Biology High School
Answers
Answer 1
Answer:
The answer is: Folded, fault block, volcanic.
Explanation:
The main types of mountains are: Folded, fault block, volcanic and upwarped.
Folded mountains. These types of mountains tend to change constantly depending on their complexity, however they always conform to the basic type.
Volcanic mountains. It is about the mountains that come to form when a volcano erupts.
Domes. These mountains are created by domed strata, as a granitic intrusion is generated.
Mountains in block. These are large-scale structural failures. These inside are usually folded and tend to have failures.
Plateau mountains. These are created when there is activity in the deepest of the earth's crust. They are formed with the deep channels that the current water produces, where the rivers can cut any table regardless of their depth, thus producing high-rise mountains.
The answer is: Folded, fault block, volcanic.
Related Questions
What do you think can be done to prevent some of the viral infections in birds? What actions do veterinarians and caretakers need to take to protect birds from these infections?
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Explanation:
people need to avoid wild birds & wash their hands , avoid contact with contaminated surfaces
How many more trees are there in Canada than florida?
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The difference is over a trillion, what could you possibly need this information for?
Desmosomes connects keratinocytes to each other. Why is this important?
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Answer:
Desmosomes as structured are two adjacent attached cells formed in the cell membranes from protein plaques while connected by filaments. The function of separating an organism from its environment is performed by epithelial keratinocytes.
To protect the organism, the keratinocytes are connected by the desmosome filaments through adherence. The adhered keratinocyte / desmosome connection produces prekeratin, a fibrous protein that adds to the epidermis a soluble structure
Analyze, evaluate, and critique. The human genome consists of coding and noncoding DNA. Research and summarize current investigations into the functions of noncoding DNA.
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Answer:
Explanation:
Nowadays, it is known that approximately 1% of human DNA are protein-coding genes. The other 99% are non-coding DNA. Non-coding DNA genes do not produce proteins. Non-coding DNA consists of certain sequences of vital function to the cells. The main purpose of non-coding DNA is gene activity. A large number of non-coding DNA have a role as regulatory elements. It has the function to inhibit and stimulate certain gene activity and further protein production (transcription factors). Transcription factors bind and/or activate or suppress the process of protein production (transcription). Non-coding DNA is involved in the cutting and splicing of large amounts of DNA. Further, they are involved in transposon reassembly, genome rearrangements and the production of small RNAs.
Non-coding DNA consists of promoters, enhancers, silencers and insulators. Promoters allow binding sites for the proteins. In this way, the transcription is performed. Enhancers provide binding sites for proteins to start the transcription process. They are most commonly placed either before or after the gene they control. Silencers provide binding sites for proteins that inhibit transcription. Insulators provide binding sites for proteins that regulate transcription. They may even block enhancers (enhancer-blocker insulators). The other prevent structural changes in the DNA strand (barrier insulators).
Non-coding DNA may produce specialized RNA molecules such as transfer RNA (tRNAs) and ribosomal RNA (rRNAs), micro RNA (miRNAs). rRNAs and tRNAs aid in organizing protein building blocks (amino acids) into a chain named protein. miRNAs block the process of protein production. Long non-coding RNA (IncRNAs) have diverse functions in gene regulation.
Introns are also non-coding DNA. They are sequences between the exons. Intron messages are spliced by the spliceosome for the production of the coding RNAs ( mRNA, rRNA and tRNA).
Which two conditions are required for cloud formation? A) high humidity and warm temperatures. B) high humidity and cool temperatures. C) warm temperatures and the presence of particles. D) cool temperatures and the presence of particles.
Answers
The answer is C because when clouds form they need a high humidity and cool temperatures
Answer:B
Explanation:
There must be three main ingredients present in order for clouds to form: Moisture - There must be sufficient water vapor in the air to build a cloud. Cooling air - The air temperature must decrease enough for water vapor to condense.
Which of the following BEST describes the characteristics and function of SIRNA? A a short strand of RNA that can complement and inactivate a sequence of mRNA
B. a short strand of RNA that can act as a transcription factor to initiate transcription
C a strand of DNA that can bind to and inactivate an mRNA sequence
D. a tRNA that is not able to attach to a ribosome and therefore inhibits the process of translation
Answers
A a short strand of RNA that can complement and inactivate a sequence of mRNA
Answer: Option A
Explanation:
siRNA stands for small interfering RNA which has a set double-stranded RNA molecule. It is also called as silencing RNA or short interfering RNA. mRNA is a messenger molecule in the siRNA.
siRNA integrates into a protein complex known as RISC that tells the siRNA to target the RNA sequence. Then its double strands unwind into a short strand in that protein complex and remain bound to it.
It then directed by the RISC either to complement ( enhance) the mRNA molecule sequence or to degrade (inactivate) the mRNA molecule sequence.
Answer:
A. a short strand of RNA that can complement and inactivate a sequence of mRNA
Explanation:
Just wanted to confirm. The explanation above me is correct.
A researcher has identified a mutant strain of yeast whose histones are unable to be acetylated. Which of the following is the MOST reasonable prediction for how the phenotype of this mutant yeast will differ from
the phenotype of yeast cells with acetylated histones?
o
A. The mutant will grow more rapidly
B. The mutant will grow much more slowly.
The mutant will show decrease d levels of gene express
D. The mutant will show increased levels of gene expression
Answers
Answer:
The correct answer is c the mutant will show decreased levels of gene expression.
Explanation:
Histone acetyl transferase is an enzyme that helps in the transfer of acetyl group to the epsilon -NH2 group of lysine reside of histone proteins that surrounds the DNA molecule of chromosome.
This results to make the target DNA more assecible for transcription mediated by RNA polymerase resulting the gene expression.
On the other hand the mutant in which histones are not acetylated,transcription rate decreases as the non acetylated DNA is less assecible to RNA polymerase.
Answer:
C. The mutant will show decreased levels of gene expression.
Explanation:
Just wanted to confirm. The explanation above me is correct.
Which of the following environmental conditions would be MOST likely to result in transcription of the lac operon in an E. coli cell?
A
low levels of lactose and high levels of glucose
B high levels of lactose and high levels of cyclic AMP
C
ow levels of lactose and low levels of cyclic AMP
D
high levels of lactose and high levels of glucose
Answers
Answer:
The correct answer is B high levels of lactose and high levels of cyclic AMP.
Explanation:
Lac operon contain 3 regulatory genes and 3 structural genes.In presence of lactose the repressor molecule that is encoded by Lac I gene cannot bound to the operator region.
Bacause the lactose interact with the repressor and change its conformation so that it cannot repress the expression of the structural genes of lac operon.
On the other hand cyclic AMP is a positive regulator of lac operon .The interaction of cyclic AMP with the promoter region of lac operon stimulates the binding of RNA polymerase in the promoter region to boost the expression of structural genes of lac operon such as Lac Z,Lac Y and Lac A.
Answer:
B. high levels of lactose and high levels of cyclic AMP
Explanation:
Just wanted to confirm. The explanation above me is correct.
What must be true for a male individual to be a carrier of a Y-linked recessive allele? A. The gene has no other alleles.
B. The gene is only expressed in females.
c The gene is silenced on the Y chromosome.
D. The gene is also found on the X chromosome.
Answers
The genotype of chromosomes classified the humans as males and females. The females have XX chromosomes, whereas the males have XY chromosomes.
The male individual can be the carrier for a Y-linked recessive allele only when the gene on the Y chromosome is silenced.
The Y-linked recessive allele is:
- Y-linked diseases such as webbed toes, porcupine man, and hypertrichosis are the diseases of the Y-linked recessive allele.
- The Y-chromosome does not have the same genetic makeup as an X-chromosome. The women cannot be a carrier for a Y-linked disease as the women have purebred XX chromosomes.
- Thus, the male can only be a carrier when the gene on Y-chromosome is silenced.
Therefore, the correct answer is Option C.
To know more about the chromosomal disease, refer to the following link:
brainly.com/question/1230146
Answer:
c The gene is silenced on the Y chromosome.
What is the complementary strand of DNA 5’-CACTTA-3’
Answers
Answer:
3'-GTGAAT-5'
Explanation:
Which human activity would most likely have a positive impact on the environment? Using pesticides to decrease populations of birds of prey Increasing emissions into the atmosphere to decrease the pH of lakes Using parasites for biological control of pests to increase crop yields Engaging in uncontrolled hunting and trapping to reduce populations of carnivores
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Answer:
The correct option is 'Using parasites for biological control of pests to increase crop yields.'
Explanation:
Using The method of biological control for killing pests is better than using a chemical control. Chemical controls such as pesticides can lead to the pests developing resistant genes against the pesticides. As a result, the pesticides will no longer be useful for killing pests. Hence, killing of pest through biological controls is a better method. For example, the usage of parasites for killing a certain kind of pest. This will increase the crop yield.
If corn #1 comes from a parental generation composed of homozygous purple kernels and homozygous yellow kernels then, the monohybrid cross will produce a generation that is heterozygous color purple dominant. If generation 1 is crossed with generation 1again, then the result will be dominant for the purple trait ¾ to ¼ in F2 generation. If corn # 2 comes from a parental generation composed of purely homozygous purple and smooth kernels and purely homozygous yellow and wrinkled kernels then a cross of the parental generation will cause alleles to segregate during gamete formation. The F1 generation will be heterozygous for both traits of color and texture. F1 crossed with itself will result in an F2 generation with mostly purple smooth kernels, some purple wrinkled, some yellow smooth and some yellow wrinkled.
Answers
Answer:
For corn#1 the punnet square can be shown as follows
p p
P Pp Pp
P Pp Pp
P p
P PP Pp
p Pp pp
The results from Corn # 1 and corn No #2 show that alleles assort independently into gametes. Due to this genetic variations occur.
Homozygous means that the alleles for a gene are similar. Heterozygous means that the alleles for a gene are different.
A dominant trait is the one in which the dominant allele suppresses the effect of the recessive allele. The recessive allele gets masked by the dominant allele.
Relate restriction enzymes to recombinant DNA
Answers
Answer:
Read the explanation section.
Explanation:
Restriction enzymes basically used in genetic engineering. Particularly in recombinant DNA technology. Restriction enzymes have two properties, which are very much useful in recombinant DNA technology.
First, they cut DNA into fragments or small pieces. This cutting is done to make the size of the DNA into a suitable one for cloning purposes.
Second, many restriction enzymes make staggered cuts that create single-stranded glutinous ends. These ends are favorable to the formation of recombinant DNA.
Ah! I smell cookies baking! I cannot wait to taste them: warm and sweet! Smell and taste are closely related senses. Identify the one statement that does not describe these two senses. A) If an organism does not have a receptor for a particular odor molecule, for that organism, the odor has no smell. B) Both smell and taste use chemoreceptors, which means they are both sensing the chemical environment. C) If one’s sense of smell is not functional, then the sense of taste will also not function. D) The senses of smell and taste combine at the back of the nasal passage
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Answer:The answer to this question is D: The senses of smell and taste combine at the back of the nasal passage.
C) if ones sense of smell is not functional, then the sense of taste will also not function.
You can even prove this right now, close your nostrils shut with your fingers and eat something. You won’t taste anything.
Describe the polymerase chain reaction using an analogy
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Answer:
Polymerase chain reaction (PCR) is a common laboratory technique used to make many copies (millions or billions!) of a particular region of DNA. This DNA region can be anything the experimenter is interested in. For example, it might be a gene whose function a researcher wants to understand, or a genetic marker used by forensic scientists to match crime scene DNA with suspects.
Explanation:
i hope this answers your question
Generalize how restriction enzymes are used
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Answer: for cutting DNA sequences
How does the structure of DNA determine the structure of proteins?
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Answer: Sequence of Amino acids
Explanation: The shape of a protein is determined by its primary structure (sequence of amino acids). The sequence of amino acids in a protein is determined by the sequence of nucleotides in the gene (DNA) encoding it.
How does the structure of DNA determine the structure of proteins?
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Answer:
the shape of protein is determined by its primary structure , amino acids . The sequence of amino acids in a protein is determined by the sequence of nucleotides
Sammi is studying the interaction of the digestive and circulatory systems in the human body. She has listed various processes that occur in each of the systems. Put the processes in order to describe the interaction between these two systems. Tiles Blood is pumped through the circulatory system to deliver nutrients to other organs.Digestive processes break nutrients down in the mouth, stomach, and small intestine.Nutrients are ingested at the mouth.Nutrients enter the capillaries of the circulatory system.Nutrients diffuse through the villi of the small intestine. Sequence → → → → Question 2
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Answer:
The order of the processes that describe the interaction between the digestive and circulatory systems in the human body ;
Nutrients are ingested at the mouth. Digestive processes break nutrients down in the mouth, stomach, and small intestine. Nutrients diffuse through the villi of the small intestine. Nutrients enter the capillaries of the circulatory system. Blood is pumped through the circulatory system to deliver nutrients to other organs.
Explanation:
The food we eat contains essential nutrients that are important to the proper functioning of our body. The human digestive system which starts at the mouth mainly consists of tongue, teeth, salivary glands, epiglottis, esophagus, stomach, pancreas, liver, gallbladder, small intestine, large intestine and ends at the anus. In the mouth, the ingested food is mixed with saliva and chewed using teeth with the help of tongue. The process of digestion starts when the enzymes in the saliva start to break down the food in the mouth. This food is then swallowed down through esophagus and passed into the stomach. During swallowing, epiglottis prevents the food from entering in to the lungs. The stomach contains gastric acid which mixes with the food and broke it down into smaller components. It is then passed into the small intestine where most of the digestion takes place. In the small intestine, the food is again broken down into smaller molecules by the use of bile ( produced by liver ) stored in the gall bladder and various enzymes produced by pancreas. The inner wall ( mucosa ) of the small intestine is lined with epithelial tissues which have finger-like projections called villi, which contains a network of capillaries and lymphatic vessels (lacteals). Nutrients are then transported to these capillaries and lymphatic vessels from the epithelial cells of the villi by a process called diffusion. The folded structure of the villi increase the surface area available for the nutrient absorption. This blood is pumped through the circulatory system to deliver the essential nutrients to other organs. The undigested and unabsorbed food passes into the large intestine where water and some minerals are reabsorbed back into the blood . The waste products of digestion in the large intestine are eliminated through the anus.
Correct Sequence In Order:
1. Nutrients are ingested at the mouth.
2. Digestive processes break nutrients down in the mouth, stomach, and small intestine.
3. Nutrients diffuse through the villi of the small intestine.
4. Nutrients enter the capillaries of the circulatory system.
5. Blood is pumped through the circulatory system to deliver nutrients to other organs.
How is the position of chromosomes different in metaphase and telophase? a In metaphase, the chromosomes are at the spindle equator, but in telophase they are at the poles of the spindle.
b In metaphase, the chromosomes are at the poles of the spindle, but in telophase they are at the spindle equator.
c. In metaphase, the chromosomes are moving freely in the nucleus, but in telophase they are being pulled to opposite ends of the spindle.
d. In metaphase, the chromosomes are being pulled to opposite ends of the spindle, but in telophase they are moving freely in the nucleus.
Answers
Answer:
A) In metaphase, the chromosomes are at the spindle equator, but in telophase they are at the poles of the spindle
Explanation:
Cellular division, whether meiosis or mitosis, comprises of different stages starting from Prophase till Cytokinesis. Metaphase is the second stage of the M phase while Telophase is the last stage in M phase just before the cell cytoplasm divides in cytokinesis.
In the Metaphase stage, the already condensed chromosomes are attached to by spindle microtubules, in order to align them at the center or equator of the cell, called METAPHASE PLATE.
During the telophase stage, the chromosomes on either pole begins to undergo reverse changes of what occurred in prophase e.g chromosomes re-condense etc.
The main distinguishing factor between these two phases is that, In metaphase, the chromosomes are aligned at the equator while in telophase, the chromosomes are already at each poles of the spindle, post-anaphase.
A.
When you hear Metaphase think ‘middle phase’