Answer:
c. atmosphere
Explanation:
the atmosphere is not part of the Earth's surface
Discuss how important you think it is to protect ecosystems from human-induced change, such as changes in habitat or introduction of invasive species. Should natural conditions be preserved at all costs, should human needs always prevail, or is the answer somewhere in between? Discuss the negative consequences of taking an approach that you disagree with.
Answer:
Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water. ecosystems are vital for human welfare and survival, as they provide us with essential products and benefits.
Over 90% of our food comes from terrestrial ecosystems, which also provide energy, building materials, clothes, medicines, fresh and clean water, and clean air. Protecting wildlife and preserving it for future generations also means that the animals we love don't become a distant memory. And we can maintain a healthy and functional ecosystem.
A muscle that is stimulated so frequently that the relaxation phase is eliminated is said to exhibit _______. Question 13 options: tetanus recruitment treppe wave summation
Answer:
tetanus
Explanation:
Tetanus causes a strong tonic contraction in skeletal muscles. This triggers a series of intermittent, progressive, and extremely painful muscle spasms. Tetanus is presented by patients who have stimulated a muscle too often, without allowing a moment of rest.
In algae and plants, photosynthesis happens in the
vacuoles.
mitochondria.
chloroplasts.
chromosomes.
Answer:
chloroplast........................
Answer:
chloroplasts
Explanation:
they contain chlorophyll, a necessary element for photosynthesis
What does a single colony of a pathogenic microbe represent?
Answers:
A clone
A species
A serotype
All answers are correct
No answers are correct
Question 9
Answer:
clone
Explanation:
First, you introduce to the parents the importance of karyotype test, by describing its ability to detect two broad categories of abnormalities in chromosomes, (1)______________________ and (2)_______________________. You provide a few examples of genetic disorders that can be caused by chromosomal abnormalities, such as (3)_________________________ and (4)_____________________. Some parents would like to know what is the main cause of these genetic disorders. Without going into too much detail, you explain to them that chromosomal abnormalities are usually caused by (5) ____________________ in meiosis I and meiosis II, when the homologous chromosomes or sister chromatids fail to separate during meiotic cell division.
Answer:
Abnormalities in Chromosomes
1. Numerical
2. Structural
3. Down Syndrome
4. Turner Syndrome
5. Disorder or Error
Explanation:
Numerical chromosome abnormalities occur due to extra or missing chromosomes. Structural chromosome abnormalities occur due to the irregular formation or rearrangement of the chromosomal DNA, normally called translocation. Down syndrome occurs with extra chromosomes, more than 46. Turnover syndrome results from partial or missing X chromosomes, less than 46.
Defined forestry and its important in nepal?
Explanation:
In a mountain- ous country such as Nepal, forests are important for the protection of water catchments, the conservation of soil and the maintenance of biodiversity, as well as for their contributions to sustainable rural livelihoods and the maintenance of the environment.Answer:
forest is defined as a large area that has many trees and other plants, or a dense area that is like a forest.
its important in nepal are:
1.for the protection of water catchments,
2.for the conservation of soil and
3.for the maintenance of biodiversity,
4.. for their contributions to sustainable rural livelihoods
5.the maintenance of the environment.
6.it increase the natural beauty of nepal
हरियो वन नेपालको धन
जय नेपाल
The protein calcineurin binds to the protein calmodulin with an association rate of 8.9 × 103 M-1s-1 and an overall dissociation constant, Kd, of 10 nM. The dissociation rate kd is:_____. Please explain step by step.
A. 8.9 × 10^3 M-1s-1
B. 8.9 × 10^2 s-1
C. 1.1 × 10-10 s-1
D. 8.9 × 10-5 s-1
Answer:
D
Explanation:
From the information given:
Association rate [tex]K_a[/tex] = [tex]8.9 \times 10^3 M^{-1}s^{-1}[/tex]
dissociation constant [tex]K_D[/tex] = 10 nM
dissociation rate [tex]K_d[/tex] = ???
Using the following relation from equilibrium dissociation constant to determine the dissociation rate, we have:
[tex]K_D =\dfrac{ K_d}{K_a}[/tex]
[tex]K_d = K_D \times K_a[/tex]
[tex]K_d =(10*10^{-9} \ M) \times (8.9*10^3 \ M^{-1}{s^{-1})[/tex]
[tex]\mathbf{K_d =8.9*10^{-5} \ {s^{-1}}}[/tex]
A scientist is tracking an object orbiting the Sun that is found between Mars and Jupiter. Which additional feature can
be used to determine the object is an asteroid?
O produces a coma
O has an irregular shape
O has a tail of ice and dust
O produces a streak of light
Answer:
The correct answer is actually B. Has an irregular shape.
A solid reactant is placed into a beaker of a warm water. The liquid vigorously bubbles as the solid dissolves into the solution. What will most likely happen if the temperature of the liquid is slightly reduced?
More bubbles will be produced because the solution is becoming more concentrated.
Fewer bubbles will be produced because of fewer collisions of reactant molecules.
The solid will get smaller at a faster rate because of more collisions of reactant molecules.
The solid will get larger at a slower rate because precipitate is coming out of the solution.
Answer: Fewer bubbles will be produced because of fewer collisions of reactant molecules.
Answer:
B) Fewer bubbles will be produced because of fewer collisions of reactant molecules.
Explanation:
on Edge
What would be the most likely candidate for a complete transmembrane segment of a protein in the lysosomal membrane?
Answer:
Alpha-helical and beta-barrels.
Explanation:
Alpha-helical and beta-barrels are the types of transmembrane protein and both are most likely candidate for a complete transmembrane segment of a protein in the lysosomal membrane. A transmembrane protein (TP) is a type of membrane protein that spread in the whole cell membrane. Transmembrane proteins act as gateways that permit the transport of specific substances across the membrane of the cell.
Warfarin acts by inhibiting the activity of the VKORC1 protein, which helps to produce functional clotting factors. There is a variant in the VKORC1 gene that lowers the dose of warfarin required for treatment, and individuals with this variant have increased risk of bleeding when they are treated with warfarin. This variant is found 1639 base pairs upstream of the translational start site. This variant likely:______.
a. decreases the activity of the VKORC1 protein.b. increases the activity of the VKORC1 protein.c. decreases expression of the VKORC1 gene.d. increases expression of the VKORC1 gene.
Answer:
The correct answer - c. decreases expression of the VKORC1 gene.
Explanation:
Mutation of Guanine nucleotide into Adenosine is the reason for this particular type of mutation. This mutation expresses the less expression of the VKORC1 protein.
The mutation results in a decrease in the affinity of the binding site of the transcription factor which causes less expression. Since the VKORC1 protein is less in the body so Warfarin doses are decreased
Thus, the correct answer is - decreases expression of the VKORC1 gene.
D - Telophase
C - Anaphase
A - Prophase
B - Metaphase
th
Choose the correct description for each phase of mitosis.
Answer:
A-B-C-D
Explanation:
PROPHASE; 1. chromosomes become thicker
2. nuclear membrane disintegrates
3. centrosome divide to form centrioles
4. centrioles move to the opposite polls of the cell
METAPHASE; 1. chromosomes get arranged at the equator
2. centrioles produce spindle fibre that attach to the middle of the chromosomes
ANAPHASE; 1. shortest stage of mitosis
2. spindles will pull apart each chromosomes to form chromatids
TELLOPHASE; 1. each chromatid moves to opposite polls of the cell
2. nuclear membrane appears around both of them
3. the centrioles sill stop producing spindles
4. centrosomes will then form again
cytokinesis then divides by the cleavage furrow to form the two daughter cells
Question 4 Multiple Choice Worth 2 points)
In the diagram below, what is the property of the wave indicated by the letter A?
- amplitude
- crest
-frequency
-trough
Answer:
- trough.
Explanation:
The Trough is the lowest wave section, the minimum wave part. It's the other way around from crest.A wave or alternating signal minimal point.A long, narrow depression, waves or ridges between them.A low point in a corporate cycle or on a graph.An extended area of relatively low pressure, often in conjunction with the front.n
Mauna Loa is the most active volcano on Earth.
O True
O False
h
Answer:
it's "True"
Mauna Loa is the most active volcano on Earth
Answer:
True
Explanation:
Because A^2+B^2=C^2
Explain the importance of studying cytology
Answer:
Each cell in the body and its components - tissues and organs - is a functional and structural entity. As a result, examining cytology can aid in the differentiation of normal and afflicted cells, as well as the identification of the disease's etiology at the cellular level.
OAmalOHopeO
have fewer branches than astrocytes. are star-shaped cells. are branched extensions off of a neuron. are small, phagocytic cells in the central nervous system. are the supporting cells of the nervous syste
Answer:
Neuroglia - the supporting cells of the nervous system
Oligodendrocytes - fewer branches than astrocytes
Dendrites - branched extensions off of a neuron
Astrocytes - star-shaped cells
Microglia - small, phagocytic cells in the central nervous system
Explanation:
The given cells in the question are cells of different types of neuroglial cells that are astrocytes, microglia, oligodendrocytes are different types of neuroglial cells. The nervous systems are supported by this Neuroglia.
As the name indicates Astrocytes are star-shaped cells and carry many branches whereas, Dendrites are the smaller, but higher in numbers, projections of the neuron cell body. It has also axon projection bind to the cell body.
• Microglia are phagocytic cells that protects thenervous system
In pulsus paradoxus, even if the pulse cannot be palpated, it can still be heard by using a BP cuff and stethoscope.
a. True
b. False
Answer:
False.
Explanation:
Pulse can't be heard by using a BP cuff and stethoscope because these devices are used to measure the heartbeat and blood pressure of the body. Digital monitors display both blood pressure and heart rate, but you can determine the pulse by checking your pulse by using hand while on the other hand, heartbeats can easily be heard using a good stethoscope so we can say that pulse can't be heard through BP cuff and stethoscope.
What cause disease blood cancer
Answer:
-Advanced age
-Certain types of infections
-Compromised immune system due to such conditions as HIV/AIDS, taking corticosteroids, or organ transplant
-Exposure to certain chemicals
-Exposure to radiation or certain types of chemotherapy
-Family history of blood cancer
-HIV/AIDS
-Solid organ transplant recipient
-Personal history of certain blood disorders
-Personal history of certain genetic disorders (Down syndrome)
-Smoking
Explanation:
Leukemia
A type of cancer which affects the production and function of blood cells. This causes swollen lymph nodes, recurrent nosebleeds, tiredness, frequent infections, weight loss, bleeding, and bone pain. Leukemia symptoms vary, depending on the type of leukemia. Common signs and symptoms of leukemia include:
Swollen lymph nodes especially in the neck and armpits
Experience pain in bones
Night sweats - excessive sweating, especially at Night
Weakness and fatigue
Rapid weight loss
Red spots on the skin
Bleeding and bruising easily
Fever or chills
Frequent infections
Causes
The exact cause is not known. Hereditary and environmental factors may play a role in developing the disease.
The risk factors include:
Mutations in the DNA are frequently a major cause.
Sometimes chromosome translocation can also promote activation of oncogenes (the cancer inducing genes) and this can lead to disease progression.
Exposure to certain chemicals and radiation can also induce cancer.
Which phrase best describes a savana biome
Answer:
A biome that is dry most of the time long tall dried out grass. The savanna is home to many large land mammals, including elephants, giraffes, zebras, rhinoceroses, buffalo, lions, leopards, and cheetahs. Other animals include baboons, crocodiles, antelopes, meerkats, ants, termites, kangaroos, ostriches, and snakes.
Explanation:
Hope this helps ! <33
Explain why virus could not fit into any one of the five kingdom
Answer:
To make copies of themselves they necessarily need the intervention of a cell. Therefore, viruses are not living beings. That is why they are not included in any Kingdom in which living beings are included
1.) Citrus Red Mites can disperse to other locations by ______.
Choose the best answer.
a. crawling and roping.
b. using their wings to fly.
c. egg expulsion shot into other plants.
d. being carried by other insects.
2.) Mark all correct answers.
The mouth parts of insects are important for these reasons.
They can help us identify the insects
They tell us how they feed on a plant
What show the sort of damage they cause.
The kinds of disease they spread.
Answer:
A crawling and roping
They can help us identify the insect
Which question cannot be answered through making measurements?
A. Should the government invest in technologies that can reduce the rate of global warming?
B. How much carbon dioxide is released into the atmosphere when a square mile of tropical rain forest burns?
C. What is the relationship between carbon dioxide emissions and average global temperature?
D. Which human activities contribute to global warming?
Answer:
A and D
Explanation:
vai trò, cấu tại, thuộc tính của hợp chất thứ cấp
Hợp chất thứ cấp là các chất không có chức năng trực tiếp trong các quá trình đồng hóa, hô hấp, vận chuyển, tăng cường và phát triển thực vật. Chức năng chủ yếu của các hợp chất thứ cấp là bảo vệ thực vật chống lại các tác nhân gây bệnh và động vật ăn cỏ. Nhiều chất thứ cấp có hoạt tính sinh học mạnh được dùng làm chất diệt côn trùng, nấm, dược chất. Hợp chất thứ cấp được phân làm ba nhóm chính ở thực vật: Các terpen, các hợp chất phenolic và các hợp chất chứa Nitrogen.
PLEASEEEE ANSWER ASAPPP WILL GIVE BRAINLIESTTT
Identify the number of electrons each of the following atoms needs to gain or lose to have a stable outer electron configuration: Sodium(Na), Sulfur(S), Strontium(Sr)
Answer:
Sodium: +8
Sulfur: +2
Strontium: -2
what are the biological structures
Answer:Biological structures are able to adapt their growth to external mechanical stimuli and impacts. For example, when plants are under external loads, such as wind force and self-weight, the overloaded zones are reinforced by local growth acceleration and the unloaded zones stop growing or even shrink. Such phenomena are recorded in the annual rings of trees. Through his observation of the stems of spruce, K. Metzger, a German forester and author, realized that the final goal of the adaptive growth exhibited by biological structures over time is to achieve uniform stress distribution within them. He published his discovery in 1893.12 A team of scientists at Karlsruhe Research Centre adopted Metzger's observations and developed them to one single design rule: the axiom of uniform stress. The methods derived from this rule are simple and brutally successful like nature itself. An excellent account of the uniform-stress axiom and the optimization methods derived from it is given by Claus Mattheck in his book ‘Design in Nature’.13 The present study utilizes one of these methods, stress-induced material transformation (SMT), to optimize the cavity shape of dental restorations.
Explanation:
Answer:
Structural biology is a branch of molecular biology, biochemistry, and biophysics concerned with the molecular structure of biological macromolecules (especially proteins, made up of amino acids, RNA or DNA, made up of nucleotides, and membranes, made up of lipids), how they acquire the structures they have, and how alterations in their structures affect their function.
Biological structures are able to adapt their growth to external mechanical stimuli and impacts. For example, when plants are under external loads, such as wind force and self-weight, the overloaded zones are reinforced by local growth acceleration and the unloaded zones stop growing or even shrink. Such phenomena are recorded in the annual rings of trees. Through his observation of the stems of spruce, K. Metzger, a German forester and author, realized that the final goal of the adaptive growth exhibited by biological structures over time is to achieve uniform stress distribution within them. He published his discovery in 1893.12 A team of scientists at Karlsruhe Research Centre adopted Metzger's observations and developed them to one single design rule: the axiom of uniform stress. The methods derived from this rule are simple and brutally successful like nature itself. An excellent account of the uniform-stress axiom and the optimization methods derived from it is given by Claus Mattheck in his book ‘Design in Nature’.13 The present study utilizes one of these methods, stress-induced material transformation (SMT), to optimize the cavity shape of dental restorations.
Select all the correct answers.
Which two of these characteristics does an organism with bilateral symmetry possess?
Answer:
symmetrical in many ways across a central axis" and "presence of a head".
Explanation:
Bilateral symmetry is a characteristic that many organisms has at which if we divide the body using an imaginary line, we will see two mirror images. Two characteristics that an organism with bilateral symmetry possess are symmetrical in many ways across a central axis (known as well as the sagittal plane), and presence of a head that is at the middle of the central axis. The great majority of organisms posses bilateral symmetry, including the humans.
what is the total number of bones in the skeleton system
Answer:
Bones provide the structure for our bodies. The adult human skeleton is made up of 206 bones.
OAmalOHopeO
Cell Parts and Their Jobs
1. Label the parts of these two cells in the spaces provided. (pg. 175)
I
Mitochondrion
cell membrane
enroplasmic reticulcm
nucleus
nucleolus
Go
cytoplasm
0
MO
Answer:
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Explanation:
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Which of the following events is typical of meiosis but not of mitosis?
A the chromosomes are highlighted
B. the centrioles are formed
C chromatids separate
D. the homologous chromosomes are paired AND the spindle is formed
Answer:
D. the homologous chromosomes are paired AND the spindle is formed
Explanation:
Meiosis is the type of cell division that results in four daughter cells with each having a reduced number of chromosomes (by half). Both meiosis and mitosis occur in different stages including prophase, metaphase, anaphase etc but meiosis occurs in two series of division processes called meiosis I and meiosis II.
In prophase I of meiosis, homologous chromosomes, which are similar but non-identical chromosomes from male and female parents pair to form tetrad or bivalent. This pairing of homologous chromosome is unique and peculiar to MEIOSIS but never mitosis.
What is the correct volume of air to deliver during BVM ventilations?
