Answer:
I think it's B.
Explanation:
hope this helps
Answer:
B. Egg and sperm cells must only have the number of chromosomes so that when they combine the number will equal 46.
Explanation:
The purpose of meiosis is to shuffle genetic information and cut the cellular chromosome number in half, from 46 chromosomes to 23 chromosomes. In this way, when an egg and sperm cell combine during fertilization, the resulting embryo will inherit the appropriate amount of unique genetic information from each parent.
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HELP ASAP PLEASE!
Jonathan and Molly performed a similar lab except that in their lab they tested a slurry made from crackers. Their results show that crackers contain both protein and fat. After checking the cracker package, the students were surprised to find that protein and fat are not listed on the nutritional label. No other groups in their class have results that show protein and fat present in the sample. Describe one factor that couldcontribute to their erroneous results:
Answer:
The tubes used in the lab were not thoroughly cleaned out and contains substances with proteins and lipids.
Explanation:
Proteins and lipids are macromolecules and polymers made of monomeric units. In the experiment, the error was due to the reuse of the contaminated test tubes. Thus, option B is correct.
What are proteins and lipids?Proteins and lipids are the major biological molecules that are polymers and made of smaller units (monomers) linked together by various chemical bonds. The proteins are made of amino acids and lipids are made of fats and glycerol.
The errors in the cracker experiment can be due to the presence of contaminated, re-used test tubes that might have residuals left of fats and proteins in them. The contaminants affect the results and interfere with the biochemical tests.
Therefore, option B. the re-used test tubes might have protein and fat contaminants.
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Your question is incomplete, but most probably your full options were, Describe one factor that could contribute to their erroneous results. Which of the following would be considered a source of error in their procedure?
A) The sample cooled down as it sat at room temperature.
B) Test tubes were re-used and may have contained contaminants.
C) Several lab groups conducted the protein test at the same time
D) They used test tubes of a different size than those used by the others.
You are unable to lift an object. Which property makes the object difficult to lift?
A. density
B. mass
C. volume
D.weight
The appropriate response will be Option D (weight).
The weight of such a specific individual or object, defined as kilograms or milligrams as well as tons, seems to be how hefty something is.
The other given options such as:
Density - This notion is essential because it enables us to discern which compounds swim and which components or materials sink in what seems like a liquid.Mass - A dimensional total quantity that represents the material's quantity of substance.Volume - The storage space that a particular material occupies whereas the mass would be the quantity it holds.Such given choices aren't connected to the given scenario. Thus the above is the perfect answer.
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A study was created to test the effects of jazz on people’s sleep patterns. The hypothesis of the experiment was that if people listened to jazz music as they fall asleep, they will sleep for longer periods of time. For the experiment, 2 groups of people were created. One group was placed in a quiet room where they went to sleep and they were timed on how long they slept. The other group was placed in a room where jazz music played softly as they began to sleep and played throughout the night. As each group awoke, their sleep times were monitored.
Dependent Variable: ______________________ Control Group: ____________________________
Independent Variable: _____________________ Experimental Group: ________
Answer:
Dependent variable - sleep times
Independent variable - jazz music/silence
Control group - Group 1. The group that was kept in a silent room
Experimental group - Group 2. The group placed in a room with jazz music.
Explanation:
The dependent variable is the actual variable to be measured during an experiment. The value of the dependent variable is dependent on the independent variable supplied. In this case, the dependent variable is the duration of sleep of the different groups.
The independent variable is supplied by the experimenter and is often manipulated to see the effects it will produce on the dependent variable. In this case, the jazz music and the silence in the rooms respectively represent the independent variable.
The control group receives no treatment variable and represents the group that is often used as the benchmark to measure the effects of treatment variables on experimental subjects. In this case, the control group is the group that was placed in a room without jazz music.
The experimental group is the group that receives the treatment variable and in this case, the group that slept in the room filled with jazz music.
Dependent Variable: The dependent variable in this experiment is the sleep duration or the length of time each participant slept.
Control Group: The control group in this experiment is the group of people placed in a quiet room where they went to sleep without any jazz music playing. This group serves as a baseline for comparison to evaluate the effects of jazz music on sleep duration.
Independent Variable: The independent variable in this experiment is the presence or absence of jazz music while falling asleep and throughout the night.
Experimental Group: The experimental group in this experiment is the group of people placed in a room where jazz music played softly as they began to sleep and continued to play throughout the night. This group is exposed to the independent variable (jazz music) to test its effect on sleep duration.
The purpose of this study is to determine if the independent variable (jazz music) has an impact on the dependent variable (sleep duration) by comparing the control group's sleep duration to that of the experimental group.
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You need to find out why the GBR water is inhibiting (stopping) photosynthesis in the algae. The three major parts of photosynthesis are PSI, PSII and the Calvin cycle. The database has provided 3 things that could be inhibiting photosynthesis: high sea temperatures, paraquat, and diuron.
Answer:
Explanation:
The question is not complete below is the remaining part of the question
Justify your choice by writing a hypothesis to explain how it has stopped the algae from making ATP, NADPH and sugars. You will be able to revise your hypothesis as you do more experiments
Explanation:
The hypothesis will be
High sea temperature inhibit Algae growth
Herbicides reduces algae photosynthesis rate
Algae respond to temperature differently some thrive at a low temperature, some at a moderate temperature but when the temperature is very high the rate of photosynthesis will reduce because they can not undergo the normal body physiological function as a result of harsh environment. In green plant at a very high temperature stomata closes to regulate water loss this prevent Carbon dioxide from coming in and photosynthesis rate reduces
Paraquat and Diuron are herbicide that prevent the growth of plants, when they are sprayed Algae is affected they die from immediate action of this chemical and their colour changes since chloroplast the green pigment is where light hit for photosynthesis to occur when the color changes the active site is affected photosynthesis can no longer occur.
Answer:
Diuron
Explanation:
Increasing the temperature only decreases the sugar, not the ATP and NADPH. I predict that Diuron will be inhibiting photosynthesis because photosynthesis as a whole should not work if Photosystem II is interfered with. Also, because Paraquat only lowers NADPH and sugar and not ATP, Diuron is the only choice left.
Jordan's grandmother uses the juice from squeezed lemons to remove stains from his shirt. He hypothesizes that the juice is the only part of the lemon that is effective at removing the stains, because it’s an acid. Which two steps would help Jordan determine whether his hypothesis is scientifically supported?
He should test the acidity of different parts of the lemon, including the juice, pulp, and skin.
He should conduct an opinion poll of residents to see if they agree with his hypothesis.
He should make identical stains on T-shirts and see whether different parts of the lemon will remove the stain.
He should find literature on housekeeping websites that support the use of lemon juice at removing stains.
He should compare lemon juice with other acidic juices to see if they all remove stains.
Answer:
He should make identical stains on T-shirts and see whether different parts of the lemon will remove the stain
Explanation:
Answer:
To test the validity of this hypothesis he should test the acidity of different parts of the lemon including the juice, pulp and skin of lemon.
and
He should also compare the lemon juice with other juices to know weather other juices are also helpful in removing stains from the t-shirt.
Explanation:
Edmentum/Plato
What does universal solvent mean
Answer:
water
Explanation:
, water is called the "universal solvent" because it dissolves more substances than any other liquid. This is important to every living thing on earth. It means that wherever water goes, either through the ground or through our bodies, it takes along valuable chemicals, minerals, and nutrients.
Describe 3 main organelle differences between plant and animal cells.
Answer:
chloroplasts, the cell wall, and vacuoles.
Explanation:
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a student started a module to show the cycling of carbon Food > cellular respiration > carbon dioxide > ?
what should the student add to the next module
Answer:
rspon poirlmunaracie
Explanation:
which is more useful to biologists studying ancestry homologous structures or analogous structures?
2)
Many disorders are due to the inability of an individual to break down a particular chemical.
Sometimes these disorders can be treated by giving the affected individual the appropriate
A)
enzymes
B)
antigens
C)
chromosomes
D)
organelles
anyone say pls for my friend
needed quick
Answer:
1)a
Explanation:
What is the proper way to to TYPE the scientific name: calvatia craniiformis (Give at least 2 things)
Answer:
Omalycus Raf and Hypoblema Lloyd
Explanation:
How does a molecular compound compare to the elements that make up the compound?! Plz help
Answer:The only difference between a molecule of a compound and a molecule of an element is that in a molecule of an element, all the atoms are the same. For example, in a molecule of water (a compound), there is one oxygen atom and two hydrogen atoms. But in a molecule of oxygen (an element), both of the atoms are oxygen.
Explanation:here is some information that might help
What kind of joint is pictured in the diagram below? ASAP
its c
:) hope that help
What are the disadvantages of polygamous in animals
Answer:
The principal disadvantage of monogamy is a lack of variety. Monogamy has the potential to lead to routine, and possibly boredom. People often equate excitement in a relationship with the ability to be with a number of individuals, potentially as part of an open or sometimes polyamorous relationship.
Explanation:
When light intensity is below above 400 umol photons/m2/s, do sun plants or shade plants have a higher rate of photosynthesis?
Answer:
-Abiotic factors such as light, water, and temperature
-The more light, the faster the plant is able to photosynthesize, however, plants reach its level of maximum photosynthesis if the intensity of light is too high
-Temperatures above or below range of 0 degrees Celsius and 35 degrees C can cause damage to enzymes, ceasing photosynthesis
-If too much or too little water is applied, plant cells may wither and die, or explode
Explanation:
When environmental light intensity is below 400 umol phs/m²/s, shade plants have a higher photosynthetic rate. Above this level, sun plants have a higher rate of photosynthesis.
---------------------------------
The photosynthetic rate depends in part on the plants' environment.
Being all conditions favorable -light availability, water, and temperature level-, photosynthesis intensity increases with light intensity.
The more light intensity and exposure, the better and faster the plant photosynthesizes.
However, there is a limit for all these environmental factors over which the photosynthetic rate can be affected or reach its maximum point.
Concerning light, there is an intensity level when exposed to a standard unit of light intensity, at which plants express their highest photosynthetic rate.
It depends, among other reasons, on the type of plant.
Shade plants
Low levels of light are enough for plants that grow in the shade.
Shade plants can express their highest photosynthetic rate at intensities of 400 umol photons/m²/s. From this point on, the photosynthetic rate remains equal.
Sun plants
On the other hand, plants that grow in the sun need much higher levels of light to express their highest photosynthetic rate.
Sun plants keep increasing their photosynthetic rates at intensities higher than 400 umol photons/m²/s, expressing their highest performance near 1000 umol photons/m²/s.
Comparing both types of plants,
At lower light intensity (0-300 umol photons/m²/s), the photosynthetic rate of shade plants is higher than the one of sun plants.
Near 400 umol photons/m²/s, the photosynthetic rate of both types of plants is almost equal.
Over 400 umol photons/m²/s, the photosynthetic rate of shade plants reaches their maximum level, while the sun plants one keeps increasing.
Between 800 -1000 umol photons/m²/s, the photosynthetic rate of sun plants reaches their maximum level.
According to this information,
below 400 umol photons/m²/s, shade plants have a higher rate of photosynthesisabove 400 umol photons/m²/s, sun plants have a higher rate of photosynthesis
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carry electrical charges at opposite poles.
A . nonpolar bonds
B. polar bonds
C. hydroelectric bonds
D. lonic bonds
Answer:d
Explanation:
Enter the correct 4 digit code (no spaces)
Answer:1243
Explanation:
Answer:
4123
Explanation:
I'm working on the same except mine says level two
what happens when temperature increases? ( give THREEE examples !!!!!!
Answer:
molecules in the gas move faster. impacting the gas container more frequently and exerting a greater force. moisture most likely will increase too.
Explanation:
Why might a jogger develop lactic acid in his or her muscles
Answer:
here
Explanation:
the more your body is moving and is pumping blood there is in your muscles which start to produce lactic acid
The polar ions of sodium calcium and potassium would be transported into a cell using which type of transport
Answer:
A primary ATPase universal to all animal life is the sodium-potassium pump, which helps to maintain the cell potential. The sodium-potassium pump maintains the membrane potential by moving three Na+ ions out of the cell for every two K+ ions moved into the cell.
Explanation:
please mark as brainlist answers
The diffusion of a substance into or out of a cell requires
Answer:
Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane. Gas exchange in gills and lungs operates by this process. Carbon dioxide is produced by all cells as a result of cellular metabolic processes.
Explanation:
The diffusion of a substance into or out of a cell requires a process called diffusion, by which the molecules pass out through the plasma membrane.
What is diffusion?Diffusion is a key mechanism for material transfer within cells and for the passage of critical tiny molecules across the cell membrane. This process controls the exchange of gases in the gills and lungs. All cells release carbon dioxide as a byproduct of biological metabolism.
There are two processes by which the molecules pass through a semi-permeable membrane. The processes are osmosis and diffusion. When the material transfer from low concentration to higher concentration.
Thus, diffusion is the process by which molecules travel through the plasma membrane to allow material to enter or exit a cell.
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Plz help with the homework
Answer:
The lagging strand contains Okazaki fragments
Explanation:
During DNA replication, the two strands of DNA are separated and replicated via distinct mechanisms.
The leading strand is synthesised continuously by DNA polymerase in the 5'-3' direction.
However, DNA polymerase can only work in one direction (5'-3') so the other strand cannot be synthesised continuously in the reverse direction.
The other strand, the lagging strand, has to be synthesised discontinuously in the 5'-3' direction. This forms fragments- called Okazaki fragments - that are later joined up.
This is much easier to visualize than to explain, check out the video titled "DNA replication - 3D" on Y0utube by yourgenome to see it in action!
When carbohydrate consumption exceeds the body's immediate needs for energy, glycogenesis ____________ .
Glycogen storage space in the liver and muscles is limited. When glycogen stores are full, use of glucose for energy ____________ and oxidation of fat for energy ____________ .
Overall, when carbohydrate intake is excessive, lipogenesis ____________
Increase or decrease
Answer:
When carbohydrate consumption exceeds the body's immediate needs for energy, glycogenesis decreases.
The process of conversation of stored glycogen in the liver and muscles to glucose is Glycogenesis. It takes place when the blood glucose drops,below certain levels and the body cells need glucose for biochemical activities.Therefore, when there are excess CHO consumption,more glucose would be in the blood,and thus no need for glycogenesis.(breakdown of glycogen)
Glycogen storage space in the liver and muscles is limited. When glycogen stores are full, use of glucose for energy __Increases__________ and oxidation of fat for energy ___decreases_________ .
Definitely, this is a simple logic.As the storage for glycogen is limited,excess glucose move into the blood, since they can not be converted to glycogen.The glucose is expended through cellular reduce the amount in the blood. Therefore, Gluconeogenesis, the production of glucose from non-CHO substances drops. Hence beta- oxidation drops.
Overall, when carbohydrate intake is excessive, lipogenesis increases.The process of converting excess CHO to fatty acids.Biochemically it is the process of converting the Carbon precursor of acetyl co -A to fatty acids.Therefore this increases to synthesized more fatty acids from CHO
Explanation:
What are the conditions favouring AIR-BORNE disease?
Answer: cold, highly populated areas
Explanation: flu is a great example of an airborne disease. flu is spread mainly at parties, stores, and big cities. Diseases like these like cold air, as warmer air kills it. This is why you should wash your hands with warm water.
hope this helps! Please let me know<3
Answer:
Many common infections can spread by airborne transmission at least in some cases, including but not limited to: CO.VID-19; measles morbillivirus, chickenpox virus; Mycobacterium tuberculosis, influenza virus, enterovirus, norovirus, and less commonly coronavirus, adenovirus, and possibly respiratory syncytial virus.
Air-borne diseases are favoured in various ways like if the pollution rate is high then the spreading of air-borne diseases will be high.
The air-borne disease can also be spread in case if a sick person sneezes or coughs the microbes that cause the disease will be spread in the air and could be inhaled by healthy people which will make them sick.
Can a species switch from being an r-species to a K-species or visa versa?
Answer:
as causas de las extinción de una especie pueden ser muchas, como la destrucción de su hábitat natural, la caza o captura de animales exóticos, la contaminación, la deforestación (la desaparición de los bosques por la tala de árboles) o el cambio climático, que son consecuencia de la intervención de los seres humanos. Aunque esto también puede relacionarse con distintos fenómenos naturales como inundaciones, incendios, o la llegada de enfermedades.
Explanation:
En algunas ocasiones y por diferentes motivos, las especies de animales empiezan a desaparecer, y esto se conoce como extinción. A pesar de que escuchamos esta palabra muy a menudo, alguna vez te has preguntado, ¿por qué una especie se extingue y qué pasa cuando esto sucede?
Hydrogen bonds can form between regions of polar molecules that are
A- negatively charged
B- non-polar
C- oppositely charged
D- uncharged (Neutral)
Answer:
c
Explanation:
Answer:
I belive it is B or D
Explanation: Hope Dis Helped :D UWU
What is NOT true about Pure substances.
O they can be elements or compounds
O they can be homogeneous or heterogeneous
O they are made of only one type of matter
O all of the statements are true
Which of the following conclusions can be made about the sedimentary layers?
(A) bed 2 was deposited after bed 3
(B) bed 1 is the youngest
(C) bed 3 was deposited before bed 1
(D) bed 2 was deposited before bed 3
Diffusion is an important process in animals and plants.
The movement of many substances into and out of cells occurs by diffusion.
Describe why diffusion is important to animals and plants.
In your answer you should refer to:
• animals
• plants
• examples of the diffusion of named substances.
Answer:
Diffusion helps animals in respiration. The cells in an animal's body need glucose and oxygen for respiration. Both these are carried in the blood. When blood reaches the cells the molecules of glucose and oxygen diffuse out of the blood and into the cells. As cells use up the glucose and oxygen they produce waste chemicals and carbon dioxide.
Diffusion is a very important process for photosynthesis where carbon dioxide from the stomata diffuses into the leaves and finally into the cells. This helps the plants to photosynthesize and produce more food.
Example for animals: Animals using glucose and oxygen in diffusion.
Examples for plants: Plants using carbon dioxide to photosynthesize.
