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4 years ago

Why are large numbers of ocean animals found in areas where upwelling occurs?

1 answer:

monitta4 years ago

6 0

Upwelling waters occur when the warm water, on the surface of the oceans in the equatorial regions are pushed towards the poles by winds and the denser cold currents on the ocean bottom move up to replace the displaced waters. The denser currents are usually nutrient-filled and are an ideal substrate for growth of phytoplankton as they warm up on the surface. The algae bloom attracts fish and other producers in the sea. The producers consequently attract other carnivorous fish.

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DNA contains the template needed to copy itself, but it has no catalytic activity in cells. What catalyzes the formation of phos

inna [77]

Answer:

DNA polymerases

Explanation:

The formation of a phosphodiester bond between adjacent nucleotides is catalyzed by the DNA polymerases. They do this efficiently only if the incoming base on the incoming nucleoside triphosphate is complementary to the base on the template strand and can bind efficiently.

4 0

3 years ago

Read 2 more answers

A tall plant crossed with a short one produced offspring, of which about half are tall and half are short. What are the genotype

stellarik [79]

Answer:

Rr x rr

Explanation:

Let's say

RR is a tall plant.

Rr is tall

& rr is a small plant

The only genotypes you can get to make two tall and two short is if you use a hetero pair and a same ressesive (rr) genes.

4 0

3 years ago

Which of the following best describes the hydrolysis of carbohydrates? a.The removal of a water molecule breaks bonds between su

In-s [12.5K]

Answer:

c.The addition of a water molecule breaks a bond between sugar mono-mers.

Explanation:

Hydrolysis refers to reaction with water. When water molecules are added to carbohydrates, the bonds between the sugar monomers are broken. This is the chemical reaction known as hydrolysis reaction.

Generally, since carbohydrates are polymers we can say that hydrolysis reactions result in the breakdown of carbohydrate polymers into sugar monomers by using water molecules

5 0

3 years ago

How do populations survive when the environment changes

Anna [14]

Answer:

i don't know if im right but honestly i could be A B or C

Explanation:

but i would say if its humans adapting to the environment and if an animal probably the same thing but maybe A more than C

8 0

3 years ago

Which of the following are TRUE statements about red blood cells (erythrocytes)?

Romashka [77]

Answer:

The correct answer will be options A, B and E.

Explanation:

Red blood cells or RBC or erythrocytes are the cells present in the connective tissue which forms the blood. RBC perform various functions in the body but the primary function is the transport of the gases in the body.

The RBC are continuously formed in the bone marrow region of the bone form the hemopoietic stem cell found in the bone marrow. These cells produce a large amount of RBC that is about 2 million cells per second in a healthy adult.

When RBC are formed posses nucleus but when mature, they lack nucleus that is genetic material and organelles like mitochondria so, they are not able to divide.

These RBC contain haemoglobin in their cytoplasm which shows high affinity to bind oxygen and low affinity to bind carbon dioxide to the iron group of haemoglobin.

Thus, options A, B and E are the correct answer.

3 0

3 years ago