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3 years ago

What are some common themes of biology?

2 answers:

7 0

Adaption and evolution, biological systems, energy and life, form and function...(i hope its right bc honestly i dont really know)

EastWind [94]3 years ago

6 0

Hey friend!
Let's figure this out!

1. Evolution

Evolution is an important theme in biology. If you go looking for it, you will be able to find an aspect of every living creature out there that is in fact a product of evolution. How did life get to be the way that it is? Evolution, that's how.

2. Levels of organization

How do systems, processes, and events at one level of organization affect other levels? Are units at one level just the sum of units at other levels, or are there emergent properties unique to certain levels? As you may have guessed by our strategic bolding, the latter choice is the answer.

3. Regulation

Let’s face it: Life is a control freak. Everything is regulated, and when regulation fails, the results are generally not good. How does regulation work at the different levels of organization, such as molecules, organs, and ecosystems?

4. Structure and function

How do biological structures relate to the functions they perform? Is a specific structure ideal or optimal for that function? If not, how might this less-than-optimal structure be explained by evolution?

5. Unity and diversity

Certain structures and processes may be common to many or all life forms, but Nature has modified them in diverse ways, resulting in a tremendous range of variation.

This list of themes isn’t complete yet, and as you bask in your newfound, undying love of biology, you will no doubt come up with themes of your own. Try to keep these ideas in the back of your mind…preferably forever, but if that’s not possible, then at least as long as you’re learning biology. They will enable you to keep everything you learn in perspective so that you can see how all the little tidbits of information fit into the big picture. That’s what biology is all about: little, teensy tiny tidbits and how they fit into a bigger picture. Oh, and organization, organization, and more organization.

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Mutations are relatively uncommon because

sergiy2304 [10]

I believe it's D .DNA repair enzymes often repair errors.

I believe this because enzymes remove incorrect bases with a few surrounding bases, which are replaced with the correct bases with the help of a DNA polymerase and the template DNA. When replication mistakes are not corrected, then it may result in mutations, which sometimes can have serious consequences.

7 0

3 years ago

What is embedded in the phospholipid bilayer that helps in the movement of larger molecules ?

gladu [14]

Answer:

$\boxed {\boxed {\sf A. \ Channel/Transport \ proteins}}$

Explanation:

The phospholipid bilayer is also known as the cell membrane. It covers cells and regulates the transport of substances. Certain ones can pass and others cannot, depending on certain factors like size and polarity.

Smaller substances tend to diffuse or move across the membrane quite easily. However, larger molecules have a much harder time. Many depend on special proteins embedded in the membrane. These are called transport proteins and they form a channel so large molecules can still move in or out of the cell.

So, salt, water, and fats do not contribute to the movement of larger molecules, but channel or transport proteins do and choice A is correct.

3 0

2 years ago

X has successfully been transmitted to your body; you are now infected. All of the following among A-D are possible consequences

Natasha2012 [34]

The complete options to the question includes:

A.You never show any symptoms of disease and there is no sign of the pathogen in your body.

B.You exhibit mild symptoms of disease and the levels of the pathogen in your body are quickly reduced and eliminated.

C.You succumb to the worst effects of the disease but survive due to administration of antimicrobial agents.

D.You never show any symptoms of disease, but the pathogen persists in your body.

E.There are no exceptions, A-D are all plausible outcomes.

Answer: The correct option is A (You never show any symptoms of disease and there is no sign of the pathogen in your body).

Explanation:

Infectious diseases occurs when an individuals system is invaded by pathogenic microorganisms (virus,bacteria,fungi and parasite). These microorganisms may or may not cause disease but this depends on the healthy state of the host. They can also be transmitted from one person to another.

To explain the options why all are plausible outcomes when X has successfully been transmitted into the body except A includes:

B) option B can occur when the immune system of the host is able to combat X.

C.) Option C can occur when antimicrobial is given to suppress the activities of X

D) option D can occur when the individual may become an asymptomatic carrier of X. ( Individual shows no symptoms and signs of disease caused by X but the pathogen is still present in the body).

But option A is not possible as X must be present to show there was a transmission.

6 0

2 years ago

How does anaphase 1 in meiosis differ from anaphase in mitosis

slega [8]

Answer:

The differecnce is in the amount of DNA present and what type. In meiosis you have a diffrent amount of DNA than mitosis and the DNA in meisosis has done crossing over aand is different than the original. Mitosis is exactly the same

Explanation:

3 0

3 years ago

How does the cell wall contributes towards maintaining homeostasis in the cell

erma4kov [3.2K]

Answer:

The water wants to flow from the higher concentration, which is outside of the cell, to the lower concentration, which is inside of the cell. The cell membrane helps to regulate and slow down the flow of water into the cell. This is yet another way that the cell membrane helps maintain homeostasis.

I hope it helps ❤️

3 0

3 years ago