Final answer:
Synapsis and the formation of tetrads take place during Prophase I of meiosis. Homologous chromosomes are bound by a synaptonemal complex to form tetrads, which align independently at the metaphase plate, contributing to genetic diversity.
Explanation:
Synapsis and the formation of tetrads occur during Prophase I of meiosis. At this stage, homologous chromosomes come together to form a synapse, tightly bound by a protein lattice known as the synaptonemal complex and by cohesin proteins at the centromere, leading to the formation of tetrads. Each tetrad comprises four sister chromatids of homologous chromosomes.
Once tetrads are formed, they move to line up at the metaphase plate, located at the midway point between the two poles of the cell. This arrangement contributes to genetic diversity because there is an equal chance of a microtubule fiber encountering either maternally or paternally inherited chromosomes during separation, and the orientation of each tetrad is independent of other tetrads. The chiasmata, which are points where chromosomes exchange genetic material during crossover, maintain contact between the homologues until they segregate.
The most powerful respiratory stimulus for breathing in a healthy person is ________. the most powerful respiratory stimulus for breathing in a healthy person is ________. acidosis alkalosis loss of oxygen in tissues increase of carbon dioxide
What is an advantage of using transgenic bacteria to produce human proteins? (1 point)
The human proteins produced by transgenic bacteria work better than those produced by humans.
Transgenic bacteria can produce human proteins in large amounts.
The human proteins produced by transgenic bacteria last longer than those produced by humans.
Transgenic bacteria can produce human proteins used to make plastics.,
Final answer:
Using transgenic bacteria to produce human proteins offers the advantage of large-scale production, providing a plentiful supply of medically important proteins such as insulin and growth hormones.
Explanation:
An advantage of using transgenic bacteria to produce human proteins is that they can produce these proteins in large amounts. Biotechnology allows for the transformation of bacteria to manufacture human proteins such as insulin, cytokines, and human growth hormone, which are of great medical value. With the rapid replication rate of bacteria and the use of genetic engineering, it is possible to produce these essential proteins more efficiently and in greater quantities than can be achieved through traditional methods.
Notably, the proteins produced by transgenic bacteria are not necessarily superior in quality or longevity compared to those produced by humans; the primary benefit lies in the volume and speed of production. Additionally, genetic engineering and recombinant DNA technology allow for the production of medically necessary proteins that are identical to human proteins, reducing the risk of allergic reactions and improving treatment effectiveness.
What is a tetrad??????
Answer:
Two sets of sister chromatids
Explanation:
in the adult body, food energy not stored as fat or glycogen is lost as ____. heat photons carbon dioxide electromagnetic radiation methane
Answer:
Heat
Explanation:
To obtain the energy from food and store it as either fat or glycogen a series of metabolic chemical reactions take place in the cells of the organism.During this chemical reaction, a large amount of heat is also produced that is either used to maintain the core temperature of the body which is an essential requirement or is lost through the skin to the environment.This is the reason why the energy conversion is not 100% efficient because heat losses are always there.It is estimated that around 75% of the energy that is obtained from food is lost as heat and only 25% gets stored.A haploid Moss spore with sprout grow into the young ___, the dominant generation we recognize that carries most of the plants photosynthesis.
Answer:
Gametophyte
Explanation:
This is is the dominant phase of moses (division bryophyte) and other lower plants such as pteridophytes and liverworts. The gametophytes produce haploid spores. When two diploid spores fuse into a zygote, it grows into a sporophyte, usually attached to a gametophyte, because it depends on it for water and nutrient. The sporophyte then produces haploid spores that give rise to gametophytes. The diploid phase is significant because it gives opportunity for recombination of genes which provides genetic variation among the moss.
The dominant generation in mosses that carries out most of the photosynthesis and is recognizable as the green part is the gametophyte.
A haploid moss spore will grow into the young gametophyte, which is the dominant generation in mosses.This is the stage that is most often recognized due to its green color and role in photosynthesis.The gametophyte produces gametes that, after fertilization, develop into the diploid sporophyte.The sporophyte then forms a capsule, known as a sporangium, which releases spores to continue the life cycle.Mosses exhibit an alternation of generations, where the multicellular haploid gametophyte is followed by a multicellular diploid sporophyte.However, in mosses, the gametophyte is the more prominent and photosynthetically active form.
According to the theory of _____, today’s organisms evolved from past organisms.
natural selection
biological evolution common descent
Answer: common descent
Explanation:
The theory of common descent suggests that the organisms which are found today has been evolved from the organisms used to live in the past. It is a scientific theory which explains the fact that all living organisms that are found on earth are the descendants of a single common ancestor that is the primitive organism. This has been confirmed by analyzing the features present in the fossil remains of the primitive organisms which are found to be nearly similar to that of the organisms living today.
PLEASE HELP AND HURRY WILL GIVE BRAINLIEST TO CORRECT ANSWER, NO WRONG ANSWERS PLEASE
Trees like the mesquite tree have deeper roots than other desert plants. How are these roots an adaptation for survival in the desert ecosystem?
A. deep roots protect the tree from predators
B. roots need the cooler conditions provided further below the desert surface
C. roots extend great distances to reach water
D. deep roots interact with helpful bacteria under the surface
As a result of advances in biotechnology, ________ may become a thing of the past disease pollution hunger joint replacements
Answer:
disease
Explanation:
The biotechnology has been developing very quickly in the past few decades, and its advancements have resulted in numerous benefits to the human kind. If the current trend of development of this field continues, it will probably be able to put an end to the diseases and make them a thing from the past. Through the biotechnology, the human immune system can be made much resilient than it is naturally, thus stopping the diseases from attacking it, or being able to cause damage to it. This has been one of the most desirable things for quite some time, and there's every chance that will happen in the future.
Answer:
the answer is actually Hunger
Explanation:
As a result of increased in bio- technology, there has been reduction in the hunger of the population because of the production of crops with better nutritional benefit.
The testes are contained within the scrotum, which is located outside of the body cavity. Why is this location important? A) It allows for mixing of sperm and urine. B) It is about 3°C cooler than inside the body. C) It provides additional protection for the testes. D) It provides an exit for the sperm to the outside world.
Answer:
B) It is about 3degreesC cooler than inside the body
Explanation:
just did the test on usatestprep
What prevents bullets striking a soldier's chest when h e is on the trench board (fire step)?
Today, the rate of extinction of species surpasses the great mass extinctions of the geologic past, and the largest number of extinctions can be traced to
5. In which country would you call a bus a guague ? ( 1point )
A . argentina
b. spain
c. cuba
d. columbia
If a species is suddenly introduced into a new habitat, what might occur?
1-10 are True or False (This is Environmental Science not physics)
1). an oil rigs searches for and finds oil reservoirs.
2). The volume of oil in one barrel is equal to 42 gallons .
3). The United States uses more oil than any other country in the world.
4). Water can be pumped into oil reservoirs to increase the pressure of the existing oil.
5). The Exxon Valdez ship spilled crude oil off the coast of California
6). Farmers in the United States grow more diverse crops than any other country in the world.
7). Gradually taking over farmland over a long period of time is known as commodities.
8). The 2002 farm bill gives money to farmers who grow crops like wheat and soybean but not to fruit and vegetable farmers.
9). Some farmers have been selling their land to developers because it is more cost-efficient to do so than to grow crops.
10). The FBI regulates the use of pesticides in agriculture crops.
Classifying animals into different taxa can also reflect evolutionary relationships. consider this cladogram with two main branches. it illustrates how anatomical changes resulted in various classifications. considering the cladogram, what statements are true about anatomical and evolutionary relationships? click on all that apply.
Answer:
Organisms at point C will have hair.
All organisms on the main right branch will have bilateral symmetry.
All of the organisms from point B on are terrestrial.
Explanation:
The cladogram of classification of organisms, this that have a common anatomical relationship must have evolved from similar ancestors.
What is a cladogram?A clodagram is a tool used to show relationships between objects in the form of a branching tree with two options where items that are related have something in common whole those that are not will be placed on a different branch.
In the classification of living organisms using a cladogram;
organisms at point C have hairOrganisms at point B are all terrestrial and gave bilateral symmetry.Therefore, using a cladogram, organisms that are have similar anatomical structure evolved from the same ancestors.
Learn more about cladogram at: https://brainly.com/question/12275760
What is a useful complex carbohydrate that cannot be broken down by your body?
do perch and chimps share a common ancestor?
Answer:
The correct answer for: do perch and chimps share a common ancestor? Is yes and its name is: choanoflagellates
Explanation:
To understand the answer we need to analyze its context. First of all, this is only theory and yes, it is believe that choanoflagellates are the closest unicellular ancestors to animals. If this is correct yes all animals on earth share the same ancestor and are those guys. However, if we turn into the primate mammal family species and the pikaia fmily species share direct ancestors the answer is no. But as animals, we do share an ancient ancestor. So yes, they share one ancestor. Even though it's a pretty old one.
A nurse is caring for a client who was admitted with the diagnosis of severe preeclampsia and is now receiving an intravenous infusion of magnesium sulfate. what is the classification of this medication?
Consider a female firefly that produces pheromones, which in turn cause males of the same species to fly toward her. in this scenario, the male would be the _____ and the female the _____.
sorry i need points
Explanation:
When a lake freezes, how does the density of water prevent all of the living organisms in the lake from freezing as well?
Due to surface tension the lake freezes partly because of the pressure.
What is freezing process?Freezing is the process in which phase change or state change takes place it means that a process in which a liquid change into solid.
Freezing process can be achieved by extracting heat i.e or removing latent heat, latent heat, energy absorbed or released by a substance during a change in its physical state (phase) that occurs without change in temperature.
So, during the formation of ice from water, heat is removed from water at zero degree celsius at constant temperature, then water changes into ice.
A freezing or solidification process may occur in a liquid, initially at a uniform temperature, either above or at the the freezing temperature or fusion point.
Therefore,due to surface tension the lake freezes partly because of the pressure.
Learn more about freezing here:
https://brainly.com/question/3121416
#SPJ2
oxygen and carbon dioxide move across respiratory membranes by
Facilitated Diffusion
Active Transport <--- My guess
Simple diffusion
Gated Channels
14 Points!!!! WILL MARK BRAINLIEST!!!!
The patient has a know allergy to penicillin, which would you anticipate not being ordered for your patients bacterial sinusitis?
What pituitary hormone works at the level of the collecting duct to either increase or decrease absorption of water in order to maintain plasma volume and thus blood pressure?
Reflexes are not important to the newborn's survival. do not protect the infant from danger in the environment. are not related to later motor behavior. indicate whether or not the newborn's nervous system is working properly.
What could happen to target cells in an animal that lack receptors for local regulators?
a. they could develop normally in response to neurotransmitters instead.
b. they would not be expected to multiply in response to growth factors from nearby cells.
c. they could compensate by receiving nutrients via an alpha factor.
d. they would divide but could never reach full size.
e. hormones would not be able to interact with target cells?
Final answer:
Correct answer is option b) they would not be expected to multiply in response to growth factors from nearby cells. Lack of receptors for local regulators would prevent target cells from responding to specific growth factors, meaning the cells would not get signals to divide and multiply. Receptors are essential for cells to respond to hormones and other signaling molecules.
Explanation:
If target cells in an animal lack receptors for local regulators, such as certain growth factors or hormones, the cells would not be able to respond to those signals. This could mean that the cells would not receive the necessary instructions to proliferate, differentiate, or perform specific functions. Specifically, option b) they would not be expected to multiply in response to growth factors from nearby cells, correctly explains the situation. Without the ability to respond to growth factors due to the absence of appropriate receptors, these target cells will not get the signal to divide and multiply as they normally would.
Target cells without receptors for [Option b] local regulators would not multiply in response to growth factors from nearby cells.
This is because any cellular response to external signals like growth factors requires the presence of particular receptors. The cells are unable to detect or respond to these signals without these receptors, preventing the anticipated proliferative response. Target cells with particular receptor proteins are typically the targets of hormones and other signals. A signal transduction pathway, which may involve alterations in gene expression and cellular behavior, cannot begin without these receptors. Cells involved in growth and development, for instance, heavily rely on these receptors to appropriately respond to growth factors.If two individuals who are heterozygous for the sickle-cell disease have children, their offspring: select one:
a. will all have the genotype hbs hba.
b. will have a one-quarter chance of being a sickle-cell-free homozygote.
c. will all be heterozygous for the sickle-cell disease.
d. will all have the sickle-cell disease.
e. none of the above is correct.
A nurse teaches a client with diabetes mellitus about foot care. which statements should the nurse include in this client's teaching?
What would damage to the afferent division of the pns affect?
While listening to a client's chest, the nurse notes a rub during inspiration and expiration with a grating sound. when communicating to the health care provider, what should the nurse request in the sbar communication?
When communicating to the healthcare provider, the nurse must report pleural friction rubs during inspiration and expiration because this occurs when the pleural layers or linings are inflamed due to loss of lubrication. The client must be further assess for possible pulmonary infarction or pneumonia and the nurse must recommend for a chest x-ray of the client to evaluate the condition.