BIOLOGY COLLEGE

When faced with a sudden drop in environmental temperature, an endothermic animal will ________. experience a drop in its body temperature
wait to see if it goes lower
increase muscle activity to generate heat
add fur or fat to increase insulation

Answers

Answer 1
Answer:

Answer: The correct answer would be increase muscle activity to generate heat.

Explanation:

Endothermic animals are those which maintain their body temperature mainly by their metabolic activity irrespective of environmental heat.

In case, there is a drop in environmental temperature then endothermic animals increase their metabolic activity and metabolize sugars and fats at a faster rate.

It release more heat and increase the body temperature.

One the various methods for increasing metabolism is increase in muscle activity such as done in shivering. Shivering increases muscle activities which increases body temperature.


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HIGH SCHOOL

Samuel wants to plant cuttings from his rose plant. What should he do to hasten the rooting process?

Answers

Spray auxin at the base of the rose cutting. Hope that helps :)

the correct answer choice is "C"

HIGH SCHOOL

It is thought that organelles of eukaryotic organisms, such as mitochondria and chloroplasts (in plant cells) came from A) protists. B) mutations. C) prokaryotes. D) random events.

Answers

Answer: C) prokayotes

Explanation:

According to Lynn Margulis endosymbiotic theory, cell organelles of eukaryotic organisms, such as mitochondria and chloroplasts arise by the combination of two prokaryotes. An aerobic bacteria, were engulfed by anaerobic bacteria. They live together as symbiotic partners for mutual benefits. The aerobic bacteria take care of the toxic oxygen for the anaerobic bacteria, in return the anaerobic bacteria would ingested food and protected the aerobic bacteria. Thus, a eukaryotic cell with a double-membrane bound organelle is formed.  

Hi there!!



The correct answer is C) Prokaryotes.





Hope this helps!!



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-Ans-

HIGH SCHOOL

​t cells bind to antigens that have been engulfed, digested, and presented on the surface of a(n) ____.

Answers

Answer;

-Antigen presenting cells

Explanation;

-Helper T cell and inflammatory T cell TCRs recognise epitopes displayed by MHC class II molecules on the surface of antigen-presenting immune cells, including: macrophages that engulf foreign particles such as bacteria; dendritic cells that present antigen to T cells; and B cells that produce antibodies.

-Antigen-present cells APCs engluf antigens, present fragments of antigens to be recognized by T cells . Major types; dendritic cells in connective tissues and epidermis, macrophages in connective tissues and lymphoid organs &B cells.

MIDDLE SCHOOL

In order for a ________ to form, the body must not be eaten or destroyed by erosion and other natural forces.

Answers

In order for a fossil to form, the body must not be eaten or destroyed by erosion and other natural forces.

HIGH SCHOOL

How could a bacteria become resistant to your tetracycline? Your answer should include the concepts of mutation and natural selection.

Answers

Answer: Tetracyclines are protein synthesis inhibiting antibiotics that kill bacteria by preventing it to translate proteins in the ribosomes. They bind to 30s ribosomal subunits, inhibiting protein expression and translation.

Explanation:

Tetracycline drug resistant bacteria inherits genes from a parent bacterial cell that was exposed to the drug. As a result of exposure to tetracycline, the parent bacterial cell goes through a random mutation that can resist and survive this induced environmental pressure. The random mutation protects its ribosomes from the drugs inhibitory effect.

As evolution by natural selection explains, it then transfers that gene or mutation through horizontal gene transfer to its offspring. It occurs in a way that any daughter bacterial cell will become naturally resistant and survive in the presence of tetracycline.

HIGH SCHOOL

What is one reason funding has such an important effect on scientific research?

Answers

funding targets specific areas of research ----- Gradpoint

Well, experimentation can be really expensive, so when funding is provided it gets rid of a lot of obstacles.
HIGH SCHOOL

The cytoplasm in a cell carries out a function similair to which human system

Answers

Cytoplasm holds all the organells in place
Fat does the same thing but thoughout the human body
HIGH SCHOOL

An organism that contains foreign dna, which was inserted into its own genetic material, is called

Answers

An organism that contains foreign DNA, which was inserted into its own genetic material, is called transgenic. 
MIDDLE SCHOOL

The measure of the average kinetic energy of the particles of a substance is the ___

Answers

The measure of the average kinetic energy of the particles of a substance is the temperature.
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