What is a possible reason for extinction?
The number of habitats falls below a critical level.
Too many resources
Less competition
Less number of new predators
Answer:
The number of habitats falls below a critical level.
Explanation:
The possible reason for extinction is that the number of habitats falls below a critical level. This makes it impossible for organisms to survive.
A habitat is the dwelling place of living organism in an ecosystem. The resources and other materials that ensures the survival of an organism are made available in the habitat. When a habitat begins to thin out and can no longer support organisms, then extinction will ensue.) Some students investigated the effect of the different concentrations of sugar in four drinks, A, B, C and D, on the movement of water across a partially permeable membrane. The students: • made four bags from artificial partially permeable membrane • put equal volumes of 5% sugar solution in each bag • weighed each bag containing the sugar solution • placed one bag in each of the drinks, A, B, C and D • after 20 minutes removed the bags containing the sugar solution and weighed them again. (i) The bag in drink A got heavier after 20 minutes. Explain why.
A contains 0.1% sugar solution.
B contains 4.2% sugar solution.
C contains 6.9% sugar solution.
D contains 10.6% sugar solution.
Answer:
Concentration of sugar in the bag was higher than in the drink or higher concentration of water outside the bag or in the drink boiling tube so water moved in (to the tubing by osmosis.
Explanation:
Concentration of sugar in the bag was higher than in the drink or higher concentration of water outside the bag or in the drink boiling tube so water moved in (to the tubing by osmosis.
The bag in drink A got heavier after 20 minutes because the water from outside traveled inside the bag via osmosis. Therefore, option (A) is correct concentration of the drink.
What is osmosis?The process of osmosis refers to the transfer of water molecules from a solution that contains a high concentration of water molecules to a solution that contains a lower concentration of water molecules. This transfer takes place through the membrane of a cell, which is only partially permeable.
The states of hypertonicity, isotonicity, and hypotonicity are the three categories of osmotic conditions.
Within a live cell, osmosis plays a significant part in the movement of nutrients as well as the excretion of metabolic waste products. Within a cell, it regulates the flow of water and the levels of intracellular fluid so that they are more stable. Osmosis is responsible for both the regulation of cell-to-cell diffusion as well as the preservation of the mechanical structure of a cell.
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What is one difference between you and a protist?
A) Your cells have a nucleus; those of protists do not.
B) During your life, you grow considerably in size; a protist doesn't.
C) All your cells can carry out all life functions on their own; those of protists cannot.
D.) Your cells are capable of division, those of a protist are not.
Answer:
A) Your cells have a nucleus; those of protists do not.
Explanation:
Your cells are eukaryotes (which DO have nuclei) and protists don't.
state two factors that determine choice of a microscope during biological investigations
Answer:
An optical microscope is often one of the central devices in a life-science research lab. It can be used for various applications which shed light on many scientific questions. Thereby the configuration and features of the
One of the first things to consider when selecting a research microscope is the type of specimen you want to explore. For fixed samples mounted on a thin glass slide, you can use an upright microscope. Living cells demand special characteristics of the microscope because they are kept in relatively large cell culture vessels filled with cell culture media.
Explanation:
I hope this was what you were looking for and I hope it helps!
Describe one example of how a cell's interior is dynamic. I will give brainiest to whoever answers correctly. Please Please Please help.
Answer:
i can obsure things
Explanation:
What are the layers of the earth
Answer:
inner core,outer core,mantle,crust
Is sickle cell anemia caused by genetic or environmental factors
Answer:
Genetic, geographic & cultural factors that cause sickle-cell anemia. It is important to note that even genetic diseases are caused by multiple social, environmental and biological factors. This is particularly true in the case of sickle-cell anemia, a genetically inherited blood disorder usually found in people with West African ancestry (PBS 2001).
Answer:
genetic
Explanation:
i searched it up on google
Bile juices help in the breakdown of fats. An injury to the
may cause a decrease in the production of bile juices. This decrease in bile juices may lead to decreased production of
.
Answer: Liver and then Fatty Acids
Explanation: Because I got it right on the test.
Bile salts, which are necessary for the emulsification and absorption of fats in the small intestine.
What is bile juice?Bile juice is a yellow-green liquid that is produced in the liver and stored in the gallbladder. It is made up of bile salts, cholesterol, and waste products such as bilirubin. Bile helps in the digestion and absorption of fats in the small intestine. It works by emulsifying fats into smaller droplets, which increases the surface area available for enzymes to break them down.
Bile also helps in the absorption of fat-soluble vitamins, such as vitamins A, D, E, and K. Bile is released into the small intestine in response to the hormone cholecystokinin, which is secreted when fatty foods enter the stomach. Inadequate production or secretion of bile can lead to problems with digestion and absorption of fats, such as diarrhea, malnutrition, and deficiencies of fat-soluble vitamins.
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Explain how fermentation is useful in the preservation of food products
Answer:
To preserve and flavor the products.
Explanation:
Fermentation is a microbiological process of transformation of carbohydrates into alcohols, acids, aldehydes, ketones, and gases. As the fermentation takes place, microorganisms, such as bacteria or yeast, are needed to convert carbohydrates into organic acids or alcohol, under anaerobic conditions.
true or false cystic fibrosis and phenylketonuria are common autosomal dominant disorders brainly
Answer:
False
Explanation:
Cystic Fibrosis and Phenylketonuria are common autosomal recessive disorders
Answer:
False
Explanation:
They're recessive
Use the drop-down menus to complete each sentence.
are organisms that contain more than one cell with membrane-bound organelles and a nucleus.
Organisms that contain only one cell and do not contain a nucleus or membrane-bound organelles are known as
.
Answer:
- Eukaryotes are organisms that contain more than one cell with membrane-bound organelles and a nucleus.
- Organisms that contain only one cell and do not contain a nucleus or membrane-bound organelles are known as prokaryotes.
Explanation:
According to their structural and functional complexity, organisms can be classified into eukaryotes and prokaryotes.
Eukaryotic organisms are formed by cells that have a true nucleus -where DNA is located- and specialized structures called organelles, with a system of endomembranes that compartmentalize the intracellular space. These organisms are usually pluricellular, given the ability of eukaryotic cells to group together to form tissues. Prokaryotic organisms are single cells, lacking a nucleus - genetic material is scattered in the cytoplasm - and do not possess organelles. The prokaryotic cells that form these organisms are incapable of binding together, so they do not form tissues.Some unicellular organisms are prokaryotic cells, like some parasitic microorganisms, such as amoebas.
Answer:
1)eukaryotes
2)prokaryotes
Explanation:
just took it on edge(:
Why is the transfer of energy essential to living organisms?
Answer:
All living organisms need energy to grow and reproduce, maintain their structures, and respond to their environments. Metabolism is the set of life-sustaining chemical processes that enables organisms transform the chemical energy stored in molecules into energy that can be used for cellular processes.
Explanation:
Hope it helps :)
Have a good day/night
Brainliest pls
Which two human activities are believed to be the greatest contributors to global warming?
nonnative species introduction and the burning of fossil fuels
deforestation and the burning of fossil fuels
deforestation and nonnative species introduction
non-sustainable harvesting and nonnative species introductio
Answer:
B
Explanation:
well deforestation is ruining are forests and burning fossil fuels is pollution
Which of the following waves has the longest wavelength?
Answer:
The Bottom Left corner graph has the longest waves.
Explanation:
The waves are spread out and have a huge distance in between each crest.
The longer the wave, the less amount of energy being emitted. The shorter the wave, the more energy that is being emitted.
#teamtrees #WAP (Water And Plant)
I am generally found both inside and outside of the nucleus [in eukaryotic cells]
DNA ONLY
RNA ONLY
BOTH DNA AND RNA
Answer:
In eukaryotic cells, the cytoplasm includes all of the material inside the cell and outside of the nucleus. All of the organelles in eukaryotic cells, such as the nucleus, endoplasmic reticulum, and mitochondria, are located in the cytoplasm.
Explanation:
How do plants use chlorophyll in photo
Answer:
Chlorophyll, which resides in the chloroplasts of plants, is the green pigment that is necessary in order for plants to convert carbon dioxide and water, using sunlight, into oxygen and glucose. During photosynthesis, chlorophyll captures the sun's rays and creates sugary carbohydrates or energy, which allows the plant to grow.
Explanation:
I’m doing a test and all my makeup work and I really need this done so can y’all pls answer thanks
Answer:
Only active transport requires ATP
Explanation:
Passive transport is the movement of molecules across the cell membrane without the need for energy. These substances usually move from a high concentration to a low concentration.
Active transport relies on energy from ATP to move substances across the plasma membrane. This is usually required when moving substances against their concentration gradient.
3. You raise your hand in class to answer a question that the professor asked. Which
muscle type did you just use? Briefly explain your answer.
Answer:
you are using your shoulder muscle. The reason you are using this muscle is when you put your arm strait up there is no reason to use a bicep or tricep muscle.
Explanation:
Which part of the energy pyramid will we find the highest amount of toxins?
a.) level one
b.) level two
c.) level three
d.) level four
Answer:
level 3
Explanation:
Pls answer yall thanks
Answer:
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3. Which landforms are found on the Moon? (Select all that apply.)
craters
lakes
mountains
plateaus
•Science•
Answer:
Highlands Rilles Trenches divots
Explanation:
The landforms found on the Moon are craters, mountains, and plateaus. Options A, C, and D are correct.
The moon’s three major landforms are the craters, the highlands, and the maria, but there are many other prominent features on the moon’s surface.
Some impact craters, for example, have bright rays radiating outward from the center of the crater. The moon also has several rilles. Rilles are long, narrow tunnels or trenches.
There is no tectonic plate on the moon. There is no volcanic activity on the moon. Almost all of the mountains on the moon are created by asteroids impacting the past.
At the beginning of the moon’s history, there were many large asteroids in the Solar System.
Therefore options A, C, and D are correct.
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DNA Fill the blanks
- A _____________ is a change in DNA that may result in a malformed protein
-A ____________ mutation occurs when a nitrogen base in DNA changes,but the associated amino acid remains the same
- In a ____________ mutation a DNA base is changed which results in a different amino acid
- A ________ mutation results when an amino acid is inserted or deleted causing the entire sequence that follows to be different.
Answer:
A mutation is a change in DNA that may result in a malformed protein A silent mutation occurs when a nitrogen base in DNA changes, but the associated amino acid remains the same In a missense mutation a DNA base is changed which results in a different amino acid A frameshift mutation results when an amino acid is inserted or deleted causing the entire sequence that follows to be different.Explanation:
DNA, a nucleic acid used to store genetic information, is made up of nucleotides or bases. These pair up as base pairs to make the DNA double helix. During the cell division process, random changes inside the genome can occur.
These mutations cause errors in DNA produced within the cell; and they may involve small single nucleotide polymorphisms where single nucleotides are changed and large-scale additions or deletions involving several genes.
Warrior ants have a chemical signal that tell other ants in the family not to attack. Through
natural selection these ants have_______
Name disease Resistant cattle
breeds
Answer:
you should try asking brain- ly
Answer:
A region on chromosome 1 was associated with infectious keratoconjunctivitis (pinkeye) in cattle, which is heritable. Bos indicus breeds were observed to have better resistance to tick infestation and tick-borne diseases, as revealed through higher hemolytic complement activity
Which quality best describes a producer with an absolute advantage?
efficient
fast
accurate
prolific
Answer:
A
Explanation:
Trust me :)
The quality that best describes a producer with an absolute advantage is efficient.
What is a producer?In business, a producer can be defined as a person/industry who generates and supplies goods and/or services.
Some features of producers include:
Efficiency Versatility to challenging conditionsCreative skillsProducers need to combine different labor and capital to generate a particular output, ie, a good or service.
In conclusion, the quality that best describes a producer with an absolute advantage is Efficient.
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Cellular respiration occurs in a series of steps. If pyruvate enters the mitochondrion,
how much total energy can we assume will be produced?
8 molecules of pyruvic acid
38 molecules of ATP
2 molecules of ATP
14 molecules of oxygen
Answer:8
Explanation:
Pyruvic acids are transformed by oxidative decarboxylation into acetyl-CoA, molecules of NADH, and molecules of CO2 when they enter step two of aerobic cellular respiration producing 38 ATP, hence option b is correct.
What is Cellular respiration?
Since it joins or links the Krebs cycle and glycolysis, this procedure is also known as the link reaction or transition step.
One glucose molecule undergoes chemical processes that result in two pyruvic acid molecules, two ATP molecules, ten NADH molecules, and two FADH2 molecules.
Therefore, as a result, we know that the four pyruvic acid molecules make acetyl-CoA, which then enters the Krebs cycle to produce at the end 38 molecules of ATP are formed.
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PLEASE HELP IM IN DESPERATE NEED OF GETTING A 100%!!!! I WILL MARK BRAINLIEST TO WHOEVER ANSWERS FIRST!!! MAYBE VENMO!
Here is below:
instructions
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Documents
Constructing a Device to Regulate the Release of Energy - Student Guide
Constructing a Device to Regulate the Release of Energy - Rubric
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Using the diagram above, in what direction will water flow?
into the cell
out of the cell
into and out of the cell at equal rates
Answer:
According to the diagram, where there is the highest concentration of solutes in the cytoplasm, the water will flow into the cell.
Explanation:
Taking into account a difference in solutes concentration between the extracellular and intracellular spaces, the movement of water will be from the space with the lowest concentration of solutes to the space with the highest concentration of solutes, which explains the osmosis.
In the diagram, as there is a higher concentration of solutes in the intracellular space —cytoplasm— the water will pass from the outside to the inside of the cell, due to the force generated by a concentration gradient. The movement of water will be maintained until equilibrium of solute concentrations is reached.
Please dont answer to my question if you dont have an answer
Here is the Homo sapiens amylase alpha 1A mRNA sequence obtained from an individual incapable of digesting starch.
AUGAAGCUCUUUUGGUUGCUUUUCACCAUUUAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
Give the sequence of the first 10 amino acids in the protein (translate the first 30 nucleotides in the coding sequence). Use the full names for each amino acid.
Answer:
AUG - methionine
AAG - lysine
CUC - leucine
UUU - phenylalanine
UGG - tryptophan
UUG - leucine
CUU - leucine
UUC - phenylalanine
ACC - threonine
AUU - isoleucine
Explanation:
Break the mRNA sequence into codons of three nucleotides each and identify what amino acid codes with each codon.
UAA is a stop codon and signifies the end of translation so any nucleotides after it will not be translated.
Hope that helps.
Population of Rabbits based on Leg Length
Generation
Number with short Number with medium
Number with long
lege
135
155
1
2
3
97
23
22
95
150
5
18
15
13
175
180
97
A student is comparing the leg lengths of the rabbits in a population. She wonders if natural setection is occurring. She asks you to
evaluate her conclusions. Select ALL that are NOT supported by her data.
A)
The rabbits with medium length legs are the most stable and thus will out
survive the others.
B)
Medium length legs appears to be neither an advantage or disadvantage in
the current environment.
The rabbits with longer legs have a selective advantage that allows them
to survive and reproduce.
It is unlikely that evolution is occurring because none of the traits have
disappeared from the population
A predator is the likely source of natural selection in this population as the
rabbits with longer legs are more likely to escape compared with those
with the shorter legs
D)
E)
Answer:A and D
Explanation:
It’s the USA test prep question
The following data indicate that the statement "the medium rabbit leg is stable and evolution is unlikely to happen" is false. Hence, options A and D are the correct options for the statements.
What is the role of natural selection?Natural selection selects organisms that are best suited to their environment, and these individuals multiply to increase their population size. In this case, generation after generation, the population of short-legged rabbits decreased from 23 to 13. This indicates that the small-legged rabbits were eaten by the predators, resulting in a reduction in their number. The number of middle-legged rabbits did not vary much, so they did not gain a selective advantage, but long-legged rabbits easily escaped from predators, and as a result, they rapidly increased in number, and as a result, the small-legged population declined with the increase in long-legged rabbits.
Hence, the medium leg is stable and evolution is unlikely" is false. Hence, options A and D are the correct options for the statements.
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The question is incomplete, the complete question is the below,
Number with short legs (Generation 1 to 6) =23, 22, 20, 18, 15, 13
Number with medium legs (Generation 1 to 6) =97, 98, 95, 97, 96, 97
Number with long legs (Generation 1 to 6) =135, 155, 160, 163, 175, 180
A)The rabbits with medium length legs are the most stable and thus will out survive the others.
B) Medium length legs appears to be neither an advantage or disadvantage in the current environment.
C) The rabbits with longer legs have a selective advantage that allows them to survive and reproduce.
D) It is unlikely that evolution is occurring because none of the traits have
disappeared from the population.
E) A predator is the likely source of natural selection in this population as the rabbits with longer legs are more likely to escape compared with those with the shorter legs.