BIOLOGY MIDDLE SCHOOL

Select all that apply.Vectors that some protozoa use to transfer disease are _____.


ticks
flies
mosquitoes
fleas

Answers

Answer 1
Answer:

Answer:

Flies, mosquitoes and fleas

Explanation:

Living organisms which spread infectious diseases from infected to healthy humans or from animals to humans are called vectors. Flies, fleas and mosquitos are the vectors which are used by some protozoa to transmit diseases for examples sand flies are the vectors of Leishmania, a unicellular parasitic protozoan. Plasmodium, a parasitic protozoan cause malaria which is transmitted by mosquitos.

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32. Explain why it is hard to classify organisms in Kingdom Protista? What are the definincharacteristics of the kingdom?

Answers

Answer:

There are some organisms which are not classified in plants and animals kingdom because there are some animals which has the characteristics of both plants and animals. For example, a specific organism make their own food like plants and also move from one place to another like animals.

Characteristics of kingdom protists :

1) They are made of one cell.

2) They are eukaryotic cell.

3) Some are autotrophic and some are heterotrophic organisms.

Is mRNA a carbohydrate gene or chromosome

Answers

I think it's a gene, I definitely don't think it's a carb.

Do you think you can accurately determine a person's genotype by observing his or her phenotype?

Answers

The two elements are almost independent. For example, you could get born with blonde hair yet you paint it red. So noone knows what was the real one.

Which statement BEST describes a relationship between the organisms in the food web shown above?

Answers

Answer:

Arthropods decreases, Birds decreases

squirrels and chipmunks compete for the same food source. what is most likely to happen to the degree of competition between these 2 species if their food became scarce?

Answers

The competition will increase until the population size decreases because of the lowered carrying capacity of the environment. Then it will return to normal competition

Answer:

The correct answer would be increased in the degree of competition for the same food source.

Explanation:

Squirrels and chipmunks already share a common food source and competing for it. So, if the food became scarce there will be an increase in their competition for the food.

Squirrels and chipmunks will fight and display for the food as it is not in enough and there was already competing for the food.

Thus, the correct answer would be increased in the degree of competition for the same food source.

29)

 Which feature do prokaryotic and eukaryotic cells share?

Answers

♥ They ALL have cells that have a plasma membrane, ribosomes, DNA, and cytoplasm. This is a feature that they share.
♥Hope this helps!♥
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