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Contact [7]
3 years ago
13

which statements are true of heterogeneous mixtures? 1) they settle out. 2) the proportions of solute to solvent may vary. 3) th

e solute is evenly distributed throughout. 4) they are composed of two solvents and two solutes. a.1 and 2 b.2 and 4 c.3 only d.2 only
Biology
2 answers:
bixtya [17]3 years ago
8 0

Answer is A just took the test

Sindrei [870]3 years ago
5 0
The statements that are true of heterogeneous mixtures are: they settle out and the proportions of solute to solvent may vary. The correct answer is option A. 1 and 2. Heterogeneous mixtures are considered mixtures wherein the components are not uniform and still retain their properties. Characteristics of heterogeneous mixtures are: the ratio of solute and solvent is not equal, the substances can be separated physically and they still retain their properties even if mixed with another substance. 
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Eric places some room-temperature strawberries into his freezer. Which of the following correctly describes what happens to the
Arisa [49]

Answer:

The heat from the strawberries transfers to the freezer and causes the strawberries to freeze.

Explanation:

When Eric-palces some room temperature strawberries into the freezer, he is changing the temeprature of the strawberries. When the strawberries are in the room tempertaure, they are absorbing certain amount of heat.

When they are placed in the freezer they are releasing the heat to the environment and this leads to condition called as phase change. Due to this phenomenon, the heat from the strawberries transfers to the freezer and causes the strawberries to freeze.

5 0
3 years ago
Read 2 more answers
Characteristics that are always present in living organisms are?
Jlenok [28]
Characteristics such as <span><span>
1.       </span>Irritability. Organisms react to certain stimuli in their habituated environment in order to survive.</span> <span><span>
2.       </span>Reproduction. This is the natural mechanism of living organisms to produce offspring or seeds for the next generation.</span> <span><span>
3.       </span>Growth. Every organisms undergoes the process of development and growth, where they become for capable in survival.</span>
 <span><span>4.       </span>Excretion. As living organisms utilize the natural resources and undergoes bodily processes, waste is created and is toxic which is needed to be out of the system.</span>
 <span><span>5.       </span>Movement. Survival means being able to adapt and move to a certain location where you can grow and hunt.</span>
 <span><span>6.       </span>Respiration. All organisms –fish, reptiles, mammals, or even algae undergoes cellular respiration in order to do its functions.</span> <span><span>
7.       </span>Nutrition. Living organisms need food and for the plants, make food in order to function. </span>



7 0
3 years ago
genetic code in the nucleus b. main component in a ribosome c. translated with introns removed d. attached to amino acids e. tra
KiRa [710]

Answer:

a.genetic code in the nucleus- DNA

b. main component in a ribosome- rRNA

c. translated with introns removed- mRNA

d. attached to amino acids -tRNA

e. translated including introns-  pre-mRNA

Explanation:

a. DNA- is a nucleic acid molecule that acts as a genetic material in the organisms. In eukaryotes, the DNA molecule is present in the nucleus of the cell .

b. rRNA- is a molecule formed by the transcription but does not undergo translation and is directly involved in the formation of the ribosome structure which provides the site for the protein synthesis.

c. mRNA- is the RNA formed from the DNA by transcription which contains the message for the formation of the protein molecule. The mRNA is formed after the modification like splicing which removes the non-coding sequence.

d. tRNA-transfer RNA is involved in the translation of mRNA as it brings a specific amino acid to the peptide after it recognizes the codon.

e. pre-mRNA- is the mRNA molecule that has not undergone any modification and thus contains the non-coding sequence also.

3 0
4 years ago
5) Pollution of our waters from contaminated sediments can have an impact on all of following except?
kondaur [170]

Answer:

population density

Explanation:

i got it right on usa test prep

5 0
2 years ago
What type of plate boundary is illustrated in the image?
noname [10]
A convergent boundary
5 0
3 years ago
Read 2 more answers
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