which is produced when an egg and a sperm unite during a plants life cycle ? A.spore B.meiosis C.zygote D.gametophyte

Answers

Answer 1

Answer: The answer is C) zygote

Answer 2

Answer: The answer is C)zygote.

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What is selective permeability?

Answers

Selective permeability, made possible in cells by the phospholipid bilayer that makes up the plasma membrane, is basically monitoring and regulating what can and can't enter the cell. It is carried out by a series of membrane proteins that act as channels to polar molecules, opening to allow them in and closing to prevent their entry. This is possible because the hydrophobic tails of the phospholipid molecules repel polar molecules and so prevent their entry unless through a channel.

The U.S.-Mexico border 2012 program’s goal is to _______. a. prevent illegal immigration
b. improve transboundary ecosystem health
c. promote joint economic development
d. reintroduce endangered species

Answers

The correct answer is (b) improve transboundary ecosystem health.

The main goal of this mission was to improve the transboundary ecosystem by improving the health in the U.S border and to make it consistent by the help of sustainable development. It includes a variety of area that has to maintained. The air, water and land contamination has to be removed to improve the overall environmental health.

The US - Mexico Border 2012 Program's goal is to improve the transboundary ecosystem health. The purpose of such program is really focused on revitalizing the ecosystem, specifically the environment. Its goal is to reduce the contamination in the air, land and especially water.

describe the results if you do an experiment to determine the physical properties of tyrosinase. if you run gel filtration and SDS-PAGE, what results do you see

Answers

Gel filtration and SDS-PAGE could be used for determining a molecular weight of proteins, such as tyrosinase. In both methods, molecules are separated based on their size. Gel filtration measures the molecular weight of native proteins and SDS-PAGE measures the molecular weight of denaturated proteins.

_____ allow materials to be exchanged between the blood and tissues, _____ carry blood towards the heart, and _____ carry blood away from the heart.

Answers

Capillaries; veins; arteries

Capillaries allow materials to be exchanged between the blood and tissues, veins carry blood towards the heart, and arteries carry blood away from the heart.

Capillaries are small blood vessels through which molecules such as oxygen and glucose enter the cells.

Veins are tubes or blood vessels that transport blood toward the heart. Veins mostly transport deoxygenated blood towards the heart except the pulmonary and umbilical veins, which transports oxygenated blood toward heart.

Arteries are blood vessels that transport blood away from the heart to other parts of the body. Arteries have elastic walls and they are stronger and thicker than veins.

Of the five characteristics of living things, which one is required for the species to survive but does not have to apply to an individual

Answers

Answer:

reproduction

Explanation:

Answer:

Reproduction

Explanation:

100% on test

news article discussed a genetically engineered medicine that is used to enhance the production of antibodies that are usedagainst disease which medicine can this article be about?

Answers

Answer:

B. Flushot

Explanation:

I'm pretty sure this is the answer

i think its talking about nanobots, they are injected into your body with a syringe and improve your body and senses to almost superhuman levels.

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identify solar wind nuclear and tidal power as nonrenewable or renewable energy resources. Explain your answer.

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Radium has a half-life of 1,620 years. In how many years will a 1 kg sample of radium decay and reduce to 0.125 kg of radium?1,620 years 3,240 years 4,860 years 6,480 years

Overpopulation impacts the environment primarily bylimiting land available for crops.destroying natural resources.causing the removal of trees.interfering with normal plant growth.