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Softa [21]
3 years ago
10

From where did eukaryotes evolve?

Biology
1 answer:
sasho [114]3 years ago
6 0
Fossil records indicate that eukaryotes evolved from prokaryotes somewhere between 1.5 to 2 billion years ago
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How does pollution threaten coral reefs? Answer using at least 3 complete sentences.
Lostsunrise [7]

Answer:

When pollution occurs on land it travels to the waters which causes the pollutants to enter the water. When pollution enters the water, it damages the algae on the coral. It also lowers water quality, smother the coral reefs, and it speeds the growth of the damaging algae. All these make the coral reefs more susceptible to disease which stops the reefs growth and reproduction.

Explanation:

hope this helps

7 0
3 years ago
What is the most important similarity between sumer and babylon?
Gala2k [10]
An area in the South region Babylonian in present - day Iraq
The chief City of ancient Mesopotamia and capital of the ancient kingdom of Babylonia
5 0
3 years ago
True or False. The complement system consists of several proteins that circulate in the blood and have the ability to enhance bo
nirvana33 [79]

Answer: False

Explanation: The COMPLEMENT SYSTEM consists of proteins synthesized in the liver. They are activated by inespecific harmful substance (antigen) and begins a cascade of proteins that finally forms an attack complex against bacteria.

The COMPLEMENT is part of the INNATE IMMUNITY, because it is an inherent response, something all humans born with, and it is part of the first defense barrier against any antigen. Part of the innate immunity are too: natural killer cells, neutrophils, monocytes, dendritic cells and macrophages.

On the other hand, the ADAPTATIVE IMMUNITY, is the response that the body develops after being exposed to an antigen before. It is like something that the body recognizes, and then "learns" how to act against it. Part of the adaptative immunity are: lymphocyte T and B, and the antibodies (substances called Immunoglobulins). The immunoglobulins (Ig) are glycoproteins present in the blood.

4 0
3 years ago
A child has sickle-cell disease (ss) but neither parent is ill. What must be true of her parents’ genotypes? The father is heter
Andreyy89

Answer:

Both parents are heterozygous carriers.

Explanation:

Both parents are heterozygous carriers. Sickle Cell Anaemia is usually referred to as a recessive condition since an individual must have two copies of the sickle gene in order to have the disorder.

Since neither of the parents is ill, both of them must be heterozygous carriers for the child to have the disorder

3 0
3 years ago
Read 2 more answers
A red flower (RR) and a red flower (Rr) have the same:
liraira [26]
The flower would be Genotype
3 0
3 years ago
Read 2 more answers
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