BIOLOGY HIGH SCHOOL

Why are sepals and petals referred to as "accessory parts" (of the plant)?

Answers

Answer 1
Answer: The calyx and corolla together compose the perianth. The sepals and petals are accessory parts or sterile appendages; though they protect the flower buds and attract pollinators, they aren't directly involved with sexual reproduction.


 This should be the correct way to explain it 2 you HOPE THAT I HAVE HELPED .
Answer 2
Answer: They are not really needed to be able to reproduce offspring. 

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What is the organelle that manages or controls all the cell functions in a eukaryotic cell

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The nucleus is the organelle that manages or controls all the cell functions in a eukaryotic cell.

Answer: Nucleus

What happens when introducing a gene into a new organism

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is any organism whose geneticmaterial has been altered using genetic engineering techniques (i.e. geneticallyengineered organism). GMOs are the source of medicines and genetically modified foods and are also widely used in scientific research and to produce other goods.The term GMO is very close to the technical legal term, 'living modified organism', defined in the Cartagena Protocol on Biosafety, which regulates international trade in living GMOs (specifically, "any living organism that possesses a novel combination of genetic material obtained through the use of modern biotechnology").

Which of the following is an example of recycling a renewable resource? A. riding a bike instead of driving a car B. turning food scraps into compost for plants C. turning off lights when you are not using them D. washing plastic forks and using them again instead of throwing them away

Answers

Answer: C. Turning food scraps into compost for plants.

Explanation:

A renewable resource is the one which can be resued once used. On earth the renewable resources are abundantly available like sunlight, water, and air. Recycling of renewable resource can be define as the reuse of resource or conversion of resource into another form so that it can be used again.

A food trash can be coverted into a compost which can be a valuable recycling product useful for the growth of the plants.

All organisms contain DNA, and every organism's DNA is made of the same four nucleotides. The differences between organisms is simply based on the order of these nucleotides. Since all organisms have the same basic, universal structure for DNA, which of these must also be universal? A) All organisms have the same proteins. B) All living things must have the same amount of DNA. C) All organisms must be genetically identical to each other. D) All codons in all organisms' DNA code for the same amino acids.

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Answer;

All codons in all organisms' DNA code for the same amino acids.


Explanation;

The genetic code is universal such that almost all organisms translate nucleotide sequences of DNA and RNA to amino acids sequences of proteins.

A good example is between Humans and bacteria; A codon with three Thyamine (DNA) ; TTT ,codes for amino acid Phenylalanine.

All codon in all organisms' DNA code for the same amino acids

Nami conducts an investigation on plants. She places a grow light on a timer to give the plants different amounts of light to see if this would affect their growth. In this investigation, the amount of light is the

Answers

Answer;

-Independent variable

Explanation;

-An independent variable is defines as the variable that is changed or controlled in a scientific experiment. An independent is changed or controlled in a scientific experiment to test the effects on the dependent variable. A dependent variable on the other hand, is the variable being tested and measured in a scientific experiment.

-A change in the independent variable directly causes a change in the dependent variable.The independent and dependent variables may be viewed in terms of cause and effect.
Nami conducts an investigation on plants. She places a grow light on a timer to give the plants different amounts of light to see if this would affect their growth. In this investigation, the amount of light is the independent variable. The reason being that its the cause of change in growth in the experiment.

I hope it helps, Regards.

As the human population grows, what happens to our natural-resource requirements?a. They increase.
b. They decrease.
c. They do not change.
d. They go in cycles.

Answers

As the human population grows, our natural resource requirementsincreases. The answer is letter A. One, the source of food is important for survival.More humans needed the right nutrition to improve bodily functions. And therefore,more lands are to be cultivated for agricultural production to suffice the needsof the society.  Two, humans need extra habitablearea to live.  It does not go in cycles becausethe ecosystem is not balanced. Population explosion is the main cause why thesenatural resources slowly decreases and at the same time increases their demand.

the answer is A. THEY INCREASE
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