Answer:
skydiving behavior
Explanation:
The flight is an amazing adaptation that consists in the use of aerodynamic forces by flapping the wings. In vertebrates, flight evolved in three independent events: in pterosaurs (i.e., prehistoric winged reptiles), birds, and bats (mammals). In tetrapods, i.e., vertebrates with four legs, it is believed flight had a gliding origin, thereby this feature would have emerged as a consequence of the skydiving behavior necessary to steer the descent.
Which correctly lists three different geologic features that help scientists determine the relative ages of rocks by their positions? magma, erosion, and intrusions erosion, magma, and cross-cutting relationships intrusions, index fossils, and magma index fossils, intrusions, and cross-cutting relationships
Answer:
D
Explanation:
index fossils, intrusions, and cross-cutting relationships
Option D
.................
1. Which group of clinical findings describes the typical presentation of ALL (acute lymphoid leukemia)?
Answer:
Pain in long bones, infection, fever, bruising
Explanation:
Acute lymphoid leukaemia is a cancerous disorder of the bone marrow that affect the body's lymphocytes or red blood cells.
It occur more in children and develop when there there is errors in the DNA of the bone marrow.
Pain in long bones, infection, fever, bruising are the clinical findings of acute lymphoid leukaemia because this condition affect the white blood cells that is the body defence cells that help to fight against infections. When it is beeen affected, infections set in, there will be bruises, pains, fever e.t.c.
The estimated heritability of 48 percent for neuroticism in the population supports the claim that Group of answer choices the population in general has a recessive gene for neuroticism. the incidence of neuroticism is associated with that of another distinct trait. the variability in neuroticism is due partly to genetic variability in the population. those with the neurotic trait share a particular dominant allele.
Answer:
the variability in neuroticism is due partly to genetic variability in the population.
Explanation:
In population genetics, heritability (h) is defined as the amount of the phenotypic variation attributable to genetic factors rather than environmental factors.
Mathematically, h is calculated by using the following equation: H2 = Vg/Vp, where Vg is the variation in genotype, while Vp is the variation in phenotype.
An H value close to zero (0) indicates a very low heritability (i.e., the phenotype depends on the environmental differences between individuals), while an H close to one (1) indicates very high heritability (i.e., the phenotype is firstly dependent on genetic factors).
In this exercise we have to use the knowledge of genetic variability to be able to explain the topic in question, so we have to:
The variability in neuroticism is due partly to genetic variability in the population.
Knowing that the importance of genetic variability is due to:
In inhabitants of a place genetics, heritability (h) happen outline as the amount of the phenotypic variation deducible to genetic determinant alternatively environmental determinant.
An H advantage nearly zero (0) signify a very low heritability (that is, the phenotype depends in contact the environmental distinctness between thing), while an H nearly one (1) display very high heritability (that is, the phenotype exist firstly helpless on coming from heredity determinant).
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Rank each of the following events of the ovarian cycle in chronological order using #1 to identify the earliest event. 61 Rank the options below. 8 points
1. The follicular phase begins
2. The follicle collapses and bleeds and becomes the corpus luteum.
3. FSH stimulates the maturation of follicles
4. A surge in LH stimulates the primary oocyte in the dominant follicle to complete meiosis
5. The secondary oocyte is formed and the dominant follicle ruptures (ovulation).
6. Estradiol increases the dominant follicle's sensitivity to the gonadotropins
7. FSH secretion diminishes and non-dominant follicles degenerate.
8. The corpus luteum secretes progesterone helping to prepare the uterus for a possible fertilization
Answer:
1. The follicular phase begins
2. FSH stimulates the maturation of follicles
3. Estradiol increases the dominant follicle's sensitivity to the gonadotropins
4. FSH secretion diminishes and non-dominant follicles degenerate.
5. A surge in LH stimulates the primary oocyte in the dominant follicle to complete meiosis
6. The secondary oocyte is formed and the dominant follicle ruptures (ovulation).
7. The follicle collapses and bleeds and becomes the corpus luteum.
8. The corpus luteum secretes progesterone helping to prepare the uterus for a possible fertilization
Explanation:
Ovocites production in all vertebrates is cyclic. It involves hormones interaction and changes in follicular cells and uterine walls. The hypothalamus is in charge of this cycle, and the hormones involved are the estrogens and progesterone, hypophysis hormones FSH and LH, and the hormone that releases gonadotrophins GnRH. In reduced concentrations, estrogens act by negative feedback inhibiting the production of FSH, GnRH, and LH. In high concentrations, by positive feedback, estrogens stimulate the GnRH secretion and enhancing the synthesis of FSH and LH hormones. Under the high concentration of progesterone, the secretion of all these hormones is inhibited.
At the beginning of the menstrual cycle, the hormonal levels are low. After a few days, oocytes and follicles start to maturate under the influence of the gonadotrophic hormones FSH and LH. As the follicle increases in size, it secretes estrogen that stimulates the endometrium´s regeneration to make the fertilized ovule implantation possible. The rapid increase in estrogens level in the middle of the cycle provokes an increase in LH release, which also stimulates the oocyte release (ovulation) that goes to the uterus. Under the stimulation of the LH, the follicle cells increase in size and produce the luteal body. Cells of this last one increase in size and secrete progesterone and estrogen. The high levels of these two hormones inhibit the secretion of GnRH and thus the secretion of FSH and LH.
If there is not fertilized and implanted egg, the luteal body is reabsorbed and the production of the ovarian hormones decreases. Under low hormones concentration, the endometrium loses part of its wall by eliminating as the menstrual fluid. When the ovarian hormones decrease, hypophysial gonadotrophic hormones increase again followed by the development of a new follicle and the increase in estrogen levels when the cycle starts all over again.
"A research group is looking for a way to use spider silk, valued for its high tensile strength, to make extremely strong ropes, but spiders only produce small amounts of silk. They have isolated the gene and have inserted it into cows to produce the silk protein in their milk where the scientists can collect it in large quantities. What is this process called?"
Answer:
The correct answer is "Transgenics".
Explanation:
The missing options of this question are:
A. Artificial selection
B. Transgenics
C. Bioreaction
D. Recombination
The correct answer is option B. "Transgenics"
Transgenics is a term used to describe the artificial insertion of one or more DNA sequences to an organism that would normally not have it. In this example, the term transgenics applies to the cows that serve as hosts for the production of the spider silk. The process transgenics is what gives the name to terms such as "transgenic food", "transgenic plants" or "transgenic animals".
a. The links joining monosaccharide residues in a polysaccharide are called ____________________ bonds.
Answer: Glycosidic bonds.
Explanation:d
Glycosidic bonds are covalent bonds that join monosaccharides or longer glucose chains to other monosaccharide or carbohydrates to form disaccharides, oligosaccharides and polysaccharides and are named according to the type of the atom present on the second carbohydrate to be linked. The bond is usually formed between the hemiacetal of the first carbohydrate and the functional group on the second molecule which could be Oxygen-, Nitrogen-Sulphur -, and Carbon -glycosidic bonds.
Examples of Polysaccharides are Cellulose Starch , Glycogen formed by the linkage of many long residue monosaccharides connected through glycosidic bonds.
______ are chemical messengers secreted by glands. Exocrine glands, such as sweat glands, secrete fluids through ducts. _______ glands secrete hormones directly into the bloodstream. The _______ gland plays an important role in puberty and growth. Epinephrine, triggering the "fight or flight" response, is produced by the _______ glands, which sit on top of the kidneys. Most glands that secrete hormones operate using feedback mechanisms. When hormone concentrations are high, the gland will produce ________ of the hormone. Many cells produce chemicals called _______, hormone-like substances that impact inflammation and reproduction. The gland that helps regulate growth, body temperature, and the level of calcium in the blood is called the _______. Describe the function and compare steroidal and nonsteroidal hormones. How does each type of hormone interact with the cell? What other molecules are required for or involved in their function?
ANSWERS:
1. Hormones
2. endocrine
3. pituitary
4. adrenal
5. less
6. prostaglandins
7. thyroid
8. Steroidal hormones enter the cell directly and interact with DNA inside the nucleus. These hormones change gene expression, affecting the RNA that is produced and the proteins that are translated in a cell. Nonsteroid hormones do not enter the cell. Instead, they bind to specific receptors on the outside of the cell membrane. This triggers molecules called secondary messengers, such as cAMP, to begin their work of relaying information in the cell, where other chemicals, messengers, and proteins are involved to create a cellular response.
Answers:
Hormones are chemical messengers....
Endocrine glands secrete hormones...
The pituitary gland plays...
is produced by the adrenal glands...
the gland will produce fewer amounts of the hormone...
produce chemicals called paracrine factors...
blood is called the thyroid.
Steroid hormones are synthesized from cholesterol, while nonsteroid hormones are synthesized from modified amino acids and small peptides. Non-steroid hormones are not lipid-soluble and therefore they need to bind to a receptor on a cell membrane; while steroid hormones can diffuse through the cell membrane.
Explanation:
Hormones are signaling molecules synthesized by glands. The endocrine glands include the adrenal glands, pineal gland, thyroid gland, parathyroid gland, pituitary gland, ovaries, testes, pancreas and hypothalamus. The pituitary gland is an endocrine gland that secretes hormones capable of stimulating the adrenal glands in order to produce steroid hormones. Hormone levels are often modulated by negative feedback, by which high-hormone levels reduce their own production. Paracrine factors (also known as growth and differentiation factors) are proteins that can diffuse across small distances in order to induce responses in neighboring cells. The thyroid gland secretes hormones involved in regulating metabolism and growth. Moreover, the thyroid gland also secretes calcitonin that regulates calcium levels in the blood.
Hormones are chemical messengers that are secreted by glands.
Endocrine glands secrete hormones directly into the blood stream. The pituitary gland plays an important role in puberty and growth . Epinephrine hormone is a crucial part of the body's fight-or-flight response which is produced by the adrenal glands which are located on top of the kidneys.
When hormone concentrations are high, the gland will produce less amount of the hormone. Many cells produce chemicals called hormone like substances that impact inflammation and reproduction of the organism. Parathyroid gland are the gland that helps regulate growth, body temperature, and the level of calcium in the blood.
Steroid hormones are synthesized from cholesterol and has the ability to diffuse through the cell membrane while on the other hand, non-steroid hormones are synthesized from amino acids and small peptides. Non-steroid hormones are not lipid-soluble and therefore they need to bind to a receptor on a cell membrane.
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What is the correct order from highest level to lowest level of taxonomic hierarchy?
Answer:
-_-
Explanation:
The kingdom has the highest rank followed by division, class, order, family, genus, and species. Species has the lowest rank in the hierarchy.
Different creatures are identified, categorized, and described using taxonomy. With the help of this approach, each species is given a distinctive name that makes species tracking simpler.
The taxonomic hierarchy was introduced by Linnaeus. It is also known as a Linnaean hierarchy. It is used to classify organisms into different categories. It includes the sequence of categories in a decreasing or increasing order from kingdom to species and vice versa.
This hierarchy's taxonomic category or rank refers to each level. Kingdom is always listed first in this system of categorization, then division, class, order, family, genus, and species.
Thus ,the highest level is kingdom and the lowest is species.
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Can a dragon fly fly if it’s wings are soaked
Answer:
yeeeeeeeeee
Explanation:
The Krebs cycle is an aerobic
process meaning it needs what to
take place?
ОАТР
O Cartion dioxide
O Glucose
O Oxygen
Answer:
Oxygen
Explanation:
Kreb's cycle, also known as the Tricarboxylic acid cycle (TCA), is the second process of aerobic cellular respiration, after glycolysis. In the kreb's cycle, acetyl-CoA from pyruvic acid is oxidized to CO2 with the formation of 2 ATP molecules.
Krebs cycle occurs in the matrix of the mitochondria where chemical energy in form of ATP, NADH and FADH2 are produced. Krebs cycle is termed an AEROBIC process because it requires OXYGEN in order to occur.
The microorganisms that inhabit the sludge at the bottom of a lake would live in which microbiota zone
Answer:
Explanation:
In a lake, oxygenic phototrophs produce new organic material as well as O₂. If primary production rates are very high, the resultant excessive organic matter production can lead to bottom-water O₂ depletion from respiration and the development of anoxic conditions. This in turn stimulates anaerobic metabolisms, including anaerobic respirations and fermentations.
Organic matter that is not consumed in surface layers sinks to the depths and is decomposed by anaerobes.
Sea corals live exclusively in the ocean and are radially symmetrical. They have microscopic stinging barbs that shoot out to immobilize their prey. This allows corals to hunt even while they are stuck to the ocean floor. What animal phylum do corals belong in? chordates mollusks cnidarians annelidsA scientist found a new species in a rain forest. The species was small and green in color. She examined one of its many cells and found that the cell had a nucleus but no cell wall.
To which kingdom does this species most likely belong?
plants, because it is green and small
bacteria, because it is small and has a nucleus
fungi, because it is green and has no cell wall
animals, because it is multicellular with no cell wall
Which of the following is responsible for sensing excessive stretch to protect the muscle?
A. Golgi tendon organ
B. Muscle spindle
C. Muscle fiber
D. Sarcomere
Answer: Muscle Spindle
Explanation: The muscle spindle is actually a specialized muscle fiber, which detects excessive stretch within the muscle. ISSA CPT Page 357
The thing that is responsible for sensing excessive stretch to protect the muscle is the golgi tendon organ, which is present in Option A as it is a sensory receptor located in the tendons of muscle fibers.
What is the golgi tendon organ?The golgi tendon organ is a type of proprioceptor, which is a sensory receptor that provides information about body position and movement, is located in the tendons of the skeletal muscles and is made up of sensory nerve fibers wrapped around collagen fibers within the tendon. When a muscle contracts, it generates tension in the tendon, which activates the sensory nerve fibers in the Golgi tendon organ, and the nerve fibers then send signals to the spinal cord for further work.
Hence, the thing that is responsible for sensing excessive stretch to protect the muscle is the golgi tendon organ, which is present in Option A.
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Determine what kind of variation is related to the following trait: Pierced Ears.
A. Only Environmental variation
B. Neither
C. Only Genetics
D. Both Genetics and the Environment
Answer:
D. Both Genetics and the Environment
Explanation:
Getting a pierced ear is both a genetic and environmental trait because, in males, it is not genetically transferred, rather it is a choice to manually pierce the ear maybe at birth, or much later in life. In females, however, pierced ears is a genetic trait because it is gotten naturally when they are born
These environmental factors include where a person stays, the kind of friends they keep, and people they try to imitate. Ear piercing is something that is done manually for males for various reasons.
What are biological pumps and Carbonate pump? In ocean...
Answer:
The carbonate pump is sometimes referred to as the “hard tissue” component of the biological pump. ... While the biological carbon pump fixes inorganic carbon (CO2) into particulate organic carbon in the form of sugar (C6H12O6), the carbonate pump fixes inorganic bicarbonate and causes a net release of CO2
Explanation:
Cigarette smoke contains thousands of chemicals, including nicotine and carbon monoxide. How do these two components of smoke affect the cardiovascular system?
Answer:
Exposure to nicotine and carbon monoxide change your heart and blood vessels in ways that increase your risk of heart and cardiovascular disease. Nicotine causes your blood vessels to constrict or narrow, which limits the amount of blood that flows to your organs.
Explanation:
hope this answer helps you.
a species has homologous chromosomes. what does this say about the species?
Having homologous chromosomes indicates that the organism is a diploid species.
A species of bird on the mainland can have yellow (bb), blue (BB), or green (Bb) plumage. A few yellow birds land on a ship and are carried past an island, which they land on and settle. The resulting population of birds would have an allele frequency of:
Answer:
The resulting population of birds would have an allele frequency of "b"
Explanation:
Kindly download the attachment for the answer.
Why do scientists communicate their results?
Answer:
It is important to share what you have learned with others.
Explanation:
Scientists often find solutions to problems by knowing the results of other scientists' experiments. Communicating your results is often the first step to clearly identifying a problem and beginning to think about possible solutions.
Publishing results of research projects in peer-reviewed journals enables the scientific and medical community to evaluate the findings themselves. It also provides instructions so that other researchers can repeat the experiment or build on it to verify and confirm the results.
Answer:
Publishing results of research projects in peer-reviewed journals enables the scientific and medical community to evaluate the findings themselves. It also provides instructions so that other researchers can repeat the experiment or build on it to verify and confirm the results.
Explanation:
Scientists often communicate their research results in three general ways. One is to publish their results in peer-reviewed journals that can be ready by other scientists. Two is to present their results at national and international conferences where other scientists can listen to presentations.
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Which element us considered the most versatile element in living organisms and why?
Answer:
Carbon, because it provides strength to the important protein, keratin. So, Carbon is considered the most versatile element in living organisms.
Explanation:
In order to assemble the organic compounds that are necessary for life, enzymes must break down food into their building blocks. What would happen if someone was not able to produce enough amylase? Simple sugars would not be obtained from carbohydrates. Amino acids would not be obtained from proteins. Fatty acids would not be obtained from lipids. Nucleotides would not be obtained from nucleic acids
Answer:
A
Explanation:
mitochondria?
Without mitochondria, does this organism still
carry out all the basic functions of life?
Answer
No
Explanation:
You can't survive without mitochondria, the organelles that power most human cells. Mitochondria are the descendants of bacteria that settled down inside primordial eukaryotic cells, eventually becoming the power plants for their new hosts.
Please help!!! The first menses is called the A. Menarche B.menopause C.climacteric D.emission E.ovulation
Answer:
menarche
Explanation:
What process in the hydrological cycle occurs when water vapor in the air changes to liquid water? (A) Condensation (B)Evaporation + (C)Precipitation (D)Vaporization
Answer:
option A is correct
Explanation:
condensation is the process by which water vapors in the air are converted to liquid water
Answer:
The answer would be condensation. Think of a water bottle and how when you take it out of a fridge, water droplets form on the outside.
Explanation:
____________________ syndrome is a debilitating disorder characterized by profound fatigue that is not improved by bed rest.
Hi there! Hopefully this helps!
------------------------------------------------------------------------------------------------------------
Answer: Chronic fatigue syndrome.~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Chronic fatigue syndrome is a debilitating and complex disorder distinguished by profound fatigue that is not enhanced by bed rest and maybe made more harmful by physical or mental activity.
why do pk values of ionizable groups differ between free amino acids and amino acid residues in polypeptides
Answer:
Because of electrostatic interactions.
Explanation:
The pk values associated with ionizable groups are the result of the electrostatic interaction that occurs with the interaction of the ionizable side chain groups with groups of side chains that have charges, or that have neutral charges. This interaction directly influences the pk values of ionizable groups, leaving them different between free amino acids and amino acid residues in polypeptides.
Classify each picture as Carbohydrates or Lipids
Answer:
1. Lipids
2. Carbohydrate
3. Lipids
4. Carbohydrate
5. Lipids
6. Lipids
7. Carbohydrate
Explanation:
Lipids and carbohydrates are two of the four major biological molecules (the other two being proteins and nucleic acids). They (lipids and carbohydrates) are both long chains composed of elements: carbon (C), hydrogen (H) and oxygen (O).
Lipids called triglycerides are majorly made up of building block fatty acids (long hydrocarbon chains with carboxylic acid) and glycerol ( an hydrocarbon made up of three hydroxyll groups).
Carbohydrates, on the other hand, are made up of long chains of carbon, hydrogen and oxygen with aldehyde or ketone functional group. They are composed of monosaccharide building blocks (also called simple sugars) with general formula CH20(n).
Based on the structural composition of lipids and carbohydrates, structures 1,3,5 and 6 are lipids while 2, 4 and 7 are carbohydrates.
The way people understand and make sense of others and themselves is known as
Answer:
Social Cognition. is the answer
Placing wilted lettuce in cold water will make it crisp again. Which statementbest describes what happens to restore the lettuce to its original condition? A Salts in the leaf caused water to leave the cells. B Water left the lettuce cells by diffusion. C Osmosis caused salts to enter the lettuce cells. D Water entered the cells of the lettuce by osmosis.
Answer:
c
Explanation:
Answer:
C Osmosis caused salts to enter the lettuce cells
Explanation:
mars facts and talk about mars
Answer:
Mars is a planet. It is the fourth planet from the Sun. It is the next planet beyond Earth. Mars is more than 142 million miles from the Sun. The planet is about half the size of Earth. A day on Mars is 24.6 hours. A year on Mars is 687 Earth days. Mars is known as the Red Planet. It is red because the soil looks like rusty iron. Mars has two small moons. Their names are Phobos and Deimos.
1) Named after the Roman God of war, Mars is the fourth planet from the sun in our solar system.
2) Mars is also known as the ‘Red Planet’ because, well, it’s red! This signature colour comes from the large amount of a chemical called iron oxide (or ‘rust’ as you might know it) in its rocks and soil.
3) Mars is the second smallest planet in the solar system after Mercury. With a diameter (distance through the middle) of 6,791 kilometres, it’s roughly half the size of Earth.
4) It can get pretty cold on Mars –– much colder than our own planet, since it’s further away from the sun. At the equator, temperatures can reach 20°C, but at its poles they can plummet to as low as -140°C.
5) Mars is home to the highest mountain in our solar system –– a volcano called Olympus Mons. Standing a whopping 24 kilometres high, it’s about three times the height of Mount Everest!
6)You could jump around three times higher on Mars than you can on Earth. This is because the planet’s gravity – the force that keeps us on the ground – is much weaker.
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Answer:
mars is the fourth planet from the sun.
its surface is made of iron oxide which gives it a red colour.
there are pieces of mars on earth, a Martian meteorite.
mars is the name of the Roman god of war and is often referred to as the "Red Planet"
the tallest mountain in the solar system is on mars.
research has shown signs of ancient floods on Mars but now water mostly exists in icy dirt and thin clouds.
mars has 2 moons, phobos and deimos. They are named for the greek god Phobos and deimos, sons of Ares and personification of fear.