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METABOLISM - In an organism, the metabolism converts food into energy. Another important thing it does is it gives you the energy you need every day in life.
CATABOLISM - This is the break down of molecules that are very small. Cells need nutrients because inside them, they contain energy. Catabolic reactions release the energy and then makes all the different substances available.
ANABOLISM - This is the building of organic compounds. Complex molecules are synthesized from molecules that are way more basic.
match each description to the appropriate biome
Answer:
desert
taiga
tropical savanna
tundra
tropical rainforest
Explanation:
1. Desert
2. Tundra
3.Tropical savanna
4. Taiga
5. Tropical rainforest
What are the different types of biomes?Tropical Rainforests: These locations (typically around the equator) receive year-round rain, making them lush with tropical plants, trees, rivers, streams, and rich, fertile soil.Temperate Forests: Unlike tropical rainforests, temperate forests have four distinct seasons and many evergreen and deciduous trees, which shed their leaves in the fall and winter.Taiga: Boreal forests are another name for taiga. The taiga, the largest of the seven land biomes, is dominated by conifers such as fir, pine, and cedar, which have needle-shaped leaves.Deserts: are known for their hot, dry summers and very cold winters. Because most deserts receive minimal rainfall, certain plants have developed to store water in order to flourish.Savanna: Unlike grasslands, savannas get enough rain to support trees in clusters or strewn throughout the landscape. Tundra: In the summer, large swathes of territory characterized by flat, frigid plains support short grasses, plants, and green moss.learn more of biomes here:
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What can increase/decrease the velocity of blood flow?
Answer:
you can read the article
Answer:
The total cross-sectional area of the blood vessels.
Explanation:
The total cross-sectional area of the blood vessels can increase/decrease the velocity of blood flow.
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Do small cells have a large surface area
Answer:
Yes
Explanation:
Small cells function more effectively because they have a larger surface area to volume ratio than do large cells which have smaller surface area to volume ratio.
List 2 types of bone tissue.
Answer:
Cortical Bone and Cancellous Bone
Explanation:
They're both bone tissue.
True or False. Helper T cells secrete chemicals known as cytokines which cause proliferation of B cells into antibody-secreting plasma cells and memory B cells.
Answer:
True
Explanation:
There are several types of cytokines used in cell signaling; interferons, interleukins, tumor necrotic factor, and chemokines. T helper cells mainly produce interleukins. When activated by Antigen-Presenting-cells, t-helper cells produce interleukins that activate B cells and is significant in their proliferation during an infection.
37) The integrating center for neural control of blood pressure resides in theA) medulla oblongata.B) cerebellum.C) pons variolli.D) hypothalamus.E) cerebrum.
Answer:
Medulla oblongata
Explanation:
Medulla oblongata is found at the lower half of the brainstem continuous with the spinal cord. The medulla oblongata controls the center of vomiting, vasomotor centers for regulating heart rate, cardiac, respiratory and blood pressure. Furthermore, Medulla oblongata connects the higher levels of the brain to the spinal cord and also controls autonomic functions.
Answer:
The Medulla Oblongata
Explanation:
The Medulla has two regions which control heart beat rate ie the *Cardiac inhibitory center* which reduces the heart rate and the *Cardiac accelerator Center* which increases the heart rate thus having overall effect on the blood pressure.
True of False: Hemoglobin releases the same amount of oxygen to all the tissues regardless of variations in their metabolic rate.
Answer: False
Explanation:
Hemoglobin can be defined as red protein that transports oxygen to various parts of the body according to its need.
It does not transports the same amount of oxygen to all the tissues. Some tissues of the body might require more more oxygen and some cells might require less amount of oxygen.
It depends on the state of activity. It transports more oxygen to the tissue that require it the most.
Example: The skeletal muscles of the body require more oxygen and it can be more than 80% .
Hence, the given statement is false and hemoglobin does not releases the same amount of oxygen to each and every tissue of the body.
The amount of oxygen hemoglobin releases varies with the metabolic rates of tissues. High metabolic activity tissues receive more oxygen—as more oxygen molecules dissociate from the hemoglobin—than the less active ones.
Explanation:The statement that Hemoglobin releases the same amount of oxygen to all the tissues regardless of variations in their metabolic rate is False. The oxygen-hemoglobin saturation/dissociation curve mechanisms regulate the amount of oxygen delivered to different tissues. Highly active tissues have high metabolic rates and therefore require more oxygen. Oxygen molecules dissociate from hemoglobin and enter these tissues due to the high difference in the partial pressure of oxygen between the tissues and the blood in the capillaries. Conversely, less active tissues like adipose tissues, which have lower metabolic rates, consume less oxygen. Hence, the partial pressure of oxygen within such tissues remains relatively high leading to fewer oxygen molecules dissociating from hemoglobin and entering the tissue interstitial fluid. Therefore, the amount of oxygen hemoglobin releases to tissues varies based on their metabolic rates.
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The __________ lineage of cells is mostly innate in function while the __________ is mostly adaptive. (though there is, of course, overlap in function).
a) myeloid; lymphoid
b) lymphoid; myeloid
c) hematopoietic; lymphatic
d) mesenchymal; hematopoietic
Answer:
d) mesenchymal; hematopoietic
Explanation:
The mesenchymal lineage of cells is mostly innate in function while the hematopoietic is mostly adaptive. (though there is, of course, overlap in function).
The cells of the macula densa and the juxtaglomerular cells form the?
A) renal corpuscle
B) afferent arteriole
C) nephron loop (loop of Henle)
D) filtration membrane
E) juxtaglomerular complex
Answer:
E. juxtaglomerular complex
Explanation:
Macula densa cells are the columnar tubule cells. They are present in the wall of afferent arterioles. The modified fibers of smooth muscles present in the lining of the afferent arteriole are called juxtaglomerular cells.
The juxtaglomerular cells and macula densa cells together make the juxtaglomerular apparatus, also called juxtaglomerular complex. The function of the juxtaglomerular apparatus is to maintain the blood pressure of kidneys.
Answer:
The correct answer is E) juxtaglomerular complex
Explanation:
The smooth muscle cells of both the afferent and efferent arterioles are swollen and contain dark granules. These cells are called Juxtaglomerular cells. These cells secret Renin which convert angiotensinogen into angiotensin.
The epithelial cells of the distal convoluted tubules that comes in contact with the afferent and efferent arterioles are more dense than the other tubular cells and are collectively called muscula densa. The cells of the mascula densa may function as chemoreceptors; feeding information to the juxtaglomerular cells. The juxtaglomerular cells and macula densa together form juxtaglomerular complex.
These are all hypothalamic hormones except
a. thyrotropin releasing hormone (TRH)
b. antidluretic hormone (ADH)
c. luteinizing hormone (LH)
d. prolactin-inhibiting hormone (PIH)
Answer:
The correct answer is luteinizing hormone.
Explanation:
Hypothalamus has two sets of nerve cells that produce hormones. One set sends the hormones that are anti-diuretic hormone and oxytocin. ADH regulates or water in the bloodstream by reabsorption of water at the kidney and oxytocin helps in pregnancy and breastfeeding.
The other set produces hormones growth regulating, stress releasing and stimulating and inhibiting hormones are dopamine, corticotrophin-releasing hormone, growth hormone-releasing hormone, gonadotropin-releasing hormone, somatostatin, and thyrotropin-releasing hormone.
Luteinizing hormone is secreted by the pituitary gland. It is one of the main hormones that control the reproductive system.
Thus, the correct answer is luteinizing hormone.
Kussmaul respirations are an indication that the body is
Answer:
Kussmaul respirations indicates the condition of acidosis and diabtetes ketoacidosis
Explanation:
Kussmaul respiration refers to the labored and deep breathing pattern. Adolph kussmaul introduced the term Kussmaul respiration.
This respiration refers to the form of hyperventilation in which the amount of carbon dioxide is decreased in the blood. The metabolic acidosis alters the normal pattern of breathing and results in rapid and shallow breathing. The Kussmaul respiration is most common in ketoacidosis.
Kussmaul respirations indicate the body's attempt to compensate for metabolic acidosis by hyperventilating to expel carbon dioxide and reduce acidity.
Explanation:Kussmaul respirations are a type of hyperventilation that is characteristically deep and labored. They are an indication that the body is compensating for metabolic acidosis, particularly when associated with diabetic ketoacidosis. In metabolic acidosis, the blood pH is low due to an excess of acid or a deficiency of bicarbonate. Kussmaul respirations occur as a respiratory compensation mechanism where the body attempts to correct this imbalance by exhaling more carbon dioxide (CO2), which is an acid when dissolved in the blood.
The increased respiratory rate and depth result from the body's need to lower blood acidity by releasing CO2. This compensatory mechanism can be observed in several conditions that cause metabolic acidosis, such as renal failure, and is often a serious sign that requires medical attention.
The molecule that is produced by myeloperoxidase in neutrophils is essentially the same as the active ingredient in bleach. This molecule is:
Question 17 options:
A)
hydrogen peroxide
B)
nitric oxide
C)
hypochlorous acid/hypochlorite
D)
superoxide anion
Answer:
hypochlorous acid/hypochlorite
Explanation:
Neutrophil is a type of white blood cell that provide immunity against the pathogens. Neutrophlis can activate the myeloperoxidase enzyme during microbial infection.
Myeloperoxidase enzyme is coded by MPO gene in humans. This enzymes produces the hypochlorous acid/hypochlorite acid from hydrogen peroxide and carries out anti microbial function.
Thus, the correct answer is option (C).
Mutations in DNA include deletions and insertions. These types of mutations:
A) Result in different amino acids to be read due to frame shifts
B) Result in segments of DNA being translocated in the genome
C) Increase the frequency of polyploidy
D) Always result in disease or harmful effects
e) All of these
Answer:
(A). Result in different amino acids to be read due to frame shifts
Explanation:
Insertion or deletion mutations (or Indel mutations) can be defined as mutations in DNA due to insertion (addition) or deletion of nucleotide bases in DNA.
These mutations lead to change in reading frames (sequence of codons), which leads to formation of protein having completely different amino acid sequence. Hence, these mutations are also cause frameshift mutations.
This is due due to triplet nature of genetic codes as insertion or deletion of one or more bases (but not three) would change change in codon sequence and mutated sequence can form a non-functional or truncated protein.
Thus, the correct answer is option (A).
Which two regions of the brain control respiration
a. Hypothalamus
b. Pons
c. Medulla oblongata
d. A and b
e. B and c
The medulla oblongata and the pons are involved in the regulation of the ventilatory pattern of respiration. So the answer is E.
Children's long bones have growth plates called?
Answer:
The growth plate, also known as the epiphyseal plate
Explanation:
or physis, is the area of growing tissue near the ends of the long bones in children and adolescents. Each long bone has at least two growth plates; one at each end
Which of the following CORRECTLY describes the flow of lymph?
(a) Subclavian vein, Collecting duct, Lymphatic trunk, Lymphatic vessel, Lymphatic capillary
(b) Lymphatic capillary, Lymphatic vessel, Lymphatic trunk, Collecting duct, Subclavian vein
(c) Lymphatic vessel, Lymphatic capillary, Subclavian vein, Collecting duct, Lymphatic trunk
(d) Collecting duct, Lymphatic trunk, Lymphatic vessel, Lymphatic capillary, Subclavian vein
Answer:
The correct answer is option b.
Explanation:
The lymphatic pathway is a circuit where the lymphatic fluid is towards subclavian vein at the base of the neck. It is an open circulation pathway.
Body tissues have capillaries that reabsorb extra tissue fluid which is comes from blood plasma. Tissue fluid is move from lymphatic capillaries to lymphatic vessels, where lymph nodes filter the lymph.
It moves from lymphatic vessels into lymphatic trunks. Finally, it enters in collecting ducts and disposed into the subclavian veins at the base of the neck.
Thus, the correct answer is option b.
The correct order describing the flow of lymph is from the Lymphatic capillary, to the Lymphatic vessel, then to the Lymphatic trunk, Collecting duct, and finally the Subclavian vein.
Explanation:The flow of lymph in the body typically follows a specific pathway. As per the options provided, a correct representation of this lymphatic flow would be: (b) Lymphatic capillary, Lymphatic vessel, Lymphatic trunk, Collecting duct, Subclavian vein. The lymph fluid first enters small, blind-ended lymphatic capillaries. These capillaries then unite to form larger lymphatic vessels, which deliver lymph into the larger lymphatic trunks. The lymphatic trunks drain into two main collecting ducts, the thoracic duct and the right lymphatic duct, which in turn empty their contents into the subclavian veins, thus returning the lymph back into the circulatory system.
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Nerve impulses from _________ will result in inspiration.
A. the ventral respiratory group
B. the chemoreceptor center
C. Broca's center
D. the preoptic nucleus of the hypothalamus
Answer:
the ventral respiratory group
Explanation:
The respiratory centers are present in the brain stem. Five major respiratory group are Dorsal respiratory group, Ventral respiratory group, Pontine respiratory group, Pneumotaxic center and Apneustic center.
Ventral respiratory group controls the process of respiration. The neurons of ventral respiratory group become active during forceful breathing and may result in inspiration.
Thus, the correct answer is option (A).
Answer:
A. the ventral respiratory group
Explanation:
Nerve impulses from the ventral respiratory group will result in inspiration.
The ventral respiratory group is a column of respiratory neurons divided into four subgroups.
In 1994, telomerase activity was discovered in human cancer cell lines. Although telomerase activity is rarely present in human somatic tissue, this discovery indicated that humans do contain the genes for telomerase proteins and telomerase RNA. Since inappropriate activation of telomerase may contribute to cancer, why do you think the genes coding for this enzyme have been maintained in the human genome throughout evolution?
Answer:
oh yeah kooo Koo Koo koooo
Telomerase is crucial for cell division and immortality in specific cells. Its presence in the human genome is supported by its roles in cell proliferation, regeneration, and combating age-related diseases and cancer.
Telomerase is an enzyme responsible for maintaining and elongating telomeres, critical for cell division and immortality in certain cells.
The presence of telomerase genes in the human genome throughout evolution is thought to be maintained due to its role in cell proliferation, regeneration, and potential implications in age-related diseases and cancer.
While inappropriate telomerase activation can contribute to cancer, its essential function in certain cells for telomere length maintenance and cellular immortality justifies its presence in the human genome.
On which bone does Zygomatic Process occurs?
Answer:
Zygomatic Process occurs on temporal bone.
Explanation:
Cheek bone is formed by the zygomatic process. Zygomatic process occurs anteriorly in front of mandibular fossa and posteriorly by external acoustic measles muscle.
Temporal bone is involved in the zygomatic process. The temporal bone extends towards the sides of the skull and lies over the opening of ear. The jugal point is present on the upper side of zygomatic arch.
Answer:
Temporal bone.
Explanation:
On the temporal bone, the Zygomatic Process occurs.
Which of these statements is true?
A. The left coronary artery is a branch of the left pulmonary vein.
B. The coronary sinus returns blood to the left atrium.
C. The coronary arteries arise from the pulmonary trunk.
D. The great cardiac vein collects blood from the anterior surface of the heart.
E. The pulmonary arteries carry blood to the left atrium
As per the choice of questions the great
The Conroy vein or the great cardiac vein is responsible for draining the deoxygenated blood from the cardiac chambers. This vein consists of metabolic wastes. The great cardiac vein receives tributary from the left ventricle ad atrium. The stern costal surface of the heart is convex form.Hence the correct option is D.
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The I band contains only _______ filaments.
Answer: Thick filaments
Explanation:
Answer:
Thin
Explanation:
The I band contains only thin filaments. :)
It extends the vertebral column
a. Erector spinae
b. Vastus lateralis
Answer:
The Erector Spinae
Explanation:
MHC class II will interact with a TCR and
Question 20 options:
A)
CD8 on the surface of cytotoxic T-cells
B)
CD4 on the surface of cytotoxic T-cells
C)
CD4 on the surface of helper T-cells
D)
CD8 on the surface of helper T-cells
Answer:
CD4 on the surface of helper T-cells.
Explanation:
MHC class II ( major histocompatibility complex) molecules are processed from the exogenous source. The presentation of antigen on cells are important for the adaptive immune response.
MHC class II interact with CD 4 present on the surface of T helper cells. This interaction is important for the generation of an immune response. Helper T cells can release cytokines and can perform phagocytosis.
Thus, the correct answer is option (C).
What is the function of the epiglottis?
Epiglottis is a small, movable "lid" which is present just above the larynx which prevent food and drink from entering the windpipe.
It allows air to pass into the larynx and lungs.
What is epiglottis?Epiglottis is present just above the larynx which at rest allow passage of air to into larynx and lungs.
It is a movable lid that protect the air passage.
When a person swallows the epiglottis folds backward to covet the entrance of the larynx so that food and drink can not enter the air passage.
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During swallowing, the epiglottis, a leaf-shaped piece of cartilage, covers the trachea to keep food and liquids out. It assumes a fundamental part in keeping up with the aviation route clear.
It is a piece of the larynx and capabilities to shield the windpipe from suctioned food. At the point when you swallow, the retrogressive movement of the tongue powers the epiglottis to close over the entry of the larynx, actually keeping food and fluids from entering the respiratory parcel. An in-depth look at how the epiglottis works is provided below: After gulping, the tongue pushes the food towards the pharynx.The pharynx and larynx move up, permitting the epiglottis to swing lower and cover the trachea.By covering the windpipe, the epiglottis redirects food and fluids into the throat, the right pathway to the stomach. On the off chance that any food figures out how to move toward the windpipe, it disturbs the larynx, setting off areas of strength for a reflex to remove the material, in this manner safeguarding the lungs.During the _______ phase, the muscle is returning to resting length.
Answer:
The correct answer is: Eccentric phase.
When talking about movement, we are talking about the activation of muscle fibers in order for this process to happen. In order for this to happen, motor neurons must activate the phases of muscle excitation, contraction and relaxation, so that the sarcomeres, and thus the fibers, can generate movement.
In essence, there are three stages, or phases, to complete muscle movement: the concentric phase, which is when the muscle fibers are excited and begin the process of contraction. This means the muscle fibers will contract and generate movement, generating a shortening. Then we have the isometric stage, a moment in which there is no longer any more shortening of the muscle fibers, so basically, the movement is held and there is no further contraction, but neither is there relaxation of the muscle fibers. Finally, we have the eccentric phase. This phase is characterized precisely because it is the moment when the muscles begin to return to their resting position.
There are ___________ pair of true ribs.
Answer:
7
Explanation:
There are 12 total pairs of ribs. 1-7 are attached directly to the sternum by costal cartilages, making them true pairs. 8-10 are fake pairs, which means they're attached indirectly to the sternum. And 11 and 12 and free floating ribs, meaning they aren't attached.
An individual is infected with a pathogen that absorbs nutrients from its environment. In which category does this pathogen belong?
Answer: Fungi.
Explanation:
If a person is suffering from pathogen that derives nutrition from its environment then the pathogen belongs to kingdom fungi.
In case of fungal infections, fungus release enzyme out of their body and performs extracellular digestion and absorb nutrition from their environment.
As they do not have stomach, they need to digest the food before they can pass through the cell wall into hyphae.
Such kind of pathogens are Fungi.
Evolutionary trends between species are often studied in which discipline?
a. Comparative anatomy
b. Constructive anatomy
c. Compatible anatomy
d. Complex anatomy
Answer:
a. Comparative anatomy
Explanation:
Comparative anatomy is a discipline that aims to study the similarities and differences between anatomical structures of two or more species to determine their degree of kinship. Through this analysis it is possible to understand the modifications undergone by a species and to examine evolutionary evidence and adaptations for survival in a given environment. In short, comparative anatomy is the discipline that studies evolutionary trends between species.
During the rhythmic ativity of sleep, thalamocortical neuron activity __________thalamoreticular neuron activity, that in turn, __________thalamocortical activity.
a) activate, inhibits
b) inhibits, activates
c) activates, activates
d) inhibits, inhibits
Answer:
b) inhibits, activates
Explanation:
During the rhythmic ativity of sleep, thalamocortical neuron activity inhibits neuron activity, that in turn, activates thalamocortical activity.
Difference between gram positive and negative bacteria
The difference between gram positive and gram negative is the stuctural difference in the cell walls