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vitfil [10]
3 years ago
11

Which of the following best describes the matter present in an ecosystem?

Biology
2 answers:
svp [43]3 years ago
5 0

Answer:

D

Explanation:

When an organism reproduces, new matter is added to its ecosystem, is the correct answer.

pshichka [43]3 years ago
5 0

Answer: It's is the second one. The waste materials generated by one organism are often reused by other organisms.

Explanation: Mass, or matter, is conserved in all physical and chemical changes. Matter is not created or destroyed within ecosystems, it only undergoes physical or chemical changes. One example of this process is that the waste materials generated by one organism are often reused by other organisms as food or nutrients.

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In vertebrates, what joins the brain to the rest of the body?
Vladimir79 [104]
<span>a. spinal cord


Spinal Cord is the part of the nervous system responsible for connecting the brain to the body.
</span>The nervous system is divided into two groups. The Central Nervous System and the Peripheral Nervous System.
The Central Nervous System involves the Brain and the Spinal Cord. Its contains the integrative and control centers.

<span>The Peripheral Nervous System involves the cranial nerves and spinal nerves. It is composed of the communication lines between the Central Nervous System and the rest of the body.</span>
4 0
3 years ago
Biological muscle cells can be thought of as nanomotors that use the chemical energy of ATP to produce mechanical work. Measurem
bearhunter [10]

Answer:

The answer is 6.4 × 10^{-20} Joules

Explanation:

This question wants to effectively test your knowledge of the names of the negative powers of 10, so first of all, before calculating, let me explain what each of the symbols in the units given in the question means:

Force = 8.0 pN = 8.0 × 10^{-12} N

displacement = 8.0 nm = 8.0 × 10^{-9} N

Now let us calculate the work.

work = Force × Displacement

work = 8.0 × 10^{-12}  × 8.0 × 10^{-9} = 64 × 10^{-21}

= 6.4 × 10^{20} Joules (in standard form)

7 0
3 years ago
What hormone inhibits the release of growth hormone?.
Arada [10]
Somatostatin from hypothalamus inhibits the glands growth hormone
7 0
2 years ago
Select the five major mechanisms of antimicrobial resistance. Check All That Apply
Rudik [331]

Answer:

All the given statements are correct except b.

Antimicrobial resistance (AMR) refers to the ability of a microorganism to grow in the presence of drug or a chemical that would normally limit its growth or kill it.

It makes it difficult for the existing drugs to eliminate the infection as they become less effective against the microbe.

There are five major mechanisms by which a microbe attains resistance against antimicrobial chemical or drug:

  1. Drug modification or inactivation: A microbial enzyme inactivates the antimicrobial agent. For example, few bacteria produce β-lactamases which provide multi-resistance against β-lactam antibiotics such as penicillin, cephalosporin etc.
  2. Alteration or modification of target site: An altered target site prevents the antimicrobial agent from binding to its target. For example, alteration of penicillin binding protein (PBP) in Methicillin-resistant <em>Staphylococcus aureus </em>(MRSA).
  3. Alteration of metabolic pathway: The microbe uses an alternative pathway to circumvent the blocked pathway. For example, sulfonamides-resistant bacteria started using preformed folic acid in place of  para-aminobenzoic acid (PABA).
  4. Decreased drug accumulation: Microbial efflux pumps remove the antimicrobial agent (before it could do any damage) by pumping it out of the cell.
  5. Decrease in cell permeability: The permeability of the microbial envelope to the antimicrobial agent is decreased
8 0
4 years ago
Which food contains the material needed to build muscle, but does not contain the macromolecules that give quick energy
Dahasolnce [82]

The answer is steak.


It’s because it contains lots of protein (used for muscle growth and repair) but no sugars (which is released quickly)

5 0
3 years ago
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