Answer:
Biological catalysts in the living organism .
Explanation:
In living organism, enzymes speed up the rate of chemical reaction by lowering the activation energy thereby bringing the reactants close to each other and weakened their chemical bonds which will enable the reactions to be faster.
What is the most important function of sweating
A.To remove excess Heat from the body
B. To remove excess Salts from the body
c. To remove excess urea from the body
d. To remove excess water from the body
Sickle cell anemia is a mutation that results in abnormally shaped blood cells. Which two of the following molecules are changed as a result of this mutation?
lipids
mRNA
Sugars
Pigments
Protein
Sickle cell anemia is caused by a single letter mutation so transcription will lead to synthesis of a different mRNA molecule . The different mRNA molecule will lead to a different protein where a single amio acid is different(there is valine instead of glutamic acid)
Carbon exists in the atmosphere as a(n):
a.Free atom
b.Chemical
c.Liquid
d.Gas(CO2)
Answer:
gas
Explanation:
Answer:
its D gas
Explanation:
carbon dioxide is a greenhouse gas that works to trap heat close to earth
Which substance is a solid?
Answer:
walls
Explanation:
Answer:
Rocks? Im not sure what you mean.
A student conducts an experiment to determine how the amount of water given to a plant affects its growth. Which of the following is not a constant or control for this experiment?
a. the type of plant
b. the amount of soil
c. the amount of water
d. the amount of time in the sun
Please select the best answer from the choices provided A B C D
Answer:
Its C
Explanation:
How would someone with diabetes know they need medical help?
You may be diagnosed with diabetes because you go to the doctor for: persistent infections or a slow-healing wound. complications that are associated with prolonged high blood sugar levels, such as numbness or tingling in your feet. heart problems.
Mitosis Notes
Biology
Interphase
• DNA is _________________ (# of chromosomes doubles)
• DNA appears as ______________________ (chromatin) at the start, but change to __________________________ at the end of this phase.
Prophase
• __________________________ (cell begins to divide)
• ___________________ appear and begin to move to __________________ ________________________ of cell (only in animal cells)
• ____________________________ form between the poles (made of microtubules)
• ____________________________ starts to disappear
Metaphase
• ________________________ attach to the spindle fibers at the ________________ of the cell.
Anaphase
• ______________________________ when the ____________________________ and begin to move to opposite ends of the cell (spindle fiber ___________________).
Telophase
• ______________________________________
• Chromosomes appear as ________________________
• Spindle fibers _______________________ and disappear
Cytokinesis
• Cell membrane moves inward to create __________________________ - each with its own nucleus with __________________________
Control of the Cell Cycle
• Controlled by enzymes called _________________ and _____________________________ _______________________
1. ________________________________ (G1): decide whether the cell will divide
2. ________________________________ (G2): checks DNA replication
3. ________________________________ (M): triggers exit from mitosis
Cancer
• ___________________ division of cells
• Cancer cells ______________________________ to the body’s control mechanisms.
Apoptosis
• Programmed ______________________________
• Cells that are no longer _____________________
• _________________ fingers and toes
• __________________ cells
• _________________ leaves
Stem Cells
• _______________________ cells that can be programmed to develop into ________________________ cells
• ______________________ - 100-150 stem cells
• Adult stem cells – also called __________________ stem cells
Answer:
the firat one is 24 i think....
What would be the most likely outcome if the lysosomes of a human cell stopped functioning?
Protein synthesis would stop.
Protein transfer would stop.
Ribosomal RNA synthesis would stop.
Waste would build up in the cell.
Waste would start to build up in the cell since lysosomes have the role of intracellular digestion of waste materials.
A known disease that is caused by a lysosomal malfunction is Hunter's disease
6. Ross was riding his bike down a hill, and he ran straight into a mailbox. Identify
The statement that most closely describes Ross' motion immediately following
his collision with the mailbox.
A. He is thrown forward over the handlebars.
B. He is thrown backward off the bike.
C. He is thrown sideways off the bike.
D. He is thrown upward into the air.
Answer:
A. He is thrown forward over the handlebars.
Explanation:
lol inertia
Answer:
a
Explanation:
he is thrown forward over the handlebars
What are each organelles labels on this diagram?
A scientist is observing a gymnosperm. It is a desert shrub with needle-like leaves. The shrub has a deep root system and produces cones. Which gymnosperm is the scientist most likely observing?
A. She is observing a gnetophyte because, unlike other gymnosperms, gnetophytes can grow as shrubs in deserts.
B. She is observing a gnetophyte because, unlike other gymnosperms, gnetophytes can have needle-like leaves and deep root systems.
C. She is observing a ginkgo because, unlike other gymnosperms, ginkgoes can grow as shrubs in deserts.
D. She is observing a ginkgo because, unlike other gymnosperms, ginkgoes can have needle-like leaves and deep root systems.
Answer:The answer is B
Explanation:I took the test
The scientist is observing a gnetophyte because unlike other gymnosperms, gnetophyte can have needle-like leaves and deep root systems.
What are gymnosperm?'Gymnos' means 'n aked' and 's perm' means 'seed'.It reproduces by means of an exposed seed or ovule.They do not produce fruits and flowers.What are gnetophyte?They belongs to gymnosperm.Their leaves become needle-like to reduce transpiration.They are vascular plants.The reproductive structure are contained within cones.Hence, the correct option is B. She is observing a gnetophyte because, unlike other gymnosperms, gnetophytes can have needle-like leaves and deep root systems.
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Types of orchids grow high on the branches of the tall kapok trees of the jungle. This adaptation allows the orchid to receive enough sunlight to perform its photosynthesis but the kapok trees are unaffected.
commensalism
parasitism
mutualism
Answer:
A. commensalism
Explanation:
the tree isnt helped or harmed
When the genetic material found within an offspring is diverse, what type of reproduction is responsible?
a
Sexual reproduction, because the genetic material comes from both parents
b
Sexual reproduction, because the genetic material comes from one parent
c
Asexual reproduction, because the genetic material comes from both parents
d
Asexual reproduction, because the genetic material comes from one parent
Answer:
sexual reproduction, because the genetic material comes from both parents.
Explanation:
The sperm and egg produced contain different combination of genes
What causes a rainbow?
Answer:
A rainbow is caused by sunlight and atmospheric conditions. light enters a water droplet, slowing down and bending as it goes from air to denser water. The light reflects off the inside of the droplet, seperating into its component wavelengths-or colors when light exits the droplet, it makes a rainbow
Why are mountain ranges and polar ice caps not easily classified into a major biome?
Answer:
Because they are not easily defined in terms of a typical community of plants and animals, mountain ranges and polar ice caps are not usually classified into biomes.
Explanation:
15. A person with an infection begins to feel hot and feverish. This response MOST likely helps the body fight infection by -
Answer:
Elevated body temperature helps certain types of immune cells to work better.
Explanation:
i need help with this can someone help me?
Explanation:
Predation plays an important role in the overall health of an ecosystem since it regulates the population of preys as well as maintain the population of higher-level consumers. If predators were eliminated from an ecosystem, it would cause an increase of the population of preys and potentially decrease the population of other organisms on lower trophic levels. An example of such effect can be seen from the population of rabbits and plants supposing that foxes, eagles and snakes are eliminated from the ecosystem. The rabbit population will multiply, causing a decrease in the population of plants such as grass that rabbits feed on.
Hope this helps :)
how do depressants affect the central nervous system
Answer:
Depressant substances reduce arousal and stimulation. They do not necessarily make a person feel depressed. They affect the central nervous system, slowing down the messages between the brain and the body. They can affect concentration and coordination.
Explanation:
What is the relationship between mutation, natural selection, and adaptation?
Explanation:
well a mutation in my opinion is genetic change that happened in the animal this could be beneficial or may not be. natural selection is a process that ensures only the best of the species survives and more of them will produce because all of the flawed ones will die off. adaptaion is when a plant or animal adapts to its surrounding over time they may develop a charterisric that will help them thrive. all of them tie togethor
If a root cap was damaged, how might this negatively affect the plant? Explain your reasoning.
8. Which of the following organ systems function like a cell membrane in animal cells
a. Immune system
b. Respiratory system
c. Circulatory system
d. Reproductive system
Answer:
The answer is A.
Answer:
THE ANWSER IS A .ARK ME BRANLEST PLZ
Which change would be considered a short-term environmental change? Check all that apply. an ice age an El Niño storm a small asteroid impact a tsunami mountain building
Answer:
i think b, c, and d
Explanation:
An ice age an El Niño storm is considerd to be short term enviornmental change.
What is short term change?Short-term thinking and long-term implications conflict when it comes to climate change, which affects both corporations and governments. Assessing the risks and taking action before failure has permanent economic and environmental repercussions are necessary in order to meet the challenge of climate change.
Short-term thinking and long-term implications conflict when it comes to climate change, which affects both corporations and governments. Assessing the risks and taking action before the failure-related economic and environmental consequences become irreversible are both necessary in order to meet the challenge of climate change.
Therefore, An ice age an El Niño storm is considerd to be short term enviornmental change.
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Mistletoe is a green plant that can make its own food, but also derives food from the mesquite tree on which it lives. In this way mistletoe is able to steal water and valuable minerals from the tree. 1. What is the advantage and disadvantage of this relationship to each organism? 2. What would happen to the mistletoe population if mesquite trees increase in number? 3. What type of symbiosis is this?
Answer:
1. Mistletoe is parasitic to the mesquite tree, it steals from the tree without giving anything valuable back to it. In this case, only the mistletoe gains an advantage.
2. If the mistletoe population on the tree were to increase, the mistletoe would probably end up slowly killing the tree. I say this because its a parasite to the tree. Its constantly stealing water and valuable minerals that it needs and doesnt give back anything that could help the tree. With all the water and minerals being stolen and an uneven rate with no way for the tree to replenish it all quickly enough it'll die.
3. Its parasitic since the mistletoe just takes and takes harmfully
Mistletoe plant is a parasite on the mesquite tree as it takes all the valuable minerals and water from the plant and does not give anything valuable in return to the mesquite tree.
What is Mistletoe plant?
Mistletoe plant is a parasite on the mesquite tree, it steals water from the tree without giving anything valuable back to it. In this case, only the mistletoe gains an advantage.
If the mistletoe population were to increase on the tree, the mistletoe plant would probably end up killing the mesquite tree. This is because it is a parasite to the tree. It is constantly stealing water and valuable minerals from the tree which it needs and doesn't give back anything valuable that could help the tree.
It is a parasite plant since the mistletoe plant just takes all the valuable minerals and water from the tree and thus is harmful.
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Which three gases are released into the atmosphere when volcanoes erupt?
radon, water vapor, carbon monoxide
radon, helium, nitrogen
nitrogen, water vapor, carbon dioxide
carbon dioxide, carbon monoxide, radon
Answer:
The answer is C.) nitrogen, water vapor, carbon dioxide
Explanation:
i got it right on the unit test
The three gases released into the Atmosphere when volcanoes erupt are nitrogen, water vapor, carbon dioxide.
What is volcanic eruption?Volcanic eruption refer to the process that lead to the released of lava or gases from volcanoes when the Earth crust or planetary bodies or Mass object ruptures which allow the movement of magma out of them.
Therefore, The three gases released into the Atmosphere when volcanoes erupt are nitrogen, water vapor, carbon dioxide.
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I'M SORRY IF YOU KEEP SEEING ME BUT MY CLASSES END TOMORROW AND I NEED TO GET EVERYTHING DONE TONIGHTTTTT T^T
Answer:
I believe its b im not sure tho
All of the following affect the direction of wind motion EXCEPT
A) gravity
B) rotation of the Earth
C) friction with the ground
D) location of high and low pressure areas
Answer:
its gravity i believe
PLEASE HELP!! Easy 10 points!!
Answer: I am pretty sure is A!
Will mark Brainliest!
The sequence of bases on one DNA strand (one side of the DNA ladder) is AGCTCAG. What is the sequence of the bases on the opposite strand?
Which of these is the direct result of an error in the transcription of a DNA nucleotide
Amino acids do not bond to tRNA.
The nuclear membrane is ruptured.
A codon sequence is incorrect.
Transportation of mRNA does not occur.
The direct result of an error in the transcription of a DNA nucleotide is that a codon sequence will be incorrect. So the correct option is C.
What is transcription?The first step in the expression of a genetic code is called transcription. During gene expression, the information stored in the DNA is expressed in the form of proteins.
In transcription, DNA is utilized to produce RNA. The RNA molecule is the copy of the DNA's genetic sequence. The RNA copy produced by the process of transcription is called an RNA transcript.
This transcript has the required information for the construction of a polypeptide chain. But before the formation of proteins, a eukaryotic RNA transcript requires processing to be converted into mRNA.
The mRNA thus produced has codons for the formation of proteins. Each amino acid is a result of the translation of three codons.
Therefore, if there is an error in the transcription of DNA nucleotides, the codon sequence will be incorrect. The correct option is C.
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Which of the following best describes a DNA molecule
Double helix
Made of amino acids
Contains ribose
Constrain uracil
Answer:
Double Helix because thats how DNA looks like
Explanation:
