describe oviposition of frogs briefly.
Answers
Answer:
Oviposition and external embryonic developmental features are described in the Tobago glass frog, Hyalinobatrachium orientale.
Explanation:
Related Questions
What is the per capita growth rate of a population of 250, with 50 births and 80 deaths in a year?
Answers
Why are planets slightly closer to the sun at certain points in their orbit?
Answers
Answer:
They have an elliptical orbit.
Select the correct location on the image.
Study the image of moss and identify the label that describes rhizoids.
Answers
Answer:root-like structure
Explanation:
Plato users
Answer:
The answer is root like structure
Explanation:
Plz help me Plz
The letters X and Y represent missing events. Which option correctly replaces the letters X and Y?
in X, the homologous chromosomes separate, which increases genetic diversity because of Y.
OX: anaphase
Y: independent assortment
OX: anaphase 11
Y nondisjunction
Ox prophase 1
Y nondisjunction
OX: prophase 11
Y crossing over
Answers
Answer:
X: anaphase
Y: independent assortment
Explanation:
Homologous chromosomes seperate during meosis 1 while chromosomes seperate at meosis 2.
Chromosomes are structures present in the nucleus of plant and animal cells. It transfers the genetic information from parent to offspring. Humans have 23 pairs of chromosomes. In which 22 pairs are autosomes while the 23rd pair is the sex chromosome.
The correct answer is:
Option A. OX: anaphase and Y: independent assortment
The explanation for this is:
In anaphase 1 of meiosis 1, the homologous chromosome separates.In an independent assortment, the chromosomes move randomly towards the pole of the cells.Independent assortment of the chromosomes raises the genetic diversity.In meiosis, recombination happens due to which each gamete carries a unique set of DNA.Therefore, in anaphase, the homologous chromosomes separate, which increases genetic diversity because of independent assortment.
To learn more about meiosis and genetic diversity follow the link given below:
https://brainly.com/question/1309598
Sally’s mother has brown, straight hair, and her father has black, curly hair. Sally has brown, curly hair. Which process is responsible for the variation in Sally’s hair type?
Answers
Answer:
recombination of genes during meiosis
Explanation:
How many bacteria are there after 24 hours?
Answers
Answer:
The bacterium doubles every half hour. One hour has two half hours. Thus, 24 hours have 48 half hours. Thus the number of bacteria in the community after 24 hours is 248 .
Explanation:
Mightn't I have some help?
Answers
Answer:
The carbon dioxide level is increasing because the trees in those forests used to take the carbon dioxide for photosynthesis.
Explanation:
coordinated ras and rac activity shapes macropinocytic cups and enables phagocytosis of geometrically diverse bacteria.
Answers
The statement suggests that coordinated activity of the Ras and Rac proteins plays a crucial role in shaping macropinocytic cups and facilitating the process of phagocytosis of bacteria with different shapes.
Macropinocytosis is a cellular process by which cells engulf extracellular fluid and particles into large vesicles called macropinosomes. Phagocytosis, on the other hand, is the process of engulfing and internalizing solid particles, such as bacteria, by specialized cells like macrophages or immune cells.
The Ras and Rac proteins are members of the Ras superfamily of small GTPases that act as molecular switches, controlling various cellular processes, including cytoskeletal reorganization, membrane dynamics, and cell motility.
In the context of macropinocytosis and phagocytosis, the coordinated activity of Ras and Rac proteins is involved in shaping the membrane protrusions called macropinocytic cups or phagocytic cups. These cups are formed when the cell membrane extends outward to surround the target particle or bacterium.
Ras proteins, particularly Ras-GTP, can activate downstream signaling pathways that promote actin polymerization, membrane remodeling, and cup formation. Rac proteins, such as Rac-GTP, are also involved in actin rearrangement and membrane protrusion.
The coordinated activity of Ras and Rac helps in dynamically modulating the cytoskeletal rearrangements necessary for cup formation and efficient engulfment of bacteria with diverse shapes. This coordination ensures the proper extension and closure of the cups, allowing for successful internalization of the target particles.
By shaping the macropinocytic cups or phagocytic cups, the coordinated Ras and Rac activity enables the efficient engulfment of bacteria with different geometries, facilitating the cellular processes of macropinocytosis and phagocytosis.
Further research and experimental studies are necessary to delve deeper into the specific mechanisms and molecular interactions involved in the coordinated activity of Ras and Rac during these processes and to understand their broader implications in cellular physiology and immune responses.
To know more about phagocytosis :
https://brainly.com/question/9754525
#SPJ11
Which of the following terms is represented by word descriptions, such as brown or tall?A. Phenotype.B. Homozygous.C. Allele.D. Genotype.E. Dominance.
Answers
Option A) Phenotype is represented by word descriptions, such as brown or tall for observable physical characteristics.
Option A) Phenotype is correct. It represented by word descriptions, such as brown or tall, as it refers to the observable physical characteristics of an organism resulting from the interaction between its genetic makeup (genotype) and the environment.
Phenotype is the noun that is expressed by adjectives like brown or tall. The observable physical qualities or characteristics of an organism, which are influenced by both genetic and environmental influences, are referred to as phenotypes. Physical qualities like eye colour, hair colour, and height can be included, as well as physiological traits like blood type or enzyme production. The interplay between an organism's genotype and environment leads to phenotypes, which can be impacted by a variety of things like food, exposure to toxins, and other environmental factors. Alleles are multiple versions of a gene that might result in various phenotypes, whereas genotype refers to an organism's genetic make-up, encompassing all of its alleles.
Learn more about phenotype here:
https://brainly.com/question/29021208
#SPJ11
Explain why the marine ecosystem generates a significant fraction of the oxygen in the atmosphere.
Answers
The marine ecosystem generates a significant fraction of the oxygen in the atmosphere due to the process of photosynthesis carried out by phytoplankton, seaweed, and other marine plants.
The marine ecosystem is one of the most significant ecosystems globally, covering over 70% of the earth's surface. It is responsible for providing the oxygen we breathe, controlling the earth's climate and temperature, providing food for millions of people, and supporting marine life.A significant fraction of the oxygen in the atmosphere is generated by the marine ecosystem. This is due to the process of photosynthesis carried out by phytoplankton, seaweed, and other marine plants. During photosynthesis, these marine plants absorb carbon dioxide and release oxygen as a byproduct. The oxygen produced by these plants is released into the atmosphere through diffusion and contributes to the oxygen we breathe.
Seagrasses are flowering plants that grow in shallow water, while mangroves are trees that grow in the intertidal zone of tropical and subtropical coastlines. Both seagrasses and mangroves absorb carbon dioxide and release oxygen during photosynthesis. They also provide habitat for many marine organisms and help to stabilize coastlines.The marine ecosystem is one of the most significant ecosystems globally, covering over 70% of the earth's surface. It is responsible for providing the oxygen we breathe, controlling the earth's climate and temperature, providing food for millions of people, and supporting marine life. However, human activities such as pollution, overfishing, and climate change are threatening the health of the marine ecosystem .
To know more about ecosystem visit:
https://brainly.com/question/30770197
#SPJ11
which change could likely happen if the average temperature increased in an ecosystem? responses organisms would quickly adapt to the change. organisms would quickly adapt to the change. some organisms would not be well-adapted to the higher temperatures. some organisms would not be well-adapted to the higher temperatures. populations of all organisms would increase because of the higher temperatures. populations of all organisms would increase because of the higher temperatures. all organisms would die because of the change.
Answers
If the average temperature increased in an ecosystem, it is likely that some organisms would not be well-adapted to higher temperatures, option B is correct.
Temperature is a critical environmental factor that affects many aspects of an organism's physiology, behavior, and ecology. For example, some species have narrow temperature ranges in which they can survive and reproduce, and even small increases in temperature can cause significant stress.
In aquatic ecosystem, warmer waters can reduce oxygen levels, leading to fish kills and changes in the composition of aquatic communities. Temperature can affect the timing of seasonal events such as flowering, migration, and breeding, which can have consequences for species interactions and ecosystem dynamics, option B is correct.
To learn more about ecosystem follow the link:
brainly.com/question/13979184
#SPJ1
The complete question is:
Which change could likely happen if the average temperature increased in an ecosystem?
A) organisms would quickly adapt to the change.
B) some organisms would not be well-adapted to higher temperatures.
C) populations of all organisms would increase because of the higher temperatures.
D) all organisms would die because of the change.
Indicate whether each of the following statements about DNA binding motifs is true or false.
1. The DNA double-helix contains a major groove and a minor groove. True False
2. Regulatory proteins locate the correct binding site on DNA by accessing the sugars along the major groove. True False
3. Each regulatory protein has its own unique DNA-binding motif. True False
4. The most common DNA-binding motif is the beta-pleated sheet. True False
5. DNA binding motifs generally contain a helical segment, called the recognition helix that fits snugly into the major groove of the DNA molecule. True False
6. The helix-turn-helix motif has one helix that fits into the major groove of DNA and another helix that fits into the minor groove. True False
Answers
1. True
2. False
3. True
4. False
5. True
6. False
1. True: The DNA double-helix does indeed have a major groove and a minor groove, which are grooved regions on the surface of the DNA molecule with different sizes and shapes.
2. False: Regulatory proteins do not locate the binding site on DNA by accessing the sugars along the major groove. Instead, they recognize specific sequences of nucleotides within the DNA molecule.
3. True: Each regulatory protein typically has its own unique DNA-binding motif, which is a specific arrangement of secondary structure elements involved in DNA binding.
4. False: The most common DNA-binding motif is not the beta-pleated sheet. There are various motifs, including helix-turn-helix, zinc fingers, leucine zippers, etc.
5. True: DNA binding motifs commonly contain a helical segment, known as the recognition helix, which fits snugly into the major groove of the DNA molecule, facilitating specific recognition of target sequences.
6. False: The helix-turn-helix motif does not have one helix that fits into the major groove and another helix that fits into the minor groove. Instead, it consists of two alpha helices connected by a short turn, with the recognition helix typically binding to the major groove of DNA.
learn more about nucleotides click here;
https://brainly.com/question/16308848
#SPJ11
Which of the following are true of enzymes?
Specific enzymes can only facilitate one or two reactions.
Enzymes are not changed by facilitating a reaction.
Enzymes lower the activation energy of a reaction.
Each specific enzyme can facilitate many different reactions.
Enzymes are specialized proteins.
Enzymes raise the activation energy of a reaction.
Answers
Answer:
Enzymes raise the activation energy of a reaction
Assume that producers in an ecosystem have 1,000,000 kilocalories of energy. How much energy is available to primary consumers? How much is available to the primary consumers?
Answers
Assuming an ecological efficiency of 10%, the amount of energy available to primary consumers in this ecosystem is 100,000 kilocalories, which is 10% of the energy available to producers.
What is an energy?
In an ecosystem, the energy available to primary consumers is usually less than the energy available to producers, due to energy losses as energy flows through the food chain. The amount of energy available to primary consumers can be estimated using the concept of ecological efficiency, which is the proportion of energy transferred from one trophic level to the next.
Ecological efficiency varies between ecosystems, but a commonly used estimate is around 10%, meaning that about 10% of the energy at one trophic level is transferred to the next trophic level. Using this estimate, we can calculate the amount of energy available to primary consumers as follows:
Energy available to primary consumers = 0.1 * 1,000,000 kilocalories
Energy available to primary consumers = 100,000 kilocalories
Therefore, assuming an ecological efficiency of 10%, the amount of energy available to primary consumers in this ecosystem is 100,000 kilocalories, which is 10% of the energy available to producers.
To know more about ecosystem, visit:
https://brainly.com/question/1673533
#SPJ1
Complete question is: Assuming an ecological efficiency of 10%, the amount of energy available to primary consumers in this ecosystem is 100,000 kilocalories, which is 10% of the energy available to producers.
In an ecosystem, the amount of energy available to each trophic level decreases as we move up the food chain. This is due to the fact that some energy is lost at each step through processes like respiration, movement, and waste.
Assuming that producers in an ecosystem have 1,000,000 kilocalories of energy, the amount of energy available to primary consumers will depend on the efficiency of energy transfer between trophic levels. Generally, this transfer is estimated to be about 10%, meaning that only about 10% of the energy from one trophic level is available to the next trophic level.
Therefore, the amount of energy available to primary consumers would be about 10% of the energy available to producers, or 100,000 kilocalories of energy.
Similarly, the amount of energy available to the secondary consumers (organisms that feed on primary consumers) would be about 10% of the energy available to primary consumers, or 10,000 kilocalories of energy. This process continues for each trophic level, with only about 10% of the energy being passed on to the next level.
What is ecosystem
Ecosystems can range in size from a small pond to a vast biome such as a tropical rainforest. They can be found on land or in water, and each ecosystem has its unique set of characteristics that support specific communities of organism.
What is consumers
In an ecosystem, a consumer refers to an organism that obtains its energy and nutrients by feeding on other organisms. Consumers are part of the food chain or food web and play a critical role in transferring energy and nutrients through the ecosystem.
There are several types of consumers in an ecosystem, including herbivores, carnivores, and omnivores. Herbivores are animals that eat only plants, while carnivores are animals that eat other animals. Omnivores, as the name suggests, eat both plants and animals.
To know more about this visit
https://brainly.in/question/24054748?referrer=searchResults
#SPJ1
what is the most likely source of the increase in carbon dioxide in the atmosphere shown in the graph above
Answers
Answer:
I'm pretty sure its burning fossil fuels and stuff like that
Which of these is different from the others? NSF, UL, ASNI, TLE
Answers
The item that is different from the others is TLE. Therefore the correct optionis option D.
The National Sanitation Foundation, UL (Underwriters Laboratories), and ANSI (American National Standards Institute) are all organisations that create and maintain product safety and performance standards. They are all well-known organisations involved in the testing, certification, and accreditation of a wide range of products and industries.
TLE, on the other hand, is not an organisation that sets criteria for product safety and performance. TLE is difficult to define without more context, but it is not tied to product safety and performance requirements like the other organisations.
For such more question on different:
https://brainly.com/question/28122639
#SPJ11
If this truck was filled with 100 moles of sand, is there a way to determine the number of particles of sand in the truck? Explain.
Answers
Yes, it is possible to determine the number of particles of sand in truck if the molar mass of the sand is known.
How to determine the number of particles of sand in the truck?The number of moles of a substance can be calculated using mass of the substance and its molar mass. Since we know that there are 100 moles of sand in truck, we can use this information to determine the mass of the sand.
Once the mass of the sand is known, we can use the molar mass of sand to calculate number of particles of sand in the truck. Molar mass of sand can be calculated by adding atomic masses of the elements in sand in the ratio of molecular formula.
Using Avogadro's number, we convert the number of moles of sand to the number of particles of sand in the truck.
So, if we know molar mass of the sand, we can determine number of particles of sand in truck using the following formula: Number of particles of sand = (mass of sand / molar mass of sand) x Avogadro's number.
To know more about moles, refer
https://brainly.com/question/29367909
#SPJ1
what do the trait, behaviorist, and psychoanalytic approaches have in common?
Answers
The trait, behaviorist, and psychoanalytic approaches in psychology have some commonalities, including:
1. Focus on Understanding Human Behavior: All three approaches in psychology aim to understand and explain human behavior, albeit from different perspectives.
2. Influenced by Psychology's Historical Roots: The trait, behaviorist, and psychoanalytic approaches all emerged during different periods in the history of psychology and were influenced by the prevailing theories and paradigms of their time.
3. Influence of Individual Factors: Each approach recognizes the significance of individual factors in shaping behavior and personality.
However, it is important to note that there are also significant differences between these approaches, as they emphasize distinct aspects of human behavior and adopt different theoretical frameworks:
1. Trait Approach: The trait approach focuses on identifying and categorizing stable and enduring personality traits that describe and differentiate individuals. It seeks to understand personality through the examination of trait dimensions, such as extroversion, neuroticism, or openness.
2. Behaviorist Approach: The behaviorist approach emphasizes the role of observable behavior in understanding human behavior. It emphasizes the impact of environmental factors, such as rewards and punishments, on learning and shaping behavior. Behaviorists emphasize the importance of studying behavior objectively and reject the focus on internal mental processes.
3. Psychoanalytic Approach: The psychoanalytic approach, developed by Sigmund Freud, explores the influence of unconscious processes and early childhood experiences on behavior. It emphasizes the role of the unconscious mind, defense mechanisms, and the interplay between conscious and unconscious forces in shaping behavior.
While these approaches share a common interest in understanding human behavior, they differ in their underlying theories, methods, and assumptions about the driving forces behind behavior.
To know more about psychology:
https://brainly.com/question/31538247
#SPJ11
The synthesis of ATP by oxidative phosphorylation, using the energy released by movement of protons across the membrane down their electrochemical gradient, is an example of:
a) osmosis.
b) allosteric regulation.
c) a reaction with a positive ?G .
d) an endergonic reaction coupled to an exergonic reaction.
e) active transport.
Answers
The synthesis of ATP by oxidative phosphorylation, using the energy released by movement of protons across the membrane down their electrochemical gradient, is an example of an endergonic reaction coupled to an exergonic reaction.
Option (d) is correct.
The synthesis of ATP by oxidative phosphorylation is an example of an endergonic reaction coupled to an exergonic reaction. In this process, the movement of protons (H+) across the mitochondrial inner membrane occurs down their electrochemical gradient, which is created by the electron transport chain during the process of cellular respiration.
The electron transport chain generates a proton gradient by pumping protons across the inner mitochondrial membrane, creating a higher concentration of protons on one side of the membrane compared to the other. This creates an electrochemical gradient, with a difference in both concentration and charge across the membrane.
The ATP synthase enzyme, located in the inner mitochondrial membrane, utilizes the energy stored in the electrochemical gradient to convert ADP (adenosine diphosphate) and inorganic phosphate (Pi) into ATP (adenosine triphosphate).
Therefore, the correct option is (d).
To learn more about oxidative phosphorylation here
https://brainly.com/question/29104155
#SPJ4
Phospholipids in the cell membrane could be separated experimentally according to their differences in:
Answers
Phospholipids in the cell membrane can be experimentally separated based on their differences in polarity, hydrophobicity, and interactions with the surrounding environment.
Phospholipids are a major component of the cell membrane and consist of a hydrophilic (water-loving) head and hydrophobic (water-repelling) tails. Their differences in polarity and hydrophobicity allow for their separation in experimental procedures.
One common method for separating phospholipids is thin-layer chromatography (TLC). In TLC, a thin layer of a stationary phase (such as silica gel or a cellulose-based material) is coated on a plate, and the sample containing phospholipids is applied to the plate. When the plate is placed in a developing solvent, it moves up through capillary action.
Due to the differences in polarity and hydrophobicity, phospholipids with varying properties will interact differently with the stationary phase and the developing solvent. This differential interaction causes the phospholipids to move at different rates, resulting in their separation on the plate.
Another method used to separate phospholipids is high-performance liquid chromatography (HPLC). HPLC utilizes a liquid mobile phase and a stationary phase packed inside a column. The sample is injected into the column, and the phospholipids are separated based on their interactions with the stationary phase and the solvent.
By adjusting the properties of the mobile phase and the stationary phase, phospholipids can be selectively eluted and separated based on their differences in polarity and hydrophobicity.
Overall, the separation of phospholipids in the cell membrane is achieved through experimental techniques like thin-layer chromatography and high-performance liquid chromatography, which exploit the differences in polarity and hydrophobicity of these molecules.
These methods enable the characterization and analysis of the diverse composition of phospholipids within the cell membrane.
Learn more about chromatography here:
https://brainly.com/question/29785656
#SPJ11
an experiment began with 4 cells and ended with 128 cells. how many generations did the cells go through? group of answer choices A. 5 B. 6 C.64 D.4 E. 32
Answers
Because the experiment began with 4 cells, we can label that as generation 1. From that point, we multiply 4 by 2 until we get to the generation of 128 cells.
Generation 2: 4 • 2 = 8 cells
Generation 3: 8 • 2 = 16 cells
Generation 4: 16 • 2 = 32 cells
Generation 5: 32 • 2 = 64 cells
Generation 6: 64 • 2 = 128 cells
Therefore, it took 6 generations for the experiment to reach 128 cells in the end.
how long can uncooked thawed lobster stay in fridge?
Answers
If you have thawed uncooked lobster in the fridge, it should be cooked and eaten within 1-2 days for the best quality and safety. After that time, the lobster may start to spoil and develop off flavors and odors.
It's important to keep the lobster refrigerated at a temperature of 40°F (4°C) or below during this time, to prevent the growth of harmful bacteria that can cause foodborne illness.
If you don't plan to cook the lobster within 1-2 days, you can also freeze it for later use. To freeze uncooked lobster, wrap it tightly in plastic wrap or aluminum foil, and then place it in an airtight container or freezer bag. It can be stored in the freezer for up to 6 months. When you're ready to cook the lobster, thaw it in the refrigerator overnight before cooking.
To know more about lobster here
https://brainly.com/question/30395248
#SPJ4
How does the ribosome know which proteins to make and how to make them
Answers
Answer: The mRNA from the nucleus will give the information
Explanation: the tRNA will also help by actually pairing the bases together. mRNA will be taken from the nucleus and is created from dna that will help pair the proteins
Hope this helps!
Which of the following describes research that would be considered basic science?
Answers
Answer: D
Explanation:
In adults, which bone marrow is limited to the axial skeleton, pectoral and pelvic girdles, and proximal heads of the humerus and femur?
Answers
Red bone marrow in adults is only found in the axial skeleton, the pectoral and pelvic girdles, and the proximal heads of the humerus and femu.
What is bone marrow?
The spongy substance found inside a few of the body's bones, notably the hip and thigh bones, is called bone marrow. Stem cells, which are immature cells, are found in bone marrow. Blood cells and healthy bone marrow are essential for human survival. A marrow or cord blood transplant may be the best course of treatment when a disorder or illness damages bone marrow to the point where it is no longer able to function properly.
Red bone marrow is limited to the axial skeleton, pectoral and pelvic girdles, and proximal heads of the humerus and femur in adults.
To learn more about humerus, click on the link below –
https://brainly.com/question/10948189
#SPJ4
Reflexes that result from practice or repetition are known as:acquired reflexes.acquired motor skills.intrinsic reflexes.sensory reflexes.speech reflexes.
Answers
Reflexes that result from practice or repetition are known as acquired reflexes. Acquired reflexes are learned responses that occur after repetitive stimulation of a particular stimulus.
These reflexes are different from intrinsic reflexes, which are automatic and do not require any learning or practice to occur. Acquired motor skills are also a type of acquired reflexes that involve the development of coordinated movements through practice and repetition. Sensory reflexes are another type of reflex that involve the automatic response of the nervous system to a particular sensory stimulus.
Finally, speech reflexes are a specific type of acquired reflex that involve the development of speech and language skills through practice and repetition. In summary, acquired reflexes are a type of learned reflex that result from repeated exposure to a particular stimulus.
To know more about Reflexes visit:-
https://brainly.com/question/7226629
#SPJ11
Photosynthesis is related to cellular respiration and why?
Answers
Answer:
Explanation:
Photosynthesis makes the glucose that is used in cellular respiration to make ATP. While photosynthesis requires carbon dioxide and releases oxygen, cellular respiration requires oxygen and releases carbon dioxide. It is the released oxygen that is used by us and most other organisms for cellular respiration. :)
What are the 8 Essential Life Functions?
Answers
Answer:
Repiration, Regulation,Reproduction,Excretion,Growth,Nutrition,Transport,
Explanation:
lol yea i need help again
Answers
Hope this helped :))
Laying the groundwork for the 'germ theory' of disease _________ discovered that organisms cannot spontaneously arise, but must be introduced into an environment.
A. Anthony Van Leeuwenhoek
B. Louis Pasteur
C. Robert Hooke
D. Ernst Ruska
Answers
Laying the groundwork for the 'germ theory of disease, Louis Pasteur discovered that organisms cannot spontaneously arise, but must be introduced into an environment.
Who was Louis Pasteur?Louis Pasteur was a chemist and microbiologist. He is known for the discovery of vaccines, fermentation, and pasteurization.
The germ theory is given by Pasteur. He first of all states that process fermentation is done by living organisms, bacteria, and yeast.
Thus, option B. Louis Pasteur is correct.
Learn more about Louis Pasteur, here:
https://brainly.com/question/11137072
#SPJ5