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Kitty [74]
3 years ago
13

What is the trait that is ancestral to all chordates?

Biology
2 answers:
nirvana33 [79]3 years ago
8 0
Notochord - a rod made from cartilage, in vertebrates it is replaced by spine
Alla [95]3 years ago
3 0
<span>The trait that is ancestral to all chordates is the presence of a notochord...the others are gill slits and nerve chord</span>
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The number of bacteria in a certain population is predicted to increase according to a continuous exponential growth model, at a
Brilliant_brown [7]

The given question is incomplete. The complete question is as follows;

The number of bacteria in a certain population is predicted to increase according to a continuous exponential growth model, at a relative rate of 16% per hour. Suppose that a sample culture has an initial population of 71 bacteria. Find the predicted population after three hours Do not round any intermediate computations, and round your answer to the nearest tenth bacteria .

Answer:

114.7

Explanation:

A (t) represent the population of the bacteria at the time t.

Since, the population grows exponentially, the population can be calculated as follows:

A (t) = Ao ×  e^{kt}

A (t) is teh final population, Ao is the initial population, e is the exponential, k is rate and t is time.

A (t) = 71  × e^{0.16\times t}

For t = 3 hours

A (t) = 71 × e^{0.16\times 3}

A (t) = 114.7.

The population of bacteria after 3 hours is 114.7.

6 0
3 years ago
the solution inside a plant cell is approximately a 1% saline solution. in a 25% nacl solution the cytoplasm of a plant cell wil
mrs_skeptik [129]
<span>The cell has 1% concentration of the salt. The external environment is highly concentrated with 25% saline solution. This will lead to release of water outside the cell, by passive diffusion from a region of high conentration of solvent to lower concentration. Thus, the cell will shrink.</span>
3 0
3 years ago
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Application of surface tension in respiratory system
likoan [24]

Answer:

The force of surface tension in the lungs is so great that without something to reduce the surface tension, the airways would collapse after exhalation, making re-inflation during inhalation much more difficult and less effective. Collapse of the lungs is called alectasis.

Explanation:

6 0
2 years ago
An organism’s traits are determined by the specific combination of inherited _____.
goldfiish [28.3K]

Answer:

Genes.

Explanation:

Genes are present on DNA that are inherited from parents to their offspring. Genes may be defined as the segment of DNA that ultimately form a particular protein product.

The particular trait of an organism is determined by the specific combination of the inherited genes. The genes are nearly same in all the human beings and there mutation can cause observable phenotype traits.

Thus, the correct answer is option (2).

3 0
3 years ago
How does cellular help heal a bruise?
shutvik [7]

Answer:

The correct answer would be option C.  

Explanation:

Cellular respiration is the st of the chemical reaction that uses glucose molecule and produces energy as ATP that is the energy currency of the cell. It includes three-stage glycolysis, Krebs cycle and electron transport cycle with an intermediate stage in between Krebs cycle and glycolysis that is oxidative carboxylation.

The energy produced by the cellular respiration is utilized in all type of cellular function including repair and renewal of cell and tissue by the cell division.

Thus, the correct answer is option C.

5 0
3 years ago
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