A normal range in adults is generally considered to be 4.35 to 5.65 million red blood cells per microliter (mcL) of blood for men and 3.92 to 5.13 million red blood cells per mcL of blood for women. In children, the threshold for high red blood cell count varies with age and sex.

3 0

2 years ago

6. Which of the following statements about protists is true?

VikaD [51]

<h3>Answer:</h3>

The Correct answer is... C. Protists are a catch-all group for eukaryotes that aren't plants, fungi, or animals.

<h3>Explanation:</h3>

Let's break it down!

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A. Protists are all heterotrophic.

The given statement in answer choice A. is (partially correct) FALSE.

The following statement is TRUE... The protist is classified as either autotrophs or heterotrophs.

~~~

B. Protists can't live in freshwater.

The given statement in answer choice B. is also FALSE.

TRUE... Nearly all protists exist in some type of aquatic environment, including freshwater.

~~~

C. Protists are a catch-all group for eukaryotes that aren't plants, fungi, or animals.

The given statement in answer choice C. is CORRECT!

TRUE... As the catchall term for eukaryotic organisms that are not animals, plants, fungi, or any single phylogenetically related group, it is not surprising that few characteristics are common to all protists.

~~~

D. Protists are all parasitic.

The given statement in answer choice D. is (partially correct) FALSE.

TRUE... Many protists are pathogenic parasites that must infect other organisms to survive and propagate.

~~~

Therefore, the correct answer choice is C.

I hope this was helpful! (✿◠‿◠)

3 0

1 year ago

Some cells in the body have adapted to the task of absorption and excretion of large amounts of materials. in what ways have the

DIA [1.3K]

Many cells have specialized shapes that help accomplish the task of absorbing, excreting large amounts of materials. One important factor cell design for exchanging materials efficiently is to have a relatively large surface area compared to the volume of the cell. An intestinal epithelial cell, for example. Instead of being a large round blob, it is long and stretched out to have a large surface area where absorption and excretion can occur. I hope this helps.

3 0

2 years ago

A tyrosine kinase receptor is different from a G-protein linked receptor in that it can trigger

LenKa [72]

Answer:

a. more than one pathway at the same time.

Explanation:

Basically, RTK (receptor kinase receptor) principally activate many different transduction pathways about 10 or more and many cellular response in living cells.Thus, its activates more than one signal transduction pathways at once, (compare to G-protein ), and with this mechanisms it aids in coordination of some aspects of cell growth and cell reproduction .

6 0

3 years ago