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3 years ago

In two or more complete sentences explain the similarities and differences between terrestrial and solar radiation.

2 answers:

8 0

Terrestrial radiation is energry that is emmited from the earth from the parts of solar radiation. Solar radiation is radiation and energy off the sun, however, only some of the radiation reches the eath's surface. I beleive the similarity is that both of the radiations originated from the sun.

padilas [110]3 years ago

7 0

The Difference between Solar and Terrestrial Radiation. Radiation can be defined as a process whereby energy or heat is transferred by some sort of wave motion. Incoming solar radiation, or isolation, arrives at the earth as magnetic energy waves and high speed particles .if this doesn't help i tried my best

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Is it ethical to make changes to human DNA? What are the dangers of this?

vazorg [7]

Answer: It may be unethical to some people due to their beliefs. But as science evolves,genetic engineering has made it possible for us to modify many things,including human DNA. To me,changing human DNA is ethical. Changes in DNA bring many positive consequences,for example lower the risk of many deadly diseases(cancer/cystic fibrosis,etc). We can modify our features and create "a perfect human". But,there are some dangers that come with this power. For example,DNA modification could go wrong and create dangerous species

Explanation:

6 0

3 years ago

Qualitative data relies on numbers like 25 centimeters or 2.3 grams

anzhelika [568]

Answer:

False

Explanation:

False, Qualitative data describes the object, yellow, wet, ect. quantitative data relies on numbers.

6 0

3 years ago

A trainer has an explosive sport athlete client and has them perform explosive movements. Which of the following principles does

Veronika [31]

Answer:

Option C

Explanation:

Specific adaptations to imposed demands.

This SAID principle asserts that our bodies will respond specifically to demands that are placed on it. It can occur notwithstanding age or sex.

In this case study, the trainer is imposing the demand to become more explosive, then the client has to continually train explosively.

3 0

3 years ago

9. Briefly describe the difference between independent and dependent variables.

lakkis [162]

Explanation:

he main difference between Independent Variables and Dependent Variables is in the definition. Independent variables in research can be manipulated or altered to see their impact on other variables. The dependent variable is dependent on other variables. It is the variable that is measured or tested by a researcher.

6 0

2 years ago

True or false. Mitosis takes place during M phase of the cell cycle, which is longer than interphase. View Available Hint(s) Tru

notsponge [240]

Answer:

The questions in this write up are three (3).

1. False

2. 24 DNA molecules

3. A check that chromosome replication has been successfully completed

Explanation:

QUESTION 1:

The cell cycle generally consists of two distinct phases viz: the Interphase and the Mitotic (M) phase. The Interphase is the phase where the cell undergoes rest and prepares for mitosis in the M phase. The Interphase comprises of the G1, S and G2 stages. As rightly said in the question, Mitosis, which is the division of the nuclear material, occurs in the M phase of the cell cycle but it occurs in a shorter time than the interphase.

The cell spends most of its time preparing for division in the Interphase i.e. enlarging, synthesing new DNA molecule etc.

QUESTION 2:

Each unreplicated chromosome contains one genetic material (DNA). The DNA content becomes doubled when the cell of an organism undergoes DNA replication in the S-phase of the cell cycle i.e. it becomes a replicated chromosome or sister chromatids.

According to the question, the animal species contains 6 pairs of chromosomes, meaning it will contain 12 unreplicated chromosomes with 12 DNA molecules prior to DNA replication. DNA replication has already occured in the G2 phase, hence, the cell will contain 12 sister chromatids will each chromatid containing 1 DNA molecule each. Therefore, 12 pair of sister chromatids or replicated chromosomes will contain 24 DNA molecules.

QUESTION 3:

During the cell cycle, certain internal control activities occur to ensure that each step of the cycle is going as planned. These mechanisms are called CHECKPOINTS. Each stage of the cell cycle is characterized by distinct checkpoints.

The checkpoints that occur after the G1 stage of interphase does not include checking the successful completion of DNA replication as placed in the question. DNA replication occurs in the S-phase of the cell cycle, which is the phase after G1, hence, at the G1 level, the cell is not expecting replication to have occured. The complete chromosome replication is checked at the G2 checkpoint.

4 0

3 years ago