Answer:
The hair shaft is comprised of three layers: the cuticle, cortex, and medulla.
Explanation:
Answer:
Hair shaft is consisted of three layers: cuticle, cortex and in certain cases medulla. Flat and square-shaped cuticle cells are adhered tightly to the cortex cells proximally.Explanation:
What type of environment did the first land plants probably live in?
Answer:
fluvial wetlands
Explanation:
The earliest megafossils of land plants were thalloid organisms, which dwelt in fluvial wetlands and are found to have covered most of an early Silurian flood plain. They could only survive when the land was waterlogged.
Type an X beside all the TRUE facts about estuaries.
22. Estuaries are partially enclosed bodies of water where salt water from the ocean mixes
with fresh water from rivers and streams (brackish water).
23. Estuaries have some of the highest abundance of organisms of all of the ecosystems in
the world.
24. Estuaries have very deep waters.
25. Estuaries provide food, shelter and nursery grounds for animals.
26. Estuaries tend to have low amounts of nutrients in their waters.
27. Estuaries are called the “cradle of the ocean.”
28. Estuaries are part of the intertidal zone.
29. Estuaries are stable environments in terms of tides, salinity and temperature.
Answer:
22 is correct, 24 is correct, 25 is correct and 28 is correct
Explanation:
Answer:
Except for 24 and 26. . All the statements are correct.
Explanation:
Statement 22: It provides for the definition of an estuary i.e., partially closed bodies of water where water from ocean mixes with freshwater from rivers, lakes, or streams. Therefore, the statement is TRUE.Statement 23: Estuaries have a very ideal ecosystem which supports both lives underwater and land making them rich in wildlife. This is because of the rich nutrient deposition in and around the estuaries. Therefore, the statement is TRUE.Statement 24: Estuaries usually have shallow beds and do not tend to have deep water. Therefore, this statement is FALSE.Statement 25: Since estuaries have good climatic conditions rich of flora and nutrients. It can provide food, shelter, and nursery grounds to animals. Therefore, this statement is TRUE.Statement 26: Estuaries have a high deposition of nutrient as it includes the nutrient from the freshwater lakes and rivers as well as the nutrients from the sea and ocean. Hence, this statement is FALSE.Statement 27: The aquatic plants and shallow water provides good hiding places and protection to the eggs of many animals. Proving it to be an excellent nursing ground away from predators, this is the reason it is called the cradle of the ocean. Therefore, this statement is TRUE.Statement 28: The intertidal zone is an area where the ocean meets the land during high and low tides. Since estuaries are located at the bank of the ocean, therefore, it is a part of the intertidal zone. Hence, this statement is TRUE.Statement 29: Estuaries have a stable temperature ranging between 13 degrees Celsius to 60 degrees Celsius. Estuaries have a stable salinity of 0.5 to 35 ppt and are located at a safe tide zone. Therefore, this statement is TRUE.For more information:
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How does a medicine like Benadryl (a medicine taken to suppress allergy symptoms) affect the immune system?
AG CLASS
Which of the following professionals would a city hire to oversee the trees in its parks and street plantings?
pomologist
viniculturist
arborist
botanist
[tex]\huge{\textbf{\textsf{{\color{pink}{An}}{\red{sw}}{\orange{er}} {\color{yellow}{:}}}}}[/tex]
Botanist
Answer:
Hello There!!
Explanation:
I think the answer is arborist because arborists are like tree surgeons.
hope this helps,have a great day!!
~Pinky~
The property of water in which water resists in changing it's temperature is called
capillary action
surface tension
universal solvent
high specific heat
Answer: high specific heat. Brainliest??
Explanation:
Research the effect of insulin on blood sugar after a meal. You may use outside sources. Select the correct statement. Insulin has no effect on blood sugar. Insulin increases blood sugar. Insulin reduces blood sugar.
Answer:
Insulin reduces blood sugar.
Explanation:
Insulin is an hormone produced naturally in the pancreas organ of the body. Insulin is majorly involved in digestion where it helps in the absorption process. Insulin aids the absorption of glucose by cells.
When a meal is eaten, the food digests and breaks down into GLUCOSE, which enters into the blood stream via the small intestine. Insulin ensures that the sugar (glucose) content in the blood REDUCES by moving glucose into cells for respiration (energy production) and storing the excess glucose as glycogen in the liver cells.
Please, serious answers only, don't search it up. Can an animal adapt into a new species? If so, why?
Answer:
Hi how are you doing today Jasmine
Answer:
Yes, an animal can adapt into a new species through a process called speciation. Speciation occurs when a population of animals undergoes significant changes over time, leading to the formation of a new species that is different from the original one.
Explanation:
REASONThe main reason for this adaptation and the emergence of a new species is natural selection. Natural selection is the process by which individuals with advantageous traits are more likely to survive and reproduce, passing on those traits to their offspring. Over many generations, these advantageous traits become more common in the population, while individuals without these traits become less common.
When a population of animals faces different environmental conditions or habitats, it can create diverse selection pressures. Some individuals may possess traits that allow them to better adapt to these new conditions, giving them a higher chance of survival and reproduction. As these advantageous traits become more prevalent in the population, they can eventually lead to reproductive isolation.
Reproductive isolation occurs when individuals from the original population can no longer mate and produce fertile offspring with individuals from the newly adapted population. This can happen due to genetic differences and changes that have accumulated over time. When reproductive isolation is complete, the two populations are considered separate species.
SUMMARYOverall, the process of adaptation and the formation of new species is driven by natural selection, which favors traits that enhance an organism's chances of survival and reproduction in specific environments. Over time, these changes can accumulate, leading to the development of distinct species.
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Why does the the right testicle hang lower than the left?? PLease help i will be thank (Sorry english second language if your wondering why my grammar might be a little off. I formally apologize for any confusion the weird spelling. )
it is entirely normal for one testicle to be bigger than the other. Many people find that the right testicle is slightly larger and the left hangs lower. A difference in size is usually nothing to worry about, though it can occasionally indicate a problem.
This is perfectly normal and nothing to worry about. Either side may be slightly larger or hang lower. But be sure to tell a parent (who will let your doctor know) if you have any pain, swelling, or lumps in your testicles.
When a vein in a testicle becomes enlarged, it's called a varicocele. Varicoceles affect up to 15 percent of males. Like varicose veins in your legs, varicoceles may appear bulgy under the skin of your scrotum. They tend to form in the left testicle because the vein on the left side hangs lower.
In drosophila the anterior-posterior axis is established bya. The distribution of the RNA-binding transcription factor called bicoid and the protein nanos localized in the anterior and posterior poles of the embryo, respectivelyb. The distribution of a gene that codes for an RNA-binding protein called nanos localized in the anterior pole of the embryo and a transcription factor called bicoid localized in the posterior pole of the embryo
Complete question:
In Drosophila the anterior-posterior axis is established by
a. The distribution of the RNA-binding transcription factor called bicoid and the protein nanos localized in the anterior and posterior poles of the embryo, respectively
b. The distribution of a gene that codes for an RNA-binding protein called nanos localized in the anterior pole of the embryo and a transcription factor called bicoid localized in the posterior pole of the embryo
c. The distribution of a gene that codes for an RNA-binding protein called nanos localized in the posterior pole of the embryo and a transcription factor called bicoid localized in the anteror pole of the embryo
d. The distribution of the RNA-binding transcription factor called bicoid and the protein nanos localized in the posterior and anterior poles of the embryo, respectively
Answer:
c. The distribution of a gene that codes for an RNA-binding protein called nanos localized in the posterior pole of the embryo and a transcription factor called bicoid localized in the anterior pole of the embryo
Explanation:
When the Drosophila zygote develops, it goes through different stages until it gets to the blastula stage. At this point, there are pole cells that determine the axis of the organism -the anteroposterior and the dorsoventral axis-.
A two hours old embryo has already determined its two axes. A ten hours old embryo has already determined its body segments. And from there, each of them develops a structure that turns to be their identity.
Different genes determine the polarity of the egg.
Dorsoventral genes place in the superior and inferior parts of the egg and determine the development of dorsal and ventral tissues.
The same happens with anteroposterior genes.
The BICOID genes place in the anterior part of the egg and activate the hunchback genes that determine the development of the head and the thorax. The Bicoid mRNA distributes in the anterior region of the egg.The NANOS gene reprimes the hunchback genes, which promoted the development of the posterior structures of the body. The Nano mRNA places in the posterior region of the egg, and Nano proteins distribute in this area.The polarity genes of the egg are genes of maternal effects.
While the bicoid and nano genes are expressed in the ovary, the hunchback gene is expressed in the embryo. This last one is activated or inhibited by the foreign ones.
Bicoid and nano genes gradient regulate the expression of the gap, pair-rule, and segment polarity genes.
please help me :( this is due in 5 mins.
A segment of DNA strand has the following bases:
TAC GAT
What is the complementary strand of mRNA?
A: UAG CAU
B: TAG CAT
C: ATG CTA
D: AUG CUA
Answer:
is D: AUG CUA
Explanation:
.
What is a blastula?
a hollow ball of cells
a hollow tube of cells
a solid ball of cells
a long sheet of cell
Explain how soil erosion may contribute to famine.
PLEASE HELP
Answer:
Soil erosion inhibits our ability to grow nutritious food. Causeing a food shortage which will lead to a famine.
Explanation:
Artesian springs bring pressurized groundwater to the surface through which feature of Karst topography?
streams
caves
fissures
igneous rock
Answer:
The correct answer is D) Fissures
Explanation:
Karst is a topography or landform that is created by the dissolution of soluble rocks beneath the surface by waters from the surface or below.
Fissures are formed when because of earth movements there is the occurrence of a long, narrow opening, in the earth.
Artesian springs refer to the water coming out through these cracks or openings in the earth onto the surface of the Karst topography.
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Which cells in the body are targeted by HIV?
red blood cells
platelets
B cells
T cells
As a student how can you uphold the Sustainable Development Goals amidst the current environmental situation our country is facing?
7. Pedialyte is a beverage which contains the same concentration of ions (K , Cl-, and Na ) as found in the plasma. Gatorade and Powerade mimic (although are not identical to) Pedialyte. Therefore, we might expect that consumption of Pedialyte should not significantly alter the osmolarity of the blood. How would you expect the urine production rate in the Pedialyte group to compare to that of the water group
Answer:
Less urine production.
Explanation:
The urine production rate in the Pedialyte group is lower as compare to that of the water group because the presence of K, Cl-, and Na ions. The precise combination of electrolytes and sugars in Pedialyte helps in restoring fluid levels and the nutrients in the body that are lost through sweating, urinating, or vomiting and diarrhea. We know that the presence of sodium ions regulation water and electrolyte balance in the body so there is less urine produced by taking Pedialyte group.
The urine production rate in the Pedialyte group to compare to that of the water group -
Pedialyte group - decreased
water group - increased.
The rate of urine output is the urine production in a unit of time. The normal range of urine output is 800 to 2,000 milliliters per day if you have a normal fluid intake of about 2 liters per day.
Drinking Pedialyte increases the ion concentration in the plasma that causes hyperosmolarity. This is sensed by the hypothalamus and releases ADH that leads to more fluid absorption in later DCT and collecting tubules that leads to decrease urine output. On the other hand, if you drink water, hypoosmolarity in blood plasma which does not sense by the hypothalamus and does not release ADH, and the urine output is more than the previous case.Thus,
The urine production rate in the Pedialyte group to compare to that of the water group -
Pedialyte group - decreased
water group - increased.
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What makes the distribution of traits in a population change?
Answer:
The Genetic Variation in a Population Is Caused by Multiple Factors. Genetic variation describes naturally occurring genetic differences among individuals of the same species. This variation permits flexibility and survival of a population in the face of changing environmental circumstances.
Explanation:
The distribution of traits in a population are subject to change due to genetic variations and the environmental factors. Mutations also play an important in change of traits in a population.
What are mutations?Mutations are described as the sudden change or variation in the heredity material - DNA of an individual. Mutations leads to change in the genetic composition of an individual. Such mutations can be favourable by the environment or can be discarded by the nature or remain unaffected.
Mutations can occur during the cell-division or during the replication of DNA. It can be also occur due to some external agents. The occurrence of mutation is not predicted however it is identified only after a considerable change is observed in the phenotypic character of an individual.
Mutations are of four main types:
Point mutationsChromosomal mutationsSomatic mutationsGerm line mutationsThus, there are various agents that probably cause mutations upon exposure. Such agents are called mutagens.
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which characteristics of living things occur when a butterfly sucks nectar from the nectary of a flower
Answer:
Because butterfly helps in asexual reproduction in plants and nutrition for butterfly
Explanation:
A young woman was going on a walk through the woods when she felt a mosquito bite her. She has a history of large local reactions to mosquito bites in the past. The reactions have been so severe she has even been skin tested, but the test came out negative. After the most recent bite, she went back to the doctor complaining of swelling at the site, dizziness, headache, and nausea. Benadryl is able to help relieve some symptoms. The doctor decides to try a blood test (i.e. ELISA based test) instead to test for allergies.
Required:
a. What is an ELISA test and how is it done?
b. Which antibody would they be looking for specific in this case?
c. The doctors also ran an SDS-PAGE test using the patient's serum mixed with two different antigens: lane 1 - bee venom; lane 2 - mosquito venom. What do the results show regarding the patient’s allergies?
d. Why are there two dark blue bands in lane 2?
e. Describe what happens during this specific type of allergic reaction.
Answer: uhh
Explanation: i need points
Only a single drop of water is needed to make a smear?
a. True
b. False
Answer:
true,only a single drop of water can cause a smear
Can someone help me ASAP!!!
Answer:
rrkufhjgfyrugf5td89yed/learningnice.com/ffiuvfk/answer
Explanation: u can find the answer there
The method to determine if an event or object is older or younger by comparing the rock layers is called [BLANK] dating as it does not give an actual age in years.
Answer:
radiometric dating methods
The ___ is a warm ocean current that warms up the east coast of the united states and parts of europe
A.Current
B.Jet stream
C.Gulf stream
D.El nino
Ez La nina
Answer:
C. Gulf Stream
Explanation:
A researcher performs an experiment to test a hypothesis that involves the nutrients niacin and retinol. She feeds one group of laboratory rats a daily diet of precisely 125.6 units of niacin and 5,400 units of retinol. She uses two types of commercial pellet food. Food A contains 0.86 units of niacin and 30 units of retinol per gram. Food B contains 0.66 units of niacin and 40 units of retinol per gram. How many grams of each food does she feed this group of rats each day
Answer:
- 100 grams of food A (x)
- 60 grams of food B (y)
Explanation:
According to this question, the group of laboratory rats are being fed a daily diet of:
- 125.6 units of niacin and 5,400 units of retinol
Let x represent the number of grams needed for food A.
Let y represent the number of grams needed for food B.
This means that:
Food A: Niacin = 0.86x, Retinol = 30x
Food B: Niacin = 0.66y, Retinol = 40y
Since there are 125.6 units of niacin fed to the rats in total, then;
0.86x (A) + 0.66y (B) = 125.6
Since there are 5400 units of retinol fed to the rats in total, then;
30x (A) + 40y (B) = 5400
Solving these two equations simultaneously using elimination method:
0.86x (A) + 0.66y (B) = 125.6 ........(eqn 1)
30x (A) + 40y (B) = 5400 ............ (eqn 2)
Multiply eqn 1 by 30 and eqn 2 by 0.86
30 × 0.86x + 0.66y = 125.6
0.86 × 30x + 40y = 5400
25.8x + 19.8y = 3768 ............ (eqn 3)
25.8x + 34.4y = 4644 ........... (eqn 4)
Subtract eqn 3 from eqn 4
14.6y = 876
Divide both sides by 14.6
y = 876/14.6
y = 60
Substitute value for y (60) into eqn 2
30x + 40y = 5400
30x + 40(60) = 5400
30x + 2400 = 5400
30x = 5400 - 2400
30x = 3000
x = 3000/30
x = 100
Therefore, she feeds the group of rats 100grams of food A (x) and 60 grams of food B (y).
Which of the following is not a characteristic of enzymes?
Each is used to break down substances.
Each has a specific substrate.
Each has an optimal temperature and pH.
O
Each has an active site.
Answer:
Each is used to break down substances.
Explanation:
Enzymes merely speed up a chemical reaction, not necessarily break down substances.
Each enzyme is used to break down substances is not a characteristic of enzymes. The correct option is A.
Thus, enzymes aren't just utilized to degrade things. Enzymes perform additional crucial tasks in addition to being essential for the breakdown (catabolism) of substances. In living things, enzymes operate as biological catalysts to quicken chemical processes.
Enzymes achieve this by reducing the activation energy needed for a reaction to happen and thereby speeding up the reaction rate. While some enzymes are engaged in the breakdown of chemicals, others are involved in the synthesis or modification of other molecules (anabolism).
Thus, the ideal selection is option A.
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Explain how the lymphatic system is adapted for the transportation of the lymph
Answer:
The lymph capillaries feed into larger lymph vessels. The lymph vessels that receive lymph fluid from many capillaries are called collecting vessels. Semilunar valves work together with smooth muscle contractions and skeletal muscle pressure to slowly push the lymph fluid forward while the valves prevent backflow.
may we please hel me
Answer: 17. epiglotti. 18. Salt. 19. 37 degrees celsius. brainliest??
Explanation:
If a codon has the nucleotide sequence UGA, what does the corresponding
anticodon have as its sequence?
A) UGT
OB) UGA
C) ACT
D) ACU
Can someone help me with the order of the carbon cycle ?
Answer:
First what is it? Carbon cycle is, nature's way of reusing carbon atoms, which travel from the atmosphere into organisms in the Earth and then back into the atmosphere over and over again. Most carbon is stored in rocks and sediments, while the rest is stored in the ocean, atmosphere, and living organisms.
1.Carbon moves from the atmosphere to plants. In the atmosphere, carbon is attached to oxygen in a gas called carbon dioxide (CO2). Through the process of photosynthesis, carbon dioxide is pulled from the air to produce food made from carbon for plant growth.
2.Carbon moves from plants to animals. Through food chains, the carbon that is in plants moves to the animals that eat them. Animals that eat other animals get the carbon from their food too.
3.Carbon moves from plants and animals to soils. When plants and animals die, their bodies, wood and leaves decays bringing the carbon into the ground. Some is buried and will become fossil fuels in millions and millions of years.
4.Carbon moves from living things to the atmosphere. Each time you exhale, you are releasing carbon dioxide gas (CO2) into the atmosphere. Animals and plants need to get rid of carbon dioxide gas through a process called respiration.
5.Carbon moves from fossil fuels to the atmosphere when fuels are burned. When humans burn fossil fuels to power factories, power plants, cars and trucks, most of the carbon quickly enters the atmosphere as carbon dioxide gas. Each year, five and a half billion tons of carbon is released by burning fossil fuels. Of this massive amount, 3.3 billion tons stays in the atmosphere. Most of the remainder becomes dissolved in seawater.
6.Carbon moves from the atmosphere to the oceans. The oceans, and other bodies of water, absorb some carbon from the atmosphere. The carbon is dissolved into the water.
Explanation: This should help
HELP ME PLEASE!!!!!!
Answer:
C of course
Explanation: