In spermatozoa, a helical arrangement of mitochondria is located in the:
a. acrosome.
b. head.
c. cylindrical middle piece.
d. tail.
Answers
In spermatozoa, a helical arrangement of mitochondria is located in the cylindrical middle piece. The correct option is c
Which structure in spermatozoa contains a helical arrangement of mitochondria?A sperm cell, often known as a spermatozoon, has a head, mid-piece, and a tail. The acrosome, nucleus, and postnuclear cap are all located in the head of the sperm. The mid-piece is situated in the sperm's tail, between the head and the principal piece, and it is where most of the cell's metabolic machinery is located.
In the sperm tail, the axoneme, end-piece, and fibrous sheath are the three sections. The mitochondrial sheath, which has a helical structure, is located in the spermatozoa's cylindrical middle piece. Therefore, the correct option is c. cylindrical middle piece.
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Related Questions
what are the differences between anaerobic respiration and photosynthesis
Answers
Answer:
Aerobic respiration produces energy whereas the photosynthesis is the process for trapping energy.
if you could genetically engineer any species of organism, what would it
be? Would it be a unicorn? A dog-cat hybrid? Your own personal pet
giant? Choose any species-real or not-that your imagination desires! Someone help please :(
Answers
Which of the following correctly describes Photosynthesis?
A. Carbon dioxide and water enter the plant, where oxygen acts as a catalyst to turn them into Glucose. Then light is absorbed and a Chlorophyll pigment transfers the energy into the Glucose, charging it like a battery.
B. Light strikes a Chlorophyll pigment, which splits the oxygen molecules the plant breathes in, releasing energy. Carbon dioxide gas is released as waste.
C. Light strikes a Chlorophyll pigment, which absorbs the energy and uses it to connect the carbons from carbon dioxide together into Glucose, releasing Oxygen gas as a waste product.
D. Light strikes a Chlorine pigment, which absorbs the energy and uses it to connect the carbon from carbon dioxide together into Glucose, releasing water as a waste product.
Answers
Answer:b
Explanation: b is correct
The sentence that correctly described photosynthesis is
B. Light strikes a Chlorophyll pigment, which splits the oxygen molecules the plant breathes in, releasing energy. Carbon dioxide gas is released as waste.
What is photosynthesis?Photosynthesis is a process of converting light, carbon dioxide and water into glucose. Glucose act as a food and energy source for the plant. Photosynthesis occurs in plants and organisms that contain chlorophyll.
Thus, the correct option is B.
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Are there opinions about this document of aids
Answers
How do you know which traits are dominant in an organism like a pea plant?
Answers
To determine which traits are dominant in an organism like a pea plant i.e whether it is homozygous or heterozygous for the trait, a test cross is performed.
To establish if a heterozygote or a homozygote was present in an organism that expressed a dominant characteristic. Breeders of plants and animals still utilise a method known as the test cross. A test cross involves mating a dominantly expressed organism with a homozygous recessive organism with the same trait. All F1 offspring will be heterozygotes exhibiting the dominant characteristic if the dominant-expressing organism is a homozygote. The F1 progeny will instead display a 1:1 ratio of heterozygotes and recessive homozygotes if the dominant expressing organism is a heterozygote. Mendel's premise that pairs of unit components segregate equally is further supported by the test cross.
If an organism has homozygous alleles for the characteristic, all of the organisms in the ensuing F1 generation will exhibit the trait, and their genotypes will be heterozygous for it.
The F1 generation, however, will contain half of the organisms with the dominant phenotype and half with the recessive phenotype if the organism has a heterozygous genotype for the dominant characteristic.
The tall (dominant) or dwarf (recessive) aspect of the pea plants can be used to illustrate this hybrid, as shown.
The parent's genotype will be homozygous dominant (TT) if the outcome is entirely tall plants, and heterozygous dominant (TT) if the outcome is 50% tall and 50% dwarf plants (Tt).
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Explain how the composition of blood changes as blood flows through the respiratory system Please identify TWO organs that interact and explain how the chemical composition of blood changes as a result. . 20 points!!!
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Our total body weight accounts for about 7 to 8 % of blood. Blood is a mixture of around 55 percent plasma and 45 percent blood cells. Blood running through the veins, arteries and capillaries is called whole blood.
How does the blood change as it flows through the respiratory system?
Blood circulatory system, also called the cardiovascular system, delivers oxygen and nutrients to all the cells of the body.
The respiratory system consists of the respiratory passage and respiratory organ, that is the lungs.
Blood is carried to the lungs through the pulmonary arteries where it picks up oxygen. The blood then leaves the lungs and returns to the heart via the pulmonary vein. It then enters the left atrium. The blood then drops into the left ventricle through the mitral valve.
Transport of gases also occurs through blood.
For exchange or oxygenation, the deoxygenated blood is transported to the lungs from heart. Carbon dioxide is exchanged with oxygen as the blood flows through the respiratory system. For further circulation to various body parts, oxygenated blood is then transported to the heart.
Some amount of gases get dissolved in the blood plasma and get transported, whereas some amount of them is transported in the bound state.
So therefore, CO2 and oxygen bind with hemoglobin in RBC.
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I need help! Please!
1. Think about and describe how the organism might move around and how it might eat.
2. Make a list of the organism’s features that might help it survive in its habitat.
3. Describe how each feature you listed is suited to its function.
Answers
Answer 1.- Well a duck is still a bird. So it has hollow bones that makes its body lighter.It eats insects, worms amphibians and plants, so it's an omnivore.2. It has hollow bones, it has an oily coating that prevents any water from settling in its duck feathers. 3. Feature no. 1-Makes body lighter so it's easier to swim, Feature 2- oily coating prevents water from getting into the feathers, preventing any water being absorbed into their bodies.
Explanation:
What chemical elements are present in proteins?
Answers
If the Galapagos Islands were extremely tiny, would Darwin's finches be able to adapt to such extreme climatic shifts? Why or why not?
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If the Galapagos Islands were extremely tiny, Darwin's finches may not be able to adapt to extreme climatic shifts because smaller islands would have less habitat diversity and limited resources, which can constrain the evolutionary potential of the species.
For example, the beak size and shape of Darwin's finches is linked to the availability of different types of food on different islands. On smaller islands, there may not be enough food options for the finches to select for certain beak shapes, which would limit their ability to adapt to changing environments.
Additionally, smaller islands may not offer enough physical space for the finches to migrate and establish new populations when the climate changes. This would limit their ability to escape unfavorable conditions and establish new populations in more suitable environments.
Overall, the ability of Darwin's finches to adapt to extreme climatic shifts on smaller Galapagos Islands would be limited by the reduced habitat diversity, limited resources, and restricted opportunities for migration and speciation.
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if you change the 2 subscript to a 1 is it still carbon dioxide
Answers
Answer:
no
Explanation:
if you change the oxygens its changes the molecule. It would then be known as carbon monoxide (CO)
It is no longer carbon dioxide if the 2 subscript is changed to a 1.
Carbon dioxide is a gaseous molecule made up of one atom of carbon and two atoms of oxygen i.e. CO2. This chemical formula represents the molecule carbon dioxide. As the name implies, di- meaning 2 oxide- from oxygen. According to this question, changing the subscript 2 in oxygen to 1 will result in another different molecule called carbon monoxide (CO). Therefore, it is no longer carbon dioxide if the 2 subscript is changed to a 1.Learn more about subscript of elements at: https://brainly.com/question/22559574?referrer=searchResults
The following data tables summarizes the results of an experiment using primroses
(flowering plants) grown under different conditions of temperature and relative
humidity.
Which conclusion could be drawn from these date tables?
Answers
Answer:
I believe the answer is A "There is an interaction between environment and gene expression."
Explanation:
An organism’s traits are determined by the
A. number of the A-T and G-C pairs in RNA
B. sequence of the deoxyribose sugar in DNA
C. number of thymine bases in RNA
D. sequence of the nitrogenous bases in DNA
Answers
An organism’s traits are determined by the sequence of the deoxyribose sugar in DNA option (B)
what is an organism?Any living system that performs as a separate unit is referred to as an organism. All living things are made up of cells. Organisms are classified by taxonomy into groups such as multicellular animals, plants, and fungi; or unicellular microorganisms such as protists, bacteria, and archaea
what is DNA?Deoxyribonucleic acid is a polymer made of two polynucleotide chains that form a double helix around one another. All known living things, including many viruses, have genetic material in their polymers that direct how they should function, grow, and reproduce. Nucleic acids include ribonucleic acid and DNA.
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Put these items in order from largest to smallest, make sure to watch the video.
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Which of the following statements is true with regard to gene flow?
Gene flow decreases genetic differences between populations.
Gene flow increases genetic differences between populations.
Gene flow occurs when random events change the gene pool.
Gene flow occurs when non-random events change the gene pool.
Answers
Answer:
B Gene flow increases genetic differences between populations.
Explanation:
I think this is the answer.
Answer:
B Gene flow increases genetic differences between populations.
Explanation:
I think this is the answer.
The current trend of increasing global temperatures has Heather wondering how an increase in the temperature of the atmosphere affects the temperature of the ocean. Heather decides to investigate the flow of energy between the atmosphere and the hydrosphere. Which investigation will provide evidence to answer the question, How does a warmer atmosphere affect the temperature of the ocean?A. Measuring the change in the temperature of water while in containers with air of different temperaturesB. Dissolving chalk in water with varying levels of acidityC. Comparing the heat capacity of water with that of other liquidsD. Testing the water solubility of various solids, such as salt and calcium carbonate
Answers
The investigation that will provide evidence to answer Heather's question about how a warmer atmosphere affects the temperature of the ocean, is by meausuring the change in the temperature of water while in containers with air of different temperatures. This will allow her to see the influence of air temperature on water temperature.
The correct option is A.
what is the state of a object when not have net force
Answers
6. Potential energy converts to Kinetic energy and Kinetic energy will convert to
Potential energy. Why does the total energy stay the same? *
The energy is not being created or destroyed: only transformed.
Total energy does not stay the same as some is always lost as heat.
Ο Ο
Energy stays the same because the energy has no where to go but in a system.
Answers
Answer:
The total amount of energy and matter in the Universe remains constant, merely changing from one form to another. ... Once the potential energy locked in carbohydrates is converted into kinetic energy (energy in use or motion), the organism will get no more until energy is input again.
microscopic membrane extensions that extend from the plasma membrane are called?
Answers
Microvilli are finger-like membrane protrusions, which can be extended from plasma-membrane.
What are extensions of plasma-membrane into cell wall?
The expansion of plasma-membrane into cell wall creates mesosomes. This results in formation of vesicles, tubules, and lamellae, among other irregularly folded geometries. Some bacteria, primarily gram-positive bacteria, include mesosomes. These play a crucial role in a number of functions, including the production of cell walls, DNA replication, distribution to daughter cells, respiration and secretion. Respiratory pigments that are involved in bacterial respiration are found in mesosome.
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Fluoroacetate occurs naturally in some plants and is highly toxic to mammals and insects. In cells, it is converted to fluorocitrate, which binds tightly and inhibits an enzyme crucial for cellular respiration, causing citrate buildup. To what enzyme does fluorocitrate bind?.
Answers
The enzyme does fluorocitrate bind is acetyl Coenzyme A (CoA) to form fluoroacetyl CoA.
Hydrofluoric acid is composed of a fluorine atom and a hydrogen atom, linked by a covalent bond. It is a colorless, fuming liquid with a boiling point of 20°C under normal pressure. Therefore, under ambient conditions, where the temperature is 25°C, it is a colorless gas.
Why is Fluoroacetate lethal?Sodium fluoracetate is a highly lethal poison, used in rodenticides, and its marketing is prohibited in the country. According to scients, the zoo's technical-scientific director, the poison acts inside the cells, mainly in the heart, preventing them from breathing.
Fluoroacetate binds to acetyl Coenzyme A (CoA) to form fluoroacetyl CoA, which replaces acetyl CoA in the Krebs energy cycle and reacts with citrate synthase to produce fluorocitrate.
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for animals housed outdoors, any shelters provided to them should be:
Answers
Animals housed outdoors should be provided with shelters that offer protection from the elements and promote their well-being.
In biology, the term "animal" refers to a diverse group of multicellular organisms that belong to the kingdom Animalia. Providing shelters for animals housed outdoors is essential to ensure their welfare and safety. These shelters should protect them from extreme weather conditions such as excessive heat, cold, rain, or snow. The shelters should be designed to offer shade and insulation, preventing the animals from overheating or becoming too cold. They should also be structurally sound and resistant to harsh weather, providing a secure environment for the animals.
Additionally, the shelters should be spacious enough to accommodate the animals comfortably, allowing them to move around and lie down without restrictions. Adequate ventilation is also crucial to maintain good air quality and prevent the buildup of moisture or odours inside the shelter. Overall, shelters for animals housed outdoors should prioritize their protection, comfort, and well-being.
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Match the following statements to the appropriate phase of growth of a microbe grown in batch culture:
a. Lag phase
b. Exponential phase
c. Stationary phase
d. Death phase
Answers
a. Lag phase: This phase occurs when the microbe is first introduced into a new environment or medium. During this phase, the microbe is adapting to the new conditions, synthesizing necessary enzymes, and preparing for rapid growth. The growth rate is slow or negligible during this phase.
b. Exponential phase: Also known as the log phase, this phase is characterized by rapid and exponential growth of the microbe. The conditions in the culture medium are favorable, and the microbe is utilizing available nutrients efficiently. The growth rate is at its maximum during this phase.
c. Stationary phase: In this phase, the growth rate of the microbe levels off and enters a plateau. The number of new cells being produced is balanced by the number of dying cells. The availability of nutrients becomes limited, waste products accumulate, and various factors, such as pH and crowding, contribute to the cessation of exponential growth.
d. Death phase: During this phase, the number of dying cells exceeds the number of newly divided cells. The conditions in the medium are no longer suitable for growth, and depletion of nutrients, build-up of toxic metabolites, and other adverse factors lead to cell death. The population size decreases over time.
In summary:
- Lag phase: Slow or negligible growth as the microbe adapts to new conditions.
- Exponential phase: Rapid and exponential growth of the microbe.
- Stationary phase: Growth rate levels off, reaching a plateau.
- Death phase: Number of dying cells exceeds the number of newly divided cells, leading to a decline in population size.
true / false: the uptake of glucose from the blood into muscle cells is inhibited during exercise because these cells depend upon insulin-mediated glucose uptake (imgu) and insulin becomes inhibited under 'fight-or-flight' activation (select one word answer only please).
Answers
Due to the fact that muscle cells depend on insulin-mediated glucose uptake, which is suppressed when the "fight-or-flight" response is activated, the absorption of glucose from the circulation into muscle cells is slowed down during exercise. This statement is false.
The uptake of glucose from the blood into muscle cells during exercise is actually increased, not inhibited. Although insulin does play a role in glucose uptake by muscle cells, insulin levels do not necessarily become inhibited during exercise.
During exercise, the body's demand for energy increases, leading to an increase in glucose uptake by the muscles to provide energy. This increased glucose uptake is facilitated by several mechanisms, including the activation of glucose transporters (such as GLUT4) and an increase in insulin sensitivity.
While it is true that the "fight-or-flight" response (the physiological response to acute stress) can lead to a decrease in insulin secretion, this decrease is temporary and occurs mainly to preserve glucose availability for the brain and muscles, not to inhibit glucose uptake by the muscles.
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Read Aloud Rate Content Which vessels of the cardiovascular system will have the least amount of pressure? a. muscular arteries Blood meral b. capillary beds c. venules Blood neral d. elastic arteries e. veins
Answers
Aloud Rate Content veins vessels of the cardiovascular system will have the least amount of pressure therefore the correct option is E.
The pressure in the different vessels is determined by the consistence of their walls, the effectiveness of the pumps, and the resistance to blood inflow. Muscular highways have the thickest walls and the most effective pumps, so they've the loftiest pressure. Elastic highways have thick walls and fairly effective pumps,
While capillary beds have veritably thin walls and pumps that aren't as effective. Venules and modes have thinner walls and pumps that aren't as effective, so they've slightly advanced pressure than the capillary beds, but lower than the muscular highways and elastic highways.
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Name three adaptations that helped plants survive on land, and describe how each of them helped. (2 points)
Answers
Three adaptations that helped plants survive on land are cuticle, stomata, and roots. The cuticle protects plants from water loss and UV radiation. Stomata regulate gas exchange, and roots absorb water and nutrients.
When plants moved to land, they had to develop adaptations that would enable them to survive in an environment with fewer resources than they were accustomed to. Three adaptations that helped plants survive on land are discussed below:Cuticle: The cuticle is a waxy layer on the surface of the plant that protects it from water loss and desiccation. This layer is made up of cutin, a waterproof polymer, and is secreted by epidermal cells. The cuticle prevents water from evaporating from the surface of the plant, which is critical for survival in a dry environment. In addition, it also protects the plant from harmful ultraviolet radiation that can damage its DNA.Stomata: Stomata are tiny pores in the leaves and stems of plants that regulate gas exchange and water loss. They are surrounded by guard cells that regulate the opening and closing of the stomata. When there is a need to conserve water, the guard cells can close the stomata to prevent water from evaporating from the plant's surface. When there is a need for carbon dioxide, such as during photosynthesis, the guard cells can open the stomata to allow gas exchange.Roots: Roots are organs that anchor the plant to the ground and absorb water and nutrients from the soil. They allow plants to access water and nutrients that are necessary for survival. Furthermore, roots also help prevent soil erosion and provide support to the plant.Summary: Three adaptations that helped plants survive on land are cuticle, stomata, and roots. The cuticle is a waxy layer on the surface of the plant that prevents water loss and protects the plant from harmful ultraviolet radiation. Stomata are tiny pores that regulate gas exchange and water loss, and roots anchor the plant to the ground and absorb water and nutrients from the soil.For more questions on adaptations
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Definition Secondary consumer
Answers
Answer: secondary consumers are mostly carnivores and omnivores
Explanation:
Secondary consumers prey on other animald
Which of the following terms defines how the individual organism allocates resources to growth, reproduction, and activities or structures related to survival
Answers
Energy budget describes how a particular organism allocates resources for the purpose of reproduction, growth and activities or structures related to survival.
Organisms exhibit growth during their respective life cycles. They growth and size of organisms is determined by the amount of energy that they take up and expend. Organisms obtain this energy from their environment through food and respiration.
Energy budget is very important and it basically specifies how a particular organism takes up energy from the environment and how it uses this energy for a number of different purposes which include reproduction, growth, metabolism, development and maintenance etc.
--The given question is incomplete, the complete question is
"Which of the following terms defines how the individual organism allocates resources to growth, reproduction, and activities or structures related to survival? survivorship, life history, energy budget, demography"
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Which of these
BEST describes why
DNA never leaves
the nucleus?
A. DNA is a very large molecule plus it is a really
important molecule for life that needs
protection.
B. Most DNA serves absolutely no purpose so it
should always stay at home in the nucleus.
C. DNA just cannot compete with other
molecules such as RNA.
Answers
Answer:
A. DNA is a very large molecule plus it is a reallyimportant molecule for life that needsprotection.
Explanation:
DNA cannot leave the nucleus because that would risk it getting damaged. DNA carries the genetic code and all of the information needed for cells and organisms to function properly. If it were damaged or mutated, that would be disastrous for the organism, and could cause serious illnesses or even death.
DNA is a very large molecule plus it is a really important molecule for life that needs protection. Thus, option A is correct.
Why DNA cannot leave the nucleus?DNA will not leave the nucleus as it is because that would risk it as getting it damaged. DNA has carries the genetic code and all of the information needed for the cells and the organisms to function properly. If it has been damaged or mutated, that would bethe disastrous for the organism, and could cause the serious illnesses or even death.
mRNA could leave the nucleus, but the DNA cannot leave the nucleus because RNA has been considered as the single-stranded, and DNA has been double-stranded, so RNA has been smaller than the DNA.
DNA would be not a single-stranded structure. While RNA has been present in the single stranded form in the cell. Due to this, the double-stranded structure of the DNA seems longer than that of RNA to cross the nuclear membrane in the cell. As a result of this, RNA can easily leave the nucleus but DNA couldn't.
Therefore, DNA is a very large molecule plus it is a really important molecule for life that needs protection. Thus, option A is correct.
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what is the relationship between structure and function of molecules
Answers
Answer:
PS:Can I be brainliest.
Have a nice day
Explanation:
Each molecule has a characteristic size and shape that determines its function in the living cell. The shapes of molecules are determined by the positions of the atoms' orbitals. When an atom forms covalent bonds, the orbitals in its valence shell are rearranged.
Each molecule has a characteristic size and shape that determines its function in the living cell. The shapes of molecules are determined by the positions of the atoms' orbitals.
What is molecules?
The smallest component of a substance that possesses both its chemical and physical characteristics. One or more atoms make up molecules.
They may have the same atoms (for example, an oxygen molecule has two oxygen atoms) or different atoms if they have more than one (a water molecule has two hydrogen atoms and one oxygen atom).
Biological molecules like DNA and proteins can include thousands of atoms. When an atom forms covalent bonds, the orbitals in its valence shell are rearranged.
Therefore, Each molecule has a characteristic size and shape that determines its function in the living cell. The shapes of molecules are determined by the positions of the atoms' orbitals.
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 explain one biotic condition in an ecosystem that might make 8 beans best suited for the same environment
Answers
Homeostasis Worksheet Always graph time on the horizontal (X) axis. Label your axes Problem 1: A patient's body temperature was recorded over a 24-hour period; the temperature at each hour is listed in the table below. Graph the data in the space provided and state whether it indicates negative or positive feedback. TIME 12 am 3 am 6 am 9 am 12 pm 3 pm 6 pm 9 pm TEMP, °F 98.30 98.10 98.40 98.90 98.70 98.50 98.60 98.80 TYPE OF FEEDBACK
Answers
Answer:
If temperature drops, it is negative feedback whereas if the temperature increases, it is positive feedback.
Explanation:
When the temperature drops from 98.30 °F, it means it is a negative feedback because its response is negative while if the temperature increases from 98.30 °F, it means it is a positive feedback because its response is positive. From 12 am to 3 am which represents negative feedback, temperature decreases whereas from 3 am to 6 am, the temperature increases which indicates positive feedback. From 6 am to 9 am, again the temperature drops and this fall represents negative feedback and so on.