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soldier1979 [14.2K]
3 years ago
9

-

Biology
2 answers:
Andru [333]3 years ago
7 0

Answer:

C. Both (a) and (b)

Explanation:

Hunting, destroying habitats, polluting and introducing non-native species can cause extinction.

elixir [45]3 years ago
6 0
The answer is C, both a and b
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A man is accidentally exposed to a toxin which binds irreversibly and noncompetitively to pyruvate dehydrogenase. a likely conse
olga_2 [115]

Answer;

The likely consequence of this ingestion is A decrease in aerobic respiration and an increase in anaerobic respiration.

Explanation;

-Pyruvate dehydrogenase is the enzyme that mediates pyruvate decarboxylation. This step is the critical link between anaerobic and aerobic respiration. With this link broken, cells would be limited to anaerobic respiration. Thus, there will be a decrease in aerobic respiration.

- Lactic acid is a byproduct of anaerobic respiration. With pyruvate decarboxylation blocked, the cell would likely see an increase in such products.

-Also, since, Acetyl-CoA and NADH are products of pyruvate decarboxylation. Blocking this enzyme would lower these concentrations.

5 0
4 years ago
What does it mean when the host and the parasite are always in this really intimate dance together?
Stells [14]

The phrase, parasite and the host are always in intimate dance together depicts the co-evolution of the parasites according to the host.

In case, the host adapt to a certain character, the dependent parasite also need to evolve in order to survive. So, any change in the host's behavior cause changes in the behavior of the parasite. As, in the intimate dance, if a dance partner changes his position or moves, the associated partner also reacts according to the changes and matches with the other partner, so, that they always remain intimate.

7 0
4 years ago
Rate each question from 1 to 5 ❑How much do you depend on natural ecosystems that you use for recreation (camping, fishing, hunt
sdas [7]

Answer:

❑How much do you depend on natural ecosystems that you use for recreation (camping, fishing, hunting, hiking, swimming, boating)?  4

❑How much do you depend on natural ecosystems for the food you eat? 5

❑How important is preserving natural ecosystems to you? 5

❑How willing are you to sacrifice things in your life to make sure that natural ecosystems stay unharmed in the future? 4

Explanation:

The questions are closely related to ecosystemic services and how humans make use of it. Let us first review theoretical concepts, and then discuss the rating of the questions.

Ecosystem services refer to all the benefits that human beings can get from ecosystems, not only for survival but also for good life quality. There are four types of ecosystem services:

• Provision or supply:

These are the products obtained by nature to be used or consumed, directly or with previous processing. Among them, we might mention food, clear freshwater, fertile soils, geotic materials, raw materials (used for clothing, construction), renewable fuels, biochemical compounds, pharmacological/medicinal resources, among others.

• Regulation:

Refers to ecological processes that improve life. Among others, we might mention climate regulation, CO² absorption, water purification, air purification, erosion control, natural disaster avoidance such as flooding, soil fertility maintenance, waste recycling, pest/plague control, etc.

• Cultural:

Refers to not the material benefits. Ecosystems also provide a recreational place or area to spend time, learn, enjoy spiritual/religious space, and are a source of inspiration. It is considered to be cultural patrimony and the source of scientific knowledge.

----------------------------------------------------------------------------------------------------------

I answered the questions from my personal point of view, and considering 5 as the most important topic, and 1 as the less important. So, from most important to less important is 5, 4, 3, 2, 1.

❑How much do you depend on natural ecosystems that you use for recreation (camping, fishing, hunting, hiking, swimming, boating)?

Probably, we as species, do not need these activities to survive. However, we need them to have good mental health. These are activities that we enjoy and that produce satisfaction. Whenever we do things that we enjoy our organism secretes hormones that make us feel happy. This feeling is important when people are stress about any personal situation. So, this question does not get the highest rate, but it gets a significant one, a 4.

❑How much do you depend on natural ecosystems for the food you eat?

Basically, we depend on nature and the ecosystem to get food and any kind of supply. If the ecosystems are damaged and altered, there is a general disbalance, and every form of life is affected. Some species might even get extinct. If we keep damaging the environment as we are doing currently, we will get to the point of not having any supply available to survive. So this is one of the most important questions, which gets the highest rate, a big 5.

❑How important is preserving natural ecosystems to you?

This question is closely related to the anterior one. It is very important for us as a species to realize that we depend on nature 100%, that we need to take care of it and preserve ecosystems all around the world. With no healthy and equilibrated ecosystems, we do not get to survive. So this is the other question that gets the highest rate, 5.

❑How willing are you to sacrifice things in your life to make sure that natural ecosystems stay unharmed in the future?

This one is kind of difficult to answer, We could say that we are 100% willing to sacrifice to make sure ecosystems stay unharmed. However, we are so used to consumption, technology, confort, an easy lifestyle, and etc, that would be really difficult for us to sacrifice everything that we are used to. Just imagine yourself giving up your cellphone or your computer. Technology is one of the most polluting industries in the world. But we depend so much on it, that seems almost impossible to imagine us without it. This is why my score for this question is a 4. Personally, I surely would sacrifice too many useful things, but I find it hard to sacrifice some others.  

8 0
3 years ago
In the α helices of transmembrane proteins, the hydrophobic side chains face which direction?
igomit [66]

In the α helices of transmembrane proteins, the hydrophobic side chains face the outside of the membrane-spanning helix.

Transmembrane proteins are a type of integral membrane protein that spreads throughout the cell membrane. Many transmembrane proteins act as gates that allow the transport of certain substances across the membrane.

Transmembrane proteins basically act as gates or docking sites that allow or prevent substances from crossing the cell membrane.

Transmembrane proteins penetrate the entire plasma membrane. Transmembrane proteins are found in all types of biological membranes. Monotopic proteins are permanently attached to the membrane from only one side

Learn more about transmembrane proteins here:brainly.com/question/16083238

#SPJ4

3 0
2 years ago
Changes in the trilobite exoskeleton can be attributed to ____.
valina [46]
D. Both A and B is the correct answer
5 0
3 years ago
Read 2 more answers
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