Answer:
The correct answer is option C. anaphase.
Explanation:
Anaphase is the process that separates the replicated or duplicated chromosomes present in the nucleus of a parent cell into 2 identical daughter cells.
The chromatids are separated by the mitotic spindle structure. The sister chromatids are separated together at their centromeres. Then separated chromatids are pulled by the spindle to different poles of the cell.
If nondisjunction takes place during anaphase of meiosis then this means that one pair of sister chromatids did not separate which results in 2 cells that have an extra copy of one chromosome and 2 cells that are lacking that chromosome.
A trisomy genetic diseases in males is Klinefelter syndrome caused by the availability of 1 or more X chromosomes.
Thus, the correct answer is option C.
The chemical that promotes phototropism is _____.
-auxin
-gibberellin
-cytokinin
-abscisic acid (ABA)
The chemical that promotes phototropism is auxin, which is essential for cell elongation, allowing plants to bend towards light for optimal photosynthesis.
The chemical that promotes phototropism is auxin. Auxins are plant hormones that play a crucial role in facilitating the elongation of cells, which is a key process in phototropic responses. In plants, phototropism is the bending towards light, allowing plants to maximize their light exposure for photosynthesis. Auxin accumulates on the shady side of a plant, promoting cell expansion and resulting in the bending of the plant toward the light. This process is essential not only for phototropism but also affects gravitropism, apical dominance, and root growth.
Auxins, such as indoleacetic acid (IAA), are found in actively growing parts of the plant. They are integral to plant responses to environmental changes, development, and growth. These hormones are also used in commercial applications, such as promoting the synchronization of fruit setting in crop production.
when you walk your dog, you are using energy from the sunlight to power this activity. explain
Final answer:
When you walk your dog, you are using energy from the sunlight to power this activity. This energy comes from plants that have converted sunlight into chemical energy through photosynthesis.
Explanation:
When you walk your dog, you are using energy from the sunlight to power this activity. This is because sunlight is converted into chemical energy by plants through a process called photosynthesis. The chemical energy is then transferred to animals when they eat plants or other animals that have eaten plants. When you walk your dog, you are using the energy that originated from the sunlight and passed through the food chain.
Based on figure 9-4, which pathway is most efficient at producing energy for a cell? Explain your answer.
Answer:
The correct answer would be pathway C.
Pathway C represents aerobic respiration whereas pathways A and B represent fermentation.
Under aerobic respiration, the cell or organism is able to completely oxidize the glucose.
It produces a large amount of energy (approximately 36-38 ATP) as compared to the fermentation which only produces two molecules of ATP.
Most of the reactions of aerobic respiration take place in the mitochondria.
It includes glycolysis, pyruvate decarboxylation, Krebs cycle, electron transport chain, oxidative phosphorylation.
all of the members of particular species that live in the same area are called
Answer:
population
Explanation:
The answer is population
Most cells obtain water through which process? *
Diffusion
Osmosis
Exocytosis
Active Transport
How is a scientific theory developed ?
Phylum Amoebozoa does NOT include
-amoebas.
-radiolarians.
-foraminiferans.
-none of the above
Answer:
The correct answer will be option radiolarians and foraminiferans.
Explanation:
The 6 kingdom classification system classifies the eukaryotes into six “supergroups” including all kingdoms. These supergroups are monophyletic that is they have evolved from a common ancestor.
Amoebozoa is a supergroup consisting of 2,400 species of amoeboid protists which include organisms such as amoeba and entamoeba while radiolarians and foraminifera are the subtypes of another supergroup called Rhizaria which includes many amoebas.
Thus, radiolarians and foraminiferans are the correct options.
Phylum Amoebozoa includes amoebas, but does not include radiolarians or foraminiferans. These latter groups belong to the Rhizaria phylum instead.
Explanation:
The phylum Amoebozoa includes amoebas but does not include radiolarians or foraminiferans. Radiolarians and foraminiferans belong to the group Rhizaria, not Amoebozoa. The main characteristic of Amoebozoa is that they move using extensions of their cytoplasm called pseudopodia, whereas radiolarians and foraminiferans have their own unique characteristics.
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Which statement best describes the function of capillaries, arteries, and veins in the circulatory system?
A.Capillaries deliver blood to individual cells; arteries bring oxygen-depleted blood back to the heart; veins deliver oxygen-rich blood to the heart.
B. Capillaries deliver oxygen-rich blood to the heart; arteries bring oxygen rich-blood away from the heart; veins deliver blood to individual cells.
C. Capillaries deliver blood to individual cells; veins generally deliver oxygen-depleted blood to the heart; arteries generally bring oxygen-rich blood away from the heart.
D. Capillaries bring oxygen-rich blood away from the heart; arteries deliver blood to individual cells; veins deliver oxygen-rich blood to the heart.
Answer:
c
Explanation:
1.compared to adults,a newborn breathes
a. a quarter as ofter
b.half as often
c.the same amount
d.four times as often
2.the cluster of air sacs at the end of each bronchiole is called
a.bronchi
b.traches
c.alveoli
d.bronchus
3.the flap of elastic cartilage that protect food from entering the larynx is called the
a.epiglottis
b.glottis
c.larynx
d.esophagus
4.when blood leaves the lungs it is
a.oxygenated
b.deoxygenated
c.exchanging gases
d.rich in carbon dioxide
A newborn breathes four times as often as an adult, air sacs at the end of bronchioles are called alveoli, the epiglottis protects the larynx from ingested materials, and blood leaving the lungs is oxygenated.
The respiratory system of humans is a complex arrangement of structures that allows us to breathe in oxygen and expel carbon dioxide. The journey of air begins at the nasal cavity, passes through the pharynx, and progresses into the larynx. The trachea, or windpipe, is next in the path, followed by division into right and left primary bronchi that lead into each lung. These bronchi branch out into smaller bronchioles which then terminate in clusters of air sacs called alveoli, the site of gas exchange with the capillaries in the lungs. Inhalation causes the diaphragm to contract, enlarging the chest cavity and drawing in air, whereas exhalation is due to diaphragm relaxation, pushing air out of the lungs.
Answering the student's questions:
A newborn breathes about four times as often as an adult. This high respiratory rate is necessary to support their rapid metabolism and growth demands.
The cluster of air sacs at the end of each bronchiole is called the alveoli. These structures are vital for the exchange of oxygen and carbon dioxide between the lungs and the blood.
The flap of elastic cartilage that protects food from entering the larynx when swallowing is called the epiglottis.
When blood leaves the lungs, it is oxygenated, meaning that it has a high concentration of oxygen and a low concentration of carbon dioxide after gas exchange has occurred in the alveoli.
Why does cells move?
TRUE or FALSE: The adrenal glands control internal sleep and waking cycles.
Answer: The given is False.
Internal sleep and wake cycles are controlled by circadian biological clock of the body. It is located in the brain. The biological clock produces circadian rhythms in the body which are mental, physical, and behavioral responses of body which follow an everyday cycle.
A tiny region ( Suprachiasmatic nucleus, SCN ) in hypothalamus of the brain controls the circadian rhythms. It does this by generating neuronal and hormonal activities.
Thus, the statement that adrenal glands control internal sleep and waking cycles is False.
If you hear that a cold front is headed for your area, what type of weather might you expect
What moderates much of the air temperature over northwestern Europe?
Which of the following true?
A. chemical bonds are repulsive forces between the atoms of molecules
B. The most reactive atoms already have 8 valence electrons
C. Atoms tend to react so that they acquire 8 electrons in their outermost shell
The correct statement is that atoms tend to react to achieve 8 electrons in their outermost shell, adhering to the octet rule, and forming chemical bonds like ionic bonds through the attraction between oppositely charged ions.
Explanation:Among the provided statements, the correct one is that atoms tend to react so that they acquire 8 electrons in their outermost shell. This is known as the octet rule, which describes the tendency of atoms to prefer to have eight electrons in the valence shell, as this configuration provides stability. Chemical bonds, such as ionic bonds, are indeed formed through the attraction between oppositely charged ions, where atoms can either lose or gain electrons to achieve a full octet.
The other options are false. Chemical bonds are not repulsive forces; they are attractive forces that serve to bind atoms together. Moreover, the most reactive atoms are typically those that do not have a full set of eight valence electrons, as they seek to gain, lose, or share electrons to achieve a full valence shell.
What are the steps by which proteins are coded and synthesized?
Answer:
The major steps of protein synthesis are:
1. Transcription
-before a protein can be synthesized, the DNA information or code must first be copied or transcribed to a type of RNA called mRNA (messenger RNA). Bothe the codes in DNA and mRNA are carried as units called codons.
2. Translation
-in the ribosome, the code carried by the mRNA is translated into a sequence of amino acids that will form the protein molecule dictated by the DNA.
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Which of the following is an example of liverwort?
Sphagnum
Marchantia
Fontinalis
which organism has a nerve net that allows it to respond to a stimulus in a coordinated way
Marine animals are impacted by ocean plastic because
Marine animals are impacted by ocean plastic because it can lead to entanglement, ingestion, and the spread of toxins, which can cause injury, illness, and even death.
Ocean plastic poses a significant threat to marine animals through several mechanisms:
1. Entanglement:
Marine animals, such as seals, turtles, and whales, can become entangled in plastic debris like fishing nets, six-pack rings, and packing straps. This can restrict their movement, leading to injury, impaired feeding, and increased vulnerability to predators. In some cases, entanglement can be fatal.2. Ingestion:
Many marine species mistake plastic debris for food. When ingested, plastic can cause internal blockages and lacerations, leading to starvation, reduced fertility, and death. Smaller pieces of plastic, known as microplastics, are particularly problematic as they can be ingested by a wide range of organisms, from plankton to large fish, and can accumulate in the food chain.3. Chemical Contamination:
Plastics often contain additives such as phthalates, bisphenol A (BPA), which can leach into the water and be absorbed by marine life. Additionally, plastics can adsorb persistent organic pollutants (POPs) from seawater. These chemicals can disrupt endocrine systems, affect growth and reproduction, and increase the risk of disease.4. Spread of Invasive Species:
Plastic debris can act as a raft, transporting species to non-native environments. This can lead to the introduction of invasive species that can outcompete native species, disrupt ecosystems, and lead to biodiversity loss.5. Habitat Disruption:
Large pieces of plastic can damage sensitive habitats like coral reefs and seagrass beds, which are crucial for the survival of many marine species.
A student designed an experiment to demonstrate the interaction between Earth systems. The steps of the experiment are given below.
1. Pour water on a baking dish.
2. Use a fan to blow air over the water.
3. Watch the formation of waves on the water surface.
The student’s experiment demonstrates the:
interactions between the hydrosphere and atmosphere during a storm
interactions between the hydrosphere and geosphere during hurricanes
interactions between the geosphere and atmosphere during tornadoes
interactions between the hydrosphere and cryosphere during a cyclone ...?
The answer is ''interactions between the hydrosphere and atmosphere during a storm''.
Hope this helps...
Explain the difference between perfect and imperfect flowers in complete sentences.
Answer:
Flowers with both functioning male and female parts called as perfect flowers and flowers missing one of the male or female parts called as imperfect flowers.
Explanation:
Plants may produce imperfect flowers or perfect flowers. The main male reproductive part of plants is the stamen and pistil is the main female reproductive part. If both male part and female part are present and functional in a flower, referred as a perfect flower. If anyone of the male part or female part is missing or underdeveloped or not functioning is referred as an imperfect flower.
Imperfect flowers are unable to pollinate themselves directly because they lack the male or female components needed for fertilisation.
The ideal flower has both male and female reproductive organs, including the pistil, which houses the ovary and stigma for fertilisation, and the stamen, which contains the pollen-producing anther. These flowers can pollinate themselves since they have both male and female components on the same blossom. On the other hand, imperfect blooms are devoid of either the male or female reproductive organs. They can also be divided into two groups: pistillate flowers, which have a functioning pistil but no stamens, and staminate blooms, which have just stamens and no functional pistils.
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Which weather condition most directly determines wind speeds at Earth's surface?
The wind speed is a fundamental quantity of atmosphere that is caused by air moving from pressure high to low due to changes in temperature i.e., pressure gradient.
What is pressure gradient?A physical quantity that shows direction and rate the pressure that increases the most rapidly around a particular location is pressure gradient.
The wind speeds are determined by moving air from pressure high to low due to changes in temperature which means air pressure gradient.
Thus, the answer is air pressure gradient.
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Which of the following best describes physical development during adolescence?
Puberty occurs according to a set schedule that is the same for all individuals.
The development of secondary sex characteristics happens at a rate unique to each individual.
The development of secondary sex characteristics begins at the same time for adolescents.
Individuals can expect few changes to their physical characteristics during adolescence.
The right answer is B.
Puberty is a stage of development that is reached when reproductive organs are functional. In humans, it refers to the transition from childhood to adulthood. It is particularly notable for its rapid growth due to growth hormones and the development of primary and secondary sexual characteristics due to sex hormones, with notable behavioral changes including an increased need for sleep due to a shift in melatonin release.
Note that each teenager follows his own development and that there is no pre-established order.
Cellular respiration is a series of complicated reactions. Some of the enzymes that are necessary for the reactions to take place effectively are not produced by the body and must be eaten in a person’s diet. Which answer correctly explains what happens when a person's diet lacks the necessary enzymes for cellular respiration?
A. The production of ATP will increase as the enzyme decreases.
B. The cellular respiration reactions will use another available enzyme.
C. The cellular respiration reaction rate that uses the missing enzyme will increase.
D. The cell's energy level will diminish as the enzyme decreases.
Answer:
D. The cell's energy level will diminish as the enzyme decreases.
Explanation:
Cellular respiration in our body occurs so that our body could generate energy in the form of ATP primarily from carbohydrates. A series of reactions catalyzed by various enzymes facilitate cellular respiration. If our diet lacks the enzymes which are responsible for carrying out cellular respiration and there is no means to produce those enzymes effectively in our body then the cellular respiration reaction will become slow as less enzymes will be available to catalyze the reactions which lead to cellular respiration. Less enzyme means less conversion of substrates into products which leads to less production of ATP. If less ATP will be available then cell's energy level be low.
Answer:
The correct answer is option D
6.) Which of the following terms describes seasonal movement of individuals into and out of a population? A. Immigration B. Emigration C.Natality D. Migration
7. Which of the following equations summarizes population growth?
A. Immigration- emigration B. (Immigration + births) + ( emigration+ deaths) C. Births-deaths D. (Immigration+ births) - (emigration +deaths)
8. The largest population size a given environment can sustain the bull yo The largest population size a given environment can sustainability support is known as its
A. Limiting capacity B. Logistics limit C. Unlimited growth D. Maximum growth
9. Oh populations that increases 5% every year is said to be experiencing
A. Expotensional growth B. Logistic growth C. Unlimited growth D. Maximum growth
Migration describes seasonal movement of individuals into and out of a population. So, the correct options for 6, 7, 8 and 9 are D, D, B and A respectively.
What is Population?A population is a collection of people belonging to the same species who coexist in the same location. A population's size is determined by how many people there are in it.
Different levels of population organisation, from a single person living in a small community to an entire species dispersed over the world, can be examined. The features of a population, such as its age, sex, or genetic make-up, can also be used to characterise it.
Migration is the name given to the seasonal influx and exodus of people from a population. Population increase can be expressed as (Immigration + births) - (Emigration + deaths). The "Logistics limit" of a specific environment refers to the greatest population size that it can support. A population is said to be growing exponentially if it grows by 5% annually.
Therefore, the correct options for 6, 7, 8 and 9 are D, D, B and A respectively.
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what is the best definition of a eukaryotic cell?
Which of these organisms has an endoskeleton?
A.) Beetle
B.) Crab
C.) Elephant
D.) Tree
Why some minerals only occur in metamorphic rock?
Someone please help me. :( Compare your models of the four haploid cells with those of other groups. Describe and explain any variation that you observe.
Explanation:
Haploid cells have the half number of chromosomes(n) than the other groups. Other groups may be diploid, triploid, or sexual and asexual etc. Diploid cells have two complete set of chromosomes(2n), triploid cells have 1 complete set of chromosomes and a 1 half number of chromosome that is (3n). Diploid cells present in each cell an organism and haploid cells are present in gametes forms during spermatogenesis and oogenesis. Mitosis is the parent cell divided into the two daughter cells with equal to 2n. Whereas meiosis produces four genetically different daughter cells.
Mrs. smith has blood type
a. her father has blood type a, and her mother has blood type
b. if mr. smith has blood type ab, what is the probability that they will have a child with blood type ab?
Answer:
The answer is 25%.
Have a good day.
Describe the impact cellular respiration has on other organisms and the environment.
Check your answers by clicking all of the items you included in your explanation.
Carbon dioxide, a product of cellular respiration, is important to the carbon cycle.
Water, for the water cycle, is a product of cellular respiration.
Anaerobic cellular respiration can help produce bread, cheese, and alcohol.