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3 years ago

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In terms of alternation of generations, the internal parts of the pollen grains of seed-producing plants are most similar to a _

____.A) moss sporophyteB) moss gametophyte bearing both male and female gametangiaC) fern sporophyteD) fern gametophyte bearing only antheridia

1 answer:

Ket [755]3 years ago

8 0

The correct answer is D) fern gametophyte bearing only antheridia.

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What type of variation is necessary for natural selection to occur

Lina20 [59]

Answer: genetic variation

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3 years ago

What are two diffrences between replication and transcription?

Ghella [55]

Replication - The action of copying or reproducing something.
DNA replication of producing two identical replicas of DNA from one original DNA molecule.

Transcription - First step to gene expression, in which a particular segment of DNA is copied into RNA (especially mRNA) by the enzyme RNA polymerase. Both DNA and RNA are nucleic acids, which use base pairs of nucleotides as a complementary language.

1.) Transcription involved both DNA and RNA, whilst replication only involves DNA.
2.) Replication uses two identical replicas of DNA, whilst transcription is copied.

Hope I helped.

5 0

3 years ago

The field of psychology is a collection of diverse subfields. Psychologists who conduct ____________ research contribute by expa

serious [3.7K]

Answer:

d. basic; applied

Explanation:

The basic research is a type of research that mainly aims to increase the existing base of the scientific knowledge and hence, in the case of psychology the basic research would increase the knowledge about psychology.
Therefore, the purpose of basic research is to add up to the knowledge that already exists.
The research that is conducted to especially solve certain problems or answer specific questions is called applied research. Its main aim is to find out the solution for a given problem.
Therefore, in the case of psychology applied research is conducted to explore practical problems.

8 0

3 years ago

A population that is decreasing in size will have an age-structure histogram shaped like a(n): 1) inverted pyramid, with a narro

lawyer [7]

The correct answer is - 1) inverted pyramid, with a narrow base representing a small number of young individuals.

The populations that are decreasing are usually population in countries that are highly developed. The conditions for living are excellent, the medical care on high level, life expectancy very high, but the birth rates very low.

In this type of conditions, there's smaller and smaller number of young individuals, with the middle aged population being much bigger, and the older population being constantly on the rise. This will give the age-structure histogram a reverse shape than what it is supposed to have, it will be similar in appearance like a inverted pyramid, meaning that the population is aging and that it will be constantly on a decline in the future.

4 0

3 years ago

5 Why is it easier to digest sour milk than fresh milk?

Katyanochek1 [597]

Sour milk contains less lactose than the fresh milk, as the sour milk gets converted to lactic acid and bacteria which enhances the digestion process. One important reason is that proteins take more time in getting digest than other nutrients. We know that fresh milk has a large amount of lactose.

Explanation:

The lactic acid bacteria have many benefits. They improve lactose digestion in the stomach. The lactase activity of the bacteria performs the task of digesting lactose in the product once it reaches the intestine thus fuelling the process of digestion in case of sour milk.

In fresh milk, the casein protein in contact with milk forms curdles which are difficult to digest.

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3 years ago