BIOLOGY HIGH SCHOOL

Which is an example of renewable energy source? waterfall
burning wood
hot stove
gas pump

Answers

Answer 1
Answer:

A water fall can be used as a source of renewable energy.

What is a renewable energy?

It is obtained from sources that can be replenished. They can not be depleted with use.

What are the examples?

Renewable energy includes solar energy, geothermal energy, wind energy, etc.

How can a waterfall be a source of energy?

It can be used to generate hydroelectricity.

To learn more about renewable energy and hydroelectricity here,

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Answer 2
Answer:

Answer:

solar energy, wind energy, hydropower, geothermal energy, and biomass energy. These types of energy sources are different from fossil fuels, such as coal, oil, and natural gas.

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During meiosis, genetic recombination may occur more than once through the process of ____________________, resulting in an increase in genetic variability.

Answers

Answer:

Crossing-over

Explanation:

Crossing-over is a phenomenon that occurs in the Prophase stage of meiosis I. Two chromosomes of a homologous pair comes together in a process called SYNAPSIS to form a TETRAD structure. While the chromosomes synapses, breaks occur at corresponding points in the non-sister chromatids i.e in one chromatid of each chromosome. Since the chromosomes are homologous, breaks at specific points mean that the segments that are broken off contain specific genes i.e. alleles. The broken sections are then exchanged between the chromosomes to form complete new units, and each new recombined chromosome of the pair can go to a different daughter sex cell.

In meiosis, the maternal and paternal chromosomes can be shuffled into daughter cells in many different combinations. The resulting chromosomes are not entirely maternal, neither are they entirely paternal. This ensures genetic variation in sexually reproducing organisms.
crossing over (aka recombination)

Which is a disadvantage of the genetically engineered potatoes

Answers

Answer:

The question lacks options, the options are:

A) They are easier to transport and store than injectable vaccines (shots).

B) They make it easier to administer edible vaccines.

C) They are more expensive than potatoes without the vaccine.

D) They have nutritional value while potatoes without the vaccine do not.

Thw answer is C

Explanation:

Agricultural crops have faced series of problems caused by pest, nutrient composition etc. However, technology has made sure they these problems are reduced in the least possible way via the use of genetic engineering. Genetic engineering, also called genetic modification is the manipulation of an organism's genes using biotechnology procedures.

In this case, the potato crop was genetically modified, meaning that, the crop was improved genetically. Although, this process has many advantages like inserting a vaccine in the edible crop and easy storage, it also has disadvantages. One of these disadvantages as mentioned in the options is that they become more expensive than potatoes without the vaccine. The price increases due to the vaccines they now contain in comparison to the potatoes without vaccine (not genetically modified).

This price can become not affordable for an average person. Hence, it is a disadvantage of the genetically modified potato crop
Disadvantage:
1. Cause health problems for animals eating the product.
2. Some GM foods may contain allergens and toxins.
3. Gene transfer may occur between organisms.

Which of the following is true of modern cell theory?

Answers

The answer is:

As technology improves so will our understanding of cells.

:)
Which of the following is true of modern cell theory? C IS THE ANSWER

I need help can someone help me ?

Answers

Answer:

A) The main functions of mitosis are growth and repair. Some cells once fully formed do not undergo cell division, such as nerve cells and muscle cells. Since you can never re-grow or repair these types of cells once they are mature, you must take care of the ones you have.

If a woman is heterozygous for type a and her husband is heterozygous for type b what is the probability of blood types that their offspring would have

Answers

for this you would use a punnet square (ill try my best to show it while typing)
heterozygous means different, so (with blood type) with heterozygous A you will see AO (this will be blood type A)


     A     O
B  AB  BO
O AO  OO

you then have the types in the squares:
AB (type AB blood)
BO (type B blood)
AO (type A blood)
OO (type O blood)

Answer:

i think 25

Explanation:

Explain how insulin contributes to homeostasis in humans. Use the following terms in your response: Hormone, glucose, pancreas,homeostasis,and feedback mechanism.

Answers

Answer:

Insulin lowers blood glucose by increasing glucose uptake in muscle and adipose tissue and by promoting glycolysis and glycogenesis in liver and muscle.

Explanation:
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