The ________ theory describes the origin of the planets as having been formed by accretion of small particles into progressively larger and larger bodies.
Answer:
big bang
Explanation:
In which phase of the cell cycle are cells most often found?
Some materials can move across the cell membrane against a concentration gradient by what
Which is an example of acquisition of natural passive immunity?
What kind of tissue is the precursor of long bones in the fetal skeleton?
A direct indication that the white blood cells of the body are functioning would be
The immune system of a person is capable of fighting with infectious microorganisms and can easily protect the body from infectious diseases. This condition indicates that the white blood cells are functioning properly.
Further Explanation:
The foreign particles can be either microbial pathogens or dust particles and pollens. Depending on the type of foreign body, the innate immune system functions. The physical barriers like skin, mucous membranes, and lungs help in preventing foreign particle entry. The pathogens are removed by the action of immune cells called white blood cells (monocytes, macrophages, dendritic cells, mast cells, and polymorphonuclear leukocytes). In a healthy individual, the total WBC (white blood cell) count ranges between 4,500 to 11,000/. When an infection is caused, or the person has some allergy, this count is increased.
The effective immune system is fighting with any microorganism or damage that can efficiently protect the body by releasing certain chemicals. The damaged host cells also release certain chemicals (vasoactive factors) like histamine, prostaglandins, and bradykinin. This causes the movement of the fluid in the extracellular spaces. All these factors cause an increase in blood flow and fluid retention (that cause edema). The increased vascular permeability helps the WBCs to reach that area easily.The neutrophils that are delivered to the inflammation site phagocytize microbes and kill it.
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Answer Details:
Grade: High School
Subjects: Biology
Chapter: Immunology
Keywords:
White blood cell, immune system, infection, neutrophils, lungs, foreign particle, damage, kill, phagocytize, histamine, prostaglandins.
In what ways do enzymes control the cell cycle?
Select the correct answer.
What hormonal change occurs after fertilization that causes the endometrial lining to remain intact so that the fertilized egg can successfully implant in it?
A. The pituitary gland secretes oxytocin, which maintains the endometrial lining.
B. The pituitary gland secretes follicle stimulating hormone, which acts on the follicles and stimulates them to produce progesterone.
C. The hypothalamus secretes gonadotropin releasing hormone, which maintains the endometrial lining.
D. The developing embryo secretes human chorionic gonadotropin, which prevents the corpus luteum from disintegrating.
E. The developing embryo takes over the production of progesterone after the breakdown of the corpus luteum to maintain the endometrial lining.
Answer:
B. The pituitary gland secretes follicle stimulating hormone, which acts on the follicles and stimulates them to produce progesterone.
Explanation:
A deficiency disease that illustrates the effect of integumentary system function on the structure of the skeletal system is
A deficiency disease that illustrates the effect of integumentary system function on the structure of the skeletal system is
Rickets is the disease that illustrates the effect of integumentary system function on the structure of the skeletal system.It usually occur due to the lack of Vitamin D or calciumIt can be caused by a genetic defect or another health condition.What is rickets?It is the softening and weakening of bones in children due to the deficiency of Vitamin D.It affect the bone development in children.It cause bone pain, poor growth and soft weak bones that can lead to bone deformities.
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A client with cancer is being treated on the oncology unit for bilateral breast cancer. the client is undergoing chemotherapy. the nurse notes the client's serum calcium concentration is 12.3 mg/dl (3.08 mmol/l). given this laboratory finding, the nurse should suspect that the
A serum calcium concentration of this range only means that the cancer must be suspected to be a malignant one. So the nurse should suspect that the malignancy of the cancer is what is causing the electrolyte imbalance of the patient.
A 26-year-old client who abuses heroin states to the nurse, "i have been using more heroin lately. i told my provider about it and they said i need more and more heroin to feel the effect i want
What might cause a virus in the lysogenic cycle to suddenly enter the lytic cycle?
Answer:
The correct answer would be the "stressful conditions of the host cell."
In the lysogenic cycle, the viral genome gets attached and integrated into host cell chromosomes and the virus becomes dormant and is termed as a prophage.
However, environmental stress to the host cell such as exposure to a toxic substance, starvation et cetera may cause the prophage to be excised which then enters the lytic cycle.
What part of the cell is an organelle that converts glucose energy from foods to usable energy for us?
A patient presents with muscle twitching and cramping. on examination, the health care provider diagnoses the patient with calcium deficiency. which dietary instructions should the nurse give to this patient?
what kind of crystal is halite crystal (rock salt)?
The stomach select one:
a. secretes lipases that complete fat digestion.
b. serves as a temporary storage site
c. manufactures bile.
d. contents are highly alkaline.
The current rapid loss of species is considered by many scientists to be another mass extinction. what may be causing this increase in extinction rate, beyond background extinction?
Which of the following organelles is found in both plant and animal cells?
a.cell wall
b.chloroplast
c.central vacuole
d. mitochondrium
"where does the bond form that binds one strand of dna to its other strand"
Which of these connections are used for camcorders, dvd players, and gaming consoles?
The FireWiire is connection used for camcorders, DVD players, and gaming consoles. The standard that defines the FireWire connection is IEEE 1394. IT is an interface standard for a serial bus for high-speed communications and isochronous real-time data transfer.
Final answer:
Camcorders, DVD players, and gaming consoles often use HDMI for modern devices, with Component Video, Composite Video, and S-Video being options for older devices.
Explanation:
The connections that are typically used for devices such as camcorders, DVD players, and gaming consoles include HDMI (High-Definition Multimedia Interface), Component Video (YPbPr), Composite Video (RCA), and S-Video. However, the most common connection used in modern devices is HDMI, which provides high-quality digital video and audio through a single cable. Older devices or those requiring analog input might use Component, Composite, or S-Video connections. It is important to select the correct type of cable to match the ports available on both the device and the display (TV or monitor) to ensure compatibility and the best possible quality of the media.
Which salivary gland, located ventral to the ear, produces nearly half of the total volume of saliva produced?
A bacterium lacking the receptor for responding to quorum-sensing signals would be unable to
Ging, smaller-breed dogs are more likely to develop ______ than either larger-breed dogs or aging cats
The chronic valvular disease may affect many breeds but is the most common in smaller breeds. Many aged dogs develop some valvular degeneration, but it is mostly on smaller breeds that heart symptoms come up. This is a degeneration most likely connected to genetic factors.
How would frigid antarctic water affect the ice fish's need for oxygen?
Why is the catalytic activity of enzymes essential to ensure and regulate cellular metabolism?
Explain how both bottom-up and top-down processing are involved in the "crystal running on the beach" example.
Which of these is the best model of a prokaryotic cell?
Which muscle bends the lower arm toward the upper arm?
Answer:
the smooth muscle
Explanation:
The city has applied for a government grant to build a new wastewater treatment facility. To qualify for the grant, the city must prove it has accounted for all potential dangers to animal populations surrounding the plant. What environmental parameters should be monitored to ensure the plant is not adversely affecting the animal species living near the plant?
The environmental parameters that should be monitored to ensure the plant is not adversely affecting the animal species living near the plant is the gradual migrating of bird populations and the carry capacities of local animal species.
Monitoring of environmental parameters would allows the city to know if the plant set up is affecting the population of the animals in the area.
In conclusion, the monitored parameters would be gradual migrating of bird populations and the carry capacities of local animal species.
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A mutation has occurred that has made uvrd non-functional. what result will this have on damaged dna?