Why are the walls of the atria thinner than the walls of the ventricles

Answers

Answer 1

Answer:

The blood is pumped down to the ventricles, which are larger pumping chambers which must propel blood out of the heart therefore, they contain more muscle tissues than atria do. On the right side, the right ventricles pumps blood out through the pulmonary arteries to the lungs, which isn't a long distance .

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Answer 2

Answer:

Hi Sophonie

Because the ventricles need to pump blood to the entire body

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How does natural selection affect animal behavior and how behaviors can affect the survival of an animal species?

Answers

There are behaviors that are beneficial for the species and behaviors that are detrimental. Usually animals will acquire behaviors beneficial to the survival of their species through natural selection. An organism is more likely to mate with another organism that behaves in such a way that will be beneficial to their offspring.

Which would have the GREATEST effect on the rate of photosynthesis in a plant?a. oxygen level
b. light intensity
c. sugar concentration
d. starch concentration

Answers

I would say B. but I'm not %100 sure

The ____________theory of inheritance states that genes are location on _________, which undergo segregation and independent assortment.

Answers

Option one: chromosome; chromosomes

A cell's digestive enzymes are enclosed in a membrane bound organelle. How can these molecules function of a plasma membrane

Answers

Answer:

A cell digestive enzymes are enclosed in a membrane bound organelles known as Lysosomes. Lysosome contains about 50 different types of enzymes which helping in breakdown of different types of biological molecules such as Protein, carbohydrates, nucleic acid and lipids.

Cells transporting the material into lysosome where digestive enzymes are present. Now the molecules are digested by enzymes after that these digested molecules are going back to the cytosol for use by the cell.

Enzymes which are present in lysosome require acidic environment to function in proper manner.

The membrane bound organelle you refer to is the lysosome. The lysosome fuses with a vacuole where it digest the contents.

Why is pancreas considered as a heterocrine gland

Answers

the pancreas is considered a heterocrine gland because it has both endocrine and exocrine functions.

the pancreas functions as an endocrine gland by secreting glucagon and insulin

the pancreas functions as an exocrine gland by secreting pancreatic juices to the duodenum.

Radiocarbon dating would be useful in dating the age of Earth.
True or False

Answers

The given statement is False.

Radiocarbon dating cannot be used determine the age of the earth because the earth is million years old.

Radiocarbon dating can be used only for the substance that is 100-40,000 years old.

As, the earth is older than 40,000 years of age radiocarbon dating cannot be used for substances that is this much old.

Answer:

Explanation:

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