Biologyyyy agaaainn!

Biologyyyy Agaaainn!

Answers

Answer 1

Answer:

1 and 2

Explanation:

This is my answer to your question


Related Questions

Summarize the process of sexual reproduction and explain how variations of inherited traits can increase or decrease an organism’s chance of survival

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Answer:

Explanation:

A Human cell has 46 chromosomes. (I’ll use humans to keep things simple). In sexual reproduction both humans have 23 chromosomes, in their sex cells. (Men have 23 in a sperm and women have 23 in an egg cell). These half cells merge to create 1 unique cell, that has characteristics of both male and female. The cells multiply and then a baby is born with a unique set of genes. These cause variations, and remember these variations can carry from generation to generation. As for how variations can increase a chance for survival, variations allow unique gene sets to be made, so that in case of a disease (in this case I’ll use a disease, but it could also include harsh environmental conditions), these unique gene sets may give an individual natural immunity to the disease. How can a variation decrease an organisms chance for survival? Well, s there are many ways that a unique gene set can make it difficult to survive. For example a genetic disease your family has had a history with. These diseases include, but are not limited to, cancer, diabetes, and schizophrenia.

One side of the water molecule has a positive charge, while the other side has a negative charge. What do the charges indicate about the molecule?

Answers

Answer:

That its a nuetral

Explanation:

In the given case of water molecule, the charges shows that it is a polar molecule.

What is a polar molecule?

It is a molecule in which one terminal of the molecule is slightly positive and the other terminal is slightly negative. In the case of water molecule, the unequal sharing of electrons provides the molecule with a slight negative charge close to its oxygen atom and a slight positive charge close to its hydrogen atoms.

When a neutral molecule, possesses a positive region at one terminal and a negative region at the other, it is considered as a polar molecule. The molecules of water attract each other on the basis of the positive end of one water molecule and the negative end of the other molecule of water.

Thus, the charges shows that it is a polar molecule.

Find out more information about polar molecule here:

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Why are some question that scientists are asking about plant at space?

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Answer:

some questions scientist are asking is if plants grow faster in space and if stars can be turned into plants.

Explanation:

I think the reason they ask these questions are because their are different molecules on earth than in space

Many species of microorganisms live on and within the bodies of
larger organisms. These microorganisms affect the health of other
organisms in both positive and negative ways. Which statement describes
the role of a microorganism that has an unhealthy effect on humans?

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Answer:

It would be a parasite, you forgot the answer choices btw.

Explanation:

An animal cell with a 30% salt solution is placed in a beaker with a 20% salt
solution. Which is the correct conclusion if the cell remains in the beaker for an
extended period of time?

Answers

Answer:

the animal cell will burst

Explanation:

If the salt solution in the animal cell is 30%, it means the water is at a 70% concentration. Outside is 20%, so the water is 80%.

Water will enter the cell. Water is at a higher concentration outside the cell (80%) or a lower concentration inside the cell (70%) by the process of osmosis.

Eventually, the animal cell will burst, because it does not have any cell wall to control the swelling of the cell that occurs as water flows in.

A single strand of DNA contains:

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Answer:

A single strand of DNA is a polymer of nucleic acids joined covalently between the phosphate group of one and the deoxyribose sugar of the next to for a “backbone” from which the nitrogenous bases stick out. In its natural state, DNA has two strands wound around each other in a double helix.

Explanation:

Cytosine and adenine

The atomic number is the ___.

• atomic mass
• number of neutrons
• protons plus the neutrons
• number of protons

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Answer:

number of protons is the correct answer

Answer:

number of protons is the correct answer.

What predication can you make about future levels of carbon dioxide CO2 in the atomphere

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Because of all the damage that we are doing to forest and the increasing industrialization the levels of CO2 are just gonna increase making the worlds temperature rise and the poles melt

Pls brainlist

HELP PLEASE
Witch of the following would introduce a bias into an experiment?

A. Publishing your experimental results in a scientific journal.

B. Allowing other scientist to repeat and verify your experimental results.

C. Using a computer to record and store your data.

D. Discarding data that does not fit with your personal expectations.

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Answer:

D. Discarding data that does not fit with your personal expectations.

Explanation:

One of the ways in which bias can be introduced into an experiment is by discarding data that does not fit with one's personal expectations.

Bias in an experiment is the process whereby scientists alter the results of their experiment to achieve their own expected results.

Anomalous values defined by one's expectation can make an experiment highly biased. A  scientist is supposed to be objective in their experimental approaches.

Based on the model, students can conclude all the following valid claims EXCEPT

Answers

Answer:the nucleus carries a positive electrical charge

Thank you! have a good day.

carrying capacity can vary depending on environmental conditions.

True or False

Answers

the answer is true. hope this helsp

Answer:

true

Explanation:

Which of the following processes releases energy to be used by a cell?
A: A phosphate group is added to ATP to form ADP.
B: A phosphate group is removed from ADP to form ATP.
C: A phosphate group is added to ADP to form ATP.
D:A phosphate group is removed from ATP to form ADP.

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The answer is “C.” ADP stands for adenosine diphosphate—di meaning two. When you add an extra phosphate, the di becomes tri (2 to 3). Therefore, adenosine TRIphosphate, or ATP, is released from cellular respiration.
The process that Releases energy is D.

Golden-cheeked warblers are an endangered species of bird that nest only in central Texas. They build their nests using bark from ash juniper trees and feed on spiders and insects. Brown-headed cowbirds sometimes lay eggs in warblers' nests, killing the warblers eggs. Blue jays are known predators of the golden-cheeked warblers' offspring. The survival of golden-cheeked warblers would be most threatened by an increase in the —

Answers

Answer:

C. clearing of ash juniper trees for farmland

Explanation:

Golden-cheeked warblers will be in more danger if "clearing of ash juniper trees for farmland" will increase because juniper trees provide barks to build the nest for Golden-cheeked warblers, if Golden-cheeked warblers will not get enough barks to build the nest, they will not able to reproduce and their population will decrease further.

Hence, the correct answer is "C".

Which phrase describes organisms that formed index fossils?
(a) Are extinct
(b) Had soft parts
(c) Were generally large
(d) Lived in a narrow geographic area​

Answers

Answer:

A.) Are extinct

You should mark me brainliest because I think I'm cool

Options (1), (2), and (4)

Index fossils are usually defined as those fossils that were present on earth for a very short period of time. They were very broadly distributed in almost all parts of the world. They were comparatively smaller in size and comprised of hard parts that were preserved under favorable conditions which are found at many places in the present. These are extinct species. For example, trilobites and ammonites.
These index fossils are very useful because it helps in determining the age of the fossils as well as rocks by applying the radioactive dating method.
thus, the correct answers are options (1), (2), and (4).

A scientist grew an Elodea plant in a freshwater aquarium. She removed a leaf from the plant and placed the leaf in a hypertonic solution containing 8% salt in order to observe what happened to the cells within the leaf. When she looked at the cells under a microscope, she noticed that the cells in the leaf shrunk. Which statement best explains what caused the cells to shrink?

The hypertonic solution caused the water in the cell to move from the cytoplasm into the nucleus.
The salt moved from the hypertonic solution into the cell and chemically bonded with the water.
The salt within the cell moved through the cell membrane into the solution with the higher salt concentration.
The water within the cell moved through the cell membrane into the solution with the lower water concentration.

Answers

Answer:

The water within the cell moved through the cell membrane into the solution with the lower water concentration.

Explanation:

According to this question, a scientist removed the leaf of a plant originally grown in a freshwater aquarium and placed it in a hypertonic solution containing 8% salt. Firstly, A HYPERTONIC SOLUTION is that solution which contains a higher solute concentration than that of the intracellular environment.

Due to this concentration gradient i.e. difference in concentration, OSMOSIS process will be triggered. Osmosis is the movement of water from the region of low solute concentration (the leaf cells) to a high solute concentration (the salt solution) via a semi-permeable membrane (cell membrane).

Therefore, osmotic process causes water to move from the leaf cells into the salt solution via the cell membrane. hence, causing the cells of the leaf to shrink.

What is the effect of temperature on ATP,NADPH, and sugars? Will the increase, decrease, or stay the same?

Answers

Answer:

1. ATP will increase

2. NADPH will increase

3. Sugar will decrease

Explanation:

Had the same problem

The effect of temperature on these molecules are ;

ATP will increase NADPH will also increase  while Sugars will decrease

ATP (  Adenosine triphosphate ) is the molecule in cells which stores energy in cells while transferring the energy needed within cells as well. When the temperature of a cell is raised above the required temperature this molecule will also increase in response.

NADPH is an electron donor which is found in organisms, it also provides the reducing power for certain reactions in the organism ( anabolic ) and the gathering of NADPH oxidase. increases as the temperature of the organism increases.

Hence we can conclude that as temperature increases , ATP will increase , NADPH will increase while Sugars will decrease.

Learn more : https://brainly.com/question/18072409

Why does the skeletal system contain both immovable and movable joints? A. Immovable joints allow my bones to move; movable joints connect my bones. B. Immovable joints connect my bones; movable joints allow my bones to move. C. Both kinds of joints allow the skeletal system to store materials. D. Both kinds of joints allow the skeletal system to protect organs.

Answers

Answer:

The correct answer is - option B. immovable joints connect my bones; movable joints allow my bones to move.

Explanation:

In the skeletal system, both immovable joints and movable joints are present and both have a distinct role in the body and skeletal system. The immovable joints are the joints that provide the stability to the bones that are connected and maintain the structure these joints also helps in protecting the organs.

Movable joints are the joints that are helpful in movement and allow bones that are connected to feely or up to a limit move.

Thus, the correct answer is - option B. immovable joints connect my bones; movable joints allow my bones to move.

Answer:

B

Explanation:

immovable joints connect bones well that a correct answer

the difference between prokaryotic and eukaryotic gene regulation

Answers

Answer:

READ THIS

Explanation:

To understand how gene expression is regulated, we must first understand how a gene codes for a functional protein in a cell. The process occurs in both prokaryotic and eukaryotic cells, just in slightly different manners.

Prokaryotic organisms are single-celled organisms that lack a cell nucleus, and their DNA therefore floats freely in the cell cytoplasm. To synthesize a protein, the processes of transcription and translation occur almost simultaneously. When the resulting protein is no longer needed, transcription stops. As a result, the primary method to control what type of protein and how much of each protein is expressed in a prokaryotic cell is the regulation of DNA transcription. All of the subsequent steps occur automatically. When more protein is required, more transcription occurs. Therefore, in prokaryotic cells, the control of gene expression is mostly at the transcriptional level.

Eukaryotic cells, in contrast, have intracellular organelles that add to their complexity. In eukaryotic cells, the DNA is contained inside the cell’s nucleus and there it is transcribed into RNA. The newly synthesized RNA is then transported out of the nucleus into the cytoplasm, where ribosomes translate the RNA into protein. The processes of transcription and translation are physically separated by the nuclear membrane; transcription occurs only within the nucleus, and translation occurs only outside the nucleus in the cytoplasm. The regulation of gene expression can occur at all stages of the process (Figure 1). Regulation may occur when the DNA is uncoiled and loosened from nucleosomes to bind transcription factors (epigenetic level), when the RNA is transcribed (transcriptional level), when the RNA is processed and exported to the cytoplasm after it is transcribed (post-transcriptional level), when the RNA is translated into protein (translational level), or after the protein has been made (post-translational level).

Answer:

Prokaryotic gene expression is primarily controlled at the level of transcription. Eukaryotic gene expression is controlled at the levels of epigenetics, transcription, post-transcription, translation, and post-translation.

Please help me!!!!!!!!!!!

Answers

Answer:

Its option 3 hope this help with your test good luck

How do the circulatory and nervous systems work together to maintain homeostasis | ASAP

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The cardiovascular system helps maintain homeostasis by continually supplying the central nervous system--the brain and spinal cord--with oxygen and glucose. Brain cells start dying after just one minute without oxygen. The brain is the control center for all of the body's homeostatic processes.

Answer:

The circulatory and the nervous systems work together to maintain homeostasis because the circulatory system gives your brain a lot of oxygen and glucose while your brain regulates your heart rate and blood pressure. Meanwhile, your bones are busy making new blood cells. Working together, these systems maintain  homeostasis.

Hope this helps!

What evidence does not support the evolution of chloroplasts and mitochondria from prokaryotic cells?

A. O Fossilized remains of archaebacteria
B. O Double membranes of the organelles
c. Similar methods of reproduction
D. O Presence of circular DNA


Answers

Answer:a

Explanation:

What process must happen before this process depicted below?

Answers

Answer:

hopes it helps

Explanation:

In glycolysis, glucose molecule is converted into pyruvate molecules .

It can't be cellular respiration because it starts always with glucose i.e glycolysis. But here it is the process after glycolysis (starting from pyruvate) and changing into lactic acid. It's an aerobic respiration called as lactic acid fermentation.

Answer:

Glycolysis

Explanation:


true or false?
plz answer

Answers

Answer:

True

Explanation: This is to ez

What causes mutations during protein synthesis?

A) A wrong base becomes a permanent part of a new DNA sequence.
B) Most mutations happen spontaneously as DNA replicates itself.
C) A great many mutations occur due to chemicals in the environment.
D) Mutations do not occur during the process of protein synthesis.

Answers

Answer:

B is the correct answer i believe

THE IMAGE ABOVE DEPICTS ____ WAVES (PLEASE HELPP ILL GIVE 85 POINTSS)

Answers

Answer:

I think its Transverse waves

Answer:

Its actually a surface wave I got this right on my test lol

Explanation:

Which effect does the sun's energy have on a comet?
A. It causes the comet to form a bright tail.
B. It causes the core of the comet to melt.
C. It causes the comet to turn toward earth.
D. It causes the comet to break apart.

Answers

Answer:

The answer is B because the sun melts the core of the comet

The sun's energy causes the comet to form a bright tail. The correct answer is A.

When a comet approaches the Sun, the Sun's energy causes various effects on the comet.

As the Sun heats up the comet, it causes the icy nucleus of the comet to vaporize and release gas and dust into space.

This process is known as outgassing. The released gas and dust form a glowing envelope called a coma around the nucleus.

Additionally, solar radiation and solar wind push the released gas and dust away from the comet, forming a glowing tail that points away from the Sun.

So, the correct option is A.

To know more about Comet, click here:

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How can you decrease your height in under a week?​

Answers

Don't eat vegetables & stuff that makes u grow i guess

Rooted plants are most likely found in which aquatic zone?
a. pelagic
b. littoral
benthic
d. all of the above
C.
Please select the best answer from the choices provided

Answers

Answer:

littoral

Explanation:

6
An antibiotic label says to take it for fourteen days. If we stop taking the medication after ten days, what would most likely
happen to the bacteria in our body?
A The bacteria causes the human immune system to stop producing antibodies to fight disease.
B A population of bacteria resistant to the antibiotic appears.
The strain of bacteria allows the human immune system to build up resistance.
The bacteria builds up a resistance to all types of antibiotics, turning into a "superbug".

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i think the answer is A.

what is the parts of earths atmosphere help ill give brainliest *URGENT*

Answers

troposphere, stratosphere, mesosphere, thermosphere, exosphere
The parts of earth atmosphere consists of troposphere, stratosphere,mesosphere, thermosphere , and exosphere
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