Answer:
Root hair cells are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption. They also contain lots of mitochondria , which release energy from glucose during respiration in order to provide the energy needed for active transport.
Explanation:
To maintain the concentration gradient and so the constant movement of water into the root hair cell by osmosis, the root hair cell actively transports mineral salts into the cell.
Root hairs are important because they absorb the majority of the water and nutrients required by the plant. The root hair cell actively transfers mineral salts into the cell to maintain the high ion concentration.
Root hairs, also known as absorbent hairs, are outgrowths of epidermal cells, which are specialized cells found at the root's tip.Root hairs are important because they absorb the majority of the water and nutrients required by the plant. In legume plants, they are also directly involved in the production of root nodules.The root hair cell actively transfers mineral salts into the cell to maintain the concentration gradient and hence the continual passage of water into the cell by osmosis.
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WHICH ONE IS IT??? AHHH
Answer:
b
Explanation:
Answer:
ecology? bc I don't think it's healthy or food chain
what does this imagine represent?
Answer:
it mean a transformation from young to old,down to up,low self esteem to hight esteem and week to strong
Answer:
monkey to human evolution or human evolution
Explanation:
what are 3 things u can say about group 1 elements?
what are 3 things you can say about group 17 elements ?
what are 3 things u can say about group 18 elements ?
pls hellppp!
Answer:
what are 3 things u can say about group 1 elements?
1. They are shiny soft metals
2. They are Very Reactive
3. When they are exposed to air, they tarnish due to oxidation
what are 3 things you can say about group 17 elements?
1. They all have an Ionic Charge.
2. They use ionization Energy by requiring one additional electron to form a full octet
3. They All Are non-metals.
what are 3 things u can say about group 18 elements?
1. They all are noble gases
2. They rarely combine with other elements
3. they are all odorless colorless monatomic gases with very low chemical reactivity
Explanation:
Which characteristic is true of sexual reproduction but not of asexual reproduction?
Answer:
sexual reproduction involves to organisms
Explanation:
What characteristic have helped humans survive major changes in the environment? the ability to adapt to new conditions the ability to outsmart predators the ability to run the ability to write and speak language
Answer:
Characteristics that have helped humans survive major changes in the environment are their brains and body. Human's social cooperation with tool making always increases.
Survival of the fittest explains the mechanism of natural selection. The ability to adapt to new changes has helped humans survive major changes in the environment.
What is adaptation?Adaptation is the ecological process that is the process of the adjustment of the structures, behaviors, and physiology of the organism to suit the altered environment.
It is the variation that increases the fitness of the organism so that it can survive and reproduce in a specific environment. It is a dynamic evolutionary method, that is essential for the sustainability of the organisms.
Therefore, option A. the ability to adapt to new conditions has helped humans survive.
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A diagram that shows how scientists think different groups of organisms are related _________________ ________________.
Answer:
isolation complete seperation
Explanation:
I get that right yo day in class
Why do individuals with recessive
traits show up with less frequency
in populations?
A. There are more dominant alleles in most
populations.
B. Individuals must inherit two copies of a
recessive allele to show the trait.
C. Recessive traits greatly outnumber dominant
traits in most populations.
The individuals with recessive traits show up with less frequency in populations because the individuals must inherit two copies of a recessive allele to show the trait.
What is an allele?"They are the alternative forms of a gene."
What is a recessive trait?It is a trait that is expressed only when the both alleles in the genotype are recessive.The genotype should be homozygous recessive for the trait to appear.What is a dominant trait?A dominant trait is a trait that is expressed even when one parent contributes the dominant allele.It is expressed when the genotype is heterozygous dominant or homozygous dominant.To learn more about recessive, dominant, and populations here,
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3. The sequence of nitrogenous bases is unique to each organism. The sequence of the
bases in DNA is most important for which of the following?
The processes of diffusion and active transport are both used to * break down molecules to release energy move molecules into or out of cells of the body bring molecules into cells when they are more concentrated outside of the cell move molecules against a concentration gradient, using ATP molecules
Answer:
move molecules into or out of cells of the body
Explanation:
Majorly, there are two types of transport used by living cells. These are; passive and active transport. Passive transport involves the movement of molecules down a concentration gradient without the need for energy (ATP) input. Example is DIFFUSION AND OSMOSIS.
On the other hand, active transport is a type of transport that moves molecules against a concentration gradient (low to high) with the aid of energy input (ATP). Example is sodium-pottasium proton pump.
Although there are obvious differences between these two processes (diffusion and active transport), but they both MOVE MOLECULES INTO OR OUT OF CELLS OF THE BODY.
The ovaries,cervix, uterus, fallopian tube, and vagina belong to the same.
a.cell
b.tissue
c.organ
d.organ system
Answer: organ system
Explanation: the all belong to the female reproductive system
6. How does Widder tell the difference between the species she observes in the deep ocean? Give an example of a species she identifies based on this observation.
Widder can identify different species by observing the differences in:
ColorShapeSizeAmong others.What is a specie?The word specie is used in biology to refer to a group of organisms that can reproduce consistently as they share the same taxonomy.
How can Widder identify different species?Identifying species is possible through multiple techniques that include:
Analyzing the genes of the organism.Identifying species based on observation.In the case of observation, which is a common technique. The best is to observe the physical characteristics of the organism that can make it different from other species. This includes observing:
Shape ColorSizeBehaviorAmong others.Note: This question is incomplete because there is no information about the species Widder is observing. Due to this, I answered it based on general knowledge.
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Answer: Edith Widder uses the bioluminescence (light) produced by the different sea creatures to identify their various species. For example, during her talk, she mentions a fish with a headlight behind its eye that retracted like a Lamborghini’s headlight. She also describes a Christmas tree fish where everything lights up, including the jewel-like organs in its body.
Explanation: This question comes from the TED talk "Glowing life in an underwater world" by Edith Widder. During her talk, she vividly describes her experience seeing sea organisms that display bioluminescence in the ocean.
Gamma globulin is a _____.
bacterium
treatment for measles
disease
virus
Answer: Gamma globulin is a disease.
Explanation: Hope this helps you :)
3. After learning about chemical reactions, Olivia investigated different
kinds of chemical changes using substances she found in her kitchen
so she could see these changes. Which of the following can occur when
a chemical reaction takes place? Choose the three statements that
apply.
Answer:
ABC
Explanation:
Lets say baking soda and vinegar when they react there is a chemical reaction where bonds break and from changing it into a new compound no longer just baking soda and vinegar.
A diagram of the DNA double helix is provided. The DNA components highlighted in the diagram can best be described how? They are -
PLS HELP I WILL GIVE BRAINLIST
If you are studying a gene within DNA and find out that guanine makes up 41% of it, how much is Adenine?
There are four bases found in DNA: adenine (A), cytosine (C), guanine (G), and thymine (T). Adenine forms a base pair with thymine, and cytosine forms a base pair with guanine. There is a one-to-one relationship in these base pairings (Chargaff’s rule), which means that if you know the percentage of any one of them within a given DNA sample, you can calculate the percentages of the other three. In this case, you're given the percentage of guanine, and you want to find out the percentage of adenine.
Since guanine base-pairs with cytosine and since there must be as much cytosine as there is guanine, 41% of the bases in this gene are cytosine as well. That means that adenine and thymine together make up the remaining 18% (100% − 41% G − 41% C) of the base pairs. If there must be an equivalence in the number of thymine and adenine bases per Chargaff's rule, then half of the remaining base pairs must comprise adenine and the other half comprise thymine. Half of 18% is 9%.
Thus, adenine makes up 9% of the bases in this gene.
where the photosynthesis occured
Answer:
In plants, photosynthesis takes place in chloroplasts.
Answer:
the chloroplast
Photosynthesis occurs in the chloroplast, an organelle specific to plant cells. The light reactions of photosynthesis occur in the thylakoid membranes of the chloroplast.
Explanation:
I hope this helps and pls mark me brainliest :)
Explain the mechanisms by which sex-linked
diseases are inherited.
Answer:
Sex-linked diseases are passed down through families through one of the X or Y chromosomes. X and Y are sex chromosomes. Dominant inheritance occurs when an abnormal gene from one parent causes disease, even though the matching gene from the other parent is normal. The abnormal gene dominates.
Answer:
Sex-linked diseases are passed down through families through one of the X or Y chromosomes. X and Y are sex chromosomes. Dominant inheritance occurs when an abnormal gene from one parent causes disease, even though the matching gene from the other parent is normal.
If mice with white coats are dominant to those with brown
coats, what is the genotype of a heterozygous mouse?
Explanation:
genotype will be Ww ( W for white dominate and w for brown ressecive.
Which temperature do you think is better for using water as a solvent and why?
Answer:
The hotter the water, the better the solvent
Explanation:
The higher, the better
Which of the following is not true about the rock layers?
Answer:
Layer C is older than layer F
Explanation:
They are the same age
Write one function of each of the following enymes
1) Pepsin( 2) Lipase
Answer:
the pepsin produces pepsinogen and the pepsinogen also peptides
what disease that cause the cell membrane to break
Answer:
Cystic fibrosis
Explanation:
cystic fibrosis is caused by a mutation i.e the cell membrane starts to separate
HELP PLS Using the picture below, which wave would have a higher pitch.
Answer:
may the above one i guess...i dont know
When a chemical change occurs, the identity of matter does not change.
True or False?
Answer:
true because matter can't dissapear or be created
Answer:
False
Explanation: Chemical changes are changes that occur when one substance is turned into another substance. The particles of one substance are rearranged to form a new substance.
A studenr wants to germinate seeds over the winter
Which two conditions does she need to provide for the seeds?
A.) Soil
B.) Moisture
C.) Feritilizer
D.) Warmth
Answer:
B and D
Explanation:
During the winter, soil does not go away, so A cannot be part of the answer. The only problems of doing this in the winter is no mostuire and its cold, so that will be needed.
Proof:
Took the Test, Correct
Look above for more verification
The two conditions that a student needs to provide for seed germination are moisture and warmth. Thus, the correct options are B and D.
What is Seed germination?Seed germination may be defined as the complete process of seed development into new plants. It emerges from a seed, the seedling, and finally into the adult plant.
In winter, there is extreme cold outside, so the excess cold reduces the moisture of the soil. Hence, it is needed to provide moisture as well as warmth for the seed to grow and develop properly under normal conditions.
Therefore, the correct options for this question are B and D.
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Over time the cartilage in your body is replaced by solid bone and is usually complete by the time you stop growing.
True
or
not?
4. What kind of functions can a plant cell perform that an animal cell cannot? Explain.
Answer:
Photosynthesis
Explanation:
Transcribe and translate the following DNA strand into an RNA strand: TACCA
GTAGATT
Answer:
Explanation:Key points:
Transcription is the first step in gene expression. It involves copying a gene's DNA sequence to make an RNA molecule.
Transcription is performed by enzymes called RNA polymerases, which link nucleotides to form an RNA strand (using a DNA strand as a template).
Transcription has three stages: initiation, elongation, and termination.
In eukaryotes, RNA molecules must be processed after transcription: they are spliced and have a 5' cap and poly-A tail put on their ends.
Transcription is controlled separately for each gene in your genome.
Introduction
Have you ever had to transcribe something? Maybe someone left a message on your voicemail, and you had to write it down on paper. Or maybe you took notes in class, then rewrote them neatly to help you review.
As these examples show, transcription is a process in which information is rewritten. Transcription is something we do in our everyday lives, and it's also something our cells must do, in a more specialized and narrowly defined way. In biology, transcription is the process of copying out the DNA sequence of a gene in the similar alphabet of RNA.
Overview of transcription
Transcription is the first step in gene expression, in which information from a gene is used to construct a functional product such as a protein. The goal of transcription is to make a RNA copy of a gene's DNA sequence. For a protein-coding gene, the RNA copy, or transcript, carries the information needed to build a polypeptide (protein or protein subunit). Eukaryotic transcripts need to go through some processing steps before translation into proteins.
In transcription, a region of DNA opens up. One strand, the template strand, serves as a template for synthesis of a complementary RNA transcript. The other strand, the coding strand, is identical to the RNA transcript in sequence, except that it has uracil (U) bases in place of thymine (T) bases.
Example:
Coding strand: 5'-ATGATCTCGTAA-3'
Template strand: 3'-TACTAGAGCATT-5'
RNA transcript: 5'-AUGAUCUCGUAA-3'
For a protein-coding gene, the RNA transcript contains the information needed to synthesize a polypeptide (protein or protein subunit) with a particular amino acid sequence. In this case:
RNA transcript (acting as messenger RNA): 5'-AUGAUCUCGUAA-3'
Polypeptide: Met-Ile-Ser-STOP
In transcription, a region of DNA opens up. One strand, the template strand, serves as a template for synthesis of a complementary RNA transcript. The other strand, the coding strand, is identical to the RNA transcript in sequence, except that it has uracil (U) bases in place of thymine (T) bases.
Example:
Coding strand: 5'-ATGATCTCGTAA-3' Template strand: 3'-TACTAGAGCATT-5' RNA transcript: 5'-AUGAUCUCGUAA-3'
For a protein-coding gene, the RNA transcript contains the information needed to synthesize a polypeptide (protein or protein subunit) with a particular amino acid sequence. In this case:
RNA transcript (acting as messenger RNA): 5'-AUGAUCUCGUAA-3' Polypeptide: Met-Ile-Ser-STOP
RNA polymerase
The main enzyme involved in transcription is RNA polymerase, which uses a single-stranded DNA template to synthesize a complementary strand of RNA. Specifically, RNA polymerase builds an RNA strand in the 5' to 3' direction, adding each new nucleotide to the 3' end of the strand.
RNA polymerase synthesizes an RNA strand complementary to a template DNA strand. It synthesizes the RNA strand in the 5' to 3' direction, while reading the template DNA strand in the 3' to 5' direction. The template DNA strand and RNA strand are antiparallel.
RNA transcript: 5'-UGGUAGU...-3' (dots indicate where nucleotides are still being added at 3' end)
DNA template: 3'-ACCATCAGTC-5'
RNA polymerase synthesizes an RNA strand complementary to a template DNA strand. It synthesizes the RNA strand in the 5' to 3' direction, while reading the template DNA strand in the 3' to 5' direction. The template DNA strand and RNA strand are antiparallel.
RNA transcript: 5'-UGGUAGU...-3' (dots indicate where nucleotides are still being added at 3' end) DNA template: 3'-ACCATCAGTC-5'
Stages of transcription
Transcription of a gene takes place in three stages: initiation, elongation, and termination. Here, we will briefly see how these steps happen in bacteria. You can learn more about the details of each stage (and about how eukaryotic transcription is different) in the stages of transcription article.
Initiation. RNA polymerase binds to a sequence of DNA called the promoter, found near the beginning of a gene. Each gene (or group of co-transcribed genes, in bacteria) has its own promoter. Once bound, RNA polymerase separates the DNA strands, providing the single-stranded template needed for transcription.
A major function of the human urinary bladder is
A) storing urine until it is eliminated
B) releasing urine directly into the bloodstream
C) transforming urine into a nitrogenous waste
D) filtering urine out of the blood
Answer:
A) storing urine until it is eliminated
Explanation:
CORRECT
What is the purpose of the anther and ovule?
Answer:
Anther: The part of the stamen where pollen is produced. Pistil: The ovule producing part of a flower. The ovary often supports a long style, topped by a stigma. The mature ovary is a fruit, and the mature ovule is a seed.
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