Final Practice: Read each statement. If the statement is true, write “T”. If the statement is false, write “F”.

Biology

1 answer:

gavmur [86]3 years ago

5 0

Answer:

F, i just guessed because I do not see the statements

Explanation:

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b. In 1979, the estimated elephant population was 1.3 million and in 2007 it was 640,000. By approximately what percentage did t

saveliy_v [14]

Answer:

The initial amount, 1.3 million = 1,300,000 is the 100%.

now, 640,000 is a given percentage (lower than 100%) of that.

How we can find it?

suppose that 640,000 represents an x%.

Then we have that the quotient between the actual quantities and the percentages must be the same

(640,000/1,300,000) = x%/100%

x% = (640,000/1,300,000)*100% = 49.23%

Then the percentage declined is:

100% - 49.23% = 50.77%

The other question can not be answered with the given information.

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As you know bone marrow makes red blood cells, white blood cells and platelets and as you grow it begins to store fat. What do y

Anon25 [30]

It allows the recipient to cure certain things like sickle cell disease.

can help those w/ leukemia !

All recipients have impairment for a while after the transplant

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3 years ago

Digestive cells produce and secrete many enzymes that break down ingested food. these cells have a large number of ribosomes ___

tankabanditka [31]

The answer to this question would be: on the rough endoplasmic reticulum.

Digestive cell produces many enzymes which were made by protein. Endoplasmic reticulum has a role in protein synthesis. It is important to have many rough endoplasmic reticulum to accommodate the protein synthesis function so that the digestive organ can produce enough enzyme

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3 years ago

How do living things make use of the energy stored in food molecules?

ipn [44]

Answer:
The energy stored in food molecule (glucose) is released in he process of respiration.

Explanation: Respiration is a cellular process in which glucose molecule is broken down into carbon dioxide, water and ATP is produced as end product. Respiration consists of following main steps:
1. Glycolysis: It occurs in the cytoplasm of cell, and each glucose molecule is converted into two pyruvates with help of ATP.
2. Formation of Acetyl coenzyme A: It is a connecting link reaction between glycolysis and Kreb cycle. In this phase Each pyruvate react with Coenzyme A to become acetyl coenzyme A.
3. Kreb Cycle: It occurs inside mitochondria. In this cycle each acetyl coenzyme A with fixed with CO to produce citrate which undergo in a cyclic reaction to produce ATP and NADH. .
4. Electron transport chain: It is the last step of respiration which complete in mitochondrial membrane. In this phase most of the energy is produced along with H₂O as by product.

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3 years ago

1. An animal cell has a 2% salt concentration. It is placed into a solution with a 0.05% salt concentration. What would happen t

jenyasd209 [6]

Answer: water will move out of the animal cell causing it to swell and burst (Option C)

Explanation:

When a cell is immersed into a salty solution, the osmotic pressure generated by concentration differences of salt, will make the salt come in due to cell self-protection mechanism of the cell and water will come out, eventually the cell can burst .But since the animal cells has a higher concentration of salt and the solution has a lower concentration osmosis will take place and salt will move from higher salt concentration to lower.

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