Answer:
The genetic code is degenerate and therefore mutations may go unnoticed.
Explanation:
Each triplet of nucleotide bases, which is known as a codon, encodes for a specific amino acid during translation. However, a single amino acid may be coded by different codons. It is for that reason that the genetic code is considered to be degenerate. In this case, Lysine amino acid can be encoded by both TTT (UUU in the mRNA) and TTC (UUC) codons, thereby a mutation T>C at the third nucleotide codon position does not affect the resulting protein (i.e., it is a silent mutation).
how do the rates of photosynthesis change with the physical environment?
Answer:
Without enough light, a plant cannot photosynthesis very quickly - even if there is plenty of water and carbon dioxide and a suitable temperature. Increasing the light intensity increases the rate of photosynthesis, until some other factor - a limiting factor - becomes in short supply.
Explanation:
what is the disciplines?
Discipline Means to Teach — Not to Punish or Control
Through discipline. ... Discipline shares the root with the word “disciple.” It means to teach or to guide. It does not mean to control or punish.
Based on everything you’ve read, which symptoms could indicate an eating disorder that might not be detectable by measuring BMI? What subjective and objective observations could you use to help detect other eating disorders in a clinical setting like the one described in this scenario?
Answer:
Detection requires awareness of risk factors for, and symptoms and signs of, anorexia nervosa (participation in activities valuing thinness, family history of an eating disorder, amenorrhea, lanugo hair) and bulimia nervosa (unsuccessful attempts at weight loss, history of childhood sexual abuse, family history of depression, erosion of tooth enamel from vomiting, parotid gland swelling, and gastroesophageal reflux). Providers must also remain alert for disordered eating in female athletes (the female athlete triad) and disordered eating in diabetics. Treatment requires a multidisciplinary team including a primary care practitioner, nutritionist, and mental health professional. The role of the primary care practitioner is to help determine the need for hospitalization and to manage medical complications (arrhythmias, refeeding syndrome, osteoporosis, and electrolyte abnormalities such as hypokalemia). Explanation:
A haversian canal is a(n)
Select one:
O A. fiber in dense bone
O B. meshwork in spongy bone
O C. depression on the surface of a bone
O D. channel in dense bone
Answer:
I think it's D
Explanation:
I found this as its definition "any of the minute tubes which form a network in bone and contain blood vessels."
When is genetic drift a major factor in evolution?
O A. When there is low gene flow
O B. When there is high selective pressure
O C. When there is sexual selection
O D. When there is female choice
Answer:look at pic
Explanation:
When there is high selective pressure is the major factor in evolution.
What is Genetic drift?Genetic drift is the arbitrary change in the population's frequency of a gene variant that already exists. Gene variations may totally vanish due to genetic drift, which would limit genetic diversity. Moreover, it can make previously uncommon alleles far more common and even fixed.
Genetic drift is an evolutionary process in which the frequency of a given gene allele varies randomly across a population.
The impacts of genetic drift can be severe, often causing traits to become excessively common or to vanish from a community, even though it predominantly affects small, isolated populations.
Therefore, When there is high selective pressure is the major factor in evolution.
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8. What factor contributes the most to the overall health and sustainability of an
ecosystem?
The Autonomic Nervous System can be challenging to understand because it is connected to virtually every body function in opposite ways. We are going to explore the physiology of the ANS in this discussion by looking at specific examples of how it works. For your first discussion post, describe how the parasympathetic nervous system influences one function in your body. For example, the parasympathetic nervous system causes decreased blood pressure. If you chose this body function, you would describe the physiology behind the decreased blood pressure. How does it happen? What occurs in the heart/blood vessels? Which scenarios or external factors would cause the parasympathetic nervous system to activate this response?
Answer:
The autonomic nervous system is the main function of our arterial cell function in our body.
Which segment(s) correspond(s) to the boiling point of the substance?
A
B
C
D
E
Answer:
it is the E because the boiling point of water is 100 degrees
Naomi’s allowance is $2.00 per week. If she convinces her parents to double her allowance each week for two months, what will her weekly allowance be at the end of the second month (week 8)?
Answer:
512
Explanation:
2x2 4x2 8x2 16x2 exc, exc
What are histones, and how are they arranged in nucleosomes? Drag the terms on the left to the appropriate blanks on the right to complete the sentences. Not all terms will be used.
a. lysine and arginine
b. histidine
c. five
d. four
e. eight
f. glycine and proline
g. two
h. one
Histones include_______ main classes of relatively small basic proteins containing relatively large amounts of_______ . Nucleosomes are made of________ each of_______ types of histones.
Answer:
1) c. five
2) a. lysine and arginine
3) g. two
4) d. four
Explanation:
A nucleotide can be defined as an organic molecule which forms the building block of nucleic acid such as deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).
Basically, nucleotide comprises of the following parts;
1. Nitrogenous base: this includes adenine (A), thymine (T), guanine (G), and cytosine (C) which are mainly found in the DNA while adenine (A), guanine (G), uracil (U) and cytosine (C) are found in the RNA.
2. A phosphate group.
3. A penrose sugar: it is either deoxyribose in DNA or ribose in RNA.
The two parts or chemical components of a nucleotide which do not change throughout the structure of DNA are;
I. Five-Carbon Sugar also known as deoxyribose and it has hydrogen on its second carbon.
II. Phosphate: this is the structural backbone that provides support to DNA.
Histones are a group of highly basic proteins that are mainly associated with deoxyribonucleic acid (DNA) in the nucleus of a living organism and then condense it to chromatin.
Histones include five main classes of relatively small basic proteins containing relatively large amounts of lysine and arginine. Nucleosomes are made of two each of four types of histones.
Write out the steps in the Central Dogma. List where each step occurs in the cell. For each arrow, name the process that the arrow represents and the primary enzyme (complex) respon- sible for completing that step. Name the step(s) in which mRNA, tRNA, and rRNA have a role and briefly describe the role of each in the step(s) you name.
Answer:
1. The Central Dogma refers to the molecular process by which the DNA is converted into proteins using RNA as intermediate, i.e., DNA (Transcription)-> RNA (Translation) -> Protein.
2. Localization:
Transcription: within the cell nucleus (in eukaryotic organisms)
Translation: cytoplasm
3. Enzymes :
Transcription: RNA polymerase
Translation: Peptidyl transferase
Explanation:
Transcription is the process by which a segment of DNA (called gene) is used as template to synthesize a messenger RNA (mRNA) by using a specific RNA polymerase enzyme. During translation, this mRNA travels from the cell nucleus to the ribosomes in the cytoplasm, where this sequence (mRNA) is used as template to synthesize a protein. The ribosomes are organelles composed of ribosomal RNA (rRNA) molecules which direct the catalytic steps of protein synthesis, while transference RNAs (tRNAs) are molecules that act as adaptors which link the mRNA template with the corresponding amino acids being incorporated into the protein. The enzyme peptidyl transferase catalyzes the formation of peptide bonds between adjacent amino acids.
List the four adaptation seen in Australopithecus afarensis fossils that enable biedalism.
Answer:
hope this helps
Explanation:
Bipedal modifications include "stacking" the bulk of the body weight on a small region near the center of gravity (i.e., the head is above the chest, which is above the pelvis, which is over the knees, which is above the feet).
How do chemical weathering affect land formation?
Answer:
Chemical weathering erodes the land/basically sort of melts the land away due to the pollution in the rain.
Explanation:
Answer:
Chemical weathering changes the molecular structure of rocks and soil. ... Sometimes, chemical weathering dissolves large portions of limestone or other rock on the surface of the Earth to form a landscape called karst. In these areas, the surface rock is pockmarked with holes, sinkholes, and caves.
Which is the site of protein synthesis?
A. nuclear pore
B. endoplasmic reticulum
C. chromatin
D. nucleolus
Answer:
b
Explanation:
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This list of terms BEST describes ?
A) hypothesis
B) law
C) Theory
D) variable
Answer:
the answer is
Explanation:
hypothesis
Even though the idea of recycling materials and using them in other ways seems like a good idea, why is the idea of using recycled tires at playgrounds a concern for some scientists?
edge2021
Answer:
The idea of using recycle tires at playgrounds is a concern for some scientists because they contain carcinogenic substances.
Explanation:
Recycle tires are in playgrounds as rubber mulch. This one is on the playground's floor to cushion the impact of any falls that kids may have while playing. The problem with this product is that, as they are old tires cut into little pieces, they still have the tires' toxins such as arsenic, benzene, cadmium, mercury, etc. Exposure to these toxins can cause cancer. This is why some scientists are concerned with this material in areas where kids are exposed to it since they are more vulnerable to carcinogens than adults.
Why is a pasture-type system is
more labor intensive than
controlled systems?
A. There is greater maintenance of the
equipment.
B. There is greater need to handle diseases.
C. There is greater area to cover to observe and
manage the animals.
D. There is greater cost of feed per animal.
Answer:
The correct option is C.
There is greater area to cover to observe and
manage the animals.
Explanation:
This is because pasture type system refers to a large area of land where grasses are grown and animals are allow to graze the area of land to obtained nutrients. In this system there is large area of land where animals are well observed while feeding in order to prevent the risk of loss and attacks.
Could someone help me answer this? will mark brainliest
Answer:
Mandel had performed simple experiments by using pea plants having definite traits of opposite expression as Tall or Dwarf, Round seed
Explanation:
What are some Non-examples of a Fossil record?
Answer:
Explanation:
A fossil record is a group of fossils which has been analyzed and arranged chronologically and in taxonomic order. Fossils are created when organisms die, are incased in dirt and rock, and are slowly replaced by minerals over time. What is left is a mineral impression of an animal which once existed. Many fields and specialties are utilized to categorize and arrange these fossils, including comparative anatomy, radiometric dating, and DNA analysis. Using the data from the fossil record, scientist try to recreate phylogenies, or trees describing the relationships between animals, both alive and extinct. The fossil record helps inform how different groups of animals are related through evolution.
Answer:
Fossils are the geologically altered remains of a once-living organism and/or its behaviour. There are two main types: body fossils represent all or part of the organism’s body, and trace fossils show evidence of the organism’s behaviour. The study of fossils is called paleontology, from the Greek meaning ‘ancient (paleo-) being (onto-) study (-logy)’. Scientists who study fossils are called paleontologists. Fossils are of particular interest to geologists as they can help determine the age of a particular rock compared to other rocks, or identify the environment in which the rock was formed.
Choose the true statement about prokaryotic and eukaryotic DNA replication. View Available Hint(s) Choose the true statement about prokaryotic and eukaryotic DNA replication. Eukaryotic DNA replication involves less protein factors than does prokaryotic DNA replication. Eukaryotic DNA replication begins at multiple origins of replication, while prokaryotic DNA replication begins at a single origin of replication. Prokaryotic genomes take longer to replicate than eukaryotic genomes. Prokaryotic DNA polymerases replicate DNA 5' to 3', while eukaryotic DNA polymerases replicate DNA 3' to 5'.
Answer:
The correct answer is - Eukaryotic DNA replication begins at multiple origins of replication, while prokaryotic DNA replication begins at a single origin of replication.
Explanation:
There are several differences in the prokaryotic and eukaryotic DNA replication as it takes place in the cytoplasm in prokaryotes whereas it occurs in the nucleus in the eukaryotes. The other difference is that it is a continuous process in prokaryotes but it occurs during the S phase only in eukaryotes.
In prokaryotes, the DNA replication begins at a single origin of replication in both directions and in eukaryotes, DNA replication starts at multiple origins of replication.
Which of the following is not a chemical reaction that decomposes rock
O oxidation
O hydrolysis
O carbonation
O replacement
Answer:
replacement
Explanation:
I hope its helps you
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What is most likely to happen if oxygen is not able to enter a cell
Answer:
When Oxygen is not available, the cell is forced to produce energy (=ATP) through ANAEROBIC processes, that produce much less energy (about 15 times less), than AEROBIC processes. Oxygen is essential for the functioning of the electron transport chain.
Explanation:
What is the main factor that causes bedrock to weather at different rates?
1. Elevation above sea level
2. Mineral composition
3. Age of rock layers
4. Environmental factors
Answer:
2. Mineral composition
Explanation:
Weathering can be defined as the physical and chemical breakdown of rock into smaller pieces called sediment. Weathering can be classified into two categories namely;
I. Physical weathering : it is the process of breaking rocks into pieces without affecting its chemical composition e.g temperature, abrasion and frost action.
II. Chemical weathering : it is the process of breaking rocks into pieces by chemical action which leads to changes in its chemical composition e.g carbonation, hydration, plant acid and oxidation.
Minerals is any form of naturally occurring, inorganic solid substance characterized by a crystal structure. Also, minerals are homogeneous in nature with a defined chemical composition and characterized by a crystal structure comprising of ions, atoms, or molecules in an orderly arrangement.
Hence, mineral composition is the main factor that causes bedrock to weather at different rates.
Organelles within a cell interact as a system to maintain homeostasis. The destruction of which of the following organelles would cause the MOST damage to the cytoplasm of a cell? А. ribosome b. chloroplast c. cell membrane D. Golgi apparatus
Answer:
cell membrane
Explanation:
cuz
The destruction of the organelle known as cell membrane would cause the
most damage to the cytoplasm of a cell.
The cell membrane is a covering in cells which help to protect the
cytoplasm .The cytoplasm contains most of the organelles such as
lysosomes, ribosomes etc.
The cell membrane also controls the substances which enters and leaves
the cell and destroying it will lead to attack on the cells from other
organisms or a higher concentration which may lead to shrinking and death.
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Please help! Cells inside the body work to keep the dog's temperature stable. True or False?
Answer:
False!
Explanation:
Regulation of the temperature in any body is mostly done by the nervous system. But if a dog wants to maintain homeostasis they will pant as a way to cool off. This physical behavior is their way for regulating their internal temperature, which keeps them from overheating
1. Which weather variable can be determined by using a psychrometer?
Answer:
atmospheric humidity.
Explanation:
used to measure the amount of water vapor in air, in soil, or in confined spaces. Humidity measurement instruments usually rely on measurements of some other quantities such as temperature, pressure, mass, a mechanical or electrical change in a substance as moisture is absorbed.
Carbon dioxide from living things is also returned to teh atmosphere through processes of ____ of dead tissue
OA decomposition
OB combustion
OC photosynthesis
OD respiration
Answer:
carbon dioxide from living beings is also returned to the atmosphere through processes of respiration of dead tissue.
The answer is (c) respiration
Carbon dioxide from living things is also returned to the atmosphere through processes of decomposition of dead tissue.
What is Decomposition?This is the process in which dead organisms are broken down into simpler substances and releases compounds such as carbon dioxide, water etc.
Decomposition is however the most appropriate choice which is why option A was chosen.
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28. What substance is a liquid at 4000 °C?
carbon
phosphorus
xenon
arsenic
nitrogen
Answer:
its carbon............
Answer:
Against the wall and the other side and rear bumpers to be a great...
Which picture best shows how a plant grows in response to sunlight?
Answer:
i think its a
Explanation:
my mom has a lot of plants and they look like the top one
Which cell structure plays a direct role in the release of chemicals from the cell?
Answer:
The correct answer is - the cell membrane.
Explanation:
When a human cell gets an external stimulus it triggers the production of the specific compound or chemical release which is packed in vesicles from the endoplasmic reticulum and Golgi apparatus to the cell membrane. The cell membrane is the cell organelle that allows or prohibits the entry or exit of any substance.
Chemical release or secretion also depends on the cell membrane and it allows the secretion of chemicals and plays an important role in the secretion of chemical, hormones, or any substance.
Cell membrane is an structure that plays a direct role in the release of chemicals from the cell.
The cell membrane is the wall that cells have, allowing them to remain independent from the external environment.
The membrane has receptors, which are molecules or sets of molecules, capable of recognizing and responding to signals from the extracellular medium, carrying specific information.
When these signals reach the plasma membrane, internal signals are triggered in the cell, both activating and inhibiting different cellular processes and the release of chemicals.
As an example of these external signals we can cite the release of chemicals such as hormones, for example insulin, which increases the synthesis of glycogen.
Therefore, we can conclude that cell membrane is an structure that plays a direct role in the release of chemicals from the cell.
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