The correct answer is A and B
In this scenario you want to test if the evolution of a food preference may reinforce reproductive isolation. You know that you want to measure if golden rain tree bugs and balloon vine bugs prefer fruits from either host plant. Please write a hypothesis based on this.
Answer:
It is given and we know that if balloon vine bugs and golden rain tree bugs prefer fruits from either host plant. Then the change in the food preference leads to reproductive isolation which is sympatric isolation
There is the ongoing rapid evolution of bugs in relation to the seed defense structures of their host. Rapid evolution in bug populations that feed on recently introduced sapinds is grounded with an ancestral pattern of coevolution between the bugs and the defenses of sapinds.
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Contrast the usefulness of absolute and relative dating techniques.
Answer:
In relative dating, fossils are dated according to the depth at which they were buried While in the absolute dating, isotopes of carbon are used for dating fossils. The absolute dating is more precise than relative dating because it tells the exact age of the fossils.
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Explanation:
D. not scientific is the answer
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Answer:
D I believe
Explanation:
if there is no experimental test to disprove the hypothesis, then it lies outside the realm of science
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a grass hopper movE from place to place when it muscles
Grasshopper contract and relax itz muscles to move
Answer:
Explanation:
A grasshopper's hind legs function like miniature catapults. In preparation for a jump, the grasshopper contracts its large flexor muscles slowly, bending its hind legs at the knee joint. ... The grasshopper then relaxes its leg muscles, allowing the spring to release its energy and fling the insect into the air
What do spindle fiber and flagella have in common:
Select one:
a. They are examples on a structure called a microfilaments
b. They are all structures found in prokaryotic cells
c. They are microtubules
d. They are found in the nuclei of eukaryotic cells
Answer: c
Explanation: Spindle fiber: is a microtubules that comes out from the centrosomes when the cell is preparing for division. They are responsible for the segregation of sister chromatids and movement of chromosomes during mitotic and meiotic division.
Flagella: a slender threadlike structure, especially a microscopic appendage that enables many protozoa, bacteria, spermatozoa, etc. to swim.The thread-like structure is called chromosomes.
This can conclude that microtubules are common in spindle fiber and flagella.
After weathering releases the
phosphate from rocks and
sediments, where does it go?
A. directly into the leaves of plants
B. into the atmosphere
C. caught by organisms in the air
D. into the soil
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Answer:
d. into soil
Explanation:
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If a DNA triplet is ATA, then the complementary DNA triplet is..
When a reaction is in dynamic equilibrium, what is the free energy difference between the reactants and products?
Answer:
the difference is 0, because it's in constant equilibrium, meaning there should be no net change.
explain why in the morning plant leaves are moisten
It occurs when there is active absorption of water by roots and transpiration is low i.e. moist and humid conditions. Therefore, guttation generally occurs in the early morning because transpiration is less at that time but water is actively absorbed by the roots.
A group of archaic mammals that at times are referred to as mammal-like primates characterized by claws instead of nails, no postorbital bar, arboreal quadrupeds, and best known from Montana and lived during the geologic Paleocene Epoch are referred to as:
The secretion of ADH is caused by _ in osmotic pressure of blood. a)increase b)decrease
Answer:
the secretion of adh is cauesd by increase in osmotic pressure of blood
Which of the following characteristics of living things is very important for a group or organisms, but not a single organism?
A: Living things respond to their environment.
B: Living things are made up of units called cells.
C: Living things maintain internal balance.
D: Living things reproduce
Answer:
D.
Explanation:
Because living things is responsible for reproduction
The characteristics of living things that is very important for a group of organisms, but not a single organism is their ability to reproduce.
LIVING THINGS:
Living things are characterized by certain processes that define them. This means that all organisms considered living must be able to fulfill these processes.Some of the characteristics of living things include:
Ability to reproduceAbility to respond to stimuliAbility to perform homeostasisAmong these characteristics, the ability to reproduce is more important for a group of organisms rather than an individual because reproduction involves the multiplication of organisms.Learn more at: https://brainly.com/question/7464705?referrer=searchResults
Identify the effects of the vagus nerve on the following components of the digestive system Salivary glands Pyloric sphincter (gastric emptying) Smooth muscle in the gallbladder Smooth muscle in the duodenal papilla (sphincter of Oddi)
Answer:
Vagus nerve is the 10th cranial nerve. It is long start from brain and distributed over head, thorax and abdomen.
Explanation:
1. In the salivary gland the secretory and vasodilator effect on afferent nerve is mediated mainly by parasympathetic reflex which is given by vagus nerve.
2. Pyloric sphincter is the part present between the stomach and small intestine which regulate the flow of food particles from stomach to the intestine. Vagus nerve control the activities of pyloric sphincter. Vagus nerve help the pyloric sphincter to relax.
3. Efferent nerves of vagus nerve help the gall bladder to contract. Vagus nerve is stimulating the gastric tract to contract. So the vagus nerve stimulation promotpromotprthe production of CCK hormone and it will lead to the contraction and secretion of hormones from the gallbladder. Those contractions will help the gallbladder to empty the hormones from gallbladder.
4. The efferent nerves of vagus nerves act on the smooth muscles of duodenal papila. As above says it lead to the contraction of smooth muscles and also promote the production of CCK.
6. Compare the different measurements of the thermometer which are used.
Which statement accurately describes the "savanna" biome? This biome features tropical grasslands and is located near the equator. This biome features high levels of biodiversity and is located near the equator. This biome features a level of permafrost and a short growing season during the winter. This biome features forests and grasslands that go dormant during the winter.
Answer:
This biome features forests and grasslands that go dormant during the winter.
This biome features high levels of biodiversity and is located near the equator.
This biome features a level of permafrost and a short growing season during the winter.
This biome features tropical grasslands and is located near the equator.
Which of the following characteristics are shared by all living organisms
Answer:
Cells
Explanation:
They have cells
Once the neural plate edges have fused to become a neural tube, the tissues that were at the edges of the plate now form the __________ region the neural tube. Fill in the blank.
Answer: Dorsal.
Explanation:
The neural plate is a region of the dorsal ectoderm that develops into the neural ectoderm. It is a flat structure, with columnar appearing cells, and the formation of the neural ectoderm is the first step in the neurulation process. This region is generated from the thickened mid-dorsal surface opposite the primitive line of the ectoderm. From this epithelial zone the various types of neuronal and glia cells belonging to the nervous system are derived. For the neural plate to be built, it is necessary that the epiblast cells converge towards the midline of the embryonic disc forming a groove of the primitive line, delimiting a longitudinal axis of bilateral symmetry around which the embryonic structures and their organs will be aligned. From this moment on, the embryo will have a rostral (cephalic) and caudal (tail) region as well as a left and right side and a dorsal (back) and ventral (front) surface. From the folding of the neural plate or neurulation, the neural tube and the development of the entire nervous system will be formed.
The neural tube is tubular structure that undergoes modifications and will give rise to a central nervous system structure (encephalon and spinal cord). The neurulation process begins by means of signals sent by the dorsal mesoderm and pharyngeal endoderm to the ectodermal cells located above these germ layers. These signals cause this area of the ectoderm to elongate into a columnar plate of cells. The elongation allows the differentiation of the cells of the future neural plate, with respect to the pre-epidermal cells surrounding the area.
So, the neural tube is formed by invagination from the dorsal region of the ectoderm (neural plate) induced by the notochord while it is forming. This occurs at the beginning of the third week of conception by a process called neurulation.
scientists believe the earth likely warmed between 0.65 celsius and 1.05 celsius with an average value of 0.85 celsius between years 1880 and 2012. what was error bar for the increase in temperature over that period?
Answer:
The lower limit is 0.65°C
The upper limit is 1.05°C
the average is 0.85°C
The difference between the average and the lower limit is:
0.85°C - 0.65°C = 0.20°C
the difference between th average and the upper limit is:
0.85°C - 1.05°C = -0.20°C
Then we can write the change in temperature as:
T = 0.85°C ± 0.20°C
Now we want to find the error bar.
The error bar would be the total distance between the lowest value and the largest value.
Then the error bar is:
1.05°C - 0.65°C = 0.40°C
notice that the error bar is twice the error, which makes a lot of sense because the error (± 0.20°C) goes up and down.
Then the error bar in this measure has a magnitude of 0.40°C.
there is 2 test tube containing
sodium chloride and sodium sulphate solution respectively suggest a method to know which is Sodium sulphur
Answer:
These two solutions react to form a white insoluble precipitate.
Explanation:
BaCl
2
+Na
2
SO
4
→2NaCl+BaSO
4
↓
This is a double displacement reaction as the two compounds exchange their ions to form two different compounds.
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explain why germinating seeds were used in this investigation cellualr respiration
Explanation:
As oxygen is consumed to provide energy, germinating seeds release carbon dioxide. ... HYPOTHESES: The experimental hypothesis is that germinating seeds will show a greater rate of respiration than control glass beads. Additionally, that at higher temperatures, the rate of cellular respiration in the seeds will increase.
Which of the following effectively describes the situation of someone with an inherited predisposition to cancer such a familial adenomatous polyposis or BRCA-associated familial breast cancer?
a) Every cell of their body contains a gain-of-function allele of an oncogene
b) Most cells in their body contain multiple cancer-causing mutations
c) If they get malignant cancer, somatic mutations will not have been a factor
d) Their cancer will most likely arise in their germ cells, not their somatic cells
e) None of the answers effectively describes the situation
f) Every cell of their body contains a defective, loss-of-function allele of a tumor suppressor gene
Answer:
Every cell of their body contains defective , loss of function allele of a tumor suppressor gene
Explanation:
Tumor suppressor genes - They encode Proteins that inhibit cell proliferation . But due to Loss of functional alleles in Tumor suppressor genes it leads to the development of different cancers
Every cell of the body comprises of a defective and loss-of-function allele of a tumor suppressor gene.
The presence of defective and non-functioning tumor suppressor gene is responsible for the happening of cancer disease because the tumor suppressor gene slow down the process of cell division as well as repair mistakes occur in DNA molecule. When the tumor suppressor genes can't perform its function properly, it causes out of control growth of cell, which can lead to cancer disease so we can conclude that tumor suppressor gene is responsible for the cancer disease.
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EVOLUTION CONNECTION The history of life has been punctuated by several mass extinctions. For example, the impact of a meteorite may have wiped out most of the dinosaurs and many forms of marine life at the end of the Cretaceous period. Fossils indicate that plants were less severely affected by this mass extinction. What adaptations may have enabled plants to withstand this disaster better than animals
Answer:
Dissaster like meteorite impacted all type of living forms, however, animals are impacted the most and plants are impacted least. It is possible due to ability of plants to prepare their food on their own as they are autotrophic and use photosynthesis. The raw material for preparing these are easily available that are sunlight, CO2 and water.
They are not depende on other for their cellular respiration. The other major reason is that the Plant seeds can remain dormant in unfavorable conditions for many years in the soil. The roots always provide nutrition even the stems get effected.
Schistosoma becomes infectious to humans during which of the following stages?
After cercariae migrate to the liver
After the eggs are released in urine
After it is released from the snail
After mating of male and female worms
Before the eggs hatch
Which of the following groups includes a protozoan that is transmitted sexually?
Chromalveolata
Excavata
Amoebazoa
Archaeplasteda
Rhizaria
Schistosoma becomes infectious to humans during which of the following stages?
After cercariae migrate to the liver
After the eggs are released in urine
After it is released from the snail
After mating of male and female worms
Before the eggs hatch
Which part of a mushroom would be eaten?
Thallus
Sporangium
Mycelium
Septum
Hyphae
Answer:
After it is released from the snailExcavata SporangiumExplanation:
Schistosoma life cycle:
1. Human excretes schistosomes eggs through feces and/or urine. These eggs eventually reach the water.
2. Once in the water, schistosomes eggs hatch and release immature larvae named miracides.
3. Miracides swim and penetrate a freshwater snail, which is an intermediary host.
4–5. Once inside the snail, miracides turn into sporocites and then into cercariae. Cercariae characterize by having a bifurcated tail. Snails release the cercariae in water, and they swim until they get in touch with a mammal. Once they reach the mammal, they penetrate the skin and get into the body. This is the stage in which the parasite becomes infectious to humans. Just a few cercariae are enough to infect a person.
6. When cercariae penetrate their host body, they lose their tails and turn into schistosomules. These new forms travel to the liver, where they end their maturation process.
7. Males and females mate in the liver and migrate to veins of the intestine or bladder. Once there, the females lay the eggs, which are then excreted by the host. And the cycle begins again.
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Excavata are asymmetrical protists. The group receives its name because of the appearance of the feeding groove. Excavata is composed of many protists. One of them is Parabasalid.
Parabasalids are parasitic protists, and one of them is Trichomonas vaginalis, which is transmitted sexually.
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Sporangium. This is the reproductive structure of the mushroom and the one that is usually eaten. Spores develop inside the sporangium. Its surface is covered by a protector cuticle. It can be eaten when it is closed or when it is already open. However, when open is tastier.
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Answer:
Metals takes up most of the left side of the periodic table.
Salt minerals formed by which method
Answer:
solar, evaporation, and rock mining.
Explanation:
What type of cells in placozoans help with the digestion of food?
A. gland cells
B. cylinder cells
C. cover cells
D. fiber cells
Answer:
Its gland cells
Explanation:
The sun is located .................. of the solar system
Classify each of the following changes as either exothermic or endothermic. (4 points) Burning propane: ____________________ Using a chemical hand-warmer: ____________________ Photosynthesis in plants: ____________________ Lighting a laboratory burner: ____________________
Answer:
Classify each of the following changes as either exothermic or endothermic. (4 points) Burning propane: _____exothermic_____________ Using a chemical hand-warmer: __________endothermic_________ Photosynthesis in plants: _________endothermic___________ Lighting a laboratory burner: ________exothermic____________
The complete oxidation of one glucose molecule yields 30 or more ATP . Glucose catabolism includes glycolysis, pyruvate oxidation, and the citric acid cycle. The total yield of ATP includes ATP , GTP , and reduced cofactors that yield ATP from the electron transport chain and oxidative phosphorylation. Which processes yield the most ATP
Answer:
Electron transport chain.
Explanation:
Electron transport chain is the process which yield the most number of ATP as compared to all three major phases of cellular respiration. Glycolysis produces only 2 ATP from the breakdown of molecule of glucose. In the Krebs cycle, one GTP which is an ATP equivalent is produced from the breakdown of one glucose molecule while on the other hand, 32 ATP molecules are produced from the breakdown of one glucose molecule.
Which structure transports urine to the bladder by peristaltic action?
Answer:
The muscular layer of the ureter consists of longitudinal and circular smooth muscles that create the peristaltic contractions to move the urine into the bladder without the aid of gravity.
Answer:
The ureter
Explanation:
The ureter is a long thin tubular structure 10-12 inches long which carries urine produced in the kidney to the bladder. The urine is transported by a process called peristalsis. The ureter actively propels urine from the kidney down into the bladder.
