BIOLOGY HIGH SCHOOL

You calculate that 319 000 000 m is the answer to a problem. You are asked to write your answer in scientific notation. Which answer is correct?

Answers

Answer 1
Answer: The scientific notation for 319,000,000 will be 3.19 x 10^8. It is just one of the possible answers, it could be presented in many form. We could express that also as 31.9 x 10^7 or 319 x 10^6. This is just a simple counting of how many numbers are before the period. 
Answer 2
Answer: 3.19 raised to the 9th

Related Questions

Why do skin oil cells have more smooth endoplasmic reticulum? A) To store excess water B) To synthesize lipids C) To produce ATP D) To aid in cell division
In order to yield a haploiddiploid chromosome condition, only one sperm can fertilize one egg.
A person who has a weakened immune system may not be able to fight against infection because
in a particular flowering plant species, orange flower color trait has simple dominance over the yellow flower color trait. in a population that is in hardy-weinberg equilibrium for that trait, sixteen percent of a population show yellow-flower phenotypes. what percent of the population is heterozygous for the flower color alleles?
What is the difference between facilitated diffusion and active transport?Facilitated diffusion uses ATP and moves substances with the concentration gradient; active transport does not.Active transport uses ATP and moves substances against the concentration gradient; facilitated diffusion does not.Active transport uses ATP and does not require a carrier protein; facilitated diffusion does neither.Facilitated diffusion uses ATP and requires a carrier protein; active transport does not.

Which life cycle describes a plant that reproduces asexually and sexually?

Answers

egg + sperm → embryo → adult with all its chromosomes → gametes → adult; gametes produce an organism with all its chromosomes

Much like a cell , a virus is able to

Answers

Similarly to cells, viruses can spread and grow, as well as mutate. They can change what they do becoming even more deadly or they can become immune to medicine. They can also spread from cell to cell, then from people to people, change the way they spread as they mutate, and many many other things that are usually bad for humans.

1)While the Lophophorata (this groups includes worms and mollusks) are a well-recognized group, phylogenetic (family tree) studies do not yet agree on the identity of their closest relatives.True
False
2)The marine flatworms (polycladids) are the smallest of the free-living flatworms, sometimes reaching lengths of 15 centimeters.
True
False
3)Bilateria is a classification within Animalia, and are characterized by animals which are bilaterally symmetrical (with a left and a right side to their bodies).
True
False

Answers

The right answer for the question that is being asked and shown above is that: "TRUE; TRUE; TRUE" (1) While the Lophophorata (this groups includes worms and mollusks) are a well-recognized group, phylogenetic (family tree) studies do not yet agree on the identity of their closest relatives. (2)The marine flatworms (polycladids) are the smallest of the free-living flatworms, sometimes reaching lengths of 15 centimeters. (3)Bilateria is a classification within Animalia, and are characterized by animals which are bilaterally symmetrical (with a left and a right side to their bodies).

What are the main functions of meiosis

Answers

The main function of meiosis is to produce gametes (e.g. egg/sperm cells). These are cells with half the number of chromosomes that are in a normal body cells. It is also to produce variation because during meiosis genes are switched round in homologous chromosomes (this is called crossing over) and the homologous chromosomes are independently assorted, which means different random mixtures of chromosomes end up in the gamete cells produced each time meiosis happens.

Final answer:

Meiosis is a biological process in eukaryotes that reduces the number of chromosomes in a cell by half and introduces genetic variation. It produces four genetically unique haploid cells from each diploid parent cell, which are essential for sexual reproduction.

Explanation:

The main functions of meiosis are to reduce the number of chromosomes in the parent cell by half and to produce four genetically unique haploid cells from each diploid parent cell. In eukaryotes, this process is necessary for sexual reproduction. Meiosis begins with the duplication of each chromosome during the interphase. This is followed by two rounds of nuclear division where homologous chromosomes and then sister chromatids are separated into different nuclei. This process introduces genetic variation through crossover in prophase I and random alignment of chromosomes at metaphase I.

Diploid cells are those that contain two sets of chromosomes (one set from each parent). In contrast, haploid cells produced by meiosis contain only a single set of chromosomes. After meiosis, these haploid cells (sperm and eggs in animals) can fuse during fertilization to produce a diploid offspring with two sets of chromosomes. The genetic variation introduced during meiosis and fertilization is critical for the survival and evolution of species.

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A scientist attends an annual conference hosted by the American Cancer Society. At which type of event is she most likely to see informal presentations of many different attempts to treat and prevent skin cancer?A. Lecture
B. Panel discussion
C. Poster session
D. Keynote address

Answers

Answer:

The correct answer would be B. poster session.

A poster presentation is an event of a conference in which research information is presented in the form of paper posters to be viewed by participants of the conference.

In a single event, numerous posters are presented through which various researchers illustrate their research methodology along with their results.

Thus, informal presentations of many different attempts to treat and prevent skin cancer are most likely to be observed in a poster session of the conference.

Answer:

B. Poster Session

Explanation:

Apex

During the growth stage, plants ____.A) germinate, and begin cell differentiation
B) begin making their own food via photosynthesis
C) develop the ability to reproduce
D) start to sicken and perish

Answers

During the growth stage, plants begin making their own food via photosynthesis.

What is germination?

It is the process by which a seed sprout and forms a seedling.

What is growth phase?

  • Until seedling is formed the embryo derives nutrition from the food stored in the seed.
  • After that the plant begin photosynthesis which produces raw materials for their vegetative growth.

What happens vegetative growth is complete?

  • After vegetative growth is complete plants enter into reproductive phase.
  • Depending on the life span after flowering plants either die or start preparing for the next season.

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It's germinate or answer b
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