spongy bone is found in the bones of the skull, sternum, vertebrae, the pelvis, the lining of the marrow cavity and the epiphysis.
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.
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.
dominant over the mutant vermilion (bright red) allele. A homozygous wild-type female fly is mated with a vermilion male fly. Predict the eye colors of F1 and F2 generations. (Assume that the F1 flies are allowed to interbreed to produce the F2 generation.)
.................................................................
Which nutrient is most closely related to the liver's ability to produce necessary clotting factors?
A) Iron
B) Vitamin E
C) Vitamin K
D) Folic Acid
Answer:
Vitamin K
Explanation:
Vitamin K is a fat soluble vitamin and plays an important role in the bone metabolism. Two important compounds of Vitamin K are Vitamin K1 and Vitamin K2.
Vitamin K is synthesized in the liver and helps in the coagulation of blood. Vitamin K acts as a coenzyme for vitamin K-dependent carboxylase. This enzyme is important for the synthesis of proteins that are involved in blood coagulation and bone metabolism.
Thus, the correct answer is option (C).
The _______ is (are) responsible for the red blood cell's ability to transport oxygen.
A. hemoglobin
B. leukocytes
C. platelets
D. hematocrit
Answer:
(A). hemoglobin
Explanation:
Hemoglobin is iron-containing protein, present in RBCs (red blood cells) of nearly all vertebrates and some invertebrates. It is made up of four globular protein units.
The main function of hemoglobin is to transport oxygen to the different parts of the body. The oxygen is requires by the body cells to perform cellular respiration that generates energy in the form of ATP molecules.
Thus, the correct answer is option A.
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).
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.
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.
Hope this helps!
Feel free to ask if you have anymore questions!
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).
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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It is the structure that marks the division between the right and left lobes of the liver.
Answer:
falciform ligament
Explanation:
Falciform ligament’s is the structure which divides the liver into two lobes – right and left. It is a sickle shaped structure which connects the ventral body wall to the liver. It is the remaining part of fetus’s ventral mesentery and consist of fat between its layers. It is situated at the anteroposterior plane and connect to the left lobe from its back.
List 2 types of bone tissue.
Answer:
Cortical Bone and Cancellous Bone
Explanation:
They're both bone tissue.
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.
Define depolarization.
Answer:
According to Dictionary.com, "depolarize" means:
a sharp division, as of a population or group, into opposing factions.the deposit of gases, produced during electrolysis, on the electrodes of a cell, increasing the resistance of the cell.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.
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.
Learn more about these statements is true.
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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.
Describe the function of three areas of the brain (you choose which areas).
Answer:
Brain is the main coordination center of the body and regulates the proper functioning of the body. Brain is divided into three parts- forebrain, midbrain and hindbrain.
Cerebrum: Crerebrum is the largest part of brain and controls the language, communication ability, and the process of learning and memory of an organism.
Hypothalamus: Hypothalamus is located at the base of a brain. Hypothalamus releases various hormones, regulates the body temperature and manages the sexual behavior of an organism.
Thalamus: Thalamus is located above the brain stem and relay the neurons into the cerebral cortex. Thalamus regulates alertness, wakefulness and sleep of an organism.
Final answer:
The cerebrum controls higher brain functions and is divided into four lobes, each with distinct functions. The cerebellum coordinates muscle movements and maintains balance. The brain stem regulates vital life functions and connects the brain to the spinal cord.
Explanation:
The human brain is an intricate organ responsible for controlling many functions of the body, understanding complex thoughts, facilitating communication, and more. In the study of biology, it is essential to understand the different areas of the brain and their specific functions. Three critical areas of the brain are the cerebrum, cerebellum, and brain stem.
The cerebrum is the largest part of the brain and is responsible for higher brain functions such as thought and action. The cerebrum is divided into four lobes: the frontal lobe, responsible for reasoning, planning, parts of speech, movement, emotions, and problem-solving; the parietal lobe, which manages perception of stimuli related to touch, pressure, temperature, and pain; the temporal lobe, concerned with perception and recognition of auditory stimuli, memory, and speech; and the occipital lobe, dedicated to visual processing.The cerebellum is located under the cerebrum. Its main function is to coordinate muscle movements, maintain posture, and balance. This part of the brain is vital for performing activities that require fine motor skills, balance, and coordination, such as typing or playing a musical instrument.Connecting the brain to the spinal cord, the brain stem plays a crucial role in regulating vital life functions, including breathing, consciousness, and controlling heart rhythms. It is also responsible for various automatic functions necessary for survival, such as digestion and sleeping cycles.
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.
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.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).
After compounds are absorbed through the villi of the small intestine: (a) They travel to the kidneys, which excrete absorbed, but unwanted water-soluble compounds (b) They travel to the kidneys, which screen for unwanted compounds that have been absorbed and begin to detoxify so they can be eliminated. (c) They travel to the liver, which excretes absorbed, but unwanted water-soluble compounds (d) They travel to the liver, which screens for unwanted compounds that have been absorbed and begins to detoxify so they can be eliminated.
Answer:
the answer is a.
Explanation:
the small intestine absorbs the nutrients in digested food, then the kidneys where the liquid waste is formed into urates for excretion.
A small, rounded depression on a bone that is meant for articulation is called a(n)
a. fossa
b. trochanter
c. tuberosity
d. condyle
e. foramen
Answer:
Condyle
Explanation:
The condyle is one of the outgrowth or projections present at the surface of the bone. The condyle is large and round in shape. It has a smooth articular surface and serves in joints formation. The condyle is present at the end of one bone and joins it with other bones.
Example: occipital condyles of occipital bone serve in joint formation with the first vertebra of the vertebral column.
A small, rounded depression on a bone that is meant for articulation is called a fossa. It is a hollow or depression that helps connect other structures like muscles or other bones.
Explanation:In the field of biology, specifically in the study of human or animal anatomy, a small, rounded depression on a bone that is meant for articulation is called a(n) fossa. This is a specific type of bone landmark, where other structures, such as muscles, tendons, or other bones, would connect. To help remember this, think of a 'fossa' as a hollow or depression in a bone that helps to form a joint. It's different from a trochanter, which is a large, rough projection, a tuberosity, which is a moderate protuberance where muscles and connective tissues attach, a condyle, that is a smooth, rounded articulating area, and a foramen, which is a hole that allows passage of nerves and or vessels.
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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.
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.
The I band contains only _______ filaments.
Answer: Thick filaments
Explanation:
Answer:
Thin
Explanation:
The I band contains only thin filaments. :)
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.
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.
It extends the vertebral column
a. Erector spinae
b. Vastus lateralis
Answer:
The Erector Spinae
Explanation: