Answer:
- atom
- molecules
- organelles
- cell
- tissue
- organ
- organ system
- complex organism
Explanation:
Bacteria that can live in extreme environments.
thermophiles
halophiles
methanogen
all of the above
A student wishes to target hexokinase, a cytosolic enzyme of glycolysis, to the mitochondria of cells in culture as a project for a senior honor's thesis in her college. What experiment would be necessary to accomplish this task
Answer:
The correct way to accomplish this task is that the student needs to clone a transit sequence into the gene for hexokinase into these cells.
Explanation:
Clone is a hereditarily indistinguishable duplicate of a living being. It could be normally happening or made in the lab. There are various sorts of cloning systems; the most ordinarily utilized strategy is rDNA innovation and technology. During the cycle of rDNA innovation, unfamiliar DNA particles brought into target cells through the vector ( for example Plasmid). This technique is most generally utilized in gene transfer methodologies and gene articulations studies.
So, from the experiment; The correct way to accomplish this task is that the student needs to clone a transit sequence into the gene for hexokinase into these cells.
Which of the following is not a possible effect of increasing carbon dioxide levels in the atmosphere? a. increase in water contamination and floods b. ocean acidification c. cutting down forests d. reduction of cold-related deaths
Answer:
C. Cutting down forests.
Explanation:
Carbon dioxide is an inorganic gaseous molecule with the chemical formula, CO2. It is naturally released into the atmosphere via a lot of processes. However, CO2 is the most important greenhouse gas as it contributes the most to the global warming effect of the Earth.
The effects of an increase in CO2 concentration in the atmosphere is as follows:
- increase in water contamination and floods
- ocean acidification
- reduction of cold-related deaths
However, the cutting down of forests is not an effect of an increase in CO2 concentration but rather a cause.
Answer:
C
Explanation:
Edg 2020-2021
plzz help me to do this please
Answer:
idek
Explanation:
Look at the pedigree below, does anyone in the 4th generation have cystic fibrosis?
A No
B Yes, just Child 2
C Yes, Child 1 & 2
D Yes, Child 3
E Yes, just Child 1
Answer:
C
Explanation:
Child 1 and 2 are both filled in and Child 3 is a carrier, as indicated by the key to the right of the pedigree.
Need help with this
MATCHING - CULTURING TECHNIQUES
Agar Incubator
Media (medium)
Colony Inoculation
Mixed culture
Petri dish
Pure culture
1
Culture plate used to grow microorganisms
2
Derivative of seaweed; dissolves in hot water and
solidifies in cooling; substance on which bacteria grow
Food source for bacteria
3
4.
5
Transfer of microorganism to sterile quantity of
nutrients
Thermostatically controlled chamber which maintains
media at constant optimal temperature
Microbiological habitat that possesses two or more
types of organisms
Collection of one specific type of microorganism
6
7
8
Large cluster of microorganism visible to the naked
eye
Answer:
1 is petri dish and 3 is agar
The leaves of plants have layers that perform different functions. The_____ layer contains chlorophyll which carries out most of the photosynthesis in the leaf.
Answer:
The palisade layer
Explanation:
The palisade mesophyll layer of the leaves is a layer of columnar cells that contain many chloroplasts. This layer is localized right below the epidermis and cuticle of a leaf. The chloroplasts localized in this layer contain chlorophyll, which is the green pigment used to absorb light in order to carry out photosynthesis.
What methods are used
to classify living things
Into groups?
Explanation:
We can classify living things on these things:-
1) If they can carry out processes like respiration, ingestion.
2) If they move on their own
3) if they can talk
THIS WAS A FAIRLY SIMPLE QUESTION!
What is the difference between Desserts, Grasslands and Forests?
Answer:
yaeh
Explanation:
Forests occupy the most favourable environments, where moisture is adequate for growth and survival of a tall, dense vegetation dominated by trees. Deserts are found where moisture is so lacking that a continuous, permanent vegetation cover cannot be maintained. Grasslands lie between these two extremes
Explanation:
Desserts: A desolate terrain, especially one with little water or vegetation; a wasteland.
Grassland: An area dominated by grass or grasslike vegetation.
Forest: A dense collection of trees covering a relatively large area. Larger than woods.
PLEASE ANSWER ASAP!!
Which of the following is most likely to cause the extinction of a species?
O A. genetic variation
O B. mutation
O C. natural selection
O D. a changing environment
Answer:
changing environment
Explanation:
If the species fails to adapt, it will die off.
How are liquid wastes treated at a wastewater treatment plant?
Answer:
They are released into a river, lake, or ocean.
Explanation:
Which natural material is most often used to make paper?
Will give BRAINLY
Answer:
I believe that A Wood is correct
Optogenetics is a powerful tool that uses light to control the activity of specific neurons. These neurons contain artificially introduced light-gated ion channels. A number of different light-gated channels with different ion specificities have been either found in nature (such as the sodium-specific channelrhodopsin, originally found in green algae) or produced via genetic engineering (the production of a chloride ion-specific form of channelrhodopsin). There are also light-gated ion channels specific for potassium or calcium. Sort each light-activated channel type based on whether activation of this channel will tend to depolarize cells or not.
a. chloride channel
b. sodium channel
c. calcium channel
d. potassium channel
A. Promote Depolarization
B. Inhibit Depolarization
Answer:
Sodium and calcium promote depolarization
Chloride and potassium inhibit depolarization
What% of DNA does a clone share with it's parent?
Answer: if its anasexual its 75%-100 if its a sexual its at a minimum of 50-25%
Explanation:
How does artificial selection cause rapid changes in the phenotypes of organisms?
A.By selecting dominant genotypes
B.By changing the number of
chromosomes
C.By changing the frequency of alleles and
selecting new combinations of traits
D.By stimulating the species to increase
the production of new mutants
Answer: A. By selecting dominant genotypes
Explanation:
Artificial selection or selective breeding can be defined as the induced breeding process in which humans select parents of plants and animals that have desired traits that are beneficial for them to produce offspring that have characteristics of both parents and they are of improved yield and quality. This brings the change in the phenotypes of the offspring as compared to the parents. As the passage of dominant desirable traits in the genotype from either of the parent when gets expressed then the phenotype of the organism also change.
In your own words, how would you describe Heredity in one sentence?
Answer: The passing on of traits and physical features from parents to children.
Explanation:
Hope this helps! Have a good day! :)
Euploid changes occur by which of the following developmental errors. A. Non-disjunction during Anaphase I of meiosis. B. Non disjunction during Anaphase II of meiosis. C. Failure of cell division and production of unreduced gametes during meiosis. D. Somatic doubling in the meristem leading to reproductive organs. E. Both A and B are correct. F. Both C and D are correct. G. All the answers are correct.
Answer:
A. Non-disjunction during Anaphase I of meiosis.
Explanation:
Euploidy is an alteration in the organism´s natural number of chromosomes. Individuals with euploidy express a different number of homologous chromosomes set than the one from the normal number.
The cause of this alteration is that homologous chromosomes do not separate during the anaphase of meiosis 1.
There are two types of euploidy:
Polyploidy: Increase in the number of chromosomes characteristic of a diploid complement. During anaphase 1, homologous chromosomes do not separate and migrate together to the same pole. One of the resulting gametes ends with the whole chromosomic material, while the other cell ends with non. The first one goes through the second phase of meiosis and forms two diploid gametes. Monoploidy: Decrease in the normal number of chromosomes. The individual only gets one set of chromosomes. This is a monoploid organism, n.Euploid changes usually takes place as a result of this below developmental errors: is A. Non-disjunction during Anaphase I of meiosis.
Euploidy can be regarded as chromosomal variation which usually take place on the entire set of chromosomes in a cell or an organism.Euploidy can comes in three ways which are;
monoploidydiploidypolyploidyEuploid is due to Non-disjunction that usually occur during Anaphase I of meiosis and this alterations is because of failure of homologous chromosomes to separate during the anaphase of meiosis 1.Therefore, option A is correct.
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Order these to fastest to slowest in heating.
Rock, Water, Sand.
Answer:
Water, Sand, Rock
Explanation:
Refer to the food web above to answer the following: hunting has significantly reduced the snake population. Explain at least two possible effects this will have on the ecosystem.
Answer:
I would need to see the food web to provide accurate answers; but,
mouse, rat, small animals, herbivores population would increase.
Anything that the snake eats would increase in population.
Explanation:
Anything that eats the snake would decrease.
The reduction of the snake population due to hunting in the food web can result in an increase in the population of prey species and a disruption in the energy flow of the ecosystem.
Explain how an increase in the population of prey species can reduce snake population?Snakes are predators and they play an important role in regulating the population of their prey species, such as rodents and insects. With the reduction in the snake population, the number of prey species may increase, leading to a possible imbalance in the ecosystem.
This can lead to an increase in the population of other predators or a decrease in the population of prey species that are lower in the food web.
Disruption in energy flow: Snakes occupy an important trophic level in the food web, and their removal can disrupt the flow of energy and nutrients in the ecosystem.
This can lead to a cascading effect on other species in the food web, as their food sources and predators may be affected. For example, if the snake population declines, the population of the animals they prey on may increase, leading to overgrazing or competition for resources.
Additionally, if snakes are a food source for other predators, the decline in the snake population can affect the survival and reproduction of these predators.
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What skills are needed to an Executive Director of Animal Research?
Answer:
The Executive Director also serves as the Attending Veterinarian, and is responsible for long-range planning, leadership, and oversight of animal care and use at UC Davis. The position manages and strategically harmonizes the distributed operations of over 1 million square feet of animal holding space in 200+ buildings that are overseen by individual vivarium managers.
The Executive Director leads a team of stakeholders that are responsible for identifying solutions that balance multiple and often-competing resource priorities. Cabinet members may include the Sr. Associate Vice Chancellor-Planning, Delivery and Facilities; Sr Associate Vice Chancellor-Finance and Resource Management; Institutional Animal Care and Use Committee (IACUC) Chair; IACUC Administrator; Associate Vice Chancellor-Facilities Management; a Vivarium Facility Manager Representative; Office of Research Representative; User Group representation; and Faculty Advisors designated by the Academic Senate. Each cabinet member (stakeholder) has an equal voice to identify issues and advocate for their respective constituencies but with the equally important responsibility of finding solutions that balance multiple, and often competing, resource priorities and the overriding campus needs.
The Executive Director serves in a public information, training, consultative, and facilitating role on behalf of the University's programs of animal care and use. The Executive Director supports the academic mission by assuring compliance with all applicable federal, state, and local animal welfare regulations that govern the use of animals in research and teaching. The Executive Director works in collaboration with the IACUC and IACUC staff to ensure regulatory matters are addressed, and that animal welfare and research facilitation are balanced with efficient daily operations and long-range academic and facility needs. The Executive Director provides advice to campus animal facility management, animal users, and administration regarding current standards for research and animal care. Serves as an ad-hoc member of the Institutional Biosafety Committee and is required by law as the Attending Veterinarian to serve as a voting member of the IACUC. May also serve as a member of the Ca Dept of Fish & Wildlife Animal Welfare Committee. The Executive Director oversees TRACS (Teaching and Research Animal Care Services); the entity that provides husbandry services to the majority of laboratory animal users on the Davis and Sacramento campuses. The Executive Director supervises the Associate Directors responsible for Campus Veterinary Services (CVS) and Husbandry Services (HS). CVS consists of three senior veterinarians and four veterinary technicians as well as several student employees. These services provide routine veterinary care and project support for most research and teaching animals on and off the UC Davis campus; and are responsible for the Laboratory Animal Residency Program that provides post-doctoral training for veterinarians who wish to specialize in Laboratory Animal Medicine. Physical Demands: - Walk, crouch, kneel, bend, and lift heavy items or animals up to 50 lbs.
- Stand for long periods on hard surfaces (e. g., clinical facilities, surgical suites).
- Lift, move, and bend in the restraint and treatment of laboratory animals. Work Environment: - USDA endorsement or attainment within 1 year of hire. - Valid CA driver's license required. Position will participate in the Department of Motor Vehicles (DMV) Pull Notice System.
- Rabies Vaccination and/or titer, Hepatitis B Vaccination and/or titer other titers/vaccinations as recommended by occupational health physician.
- TB test or chest x-ray, measles vaccination or proof of illness is required prior to employment and annually thereafter.
- Employee is personally responsible for following health and safety guidelines/instructions.
- Must be able to perform assigned duties wearing restrictive protective clothing such as respirators and other personal protective clothing.
- This position is subject to Medical Surveillance procedures and review in accordance with Federal and State Laws and Regulations and University Policy.
- Work flexible schedule.
This position is a critical position and subject to a background check. Employment is contingent upon successful completion of background investigation including criminal history and identity checks. Yes Qualifications Minimum Qualifications: - Doctor of Veterinary Medicine degree (DVM) from a recognized and accredited school of veterinary medicine; Licensed DVM in a state, with the attainment of CA license within 1 year of employment
help plz
A number of studies are carried out in order to verify if there is a relation between the death rate by cardiac diseases ánd the cholesterol level in the blood.The results are shoen in the adjacent graph..
1) explain the relation between the level of blood cholesterol and the risk of cardiac accident
2) firmulate the hypothesis tested in this study
3) what do you conclude concerning the formulated hypothesis?
Answer:
The correct answer is :
1. increase in cholesterol level leads to more death due to cardiac disease.
2. Hypothesis: "if the cholesterol level is high in an individual, then the risk of death due to cardiac disease is high"
3. Everyone should limit or control their cholesterol level to avoid cardiac disease or it might be lethal.
Explanation:
In this graph, it is represented that there is an increase in the deaths due to cardiac disease with the increase in the cholesterol in the body. The death increase slowly up to 2.5 gL and after that, there is a huge spike in death, which explains that the higher the cholesterol level higher the chances or risk of death due to cardiac disease.
Hypothesis: "if the cholesterol level is high in an individual, then the risk of death due to cardiac disease is high"
On the basis of this one should control its body cholesterol to avoid the chances of cardiac disease as it may lead to death.
What does measles cause by
Answer:Measles is a highly contagious virus that lives in the nose and throat mucus of an infected person. It can spread to others through coughing and sneezing. If other people breathe the contaminated air or touch the infected surface, then touch their eyes, noses, or mouths, they can become infected.Measles is caused by a virus in the paramyxovirus family and it is normally passed through direct contact and through the air. The virus infects the respiratory tract, then spreads throughout the body. Measles is a human disease and is not known to occur in animals.
It usually begins as flat red spots that appear on the face at the hairline and spread downward to the neck, trunk, arms, legs, and feet. Small raised bumps may also appear on top of the flat red spots. The spots may become joined together as they spread from the head to the rest of the body.
Explanation:
Answer: GoodMorning: ) ✨ Measles is a highly contagious virus that lives in the nose and throat mucus of an infected person. It can spread to others through coughing and sneezing. If other people breathe the contaminated air or touch the infected surface, then touch their eyes, noses, or mouths, they can become infected.Measles is caused by a virus in the paramyxovirus family and it is normally passed through direct contact and through the air. The virus infects the respiratory tract, then spreads throughout the body. Measles is a human disease and is not known to occur in animals.
It usually begins as flat red spots that appear on the face at the hairline and spread downward to the neck, trunk, arms, legs, and feet. Small raised bumps may also appear on top of the flat red spots. The spots may become joined together as they spread from the head to the rest of the body.
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A heterozygous female with long whiskers mates with a heterozygous male with long
whiskers... W=long whiskers w=short whiskers
What is the PHENOTYPIC RATIO of the offsprings?
Answer:
3 long whiskers: 1 short whiskers
Explanation:
This question involves a single gene coding for whiskers length in a certain animal. The allele for long whiskers (W) is dominant over the allele for short whiskers (w). This means that a heterozygous individual (Ww) will possess a long whisker.
According to this question, a heterozygous female with long whiskers (Ww) mates with a heterozygous male with long whiskers (Ww). The proportion of offsprings that will be produced from this cross (see punnet square) is as follows:
WW, Ww, Ww, ww
WW, Ww, Ww offsprings will possess a long whisker while 'ww' offspring will possess a short whisker. Hence, the phenotypic ratio will be 3 long whiskers: 1 short whiskers
If dylan which has AB- has kids with O blood, could they have a child with O blood. Explain..
Answer:
They could not have O blood because blood types A and B are dominant and O blood is recessive. The only way They could have a child with type O blood is if Dylan was a carrier.
Explanation:
Punnet squares!
The water vascular system of echinoderms (A) functions as a circulatory system that distributes nutrients to body cells. (B) functions in locomotion and feeding. (C) is bilateral in organization, even though the adult animal is not bilaterally symmetrical. (D) moves water through the animal’s body during filter feeding. 4. Which of the following combinations of phylum and description is correct? (A) Echinodermata—radial symmetry as a larva, coelom (B) Nematoda—roundworms, internal skeleton (C) Platyhelminthes—flatworms, gastrovascular cavity, no body cavity (D) Porifera—gastrovascular cavity, coelom
Answer:
The water vascular system of echinoderms (B) functions in locomotion and feeding.
Which of the following combinations of phylum and description is correct? (C) Platyhelminthes—flatworms, gastrovascular cavity, no body cavity
Explanation:
Echinoderms are marine animals. They have a water vascular system that make them able to move (locomation), respiration and food and waste transportation. This system is full of different canal along the body.
Echinodermata has not a radial symmetry as a larva, in fact it has a bilateral symmetry and coelom present. When it comes to Nematoda, they are roundworms and have a pseudocoelomate. Finally, porifera has a gastrovascular cavity and no coelom.
Yeasts are single-celled eukaryotic organisms. Yeasts undergo mitotic division when conditions are favorable. When limited nutrients are available, yeasts start dividing by the process of meiosis.
What is a likely reason for the change from mitosis to meiosis during reproduction under these conditions?
The process of meiosis produces greater numbers of yeast cells at a faster rate as compared to mitosis.
Crossing over of genes during meiosis increases diversity and the chance of survival of the next generation.
Duplication of genes during meiosis ensures efficient functioning of the newly formed yeast cells.
The yeast cells formed by meiosis are able to adapt as well as the parent cell because they are identical.
Yeasts change from mitotic to meiotic division when conditions are unfavorable because meiosis increases genetic diversity and improves their chances of survival in unfavorable conditions.
During meiosis, crossing over of genetic materials between non-homologous chromosomes creates genetic recombination and makes the resulting offspring to be genetically more diverse than their parents.
The increased genetic diversity will increase the chances of survival of the offspring in a constantly changing environment. In other words, the more genetically diverse a population is, the more their chances of surviving adverse environmental conditions.
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what are three animals that have good regeneration abilities? Describe the regeneration abilities of one of the animals in atleast 3 sentences
Answer:
i will give you a few options
Explanation:
Lizards who lose all or part of their tails can grow new ones. ...
Planarians are flat worms. ...
Sea cucumbers have bodies that can grow to be three feet long. ...
Sharks continually replace lost teeth. ...
Spiders can regrow missing legs or parts of legs.
Sponges can be divided
Answer Starfish
These five-limbed creatures can regrow arms that detach from their central disc, and some species have even been observed to complete the process in reverse: regrowing an entire body from a lost arm. To do this the starfish will store nutrients in the arm until it is able to regrow its
Mexican tetra
Researchers in Mexico last week described how they are studying cave-dwelling tetra fish to better understand why some animals can regenerate tissue but others can’t. The scientists performed surgery to remove some of the heart of river fish and cave fish from the species Astyanax mexicanus, finding that while some river fish do regenerate tissue, the cave fish just grew scars over the damage.
Salamander
The amphibious salamander can regrow a lost tail to full length. This process sees cells migrating to the wound and then slowly regenerating the tail within a few weeks. The finished appendage is completely functional and has all the features of the original, with the spinal cord and nerves growing back too.
Axolotl
A relative of the salamander but even more skilled at regenerating is the axolotl. This animal can regenerate not just its tail but also limbs, skin and almost any other body part. Researchers found that each time a limb was removed, it regrew almost perfectly. The pale pink creature has since become the focus of research into human limb regeneration.
Mexican tetra
Researchers in Mexico last week described how they are studying cave-dwelling tetra fish to better understand why some animals can regenerate tissue but others can’t. The scientists performed surgery to remove some of the heart of river fish and cave fish from the species Astyanax Mexicans , finding that while some river fish do regenerate tissue, the cave fish just grew scars over the damage.
Answer the questions below. Will mark the correct answer as brainliest and report irrelevant answers.
Answer:
The reasons are the following.
Explanation:
Bear can live on land in a very cold regions of earth with the help of its thick skin and more hair on its body.
Frogs lives on lands due to its body structure and food availability. It has sticky tongue that captures insects.
Humans lives on lands not in water due to its body structure because its body structure can't allow humans to live in water due to absence of gills.
Seagull lives in the aquatic ecosystem because seagull feeds on fishes and other marine animals.
Sharks lives in water due to its body structure such as gills that are used to respire in water and the shark can't respire without water.
Meerkat lives in the arid climate because they lives underground to save themselves from the environment and the presence of food.
Protea lives in desert due to their dry skin that can tolerate the warm temperature.
Lions lives in the jungle due to the presence of food such as deer, buffalo etc and warm environment.
Dragonfly lives on land and water due to feed on the larva of mosquitoes that is present in the water bodies and good environmental conditions.
4. Do you think that adding more enzymes to a solution would increase the rate of reaction? Why or why not?
Answer:
By increasing the enzyme concentration, the maximum reaction rate greatly increases. Conclusions: The rate of a chemical reaction increases as the substrate concentration increases. Enzymes can greatly speed up the rate of a reaction.
How do T cells coordinate the immune system?
Answer: Helper T cells, or Th cells, coordinate immune responses by communicating with other cells. In most cases, T cells only recognize an antigen if it is carried on the surface of a cell by one of the body's own MHC, or major histocompatibility complex, molecules.
Explanation:
Answer:
T cells identify pathogens based on antigens on the surface of pathogens. The T cells then multiply and stimulate B cells to produce antibodies. The antibodies attach to the antigens, making the pathogens a target for phagocytes.
Explanation: sample response
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