Catalase is an enzyme which breaks down hydrogen peroxide into water and oxygen. Hydrogen peroxide is a toxic by-product of metabolism, so it is essential for it to be broken down quickly, or else, it would cause damage to cells. Without the aid of catalase, decomposition would take much longer, thus, would not be fast enough to sustain human life. Some experiments are done to determine the rate of an enzymatic reaction between catalase and peroxides. In decomposition reaction of peroxide by catalase , the easiest molecule to measure would be oxygen as a final product. While certain procedures are applied in determining the amount of oxygen, the techniques of swirling are applied for accuracy of reactions. Swirling is important because it makes it possible for further collisions to take place between the catalase enzyme and the hydrogen peroxide. More collisions mean the reaction is occurring to the fullest achievable extent.
The inflammatory response to corynebacterium diphtheriae infection results in the production of a lesion called a
The nurse is caring for the client who is at risk for lung cancer because of an extremely long history of heavy cigarette smoking. the nurse tells the client to report which frequent early symptom of lung cancer
Hypothesize what potential impact a mutated egfr allele will have on a cell
Mutated EGFR can lead to cancer (especially lung cancer).
A mutation in EGFR is associated with uncontrolled tumor growth, which can accelerate cancer progression.
Epidermal Growth Factor Receptor (EGFR) receptors are found on the surface of tumor cells and their role is to send a growth signal to the nucleus of the cell. Some lung cancer tumors may contain a mutation in their DNA that affects the EGFR. The tumor is said to be "positive for EGFR mutations".
Tumor cells with EGFR mutations are highly sensitive to cancer treatments called "Targeted Therapies" or "EGFR Tyrosine Kinase Inhibitors".
Why is DNA replication necessary before each cell division?
Capillaries are best described as
a. thin walled vessels that convey blood toward the heart.
b. microscopic vessels in which blood exchanges material with the interstitial fluid.
c. thick walled vessels that convey blood away from the heart.
d. thick walled vessels that carry blood rich in oxygen.
e. thin walled vessels that carry blood deficient in oxygen.
Which event marks the end of one menstrual cycle and the beginning of a new cycle?
Answer:
Menstrual flow and ovulation
Explanation:
The menstrual cycle is the hormones regulated the complex process. In this process, endometrium (a thickened lining of uterus wall) ruptures. Rupturing of endometrium results into the menstrual fluid which contains blood, cells from the lining of the uterus and mucus. The flow of menstrual fluid from the vagina is called menstruation. This process is to prepare the woman for expected fertilization.
Menstruation marks the end of one cycle and the release of ova from one of the ovary is beginning of next menstruation that occurs almost 14 days before menstrual flow.
Some lipids are formed when fatty acids are linked to glycerol. these subunits are linked together by .
Lipids are formed when fatty acids are linked to glycerol via a process called esterification. This process forms an ester bond between the fatty acid and glycerol, resulting in a triacylglycerol, or a fat.
Explanation:Lipids are formed when fatty acids are linked to glycerol via a reaction known as esterification. This is a dehydration synthesis reaction (a type of condensation reaction) where water is removed, and the fatty acid is bonded to the glycerol.
This process occurs three times for each glycerol molecule, forming a triacylglycerol, or a fat. Specifically, the bond which links the fatty acid to the glycerol is called an ester bond.
Learn more about Lipids here:
https://brainly.com/question/33447977
#SPJ6
Look at the pea diagram. Some peas are round while other peas are wrinkled.
a. What are the two phenotypes of the peas?
b. How many genotypes do the peas have?
c. What are the two homozygous genotypes?
d. What is the heterozygous genotype?
e. Which pea shape (wrinkled or smooth) is dominant?
f. Which pea shape (wrinkled or smooth) is recessive?
g. What are the two genotypes for the dominant pea shape?
h. What is the minimum number of dominant alleles needed to show the dominant trait?
i. What is the genotype for the recessive pea shape?
j. What is the minimum number of recessive alleles needed to show the recessive trait?
How many muscles does it take to walk?
How would the population dynamics of the warbler species differ from what has been documented by s. sillett and colleagues? explain?
Rod-like structures within skeletal muscle fiber that contain thin and thick filaments organized into sarcomeres are called
In pea plants, the tall-stem allele and the short-stem allele are different forms of the same what'
The nurse working the evening shift is assisting clients in getting ready to go to sleep. a client diagnosed with obsessive-compulsive disorder (ocd) becomes upset and agitated and asks the nurse to sit down and talk. which response by the nurse would be best at this time
How to enter date of birth while checking ibps po result?
Which is more accurate when showing the movement of food through a community- a food chain of food web?
The relatively slow brain waves of a relaxed, awake state are called:
While washing her hair, Olivia noticed that she was losing a lot of hair. She visited a clinic, and the physician reassured her that her hair would grow back. How do you think Olivia’s hair will grow back? The hair will grow back by undergoing regeneration. The hair will grow back by undergoing meiosis. The hair will grow back by undergoing binary fission. The hair will grow back by undergoing mitosis.
The right option is; The hair will grow back by undergoing meiosis.
Meiosis is a type of cell division in which the number of parental chromosome is reduced by half, and there is formation of four haploid daughter cells that are genetically distinct from the parent cell that produced them. Meiosis only occurs when the cell needs to reproduce and it occurs in all eukaryotic, sexually-reproducing animals and plants.
Answer:
the hair will grow back from undergoing mitosis
Explanation:
Objects that identify elements in containers and can be manipulated to move among elements
Humans are the definitive host for __________, which is a type of __________. humans are the definitive host for __________, which is a type of __________. plasmodium; cestode taenia solium; roundworm echinococcus granulosus; tapeworm taenia saginata; tapeworm
A patient who suffered a stroke says that she no longer recognizes herself in a mirror. which brain structure was likely damaged in the stroke?
Answer:
The correct answer will be-right hemisphere
Explanation:
The right hemisphere is one of the two hemisphere of the brain which controls the main functions of the body.
The left hemisphere usually regulates the function of the left hemisphere but it is involved in the major functions like related to the language and self-awareness.
After a stroke caused by the blockage of the blood arteries carrying blood to the brain cause loss of self-awareness. This is caused by the disruption of the sense of self-awareness to the environment psychically and visuospatially.
A multigravida in the active phase of labor says, "i feel all wet. i think i wet myself." what should the nurse do first
Final answer:
The nurse should first assess whether the woman's water has broken. If yes, she should inform the woman, monitor fetal heart rate, and assess labor progress. If no, explore other possible causes and provide reassurance and information on managing the situation.
Explanation:
In the scenario described, the student is a multigravida in the active phase of labor who feels wet, thinking she has wet herself. The nurse should first assess whether the woman's water has broken. The nurse can do this by performing a vaginal examination to check for a rupture of the amniotic sac.
If the nurse finds clear fluid pooling in the vagina or dripping from the cervix, it confirms that the woman's water has broken. The nurse should then inform the woman that her water has broken and ensure that further assessments are carried out, such as monitoring the fetal heart rate and assessing the progress of labor.
If the nurse does not find any evidence of ruptured membranes, it is important to explore other possible causes of the wetness, such as increased vaginal discharge or urine leakage. The nurse should reassure the woman and provide information on managing these situations.
Photosynthesis uses _____ to produce atp nadph and o2
What happens immediately after the chromosomes line up on the cell's equator?
Bodily functions that follow "a law unto itself" are controlled by the involuntary nervous system. this system is also termed __________ and functions to __________.
A woman who has sickle cell anemia passes this disease on to her offspring. This means that the mutation for sickle cell anemia MUST occur in the woman’s
Answer:
Sickle cell anemia is a disease in which the oxygen carrying capacity of the red blood cells is reduced. The RBC change its shape and becomes sickle shapes which reduces its surface area and its carrying capacity also decreases.
Sickle cell anemia is an autosomal recessive pattern, which states that both the copies of gene in the cell have mutation in them.
Both the parents carry one copy of the mutated gene and so not show any signs or symptoms but when the zygote is formed it is affected by this disease.
Approximately 75 percent of the Earth's surface is covered in water. So why, based on the information in the table below, is water considered such a precious resource?
A.
Each year, more freshwater is being trapped in icecaps located at the North and South Poles.
B.
Global warming caused by greenhouse gas emissions will likely cause Earth's oceans to evaporate.
C.
The greenhouse effect is causing most of the world's freshwater to be trapped in the atmosphere.
D.
Only a small fraction of the Earth's water is freshwater available for drinking and irrigation.
Answer:
D.
Only a small fraction of the Earth's water is freshwater available for drinking and irrigation.
Explanation:
Water is considered a precious resources because a small percentage of all the water on earth is considered suitable for domestic and other important uses. Other water forms need to be processed before they can be deemed suitable for use and these processes are time and resource consuming.
The chemical reactions inside living cells represent an organism's ____
a) Homeostasis
b) Evolution
c) Metabolism
d)Photosynthesis
Answer:
c) Metabolism is the correct answer.
Explanation:
The chemical reactions inside living cells represent an organism's (Metabolism).
metabolism is the sum of all biochemical reactions within the body, that gives energy for the vital process and the synthesis of organic substances.
metabolism consists of
catabolism is a destructive type of metabolism, where the breakdown of the complex substance into simpler substances anabolism :synthesizing of new(complex) substances.Your teacher is describing a plant that bears seeds and flowers, has five flower petals, and had seeds that are enclosed by fruits. What kind of plant is he describing ?
Answer:
Angiosperm
Because they are flowering and encased in fruit.
Organs _____.
only exist in animals
are less complex than the tissues which make them
perform functions that tissues cannot carry out on their own
are made of only one type of tissue
Answer:
perform functions that tissues cannot carry out on their own
Explanation:
In the hierarchy of living system organs come after tissues and before organ systems. Hence, organs are complex then tissues and perform functions that tissues wont be able to perform on their own.
A organ is made up of various types of tissues. They can be divided into two categories, main tissue and sporadic tissue. Main tissue or parenchyma is unique to that organ and defines the function of the organ. For example: Cortex and medulla together form the main functional tissue in kidney. Similarly, myocardium is the main tissue of the heart. Sporadic tissue has blood vessels, nerves and connective tissues.
A condition known where kidneys fail to remove blood