Your friend tells you that she saw a bright object with a
tail that lasted a few moments in the night sky. She thinks it
might have been a comet. Is she correct? Why or why not?
If not, what did she likely see? Write your answer below in
complete sentences.
Please Hurry!!! Thank you
Answers
probably not, it misht be a satelite, and it burns when it enter in our atmosphere
Answer:
no it was most likely a meteor because meteors burn quick in the atmosphere
Explanation:
Related Questions
Could the people of a culture eat a diet that is normal for their culture if they were following the scientist-designed Kemper diet?
Answers
Answer:
Yes.
Explanation:
Yes, the people of a culture can eat a diet that is normal for their culture if they want to follow the Kemper diet because there are a lot of natural foods are present in the culture. Kemper's diet is heavy on fruits and vegetables and relies on natural foods so the people has a large number of natural foods in their culture so by eating that natural foods they can follow the Kemper diet.
Which statement best explains why carbon is present in so many kinds of molecules?
A. It can form four covalent bonds.
B. It is abundant on earth.
C. It has valence electrons.
D. It can become an ion.
Answers
Answer:
A is the ans
Explanation:
hope it helps :p
Answer:
A. It can form four covalent bonds.
Explanation:
what is a type of asexual reproduction in which a nucleus undergoes cell division and two daughters cells are formed, each containing a complete set of chromosomes
Answers
binary fission?
In binary fission, the parent is split into two daughter cells, each genetically identical while receiving a copy of DNA
Why does active transport require energy?
A) To move substances that lack concentration gradients
B) To move substances between concentration gradients
C) To move substances against their concentration gradient
D) to move substances along their concentration gradient
Answers
Why: I’m almost done with this
What unique property of water makes ice?
Answers
Answer:
Water Molecules.
Explanation:
However, when water Molecules are frozen(lower temperature) they move slower, this is condensation when particles freeze or become gaseous they are either moving faster or moving slower.
name two species of staphylococcus that are part of our normal microbiota
Answers
Answer:
Staphylococcus aureus, and coagulase-negative staphylococci
Explanation:
Two species of staphylococcus that are part of our normal microbiota are Staphylococcus aureus, and coagulase-negative staphylococci.
Beans, peaches, and tomatoes are all in the same group of plants. What do these plants have in common?
Answers
100 points!!!!!!!!!
To reproduce, female elephants produce eggs and male elephants produce sperm. Offspring are produced by the fusion of an egg with a sperm cell. Which statement is true about the offspring? A. The offspring are genetically distinct from the parents because the egg and sperm are both diploid. B. The offspring are genetically identical to the parents because they are produced by sexual reproduction. C. The offspring are genetically distinct from the parents because they are produced by sexual reproduction. D. The offspring are genetically identical to the parents because the egg and sperm are both diploid.
Answers
Answer:
B
Explanation:
C, The offspring are genetically distinct from the parents because they are produced by sexual reproduction.
Sexual reproduction is the fusion between an egg and a sperm cell, and each of these cells has a single set of chromosomes, a haploid. Because of this, their offspring will be a diploid organism with half of its genetic information from their mother and half from their father. The offspring's genetics will be thus unique compared to their parents', because it is a combination of both of their genetic info. If they were to be identical, we would be looking at asexual reproduction, not sexual.
a sea breeze is when the cooler air over the ocean moves towards the land true or false
Answers
Answer:
the answer is true. Hope this helps
Answer:
True
Explanation:
When the sun rises. so does the temp and the air. it then sends back a flow over the sea. Then it piles up and sends the ocean back to the land causing more waves.
The rapid activation of bodily systems to cope with a stressor and restore homeostasis is part of the _____ load model.
Answers
True or false - DNA and RNA store heredity to make proteins?
Answers
in my own opinion I think it's false ..,
If a person is HIV positive, why does he or she need to eat 10% more calories than
do his or her noninfected counterparts?
1. HIV-positive people have a high red blood cell count.
2. HIV-positive people have a low red blood count.
3. HIV-positive people use less energy.
4. HIV-positive people use more energy
Answers
HIV-positive people use more energy. Thus, option "D" is correct.
Why HIV-positive people use more energy?These extra calories are needed by people with HIV because their immune system is constantly fighting off the HIV virus.
This is because HIV attempts to evade the infection even as the immune system attempts to eradicate it. The extra calories give the immune cells, which are extra strained, the energy to perform their functions.
Thus, option "D" is correct.
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Pigments found in chloroplasts that absorb light, typically appear green.
a.) autotrophs
b.) Calvin Cycle
c.) carotenoids
d.) chlorophyll
e.) heterotrophs
f.) NADP+/NADPH
g.) photons
h.) photosystem
i.) stomata
j.) thylakoids
Answers
D). Pigments found in chloroplasts that absorb light and typically appear green are called chlorophyll (d).
These pigments are crucial for autotrophs (a), such as plants, which convert light energy into chemical energy through photosynthesis. Photosynthesis occurs in the thylakoids (j) of chloroplasts and involves two main stages: the light-dependent reactions and the Calvin Cycle (b).During the light-dependent reactions, chlorophyll and other pigments, like carotenoids (c), absorb photons (g) from light, creating high-energy electrons. These electrons move through a photosystem (h), eventually producing NADPH (f) and ATP, which are used in the Calvin Cycle. The Calvin Cycle, a light-independent process, converts carbon dioxide into glucose using the energy from NADPH and ATP.
Heterotrophs (e) are organisms that cannot produce their own food and rely on consuming autotrophs or other heterotrophs for energy. Stomata (i) are tiny openings in the leaves of plants that allow gas exchange, such as the intake of CO2 for photosynthesis and the release of oxygen produced during the process.
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item 7 what is(are) the advantage(s) of there being a low blood pressure in the pulmonary circuit? check all that apply. check all that apply hydrostatic pressure overrides oncotic pressure, so pulmonary capillaries are engaged almost entirely in absorption.hydrostatic pressure overrides oncotic pressure, so pulmonary capillaries are engaged almost entirely in absorption. blood flows more slowly through the pulmonary capillaries and therefore has more time for gas exchange.blood flows more slowly through the pulmonary capillaries and therefore has more time for gas exchange. it prevents fluid accumulation in the alveolar walls and lumens, which would compromise gas exchange.it prevents fluid accumulation in the alveolar walls and lumens, which would compromise gas exchange. oncotic pressure overrides hydrostatic pressure, so pulmonary capillaries are engaged almost entirely in absorption.oncotic pressure overrides hydrostatic pressure, so pulmonary capillaries are engaged almost entirely in absorption. blood flows more quickly through the pulmonary capillaries, and therefore it has more time for gas exchange.
Answers
The pulmonary circuit is responsible for carrying deoxygenated blood from the heart to the lungs for oxygenation and removal of carbon dioxide.
One advantage of having a low blood pressure in the pulmonary circuit is that it allows for a slower flow of blood through the pulmonary capillaries. This slower flow allows for more time for gas exchange to occur between the blood and the air in the lungs. Additionally, a low blood pressure in the pulmonary circuit helps prevent fluid accumulation in the alveolar walls and lumens, which could interfere with gas exchange.
Lastly, the hydrostatic pressure in the pulmonary capillaries overrides oncotic pressure, allowing for almost complete absorption of fluids.
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Complete Question:
What is/are the advantage(s) of there being a low blood pressure in the pulmonary circuit? Check all that apply:
A. Hydrostatic pressure overrides oncotic pressure, so pulmonary capillaries are engaged almost entirely in absorption.
B. Blood flows more slowly through the pulmonary capillaries and therefore has more time for gas exchange.
C. It prevents fluid accumulation in the alveolar walls and lumens, which would compromise gas exchange.
D. Oncotic pressure overrides hydrostatic pressure, so pulmonary capillaries are engaged almost entirely in absorption.
E. Blood flows more quickly through the pulmonary capillaries, and therefore it has more time for gas exchange.
ethylene is an organic complound porduced by reipining fruits. in a controlled experment, eseachers found that ethylene gas stimulated the ripening process in newly harvested druits. which o ht efolowing describes the most likely connection between natural ethylene production and frui ripening
Answers
Every fruit produces a particular amount of ethylene over the course of its lifecycle, and it is known as the "fruit-ripening hormone." However, when some fruits begin to ripen, their ethylene levels suddenly increase.
Most fruits contain a gaseous molecule called ethylene that starts the ripening process. Its level in under-ripe fruit is relatively low, but as fruit mature, they create higher amounts that speed up the ripening process or the stage of ripening known as the “climacteric.” The level of ethylene and rate of ripening is a variety-dependent process. Some apple types, like McIntosh, create astronomical levels of ethylene, which makes them difficult to store. They immediately soften and senesce in storage when harvested after the sudden surge in ethylene. Other types have a slower rise in ethylene and slower ripening rate.
Hence, ethylene molecule influence ripening by inducing changes over fruit covering.
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how many times and during which phase of meiosis do the chromosome replicate?
Answers
Interphase is divided into three phases, G1 (first gap), S (synthesis), and G 2 (second gap). During all three phases, the cell grows by producing proteins and cytoplasmic organelles. However, chromosomes are replicated only during the S phase. It is the preparatory phase for the cell before cell division.
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Which explains how interference is avoided between the signals that cordless phones receive and the signals that they broadcast?
Answers
Answer:
the signals have different frequency
Explanation:
The way that interference is avoided in these cases is that the signals have different frequency. Cell phone signals travel in a very specific wavelength, how often this wave repeats in a given span is called the frequency. By having these signals in different frequencies it prevents the signals from mixing with each other and instead allowing them to reach their destination intact. Otherwise, the signals would combine into a mess of uncomprehensible data, which is what we call interference.
Answer:
D.anywhere its service broadcasts and it can receive a signal.
Explanation:
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What is the normal/average pH level of lake in a healthy ecosystem?
Answers
Usually fresh water lakes have a pH range between 6.5 to 8.5, this is appropiate for many organisms life and development.
Try to identify the following based on their description by a field geologist:
This sample appears to be constructed of clay minerals. With a tightly packed material into lamina, that when the geologist accidentally dropped and the sample broke discovered evidence of past plant material along the broken surface.
Answers
Based on the description provided, this sample is likely a sedimentary rock known as mudstone or shale.
These types of rocks are composed primarily of clay minerals, which have a fine-grained, tightly-packed structure. The presence of laminations, or layers, is also consistent with mudstone or shale. The discovery of past plant material along the broken surface suggests that the rock was formed in an environment where plant material was present, such as in a lake or swamp. Mudstone and shale are often formed by the accumulation and compression of sediment, such as clay and silt, in these types of environments.
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If lateral inhibition was the correct explanation for the Hermann grid illusion, than the illusion would be caused by activity at the _____ level, but if center-surround was the correct explanation then it would be caused by activity at the _____ level. LGN, Retinal. Retinal, LGN. V1, Retinal. Retinal, V1.
Answers
In summary, if lateral inhibition is the correct explanation, the illusion is caused by activity at the retinal level. If the center-surround mechanism is the correct explanation, the illusion is caused by activity at the LGN level. These two explanations highlight different levels of neural processing involved in the perception of the Hermann grid illusion.
If lateral inhibition was the correct explanation for the Hermann grid illusion, the illusion would be caused by activity at the retinal level. Lateral inhibition refers to the process where the activity of one neuron inhibits the activity of neighboring neurons.
In the context of the Hermann grid illusion, it is believed that lateral inhibition between retinal ganglion cells causes the perceived dark spots at the intersections of the grid.
On the other hand, if the center-surround mechanism was the correct explanation, the illusion would be caused by activity at the LGN (lateral geniculate nucleus) level.
The center-surround mechanism refers to the receptive fields of neurons in the visual system, where there is a central region that responds to light and a surrounding region that inhibits the response.
In this case, it is proposed that the interaction between the center and surround receptive fields in the LGN contributes to the Hermann grid illusion.
In summary, if lateral inhibition is the correct explanation, the illusion is caused by activity at the retinal level. If the center-surround mechanism is the correct explanation, the illusion is caused by activity at the LGN level. These two explanations highlight different levels of neural processing involved in the perception of the Hermann grid illusion.
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what do the arrows represent in the diagram
Answers
Answer:
The direction of where the plates are going
Answer:
the direction
Explanation:
because that's it I had that same question in my test an I passed it
A couple has three children, two of which have blonde hair. The third child and both parents have dark hair. What can be determined about the gene for hair color in this family
Answers
Answer:
Blonde hair color.
Explanation:
it is an autosomal recessive trait
cell division that reduces chromosome number from diploid to haploid, reduction division
A Mitosis
B Meiosis
C Amitosis
D Fision
Answers
Meiosis is a type of cell division that reduces chromosome number from diploid to haploid.
What do you mean by meiosis?
Meiosis, also called reduction division, division of a germ cell involving two fissions of the nucleus and giving rise to four gametes, or sex cells, each possessing half the number of chromosomes of the original cell.
The process of meiosis is characteristic of organisms that reproduce sexually. Such species have in the nucleus of each cell a diploid (double) set of chromosomes, consisting of two haploid sets (one inherited from each parent). These haploid sets are homologous—i.e., they contain the same kinds of genes, but not necessarily in the same form.
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Meiosis is the division of a cell that reduces the number of chromosomes from a diploid (2n) state to a haploid (n) state.
What is diploid?
Diploid is a term used in genetics to refer to a cell or organism that has two sets of chromosomes. In humans, the diploid number of chromosomes is 46, which is two sets of 23. This means that any human cell contains two copies of each chromosome, one from each parent. Diploid cells are found in multicellular organisms, and are the most common form of cells in the human body. Diploidy is important for genetic diversity, as it allows for the exchange of genetic material between the two sets of chromosomes. This helps create genetic variation, which is necessary for evolution to occur.
This occurs in sex cells during the process of gamete formation, and is essential for sexual reproduction. During meiosis, two consecutive nuclear divisions (meiosis I and meiosis II) reduce the number of chromosomes by half. This process also involves cell division, which results in four haploid daughter cells. Each daughter cell contains one set of chromosomes, which is a combination of the maternal and paternal chromosomes of the original cell.
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in biology the different areas of study are connected and overlap in various ways with concepts that cut across all discliptines which pair of crosscutting concepts are best exeplied when birds fly south when winter comes to the united states and north when spring arrives
Answers
Patterns; cause and effect are pair of crosscutting concepts are best explained when birds fly south when winter comes to the united states and north when spring arrives.
What notions span crosscutting concepts?
In all branches of science, crosscutting concepts are useful. As such, they serve as a means of connecting the various branches of science. They consist of patterns, cause-and-effect relationships, scale, proportion, and quantity, systems, and system models, as well as energy and matter, structure and function, stability, and change.
Patterns: Observed patterns in nature serve as a guide for organizing and classification and raise inquiries about the connections and reasons that underlie them.
Cause and Effect: Events have causes, some of which are straightforward and others of which are complex. Science and engineering place a high priority on understanding causal links and the systems that mediate them.
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which of the following statements describes the evolution by natural selection of mycobacterium tuberculosis bacteria in their new environment? view available hint(s)for part e which of the following statements describes the evolution by natural selection of mycobacterium tuberculosis bacteria in their new environment? the drug-susceptibility trait is an adaptation to the environment of antibacterial soaps. the drug-susceptibility trait is an adaptation to the environment in which human hosts are medicated with the antibiotic rifampin. the drug-resistance trait is an adaptation to the environment in which human hosts are medicated with the antibiotic rifampin. the drug-resistance trait is an adaptation to the environment in which human hosts travel worldwide and are exposed to new strains of bacteria.
Answers
The statement that describes the evolution by natural selection of Mycobacterium is option b. The ability to resist drugs is an adaptation to the context in which rifampin is used to treat human hosts.
In the new environment created by the use of antibiotics on humans, bacterial cells are more fit when they are resistant to drugs. The ability to resist drugs is an adaptation to the context in which rifampin is used to treat human hosts.
The genome was reduced, and new genes were acquired as the Mycobacterium tuberculosis complex (MTBC) changed from an environmental organism to an obligate pathogen. Developing the capacity to grow inside host cells and the capability to transmit directly across hosts were crucial phases in this process.
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Proper question is:
Which of the following statements describes the evolution by natural selection of Mycobacterium tuberculosis bacteria in their new environment?
a. The drug-susceptibility trait is an adaptation to the environment in which human hosts are medicated with the antibiotic rifampin.
b. The drug-resistance trait is an adaptation to the environment in which human hosts are medicated with the antibiotic rifampin.
c. The drug-susceptibility trait is an adaptation to the environment of antibacterial soaps.
d. The drug-resistance trait is an adaptation to the environment in which human hosts travel worldwide and are exposed to new strains of bacteria.
why If a fire destroys all the above-ground vegetation, the bracken will still grow
Answers
Answer:
If a fire destroys all the above-ground vegetation, the bracken will still grow because bracken ferns have underground structures called rhizomes that are able to survive the fire and regrow from the surviving rhizomes. Bracken ferns are also able to release spores of their rhizomes that can grow into new plants. This means that even if the above-ground foliage is destroyed, the plant will be able to regrow from the surviving rhizomes. Additionally, bracken ferns are able to quickly colonize areas of disturbed land, such as those affected by a fire, making them a dominant species in many post-fire landscapes.
Is the DNA replicated after Meiosis I? Why or why not?
Answers
No, due to the fact DNA is replicated in Interphase first and no interphase degree exists after after Meiosis 1.
Meiosis, divided into meiosis I and meiosis II, is a manner wherein a diploid cell divides itself into 4 haploid cells. Note that meiosis II without delay follows meiosis I; DNA replication does now no longer arise after meiosis I. The cell undergoes divisions in meiosis i.e. meiosis I and meiosis II. Meiosis I is discount department and meiosis II is much like mitosis however DNA replicates simplest as soon as throughout meiosis, i.e. earlier than meiosis I in S phase. The initiation of meiosis calls for each intrinsic and extrinsic signals. Meiosis is characterized via way of means of one spherical of DNA replication observed via way of means of rounds of cell department, ensuing in haploid germ cells.
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select all of the following cell types that are considered eukaryotic. multiple select question. animal cells bacterial cells plant cells fungal cells need help? review these
Answers
Animal cells, plant cells, and fungal cells are considered eukaryotic. Bacterial cells are prokaryotic.
Why are bacterial cells prokaryotic?Bacterial cells are prokaryotic because they lack a true nucleus and membrane-bound organelles. The genetic material in bacteria is not contained within a nucleus but exists as a single, circular chromosome in the cytoplasm. Bacteria also lack other membrane-bound organelles.
What is present in a eukaryotic cell?Eukaryotic cells have a well-defined nucleus that contains genetic material, which is organized into chromosomes. They also have membrane-bound organelles that carry out specific functions, such as mitochondria, endoplasmic reticulum, Golgi apparatus, lysosomes, and peroxisomes.
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. Answer the following questions for the problem of antibiotic-resistant bacteria.
What is your claim to fixing the problem?
Having resistant body when taking antibiotics
Antibiotic resistance occurs when the body builds up a resistance to antibiotics.
Anti
Answers
Answer:
antibiotics resistant occur when the body build up a resistance to antibiotics
it is an imaginary straight line going from the north to the south pole
Answers
An equator, is the definition of that!
Answer:
Prime meridian or the Greenwich meridian