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Amanda [17]
3 years ago
15

If a solid contain some particles that amount and 50°C and other particles amount mount at 110°C what must be true about the sol

id?
Biology
1 answer:
mina [271]3 years ago
4 0

Answer: The solid is a mixture

Explanation:

Here's the complete question:

If a solid contains some particles that melt at 50°C and other particles that melt at 110°C, what must be true about the solid?

A. The solid is an element.

B. The solid is a mixture.

C. The solid is a pure substance.

D. The solid has three boiling points.

It should be noted that an element consist of an atom but in this scenario, there are different particles that also have different melting points. Therefore, it's not an element, but rather a mixture.

Also, the solid in this case is not a pure substance and doesn't have three boiling points.

Therefore, the correct option is B.

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which represents the optimal condition for most enzymes in the small intestine? 1. pH12 2.45°C 3. pH10 4.pH2 5.37 °C
mojhsa [17]

Answer:

5.37 °C

Explanation:

The optimal condition for most enzymes in the small intestine is 37 °C.

Enzymes are responsible for mediating several biological processes in the human body. The optimal condition for enzymes in the small intestine has an optimum pH of about 7.5 and the temperature is 37 °C, which is the normal body temperature of the human body.

Hence, the correct option is "5. 37 °C".

6 0
3 years ago
The gene frequency for a dominant allele is 0.68 and the recessive allele is 0.39. What percent of the population has a homozygo
Alinara [238K]

Answer:

15.21 %

Explanation:

If we recall the basic formula of Hardy-Weinberg's equilibrium ; we have the following below:

p + q = 1

p² + 2pq + q² = 1

where;

p = frequency of the dominant allele in the population

q = frequency of the recessive allele in the population

p² = percentage of homozygous dominant individuals

q² = percentage of homozygous recessive individuals

2pq = percentage of heterozygous individuals

Given that p= 0.68 and q = 0.39

the percentage of the homozygous recessive genotype (q² ) will be

(0.39)² = 0.1521

= 0.1521 × 100

= 15.21 %

∴ the percentage of the population that has a homozygous recessive genotype = 15.21 %

5 0
3 years ago
What happens during G0?
Ket [755]

The cell goes in a "dormant phase". A good example is the neuron. Neurons are very metabolically active but they don't divide so they go into a phase that doesn't include growth or replication of genetic material.

6 0
2 years ago
Two students are working together to Gram stain a mix of Gram positive and Gram negative cells. One of the students accidentally
Rasek [7]

Answer:

C.Both Gram positive and Gram negative cells would appear purple.

Explanation:

Gram staining is a technique used to differentiate bacteria to two main groups based on their difference in cell wall components.

Crystal violet, decolorizer(ethanol) and a counter stain are used.

Gram positive bacteria have a thicker peptidoglycan layer hence they will retain the crystal Violet stain even after decolorization. They will stain purple

Gram negative will stain pink due to losing the initial stain and taking up the counter stain after decolorization.

Therefore, if water is used instead of ethanol. Both bacteria will retain crystal violet stain in their cell wall.

6 0
3 years ago
HELP BRAINLIEST! 25 POINTS
maks197457 [2]

Answer:

true .......... hopefully

6 0
2 years ago
Read 2 more answers
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