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Question 1
The cell cycle is a repeating series of events that include growth, DNA synthesis, and cell division.
A.True
B. False
Question 2
During which stage of the cell cycle does the cell condense chromosomes and break down the nuclear envelope?
Anaphase
Interphase
Metaphase
Telophase
Question 3
Which is the third stage of mitosis?
Anaphase
Interphase
Metaphase
Telophase
Question 4
How is cytokinesis different in animals and plants?
Animal cells get pinched into two daughter cells by the cell membrane; the plant cell has to form a cell plate before it can create daughter cells.
Animal cells give daughter cells a full set of chromosomes at the time of division; plant cells give daughter cells a half set of chromosomes.
Animal cells require an extra growth phase before cytokinesis; plant cells move straight to cytokinesis.
Animal cells begin cytokinesis during anaphase; plant cells begin around the same time as telophase.
Question 5
During which stage of interphase does the cell grow to nearly its full size?
First gap
Second gap
Prophase
Synthesis
Question 6
Which of the following is one stage of the cell cycle?
Cellular respiration
Mitosis
Multiplication
Photosynthesis
Question 7
Explain why it is important for daughter cells to have a full set of chromosomes. Use complete sentences.
The term mitosis does not apply to prokaryotes since, it involves nuclear division and eukaryotic structures.
Marvin blows up a balloon but lets go of it. The air inside is released and the balloon goes up into the air. What best describes what happens? A) Gravity pushes the balloon into the air. B) Drag is caused by contact of the balloon with the air. C) Lift lowers the air pressure on the top of the balloon. D) The air pushes the balloon in the opposite direction.
Answer:
D) The air pushes the balloon in the opposite direction.
Explanation:
When the balloon bursts the air pushes the balloon in the opposite direction to the air that was released from inside the balloon. This is because of the difference between the atmospheric pressure and the pressure that was inside the balloon. When the balloon bursts, the pressure gradient causes a force that causes the air inside the balloon and the balloon to be pushed in opposite directions.
The ara operon is controlled by a regulator protein that exerts ________.
AraC protein certain to the ara
operator works as a repressor that avoid transcription of the same ara operon
and the araC gene AraC protein is an activator in the presence of arabinose and
repressor in the absence of arabinose -With arabinose absent, the AraC protein
stays as
a homodimer. One AraC protein put together to the ara initiator and the other
protein now binds to a different regulatory site in DNA called the ara operator.
does a plant have a closed or open circulatory system
Arabinose is a monosaccharide that
e. coli can use as an energy source. when both glucose and arabinose are present in the media,
Given a template strand of 3'-atgcttggaca-5' and a partially-made complementary strand containing only 5'-tac-3', what would be the sequence of the new strand of dna (including the 5'-tac-3') if the only additional nucleotides available to dna polymerase were those containing the bases g, a, and c?
The cytoskeleton is an internal scaffolding used for cellular movement true or false
The ____________ contains vertically arranged maculae that would provide feedback of body movement in the vertical plane
Why are invasive species dangerous to the environment?
Early detection, rapid response, and effective management strategies are crucial for mitigating the negative effects of invasive species and protecting native biodiversity and ecosystem functioning.
Disruption of Native Ecosystems: Invasive species often outcompete native species for resources such as food, water, and habitat. Loss of Native Species: Invasive species can directly impact native species through predation, competition, or by introducing diseases or parasites to which the native species have no natural defenses.
Habitat Degradation: Invasive species can cause significant changes to the physical environment. Altered Fire Regimes: Some invasive plant species are highly flammable and can alter fire regimes in ecosystems. Economic and Agricultural Impacts: Invasive species can have economic consequences by damaging crops, forests, fisheries, and other industries.
To learn more about Ecosystems, here
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Please select the word from the list that best fits the definition
similar structures that related species have inherited from a common ancestor A.Species B.Traits C.DNA D.Homologous E. Branching Tree F. Pedigree
In the average female, the menstrual cycle lasts ___ days
Which meninx surrounding the central nervous system contains blood vessels that nourish the neural tissue?
(4.02 LC)Which of the following products were created through marine biotechnology? Penicillin Plasma television Fluorescent dyes Lithium batteries
Wherever there is water, there is usually mold. From a particular mold Penicillium notatum, the first antibiotic was discovered by Sir Alexander Fleming and was called Penicillin. It is a marine biotechnology where subsequent research on other marine fungi was based.
Answer:
For me the answer was actually Fluorescent dyes and I got a 100%
Explanation:
Chemical compounds from marine organisms can be used for more than medicine. New types of glue have been developed from mussels, heat-resistant enzymes from deep-sea bacteria have industrial applications, and fluorescent compounds from coral and jellyfish can be used commercially as fluorescent dyes.
Choose the appropriate term to fill in the sentence: when mrs. m ate, her intestinal contents became __________ to her blood. her blood became __________ to her intestinal contents.
The three main effects of ____ are pain reduction euphoria and constipation
Answer:
Opiates
Explanation:
Opiates are the chemicals that are obtained by the modification of natural opium components. High amount of opiates in the body can cause death of an individual.
Opiates are used to reduce pain, euphoria , produces the sense of well being and constipation. Regular use of opiates can cause addiction in the organism.
Thus, the answer is opiates.
which one of these is not a reason that cells require the ability to diffuse materials across their membranes?
Which of the numbered features is a lateral moraine?
"we find perennial grasses and flowering plants called forbs in __________ grasslands."
The biodiversity of the Earth’s vegetation makes up its beauty especially the grassland which is covered mostly of trees and grasses. There are a lot of varieties of grassland and among of which is savanna grassland where we can find perennial grasses and the flowering plant called forbs.
Year-old fell on broken glass and required suturing of a laceration. due to age and combative behavior of the patient, the physician utilized moderate sedation while repairing the laceration. the physician gave the child 50 mg of ketamine im. a nurse monitored the patient during the procedure which took 30 minutes. what cpt® code is reported for moderate sedation?
"why is it necessary to phosphorylate a glucose molecule, creating glucose-6-phosphate
It is important because the body needs energy from glucose, glycogen phosphorylate, with the help of an orthophosphate, can cleave away a molecule from the glycogen chain. The cleaved molecule is in the form of glucose-1-phosphate, which can be change into G6P phosphate.
A hypothetical poison prevents nucleoli from carrying out their functions. Which organelles would be affected by this poison? What would the cell be unable to do? Explain.
15 POINTS!
Study the diagram, which represents the general equation for photosynthesis. What do the letters Y and Z represent?
Y - glucose
Z - oxygen
Y - glucose
Z - carbon dioxide
Y - carbon dioxide
Z - hydrogen
Y - carbon dioxide
Z - oxygen
Answer:
The correct answer is Y - glucose, Z - oxygen
Explanation:
In photosynthesis, plants- and also other organisms- take carbon dioxyde (CO₂), water (H₂O) and light (which is absorbed by chlorophyll pigments, those give plants their green color), and they convert inorganic materia in organic materia (chemical energy) in form of sugar. The overall process is described by the following global equation:
6 CO₂ + 6 H₂O → C₆H₁₂O₆ + 6 O₂
carbon dioxide + water → glucose + oxygen
In the diagram, the equation is:
carbon dioxide + water + sunlight → glucose + oxygen
Answer:
The correct answer is A.
Explanation:
Y represents Glucose, a product of cellular respiration. Z represents Oxygen, which is also a product of cellular respiration.
(CO2 + Water + Sunlight = Glucose and Oxygen)
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Consider the diagram. mc004-1.jpg Josiah says this is a phylogenetic tree of the dinosaurs. Maleek says it is a cladogram of the dinosaurs. Who is correct?
Answer:
c
Explanation:
The atp synthase uses this gradient to restore adp back to atp. what is this process called?
ATP synthase uses a proton gradient to restore ADP to ATP in a process known as chemiosmosis, which takes place during oxidative phosphorylation.
Explanation:The process by which ATP synthase uses a proton gradient to restore ADP back to ATP is called chemiosmosis. This occurs during oxidative phosphorylation, a key part of cellular respiration where the energy stored in the electrochemical gradient, developed due to the movement of protons (H+), is utilized. As protons flow through ATP synthase, much like water flowing through a turbine, they provide the energy needed for the enzyme to catalyze the production of ATP from ADP and inorganic phosphate (Pi).
Analyze this case in which the patient record states:40 year old male patient (new) is evaluated for contusion of a finger. the history and examination were problem focused.
Finger contusion can be characterized by bruising of finger, where there is swelling and bleeding under the skin but no broken bones.
1. Diagnosis and Management:- Contusion of finger is diagnosed by the symptoms such as pain, swelling, discoloration, tenderness and difficulty in movement. Sometimes numbness is associated as swelling compresses the nerves in that region.X-ray (If required CT scan0 can be done to confirm the diagnosis and rule out fractures and other serious forms of injuries.
Depending upon the severity, treatment is decided. The contusion is managed with an aim to reduce pain, swelling and restore the movement. The options so as to treat the contusion, based on its severity are as follows
a. Applying Icepacks and keeping the finger propped up above the heart level.
b. Splinting and taping
c. Physiotherapy
d. Ultrasound therapy
e. Surgical treatment is required in case of torn ligaments.
These options of treatment are accompanied with over the counter pain killers and anti inflammatory drugs
The phosphorus-containing head of a phospholipid attracts water and is
The movement of protons (h+) through the atp synthase occurs from ______ to ______ proton concentration.
Which organelle is made of a phospholipid bilayer? A. cell wall B. cytoplasm C. ribosome D. cell membrane
The structure of hair is formed by keratin. Keratin is most likely which of the following polymers?
Answer:
Keratin is a protein.
Explanation:
Keratin is a fibrous protein that has the characteristics of rigid conformation, elasticity and impermeability to water. It has animal origin and is found in the vertebrate epidermis and in some epidermal appendages, such as hair, nails, hooves, feathers and scales. This protein is produced in cells called keratinocytes, which are the most abundant in the human epidermis.
Like any protein, keratin is made up of amino acids. It has a large amount of cysteine residues, which is responsible for 7% to 20% of the total amino acids present in keratin. Note that cysteine is mainly located in the terminal region of the keratin chains.
A doctor prescribes a 500-mg antibiotic tablet to be taken every eight hours. just before each tablet is taken, 20% of the drug remains in the body. (a) how much of the drug is in the body just after the second tablet is taken? after the third tablet?
A doctor prescribes a 500-mg antibiotic tablet to be taken every eight hours. just before each tablet is taken, 20% of the drug remains in the body.
(a) how much of the drug is in the body just after the second tablet is taken?
600 mg
after the third tablet?
720 mg
(a) After the second tablet: 600 mg. After the third tablet: 620 mg.
(b) Equation: [tex]\(Q_{n+1} = 0.2Q_n + 500\)[/tex].
(c) Long-term quantity: 0 mg.
(a) To find the quantity of the drug in the body just after the second tablet is taken, we need to consider the elimination of the drug over time and the intake of the second tablet.
The quantity of the drug remaining in the body after the first tablet is 500mg.
After 8 hours, 80% of the drug is eliminated, leaving [tex]\(20\% = 0.2\)[/tex] of the drug in the body.
Thus, after 8 hours, the quantity of the drug remaining in the body is [tex]\(0.2 \times 500 = 100\)[/tex] mg.
When the second tablet is taken, another 500 mg of the drug is added to the quantity remaining in the body.
So, after the second tablet is taken, the total quantity of the drug in the body is 100 + 500 = 600 mg.
Now, to find the quantity of the drug in the body just after the third tablet is taken, we repeat the process:
After another 8 hours, 80% of the drug is eliminated from the body, leaving 20% = 0.2 of the drug in the body.
Thus, after another 8 hours, the quantity of the drug remaining in the body is [tex]\(0.2 \times 600 = 120\[/tex]) mg.
When the third tablet is taken, another 500 mg of the drug is added to the quantity remaining in the body.
So, after the third tablet is taken, the total quantity of the drug in the body is 120 + 500 = 620 mg.
Therefore, after the second tablet is taken, there are 600 mg of the drug in the body, and after the third tablet is taken, there are 620 mg of the drug in the body.
(b) Let's denote [tex]\(Q_n\)[/tex] as the quantity of the antibiotic in the body just after the nth tablet is taken.
To find an equation expressing [tex]\(Q_{n+1}\)[/tex] in terms of [tex]\(Q_n\)[/tex], we observe that after each tablet is taken, the quantity of the drug in the body increases by 500 mg. Additionally, after each 8 hours, 80% of the remaining drug is eliminated.
So, the equation expressing [tex]\(Q_{n+1}\)[/tex] in terms of [tex]\(Q_n\)[/tex] is:
[tex]\[Q_{n+1} = 0.2 \times Q_n + 500\][/tex]
(c) In the long run, the quantity of the antibiotic in the body will stabilize when the amount of the drug taken in equals the amount eliminated.
Let's denote the long-term quantity of the antibiotic in the body as [tex]\(Q_{\text{long}}\).[/tex]
According to the equation derived in part (b), after each tablet is taken, the quantity of the drug in the body increases by 500 mg. However, after each 8 hours, 80% of the remaining drug is eliminated.
So, in the long run, [tex]\(Q_{\text{long}}\)[/tex] will stabilize when the amount taken equals the amount eliminated:
[tex]\[0.2 \times Q_{\text{long}} + 500 = 500\][/tex]
Solving for [tex]\(Q_{\text{long}}\):[/tex]
[tex]\[0.2 \times Q_{\text{long}} = 0\]\[Q_{\text{long}} = 0\][/tex]
Therefore, in the long run, no quantity of the antibiotic remains in the body.
The complete question is here:
A doctor prescribes a 500 mg antibiotic tablet to be taken every eight hours. It is known that the body eliminates 80% of the drug in eight hours. (a) How much of the drug is in the body just after the second tablet is taken? After the third tablet?
second tablet X mg
third tablet X mg in terms of
(b) If Q, is the quantity of the antibiotic in the body just after the nth tablet is taken, find an equation that expresses Qn + 1 in terms of Qn
(c) What quantity of the antibiotic remains in the body in the long run? mg