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Ber [7]
3 years ago
8

Using a broom to clean sidewalks and driveways is a way to reduce water pollution

Biology
2 answers:
zvonat [6]3 years ago
6 0

Answer:

true

Explanation:

h

yulyashka [42]3 years ago
5 0
This can be possible because we no longer need to use a large hose and spray water on the roads and let the dirty water drain away back into seas and rivers and create water pollution. However, this methods requires a large amount of labor and time.
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Why cant blue color be evolved by living organisms
mr Goodwill [35]
Because blue pigment in nature
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3 years ago
Antibodies are composed of two types of peptides, heavy chains and light chains. One of the major classes of antibody molecules
timurjin [86]

Answer and Explanation:

a. form the antigen-binding site ⇒ both chains

The antigen-binding site is formed by one hypervariable region of the light chain (VL) and one hypervariable region of the heavy chain (VH). So, both type of chains contributes to antigen recognition.

b. contain multiple variable domains ⇒ none

Both chains - light and heavy - contain <u>only one</u> variable domain (VL and VH).  

c. are found in the Fab fragment ⇒ both chains

The Fab fragment is composed of portions of both light and heavy chains: each portion contains one variable domain and one constant domain. The Fab fragment binds specifically the antigen.  

d. are found in the FC fragment ⇒ heavy chains

The Fc region is composed of portions of heavy chains (CH² and CH³), so it contains constant domains.  

e. contain only one constant domain ⇒ light chains

Each light chain contains one variable domain (VL) and one constant domain (CL).  

f. contain multiple constant domains ⇒ heavy chains

Each heavy chain contains three constant domains: CH¹, CH² and CH³.  

g. contain only one variable domain ⇒ both chains

Both light and heavy chains contain one variable domain. The difference is given by the number of constant domains: light chains have 1 constant domain while heavy chains have 3 constant domains.

8 0
3 years ago
What problems would you expect to observe in an ecosystem without producers? Be sure to answer this question in paragraph form u
Cloud [144]

The producers are the main source of the food production in the ecosystem. The producers are the organism, which convert the energy from the sunlight into the chemical energy. The consumers use this chemical energy for carrying out the metabolic processes in their body.

Without producers, the consumers cannot obtain their energy. Hence, the ecosystem without any producer would not survive.

8 0
3 years ago
Please help me!!! 26 POINTS !!!!<br> what would happen to an ecosystem without nitrifying bacteria?
Vera_Pavlovna [14]

Microbes. Bacteria, for example, convert nitrogen and carbon dioxide from the air into usable components that plants and animals can use as essential building blocks. A loss of all microbes would be terrible news for living organisms that can't create or take in these essential nutrients on their own.

3 0
3 years ago
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PLEASE HELPPPPPPPPPP!!!!!!! Explain how ATP and ADP act as allosteric regulators of enzymes that are responsible for ATP product
lozanna [386]

Answer:

The molecules that bind cellular respiration enzymes act as signals, giving the enzyme information about the cell's energy state. ATP and ADP are examples of molecules that regulate cellular respiration enzymes. ATP, for instance, is a "stop" signal: high levels mean that the cell has enough ATP and does not need to make more through cellular respiration.

This is a case of feedback inhibition in which a product feeds back to shut down its pathways.

6 0
3 years ago
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