Which criteria are responsible for deciding whether a heterogeneous mixture is a colloid or a suspension?

Answers

Answer 1

Answer: The main difference between a colloid and a suspension mixture is the size of the solute particles. Colloids have solute particles that are around 10-1000 angstroms big. They are considered to be intermediate in size because they are bigger than solutes in homogeneous mixtures, but are smaller than suspension mixtures. Colloids tend to form cloudy, yet uniform solutions. The cloudiness of the mixture is caused by the solute particles suspended or floating in the solvent.

Suspension mixtures have solute particles that are greater than 10,000 angstroms. The particles are so big that they can no longer be evenly distributed, so they settle at the bottom of the solution. In suspension mixtures, there is a visible line between the different components of the mixture.

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if a cell at metaphase of mitosis contains 32 sister chromatids, how many chromosomes will be present in a g1 cell?

Answers

If a cell at metaphase of mitosis contains 32 sister chromatids, chromosomes will be present in a g1 cell - 16 chromosomes.

During interphasechromosomes are fully or partially decondensed, in the form of chromatin, which consists of DNA wound around histone proteins (nucleosomes).

In G1, each chromosome is a single chromatid.
At the G1 stage, the cell would have 16 chromosomes.
Each chromosome has a single chromatid for a total of 16 chromatids in g1 cells.
in metaphasesister chromatids are present and the number of chromosomes is 2n.

Thus, If a cell at metaphase of mitosis contains 32 sister chromatids, chromosomes will be present in a g1 cell - 16 chromosomes.

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Answer:

Explanation:

because we are divid 32/2

What is the mechanical advantage of a machine that applies a force of 1000 N to an object when a force of 500 N is applied to the machine?

Answers

The mechanical advantage of the machine in the problem is 2. By definition, the mechanical advantage of a machine is equivalent to the ratio of its output force to its input force. Since it applies a force of 1000 N to an object, that is its output. Also, since a 500 N force is applied to the machine, that is its input. So 1000/500 = 2.

Answer: 2

Explanation:

The mechanical advantage of a machine is defined as the amplification of the force produced when using a machine or a tool.

In mathematical terms, it is the ratio of the output force to input force and, the formula is :

MA = Fo/Fi

Where MA= mechanical advantage

Fo= Output force

Fi = input force.

According to the question, Fo= 1000N

Fi= 500 N

Therefore, MA= 1000/500 = 2

what fossil evidence indicates that evolutionary change may have occurred within a time frame known as gradualism

Answers

The fossil record ! Hope it helps!

Answer:

Phylogeny

Explanation:

When a chromosome pair fails to separate correctly in meiotic division, what is it called?a. Chromosome deletions
b. Crossing-over
c. Nondisjunction
d. Trisomy

Answers

C. Nondisjunction.
Nondisjunction is the failure of one or more pairs of homologous chromosomes or sister chromatids to separate normally during nuclear division. This can result in deformities in a new-born such as Down Syndrome, due to lack of chromosomes in the body.

Organisms can have positive or negative impacts on the ecosystem they live in. The cane toad, or Rhinella marina, was introduced to the Hawaiian Islands in 1932 by sugar cane farmers. Farmers released the toads in their crops to help control pests that were damaging the sugar cane. The cane toad has few natural predators, as it secretes a poisonous toxin from its skin that deters larger organisms from eating it. As a result, the cane toad population thrived and grew to number hundreds of thousands by 1935. width="379" Which role does the cane toad play in the Hawaiian Islands?a. native species
b. invasive species
c. uncontrolled species
d. endangered species

Answers

The answer is b. invasive species.

Invasive species are species that are not native to specific ecosystem, but they have a capability to spread widely through the ecosystem, This way they can threaten native species of the ecosystem or cause environmental harm.

Answer:

Explanation:

Lack of ______ has been linked to increased risk for autoimmune diseases. zinc iron vitamin C vitamin D

Answers

Lack of vitamin D has been linked to increased risk for autoimmune diseases.
Hope that helped you.

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