Answer:
a. True
Explanation:
The genome can be defined as the complete set of genetic information of an organism which is responsible to produce all the biological components required to carry out its metabolic functions (i.e., development, growth, reproduction, etc). These genes are transcriptionally expressed to produce mRNAs which are subsequently used to synthesize specific proteins (i.e., enzymes and structural proteins) by the process of translation. All organisms (i.e., either unicellular or multicellular organisms) exhibit specific gene expression programs by which such genes are regulated over time. Within the cell, gene regulation is essential to carry out biological processes ranging from development and differentiation to cell cycle arrest. These gene expression programs are acutely regulated via genetic (e.g., transcription factor binding) and epigenetic (e.g., DNA methylation) mechanisms, which work together in order to turn on/off genes during development.
An animal that forms a social attachment to its mother shortly after birth demonstrates which learned behavior?
a.
Insight
c.
Imprinting
b.
Habituation
d.
Trial-and-error
Which of the following descriptions correctly defines gametes
Skin cells
Sex sales or sperm and egg cells
The diploid cell that comes from the fertilization of an egg cell by sperm cells
All of the above
Answer:
Sex sales or sperm and egg cells
Explanation:
Which of the following mutations could lead to constitutive expression of the genes of the lac operon? View Available Hint(s) Which of the following mutations could lead to constitutive expression of the genes of the lac operon? A mutation in the lac-Z gene A mutation in the lac-Y gene A mutation in the operator sequence A super repressor mutation Submit Part B Which of the following best describes the biological role of the lac operon? View Available Hint(s) Which of the following best describes the biological role of the lac operon? It ensures that bacterial cells produce lactose only when no other food sources are available. It ensures that a cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment. It ensures that a cell produces enzymes involved in lactose metabolism in a constitutive manner. It prevents other sugars from being metabolized until all available lactose has been used. Submit Part C The placement of the operator sequence between the promotor and the structural genes is critical to the proper function of the lac operon. View Available Hint(s) The placement of the operator sequence between the promotor and the structural genes is critical to the proper function of the lac operon. True False
Options for part A are as follows:
A) A mutation in the operator sequence
B) A mutation in the lac-Z gene
C) A mutation in the lac-Y gene
D) A super repressor mutation
Answer:
The correct answer:
Part a - A mutation in the operator sequence
Part b - It ensures that a cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment
Part C. true.
Explanation:
part a:
If there is a mutation in the operator sequence leads to prevent binding of the repressor which leads to allowing constitutive expression of the genes various conditions.
part b:
The biological role of the lac operon makes sure that the cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment
Part c:
RNA polymerase cannot transcribe the structural genes due to the repressor binds to the lac operator, therefore, the proper function of the lac operon is possible when the placement of the operator sequence between the promotor and the structural genes.
What does the field of proteomics study? The structure and function of cellular lipids and how they interact to contribute to traits. The structure of carbohydrates and how they are converted into a useable form of energy for the body. The interaction between cellular proteins and how they make up the bulk of the cell membrane. The structure and function of cellular proteins and how they interact to contribute to traits. The structure of prions and how they can lead to various diseases within the body.
Answer:
The structure and function of cellular proteins and how they interact to contribute to traits.
Explanation:
Proteomics is a research area that studies proteomes and their interactions with other cellular components (e.g., transcription factors involved in DNA-protein interactions, ribonucleoprotein complexes involved in RNA-protein interactions, etc). A proteome can be defined as the entire set of proteins synthesized by an organism. The proteomics field allowed us to identify common protein functions (structural and enzymatic functions), as well as understand how protein expression (which is regulated by genetic and environmental factors) influences cellular metabolic activities (e.g., iron uptake).
A group of students decide to have a fishbowl in their classroom. They put the following things in it:
Seaweed that grows on the bottom.
Fish that eat the seaweed.
Bacteria that eat the waste created by the fish.
In this ecosystem, what are the bacteria?
How are spring tides different from Neap Tides. Give at least 2 reasons _______
Answer:
Seven days after a spring tide, the sun and moon are at right angles to each other. This produces moderate tides known as neap tides, meaning that high tides are a little lower and low tides are a little higher than average. Neap tides occur during the first and third quarter moon, when the moon appears "half full.
the cytoplasmic extensions that, together with the cell body, provide the main receptive surfaces for neurons are the:
a: axons
b: soma
c: dendrites
d: synapses
Match the statements on the left to the choices on the right.
Increase transcription of a gene. [ Choose ]
DNA binding protein [ Choose ]
Block the promoter region of a gene. [ Choose ]
Found associated with the gene encoding HCl production in a skin cell. [ Choose ]
Found associated with the genes encoding hemoglobin in a red blood cell [ Choose ]
Answer:
Increase transcription of a gene - Activator
DNA binding protein - Ribosome
Block the promoter region of a gene - Repressor
Found associated with the gene encoding HCI production in a skin cell - mRNA
Found associated with the genes encoding hemoglobin in a red blood cell - mRNA
Explanation:
Hemoglobin is an iron containing compound present in red blood cells which carries oxygen in the body. mRNA molecule contains exon coding for two proteins. mRNA molecule becomes associated with four to six ribosomes.
The statements on the left are correctly matched with the choices given on the right are:
Increase the transcription of a gene -------- Activator.DNA binding protein ------ Ribosome, Polymerases.Block the promoter region of a gene ------ Repressor. Found associated with the gene encoding HCl production in a skin cell -------- mRNAs.Found associated with the genes encoding hemoglobin in a red blood cell -------- mRNAs.What do you mean by a Gene?
A gene is a basic unit of heredity and a sequence of nucleotides in DNA that encodes the synthesis of a gene product, either RNA or protein.
An activator is known to increase the transcription of a gene, while a repressor binds to the promoter region and inhibits the transcription process. The molecules of mRNA get associated with the gene HBA, HBB which encodes for hemoglobin in red blood cells. Ribosomes and polymerases are known for DNA binding protein.
Therefore, above are all the statements on the left that are correctly matched with the choices given on the right.
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Which specific subdivision of the nervous system calms the body after strenuous physical activity?
O A. autonomic nervous system
O B. somatic nervous system
OC. parasympathetic nervous system
CO D. sympathetic nervous system
Answer:
C. Parasympathetic nervous system.
Explanation:
The parasympathetic nervous system calms the body after strenuous physical activity.
Hope this helps!
explain the importance of capacity to living organisms
What year did the first "Earth Day" occur?
Please help
Answer:
April 22, 1970 was the 1st earth day
Answer:
in spring 1970
Explanation:
because of this one person named Gaylord Nelson
What are are used to build enzymes
Answer:
they are made from amino acids
which two places is aggregate generally found?
floodplains and alluvial fans
alluvial fans and mines
mines and beneath the topsoil
beneath the topsoil and above the topsoil
Answer: Floodplains and Alluvial Fans
Explanation: Took the quiz and got it right. Hope this helps!
Answer:person above is right
Explanation:
answer A
What do memory B and T cells do when they encounter a pathogen for the second time?
Answer: When B cells and T cells are first activated by a pathogen, memory B-cells and T- cells develop.
Throughout the lifetime of an animal these memory cells will “remember” each specific pathogen encountered, and are able to mount a strong response if the pathogen is detected again. This type of immunity is both active and adaptive.
Active immunity often involves both the cell-mediated and humoral aspects of immunity as well as input from the innate immune system.
Explanation: Hope it Helps
Help me please!!!!!!!!!!!!!!!!!?
Answer:
points .,.
thx .,. Explanation:
24. all of the following are function of sER Except ?
A. Synthesis of lipid
B. Carbohydrate Metabolism
C. Detoxification of drug and poisons
D. Modification of protein
Answer:
D
Explanation:
The organelle that modifies proteins is the golgi body.
What effect does planting trees and bushes on a steep hill have?
A- It makes the hill a good habitat for animals.
B- It provides oxygen to the soil.
C- Over time, it will help the hill grow taller.
D- It helps stop erosion.
Answer:
D- It helps stop erosion.
Explanation:
Erosion can be defined as a geological process which typically involves the wearing out of earthen (soil) materials and the transportation of these materials by natural forces like water, wind, etc. Soil erosion is greatest when the soil is steep.
The steepness of a body such as river or stream refers to the downward slope or gradient of the body of water.
Generally, the steepness of a body affects the rate at which other materials would flow or move around. Thus, the steeper a river or stream, the greater would be its rate of erosion. Other factors that affect the rate of erosion in an area include the following; farm management, rainfall, climate, soil type, soil cover, landscape, type of wave, crops, rock strength and position of coast.
In order to mitigate or stop the rate of erosion in an environment, trees and bushes should be planted on a steep hill because they will obstruct the free flow of water, as well as absorbing it.
IF A RED BIRD EATS IN A SPACE OF 500 FT AND A BLUE BIRD HUNTS WITHIN THIS 500 FT, BUT ONLY IN A SQUARE OF 100FT, WHAT MIGHT HAPPEN TO THE BLUE BIRDS POPULATION. IF THE RED BIRD EATS THE BERRIES IN THE 100FT SPACE.
Answer: They will die
Explanation: they will have no food to eat to keep them alive
Compare and contrast disorganized schizophrenia and paranoid schizophrenia.
Answer:
The paranoid subtype is characterized by the presence of hallucinations and delusions. In the disorganized one appears a behavioral disorganization and of the thought and language as well as an inappropriate affect. These patients tend to have an earlier onset, a worse prognosis, and a greater number of neurocognitive alterations.
Explanation:
Paranoid schizophrenics are characterized by sharp delusions, especially persecution ideas of grandeur, often with a corresponding aggressive reaction in response to the alleged persecution. There may be hallucinations of various kinds, to which patients react consecutively, but later, as deterioration occurs, apathy and indifference appear. Hallucinations are common. On the other hand, disorganized schizophrenia is another form of schizophrenia that is characterized by disorganization of speech, that is, the language is rambling and incoherent, the behavior is unpredictable, inappropriate and incongruous.
Answer:
The paranoid subtype is characterized by the presence of hallucinations and delusions. In the disorganized one appears a behavioral disorganization and of the thought and language as well as an inappropriate affect. These patients tend to have an earlier onset, a worse prognosis, and a greater number of neurocognitive alterations.
Explanation:
answer credit: genewho
What is a frog's habitat?
R. the flies that it eats
S. the green skin coloration
T. a forest pond
V. the total number of frogs in the area
Mutations that change the bases in a base pair are ____________.
Answer:
A point mutation is when a single base pair is altered. Point mutations can have one of three effects. First, the base substitution can be a silent mutation where the altered codon corresponds to the same amino acid.
Explanation:
mark brainliest
4. How does a sound wave vibrate?
Which organism obtains energy without directly depending on another organism
The organism that obtains energy without directly depending on another organism is a PLANT.
PLANTS are organisms which are capable of manufacturing their own food through the process of photosynthesis.
Photosynthesis is defined as the process by which plants use low energy containing inorganic compounds (example carbondioxide and water) in the presence of sunlight, as energy, to produce high energy organic compounds such as sugar. These sugar are used as source of energy in the plant cells.
While animals are the organisms that directly depend on plants( another organism)
Therefore, the organism that obtains energy without directly depending on another organism is a PLANT.
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Signal Sequences: 1)A signal sequence is made of: a.Nucleotides b.Amino acids c.Lipids d.Carbohydrates 2)All protein synthesis starts on ribosomes that are located in the _________________. 3)If a molecule lacks a signal sequence it will end up in the ______________ 4)Proteins with a nuclear localization sequence (NLS) are generated on ribosomes located in the ___________________. 5)Proteins with a mitochondrial signal sequence are generated in ribosomes located in the _________________.
Answer:
1. Option B
2. cytoplasm
3. cytosol
4. nucleus
5. mitochondria
Explanation:
1. Option B
A signal sequence consists of hydrophobic amino acids .
2. cytoplasm in prokaryotes
3. cytosol
4. nucleus
5. mitochondria
1. Based on the examples in the table, how do opinions differ from facts?
2. How do facts differ from theories?
3. Although they're different, what relationship exists between facts and theories?
4. What do all the theories in the table have in common?
5. How do laws differ from theories?
6. If someone told you that plate tectonics is just a theory and that it hasn't been accepted as a law yet, how would this
information conflict with what you understand about theories and laws?
1. Opinions are not always right; facts are.
2. Theories are sometimes right, but sometimes they are either wrong or a little off; facts are on point and with the exact answer.
3. A theory is a scientific explanation of a fact.
4. They all have a good amount of information; also they say approximately to let you know it's not the exact answer.
5. A law is more like a prediction of what will happen if the situation is given and it's shown by the mathematical equation; Theory describes what happens. (Happened).
6. This would try to go against my understanding but it won't happen because I know that theories don't become laws or vice-versa; theories remain theories and law remain laws.
Do internet search enhance our knowledge in animal/fish raising?
Answer:
Yes it does because it helps us to be aware on the things that we should know on how to raise the animals with care,.
Explanation:
3. When the mRNA is translated, the order of its codons determines the order of amino acids in the resulting polypeptide O a. True O b. False
Answer:
True
Explanation:
What adaptation helps the pine tree reduce water loss?
leaves
thorns
Seeds in cones
Woody stems
Answer:
leaves
Explanation:
The needles of pines, like those of other conifers, are well-adapted for growth in dry environments. In particular, the outer surface of pine needles has a thick waxy layer, called a cuticle, which reduces evaporative water loss.
Answer: Option (A) leaves
Explanation:
Pine trees thankfully have needles, which are thin, waxy leaves that enable them to make food year-round. The waxiness of the needles helps evergreens not lose water to evaporation.
Hope it helps! Good luck!!!
Which energy source produces less negative
environmental impacts
A)Renewable Energy Sources
B)Fossil Fuels
Answer:
renewable energy sources !
Explanation:
fossil fuels are bad for our enviroment :)
Which of the following best describes an environmental advantage of urbanization?
А
Individuals living in cities have more varied employment opportunities than individuals living in rural areas.
B
Individuals living in cities have greater access to health care than individuals living in rural areas.
с
Individuals living in cities usually have greater access to fresh, local agricultural products than individuals living in rural areas.
D
Individuals living in cities usually have a lower transportation carbon footprint than individuals living in rural areas.
Individuals living in cities have more varied employment opportunities than
individuals living in rural areas is an environmental advantage of
urbanization.
Urbanization involves the increase in the industrialization thereby leading
to the increase in population to the area. Cities usually have a higher
degree of urbanization due to presence of various industries and access to
the best facilities.
The increase in industries during urbanization makes varied employment
opportunities present and an advantage over the rural areas.
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