Which factors affect natural selection?
1. inheritance, isolation, adaptation
2. variation, overpopulation, adaptation
3. isolation, overpopulation, speciation
4. variation, inheritance, speciation

Answer:

A. temperature of the reaction

B. amount of enzyme

E. pH of the reaction

Explanation:

Temperature should be kept constant because enzymes operate at different activity rates depending on the temperature. The same goes for the pH as well with different enzymes having different optimal pH levels.

The amount of enzyme should be kept constant as well because different concentrations of enzymes can determine how fast the reaction will occur.

Essentially anything that could affect enzyme activity apart from substrate concentration should be kept constant.

C. 70 to 100 per minute

Answer:

after mitosis there are two daughter cells, which are genetically identical to the parent cells.

Explanation:

The daughter cells are identical to the parent cells because the cell copies/ replicates its chromosomes. Then it splits the chromosomes equally so that each daughter cell has a complete set of chromosomes.

Parent cell give rise to daughter cell being genetically identical because of it replicates the DNA, so after mitosis, both daughter cell is genetically identical to the parent cell.

Mitosis results in the formation of two identical daughter cells, each with the same number of chromosomes as the parent cell.

Meiosis, on the other hand, produces four distinct daughter cells, each with half the amount of chromosomes as the parent cell. Because DNA replicates to complementary to other DNA strands.

The mature cell that is undergoing cell division is known as the parent cell or the mother cell, and the new cells that emerge at the conclusion of the cell division are known as daughter cells.

Therefore due to DNA replication daughter cell is genetically identical to the parent cell after mitosis.

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Answer:

this

The Plasma membrane maintains the homeostasis throughout a cell because it filters what substances go in and out of the cell. If there is too much of a substance in a cell the plasma membrane quickly disposes it and when there is not enough of a substance in a cell the plasma membrane lets the substance in.

or this

A major role of the plasma membrane is transporting substances into and out of the cell. The plasma membrane is selectively permeable, allowing only certain substances to pass through. ... Cell transport helps cells maintain homeostasis by keeping conditions within normal ranges inside all of an organism's cells.

one of them should have been the answer ;)

Answer:

Which type of star cluster forms from tightly packed groups of older stars?

binary

eclipse

open

Its c

Explanation:

I did the quizz

Answer:

Cell membrane helps to enclose the cell organelles and cytosol inside a cell. ... A cell wall is a ridgid, protective layer and it covers the cell membrane. For plants, cell walls are mainly made up of cellulose, while a cell wall in bacteria is made up of peptidoglycan,and for fungi it is made up of chitin.

Explanation:

The structural changes to DNA affect the structure and function of an organism, such as in a mutation. When the mutation occurs, the DNA structure changes, which in turn affects gene function.

When a mutation occurs in the gene segment, then the structure and function of the gene are affected, especially when the exon portion of the gene is affected, and the mutation can be caused either by radiation or any other chemical factors and can cause many types of mutation, such as the nucleotide mutation, base mutation, etc. Apart from that, gene function is also affected when the gene is present in the heterochromatin region.

Hence, structural changes to DNA affect the structure and function of an organism, such as in a mutation. When the mutation occurs, the DNA structure changes, which in turn affects gene function.

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Answer:

Blue Ink patches are observed on the leaves of the plant. Also, on cutting across the stem of the plant, the red color of the solution is found along the length of the stem.

The above observation shows that the stem of the plant conducts water through its length to the leaves of the plant.

Explanation:

The leaves of plant obtain water and minerals from the soil through the roots of the plant. The water is conducted by the stem of the plant from the roots to the leaves of the plant where they are needed for photosynthesis as well as for cooling the plant. The xylem tissue in plants is responsible for conducting water to the leaves of the plant from the roots of the plant through the stem.

The conduction of water from the roots to the leaves of the plant is maintained by capillary action as well as by transpiration pull. Transpiration pull refers to the pull of water by the transpiration action taking place in the leaves of the pant, whereby water evaporates from the leaves of the plant through the opening in the leaf of the plant.

When the blue ink is added to the water, the colored water is conducted through the stem of the plant to the leaves. On getting to the leaves, the water molecules evaporate leaving behind the colored patches fond on the leaves. When the stem of the plant is cut, the blue color is seen along its length showing that the colored water was conducted through it.

The answers are 2 and 4 because consumers kill to eat which balances the number of producers and they eat other organisms

Answer:

Up and down

Explanation:

In the process of diffusion, a substance tends to move from an area of high concentration to an area of low concentration until its concentration becomes equal throughout a space.

Answer:

Molecules will move from an area of high concentration to an area with lower concentration.

Answer:

1: LAW

2: THEORY

3: THEORY

4: THEORY

Explanation:

Answer:

Homologous chromosomes are NOT identical.

Explanation:

They contain slight differences in their genetic information, allowing each gamete to have a unique genetic makeup. Consider that the homologous chromosomes of a sexually reproducing organism are originally inherited as two separate sets, one from each parent.   Hope this helps :)

Answer:

The animals  the different kinds of weather in that biome. Where it is located.

Explanation:

Answer:

C. 17.0%

Explanation:

A random sampling of human populations is done to check the frequency of a particular infection. The proportion of the individuals in the total population that suffered the infection at any time during the year are counted. The proportion of the individuals infected any time during the year is divided by the total number of the individuals surveyed and the percentage is taken to calculate the prevalence of the infection in the sampled population.

Here, the total number of the individuals that were infected with flu in the last year= 4250.

The total number of the checked individuals= 25,000.

So, the proportion of the individuals infected with flu in this population= 4250/25000 x 100= 17%

Answer: It is C. 17.0%

Explanation:

Answer:

can you make my friend............

Answer:

vacuole

Explanation:

the nucleus is the control center

the mitochondria is the power house

ribosomes deal with proteins

hope it helps:)

Answer:

dddďdddddddddddddddddddddd

Answeer: cell state

Explanation:

Answer:

Carbon Dioxide

Explanation:

Answer:

D

Explanation:

all of those contribute to air pollution

Answer: D

Explanation:

Answer:

The existence of variations in population.

Answer:

The answer is a

Explanation:

X-linked disorders result from mutated genes on the X chromosome. Males, who have only one X chromosome (i.e., they are hemizygous), will fully express an X-linked disorder. On the other hand, females, who have two X chromosomes, will be carriers of the defect in the majority of cases, and so they are usually asymptomatic.

Answer:

Within a protein, multiple amino acids are linked together by peptide bonds, thereby forming a long chain. Peptide bonds are formed by a biochemical reaction that extracts a water molecule as it joins the amino group of one amino acid to the carboxyl group of a neighboring amino acid.

Explanation:

Answer:

Eumelanin is black or brown pigment and pheomelanin is red or yellow pigment

Answer:

Explanation:

The observable traits expressed by an organism are referred to as its phenotype. An organism's underlying genetic makeup, consisting of both physically visible and non-expressed alleles, is called its genotype.