BIOLOGY HIGH SCHOOL

DNA in a solution is negatively charged; if you ran a sample of DNA, what would you predict about its migration?

Answers

Answer 1
Answer: Assuming that you ran the DNA sample on an agarose gel. And that you are performing gel electrophoresis. I would predict the sample of DNA moving away from the negative terminal or end and to the positive one. As it is being repelled due to its overall negative charge and thus attracted to the positive end. Both the magnitude of charge and size of DNA sample fragment act as factors and contribute to migration.

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When water moves through a semipermeable membrane to achieve equilibrium between two solutions, what is this called?

Answers

osmosis, for example if you put an egg that is stripped of its shell it will absorb water to get to equilibrium

Which best explains the evolution of gymnosperm plants?A.They evolved along with monocots and dicots.
B.They evolved after the seeded flowering plants.
C.They evolved after the seedless vascular plants.
D.They evolved before the seedless nonvascular plants.

Answers

The answer to this question about the evolution of the gymnosperm plants would be C. They evolved after the seedless vascular plants.

Gymnosperms, or sometimes termed as seed plants, are classified as vascular plants and has been thriving for centuries on earth through producing seeds. They are multicotyledonous and are the opposite of flowering plants. Conifers would be the most abundant group of gymnosperms while the cycads come in second. Gingko would place last with just having one species under its name.

The statement that best explains the evolution of gymnosperm plants is that they evolved after the seedless vascular plants.

What are gymnosperms?

Gymnosperms are classes of plants that do not produce fruits but rather bear seeds structures called cones.

Gymnosperms and angiosperms both belong to the class of plants called higher plants because they have mechanisms for conducting and transporting water and nutrients.

Gymnosperms are believed to evolve before angiosperms or flowering plants but after seedless vascular plants called pteridophytes.

Therefore, the statement that best explains the evolution of gymnosperm plants is that they evolved after the seedless vascular plants.

Learn more about gymnosperms at: brainly.com/question/9830102

Describe how a person can count the rate if beating of the left ventricle.

Answers

To count the rate of beating. For instance, if the heartbeat is 70 beats per minute and the stroke volume is 70 cm 3, the cardiac output is 70 70 cm 3 per minute, or 4900 cm 3 per minute.

What is the left ventricle?

The heart's left ventricle is the chamber that pumps blood to all the arteries. The left ventricle is the name for the lower left chamber of the heart. The heart's left ventricle serves as its primary pumping chamber. Left ventricular hypertrophy can cause stiffening of the thicker heart wall.

Because the pressure at which this chamber pumps blood is the same as that in all arteries, you can compute beating by measuring the pulse in the radial artery in your wrist. This artery is easier to discover beating because it is closer to the surface.

Therefore, to count the rate of the beating of the left ventricle, cover SV with your finger, and you are left with CO/HR.

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what is left ventricle:
it is the chamber of heart that supplies blood to all arteries...
how to calculate beating:
you can find it by calculating pulse in radial artery in your wrist...
reason:
the pressure with which this chamber pumps blood is the same that is in all arteries so the artery in your wrist is easy to find beating because it is nearer to the skin...

The movement of fluids between cellular compartments ________. the movement of fluids between cellular compartments ________. is regulated by osmotic and hydrostatic forces requires active transport requires atp for the transport to take place involves filtration

Answers

The movement of fluids between cellular compartments is regulated by osmotic and hydrostatic forces.


Hydrostatic pressure is the force exerted by a fluid against a wall which causes movement of fluid between compartments. This pressure is important for exchanging plasma and nutrients between capillaries and surrounding tissues and also in the nephrons (kidneys) where ensures proper filtering of the blood to form urine.Fluid also moves between compartments along an osmotic gradient (the difference in concentration of solutes on one side of the cell membrane to that on the other side). Water constantly moves into and out of fluid compartments via osmotic gradient.

Which of the following statements best supports Mendel's Law of Segregation?Mendel law of segregation

Answers

During gameteformation, the individual alleles that comprise a gene must separate. The correct option is C.

What is law of segregation?

As per Mendel's law of segregation, "during gameteformation, every gene segregates from each other so that each gameteconveys only one allele for each gene." The secondlaw of inheritance is the law of segregation.

During gameteformation, the individual alleles that comprise a gene must separate from each other in a particular way.

Thus, the correct option is C.

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The missing options of the question are:

  • A-individual traits are inherited independently of one another.
  • B-dominant traits are always separated from recessive traits during reproduction.
  • C-the individual alleles that make up a gene must separate during gamete formation.
  • D-breeding two true individuals together always produces offspring‘s with the recessive phenotype

Answer: The answer is C, the individual alleles that make up the gene must SEGREGATE (which means separate) during gamete formation, hence the name “law of segregation”

Explanation: Hope this helps

What biome covers mostly Canada?

Answers

it would be mostly covered with taiga.
The biome that mostly covers Canada is taiga
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