Answers: examples of host defence mechanism include: Innate anatomical and physiological barriers, Innate cellular and chemical defenses.
Explanation:
The capability of the human body to resist almost all types of organisms or toxins that tend to damage the tissues and organs is known as IMMUNITY. This host defence mechanism can be classified into INNATE or adaptive immunity.
The immunity that results from general processes, rather than from processes directed at specific disease organisms is called the INNATE IMMUNITY. The anatomical and physiological barriers of the innate immunity provides the first line of defence against pathogens. Examples of these barriers of the innate immunity includes:
--> Destruction of swallowed organisms by the low stomach pH and digestive enzymes
--> The vigorous mucociliary clearance mechanisms of the respiratory airways and lungs.
--> Resistance of the skin to invasion by organisms
While examples of innate cellular and chemical defenses include:
--> Phagocytosis of bacteria and other invaders by white blood cells and cells of the tissue macrophage System
--> lysozymes, a mucolytic polysaccharide that attacks bacteria and cause them to dissolute.
--> basic polypeptides which react and inactivate certain types of gram- positive bacteria
-->natural killer lymphocytes that can recognize and destroy foreign and tumor cells.
Kevelyn dreams that 12 monkeys are dancing in a circle around her while she sits on a stool and eats a banana. This description of Kevelyn’s dream contains _________ content.
A. transference
B. latent
C. lucid
D. manifest
The subconscious psychological meaning of a dream is its latent substance. This symbolically veiled content may be painful or traumatic. Therefore, option (B) is correct.
What is latent content of dream?In Freudian dream analysis, content refers to both the Latent and manifest elements of a dream, or both the overt meaning of the dream and the dream as it is remembered. Dreams represent the uncontrollable mental events that occur during various stages of sleep.
The hidden psychological significance of a dream is its latent content. Because it could be distressing or traumatic, this content frequently makes symbolic appearances in disguise and contains things that are hidden from conscious awareness.
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Which structures in birds and mammals have a similar function?
a. Air sacs and diaphragm
b. Down feathers and underhair
c. Albumen and mammary gland
d. Crop and incisors
Answer:
Air sacs and diaphragm
Explanation:
Explain how biotechnology has used the idea of ‘cut and paste’ when it comes to biotechnology
Answer:
Biotechnology, the use of biology to solve problems and make useful products. The most prominent area of biotechnology is the production of therapeutic proteins and other drugs through genetic engineering.
Explanation:Biotechnology, the use of biology to solve problems and make useful products. The most prominent area of biotechnology is the production of therapeutic proteins and other drugs through genetic engineering.
Biotechnology is a field of engineering that makes use of biological systems, living creatures, or fragments thereof, to develop or produce various goods.
What is biotechnology?Biotechnology is technology that utilizes biological systems, living organisms or parts of this to develop or create different products.
The utilization of yeast (a living organism) to create the intended product is an example of a biotechnology process, as are brewing and baking bread.
Every year, new innovations and products are created in a variety of fields, such as medicine (creation of novel treatments and medications), agriculture (creation of genetically modified crops, biofuels, and biological treatments), or industrial biotechnology (production of chemicals, paper, textiles and food).
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2.4 State two reasons why the fern plants are able to
greater heights than the moss plants.
(2)
Coll
19)what is an underground stem
Answer:
Explanation:
This is because ferns are vascular plants i.e they have vascular tissues which are xylem and phloems which help to conduct water and nutrients while mosses are non vascular plants.
2. Ferns sporophytes are differentiated into true leaves, stems and true roots while mosses lack true roots, stems and leaves.
Underground stems are modified part of plants that are derived from stem tissues which grow under the ground. Underground stems grow beneath the soil. Examples include Rhizomes, ginger, tubers e t.c.
When was the structure and function of DNA discovered?
A. 1944
B. 1949
C. 1953
D. 1961
Answer:
C : 1953
Explanation:
The discovery in 1953 of the double helix, the twisted-ladder structure of deoxyribonucleic acid (DNA), by James Watson and Francis Crick marked a milestone in the history of science.
Answer:
c. 1953
On February 28, 1953, Cambridge University scientists James D. Watson and Francis H.C. Crick announce that they have determined the double-helix structure of DNA, the molecule containing human genes.
water in plants can be lost through what
Answer:
transpirationExplanation:
Transpiration is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems and flowers. Water is necessary for plants but only a small amount of water taken up by the roots is used for growth and metabolism. The remaining 97–99.5% is lost by transpiration and guttation.
I hope my answer will help you keep safehow does calcitonin hormone decrease the concentrations of calcium in the blood
Answer:
It inhibits the activity of osteoclasts, which are the cells responsible for breaking down bone.
Answer:
Calcitonin reduces calcium levels in the blood by two main mechanisms: It inhibits the activity of osteoclasts, which are the cells responsible for breaking down bone.
Urgent. will mark brainiest. Explain what happens in the nervous system when your finger is hurt. Please actually answer!
A post- doctorate position is most likely to be held by Oa geriatric allergist an allergist a pediatric immunologist. A scientific research immunologist .
Answer:
A scientific research immunologist
Explanation:
A postdoctoral (commonly called postdoc) position is a temporary working position assigned by a particular institution/government agency to investigate questions referred to a particular research field/discipline (e.g., economy, molecular biology, immunology, politics, etc). In general, a postdoc is a 2-year position obtained after Ph.D. (i.e., Doctor of Philosophy) completion. This short-term research position is useful for professionals who require further training in a particular field/discipline, giving the individual more independence than in a Ph.D., which allows the development of technical skills and increases his/her interest in a particular research area.
Answer:
it's A: Protecting the body, excreting wastes, sensing temperature changes, and generating vitamins.
Explanation:
edge 2021
What are three ways radioactive dating is or was used in the real world?
Together with stratigraphic principles, radiometric dating methods are used in geochronology to establish the geologic time scale. Among the best-known techniques are radiocarbon dating, potassium–argon dating and uranium–lead dating.
Answer:
Over time, carbon-14 decays in predictable ways. And with the help of radiocarbon dating, researchers can use that decay as a kind of clock that allows them to peer into the past
Explanation:
kinda easy ig idfk
What are Life processes?
Answer:
the process which includes as growth, differentiation, respiration, digestion, and excretion during their life time is life process.
Answer:
Growth, differentiation, respiration, digestion, and excretion are life processes.
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Chromosomes are
A: DNA strands that become visible during cell division
B: the control centers of cells
C: the thick, fluid material surrounding the nucleus
D: the basic units of structure in living things
Answer:
A
Explanation:
Each chromosome contains a single double-stranded piece of DNA along with the aforementioned packaging proteins. Chromatin condensation begins during prophase and chromosomes become visible. Chromosomes remain condensed throughout the various stages of mitosis
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what are 8 possible blood types
Answer:
A+ ,A-,B+,B-,O+,O-,AB+,AB-
What group makes up one type of organism
Answer:
Unicellular organism
Explanation:
it is made up of only one cell carrying out the functions needed by the organism.
Answer:
An individual is one organism and is also one type of organism (eg. human, cat, moose, palm tree, gray whale, tapeworm, or cow in our example.) The type of organism is referred to as a "species"
Explanation:
Which two body systems alert the young bird to the danger and help produce the vomit it uses as a defence?
The nervous system is the major controlling system, thus, the Nervous system help produce the vomit it uses as a defence.
What are the main functions of the nervous system?The main functions of the nervous system are:
Managing of body's inner environment to support 'homeostasis' An example of this is the ordinance of body temperature.Programming of spinal cord reflexes. Memory and learning.Voluntary control of motion.Thus, the option nervous system is correct, as the nervous system is the major controlling system whereas others are not.
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Which part of the cell is the site of chemical reactions responsible for metabolism
a, Ribosome
b,Cytoplasm
c,Golgi Apparatus
d,Endoplasmic reticulum
Answer:
None of those... the Mitochondria
Explanation:
what factors are needed to create a storm?
Answer:
For a storm to be created, it needs warm sea surface temperatures, light winds, and rotation or spin. If any of the following does not happen, the storm will either weaken or decay.
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After Elijah dropped a pass in an important football game, he became depressed and vowed to quit the team because of his athletic incompetence. His counselor challenged his illogical reasoning and pointed out that Elijah’ “incompetence” had earned him a athletic scholarship. The psychologist’s response was most typical of __________________ therapy.
A. Behavior
B. person-centered
C. psychoanalytic
D. rational-emotive
Answer:
D. rational-emotive
After Elijah dropped a pass in a crucial football game, he became depressed and believed that it was due to his incompetence; however, a counselor challenged his illogical reasoning, and this is a rational-emotive therapy that is present in Option D.
What is the significance of the therapy?There are various types of therapy, such as psychological therapy, in which the patient with mental health problems can be evaluated by a counselor, and there are separate sessions depending on the severity of the issue, and the counselor helps the patient overcome such pain and depression to lead a normal and healthy life.
Hence, after Elijah dropped a pass in a crucial football game, he became depressed and believed that it was due to his incompetence; however, a counselor challenged his illogical reasoning, and this is a rational-emotive therapy that is present in Option D.
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A ________
is a system formed by the interaction of a community of organisms with
their physical environment
A.Biome
B.Ecosystem
C.Habitat
D.Campground
B. Ecosystem
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Can someone help me with this question
True or false: Predators of one species can never be prey to another species.
A. True
B. False
The American Black Bear lives in many parts of North America. A black bear in Colorado might hibernate for three or more months in the winter, while a black bear in Florida may hibernate for only a few weeks, or not at all. Which statement best explain why?
A. Florida black bears are a different species from Colorado black bears.
B. Florida black bears hibernate less because their climate is not as cold.
C. Florida black bears have less territory and cannot risk a long hibernation.
D. Florida black bears eat different food from bears in Colorado and need less rest.
in
18
An unborn child receives
antibodies from its mum before
.birth
What type of immunity is this an
?example of
natural active immunity
artificial active immunity
natural passive immunity
artificial passive immunity
Answer:
d...........................
Blood flow causes vibrations in the heart chambers and valves and produces sounds that can be heard with a stethoscope. Evaluate
which of these does NOT necessarily contribute to the sounds detected by the stethoscope as blood passes through the heart.
A) iron level is the blood
B) velocity of the blood during motion
C) viscosity of the blood as it moves through the heart
D) density of the blood as it is pumped through the heart
Answer:A. iron level of the blood
Explanation:
Answer:
A. iron level of the blood
Explanation:
All of the other properties are physical properties that can be detected by vibrations picked up by the stethoscope. The chemical property, iron level, will not necessarily be detected by the stethoscope but may contribute to poor cardiac health.
what is the process when animals excrete water from their pores
pls help me I need help with this science answer
Answer:
I believe its called Excretion!
Explanation:
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What do carbohydrases break down?
Answer:
Explanation:
Carbohydrase enzymes break down starch into sugars. The saliva in your mouth contains amylase, which is another starch digesting enzyme. If you chew a piece of bread for long enough, the starch it contains is digested to sugar, and it begins to taste sweet.
During the Dutch Fork vs Irmo softball game, Bobby tore a connective tissue that attaches his thigh bone to his hip-bone. Which tissue was affected?
i need help please & thank you!!
What are the types of vascular plants? How do they reproduce?
crytogams - this type of vascular plant reproduces by spore.
phanerogams - this type of vascular plant reproduces from the seeds, hence also named as seed plants.
Angiosperms - this type of vascular plant reproduces flowers and fruits
Gymnosperms - this type of vascular plant reproduces cones and seeds only.
Answer:
Vascular plants are plants that have roots, stems, and leaves. They have a vascular system that is responsible for the distribution of water and nutrients. This system is made up of the xylem (responsible for distributing the raw sap to the leaves) and the phloem (responsible for transporting the processed sap to the rest of the plant). Within this group we have: pteridophytes (Many plants do not produce flowers. They are also known as cryptogams. They reproduce through spores) and spermatophytes (they are vascular plants that produce seeds and, therefore, are the most evolved).
Explanation:
Vascular plants are those that have a “corm” made up of root and stem (stem and leaves), as well as a conduction system made up of xylem and phloem for transporting water and photosynthates. Pteridophytes are vascular plants that do not produce seeds. Within the vascular plants they are the simplest plants at a structural level, since they do not have the complexity linked to the production of these seeds, which are what allow the sexual reproduction of plants. Spermatophytes are the vascular plants that produce seeds. These seeds generated by the flowers, when they fall to the ground after dispersing, germinate and give rise to a new plant. This presence of seeds that can be spread by the wind or by animals is what has allowed these plant species to colonize the world.
What are the reactants and what are the products of cellular respiration?
Reactants:
Products:
Answer:
Reactants: Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP; waste products include carbon dioxide and water.
Products: Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.
Explanation:
I hope this helped you ;)
Answer:
Reactants: Oxygen and glucose are both reactants in the process of cellular respiration. The main product of cellular respiration is ATP; waste products include carbon dioxide and water.
Products: Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.
Explanation: