. An animal cell placed in a hypotonic solution absorbs water through osmosis, increases in size and then bursts. Plant cell, on the other hand, does not burst when placed in a hypotonic solution as it contains a cellulose cell wall.

Thus, option "A" is correct.

To learn more about hypertonic solution  click here:

brainly.com/question/14507544

#SPJ1

7 0
2 years ago
Ben Affleck has a cleft chin, but his ex-wife Jennifer Garner does not. Neither one of their two daughters (Violet and Seraphina
kherson [118]

Answer:

Ben - Y Xc

Jen - XCXC

Violet - XCXc

Seraphina - XCXc

Samuel- Y Xc

Explanation:

Given -

Ben has a cleft chin

Let the allele for cleft chin be "c"

and the allele for normal chin be "C"

When Ben with cleft chin mates with wife Jennifer Garner having normal chin, then the two girl child do not have cleft chin but the boy has cleft chin.

This means that the allele C could be X -linked and the mother is not the carrier but the father is

The genotype of father Ben would be Y Xc

Genotype of mother would be XCXC

Genotype of two daughters XCXc  , XCXc which means they are carrier for the next generation

Genotype of Boy - Y Xc

3 0
3 years ago
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