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3 years ago

Why do different animals have different lifespan expectancy?

Biology

2 answers:

Sonbull [250]3 years ago

8 0

Certain proteins are being selected by evolution

Anastaziya [24]3 years ago

3 0

Don't we all.
i guess because of our different habits and through how they've developed throughout centuries

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Historically many ideas concerning cells have been examined leaving three to be incorporated into the cell theory which of the f

Anika [276]

Answer:all life form contains more than one cell

Explanation: thats the only question that's not true

3 0

3 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!

~~~

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

2 years ago

Glucagon, a peptide hormone, is upregulated when blood sugar levels are low. Which molecules in or on the plasma membrane would

Arlecino [84]

Answer: Receptor protein.

Explanation:

The receptor protein on the cell surface would enable a cell to respond to glucagon. The glucagon binds to the GPCR on the liver and muscle cells and is known as glucagon receptor.

This receptor then stimulates cells to release glucose into the blood stream. Another hormones involved during this process is glucagon like peptide 1.

It works by binding to another GPCR which is GLP-1 receptor found on the pancreatic cells.

4 0

3 years ago

The virus infecting civilized only in the dorsal root ganglia on what part of the neuron is located in

Alja [10]

Dorsal root ganglia (DRG) are bundles of sensory neurons' somas (or cell bodies). Viruses such as Herpes infect DRG.

7 0

3 years ago

Match the words below to the appropriate blanks in the following sentences.

Masteriza [31]

Answer:

1. Malonyl CoA

2. Inhibits

3.fatty acil CoA

4. Carboxylase

5. Insulin

6. Synthesis

7. Glucagon

8. Oxidation

Explanation:

the oxidation of the mitochondria is blocked by the entry of fatty acid units, a reaction produced by stopping the carnitine acetyl transferase mediated by Malonyl CoA

A key intermediate in fatty acid synthesis ——-Malonyl CoA—-inhibits —-carnitine acyltransferase I, thereby blocking the entry of fatty acyl units into the mitochondrion for oxidation.

The substrates for fatty acid oxidation, ——Fatty acyl CoAs ——-, inhibit fatty acid synthesis by interfering with the polymerization of acetyl-CoA ——carboxylase ——.

Hormonal effects on adipocytes are opposed:——- Insulin ——-promotes fatty acid ———-synthesis ——-by several mechanisms;——Glucagon ——promotes fat breakdown and fatty acid ——Oxidation ——

8 0

3 years ago