Answer:
B
Explanation:
U(uracil) pairs with A(adenine), G(guanine) pairs with C(cytosine)
The total number of chromosomes in an organism is referred to as the
Will mark brainliest
Answer:
ploidy
Explanation:
Ploidy is the number of complete sets of chromosomes in a cell, and hence the number of possible alleles for autosomal and pseudoautosomal genes.
A-Handpicking
B-Sieving
C-Using a Magnet
1. Fine flour and lumpy flour
2. Mixed nuts
3. Sand and gravel
4. Sand and palay
5. Scrap iron and nail
[tex]\huge\mathfrak\pink{answer}[/tex]
1) Fine flour and lumpy flour - B) Sieving
2) Mixed nuts - A) Handpicking
3) Sand and gravel - B) Sieving
4) Sand and palay - B) Sieving
5) Scrap iron and nail - C) Using magnet
(mark me brainliest if you're satisfied with my answer :))
[tex]\large\mathfrak\pink{thank \: you}[/tex]
Where do nutrients enter the body?
Answer:
thru the nucleus or cell wall i think
Explanation:
Answer: The small intestine absorbs most of the nutrients in your food.
Explanation: The small intestine is good for absorption due to it having a large inner surface area.
7. Apply: Look carefully at the picture below and you will see an insect called a
katydid. Katydids evolved from grasshoppers through natural selection. Use
what you have learned to explain how this could have happened.
Answer: This description is an example of camouflage adaptations.
Explanation:
The grasshoppers are the insects which feed on plant parts and they are able to change their color with respect to their surrounding environment. For example, if they are living on the brown tree trunk they change their color to brown and on the green grass or green leaves they change to green to remain undetected by the predators. This way they are able to camouflage their predators this adaptation allows their survival in their environment with due course of natural selection. The phenotypic trait that is grasshopper is able to change its color increases the chances of survival of the grasshopper. Kaytids have evolved from grasshoppers means they have camouflage traits as that in parent grasshopper species. They have structure which blends with surrounding environment, that is they have wings that mimic that of pattern of leaf venation, also when they change the color to brown the shape of the body appears to be as that of stem. This structural adaptation help them to camouflage their predators.
Using the law of superposition and the principle of cross-cutting relationships, which of the layers of rock in this image is younger than layer C and closest in age to layer C?
A: Layer A
B: Layer E
C: Layer D
D: Layer B
Answer:
D. Layer B
Explanation:
The correct answer is Layer B.
The law of superposition actually states that the sedimentary rock unit is at the bottom while the the youngest rock is at the top. The principle of cross-cutting relationships states in layers of rocks, a fault or intrusion that cuts through rock layers is younger than the rocks that it cuts through.
Layer B was actually formed after Layer C. This makes Layer B younger than Layer C and closest in age to Layer C. The intrusion, Layer D is the youngest of all.
Answer:
b
Explanation:
The microtubules that form in prophase and control the chromatids are called___
The primary colors of visible light are:
Answer: red, green and blue
Answer:
Correct / true
Explanation:
Muscle tissues are made of specialized unitss called?
Answer:
Each skeletal muscle fiber consists of a bundle of myofibrils, which are bundles of protein filaments. The filaments are arranged in repeating units called sarcomeres, which are the basic functional units of skeletal muscles.
Explanation:
Answer:
skeletal muscle
Explanation:
which are characteristics of epithelial cells? Select two options.( Answer Needed ASAP)
Answer:
found lining many areas that contact the external environment
plays a role in protection
Explanation:
Explanation: Epithelial tissue is composed of cells laid together in sheets with the cells tightly connected to one another. Epithelial layers are avascular, but innervated. Epithelial cells have two surfaces that differ in both structure and function.
The structure of the plasma membrane is often explained using the "Fluid Mosaic Model". In this model, the term "fluid" best refers to which of the following?
Group of answer choices
all choices are correct
water can move through the plasma membrane
the plasma membrane is made of a liquid
the fact that the phospholipids and embedded structures are free to move
Answer:
ALL OF THE ABOVE
Explanation:
What are the advantages and disadvantages of the serial dilution-agar plate procedure?
Answer:
Advantages
- Serial dilution is used in microbiology to estimate the concentration or number of cells/organisms in a sample to obtain an incubated plate with an easily countable number of colonies.
- In biochemistry, serial dilution is used to obtain the desired concentration of reagents and chemicals from a higher concentration.
- In pharmaceutical laboratories, serial dilution is performed to receive the necessary concentration of chemicals and compounds as this method is more effective than individual dilutions.
- In homeopathy, homeopathic dilutions are used where a substance is diluted in distilled water or alcohol. It is believed than dilution increases the potency of the diluted substance by activating its vital energy.
Disadvantages
- An error might occur during the propagation of the sample, and the transfer inaccuracies lead to less accurate and less precise transfer. This results in the highest dilution to have the most inaccuracies and the least accuracy.
- Because serial dilution is performed in a stepwise manner, it requires a more extended period of time which limits the efficiency of the method.
- Serial dilution only allows the reduction of bacteria/cells but not the separation of bacteria/cells like in other techniques like flow cytometry.
- This technique also requires highly trained microbiologists and experts in aseptic techniques.
12. Identify the stage of mitosis shown here. Describe
the events that occur in this stage.
Spindle
JUST QUESTION 12 please
The chromatids are arranged at the center, with a joined spindle at the metaphase of mitosis.
Mitosis is the type of cell division in which the parent cell divides into two daughter cells.
What are the phases of Mitosis?The mitosis is divided into four phases, namely,
ProphaseMetaphaseAnaphaseTelophaseThe arrangement of the duplicated chromatids at the center plate with the binding with spindle fiber is represented in the metaphase of the mitosis cycle.
Learn more about mitosis, here:
https://brainly.com/question/13536882
Why are most systems in the human body negative feedback systems?
Most systems in the human body are negative feedback systems because negative feedback systems allow humans to regulate and stabilize their systems, which is the first option as a negative feedback system regulates the body's functioning.
What is the negative feedback system?Negative feedback is a regulatory mechanism in which a change in a physiological variable triggers a response that opposes the initial change, for example, in the regulation of body temperature, when the body becomes too hot, thermoreceptors in the skin and other tissues detect the change in temperature and send signals to the hypothalamus, which acts as the body's thermostat and as a feedback mechanism, hypothalamus triggers responses that cool the body, such as vasodilation to increase blood flow to the skin, sweating to release heat, etc.
Hence, most systems in the human body are negative feedback systems because negative feedback systems allow humans to regulate and stabilize their systems, which is the first option.
Learn more about the negative feedback system here.
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A fruit fly has a recessive allele for no eyes (e). Two heterozygous fruit flies with eyes are crossed. What is the total number of different genotypes possible among their offspring?
A. 1
B.3
C.4
Answer:
C
Explanation:
plesss help me I'm in die mode right now ples helpp
Answer:
The last one- both yeast show increasing growth at increasing temperature of 25 or less
Explanation:
The other 3 arent true from what the graph shows. and after 25 they grow/fall at differnet rates.
Answer and I will give you brainiliest
Answer:
Answer is in picture.
Explanation:
Hope it is helpful.....
Resting a pot on top of a hot
stove causes the pot to become
hot. What method of heat
transfer is happening here?
Answer:
Conduction
....
.........,...............
What would the complementary strand of GTCCGTAACGTAT be?
Answer:
CAGGCATTGCATA
Explanation:
Given: GTCCGTAACGTAT
Under Chargaff's rule, Adentine is equal to Thymine, and Cytosine is equal to Guanine. (A=T, C=G)
Emilia Burton is an 18-year-old high school student who began to experience weight loss despite a ravenous appetite and resulting increased dietary intake. She has to make frequent trips to the bathroom to urinate and has difficulty concentrating on her work because of fatigue. She drinks large volumes of coffee to help with a constant dry mouth and to combat her fatigue. At a clinic appointment, it was noted that her weight has dropped from 140 lb to 128 Ib.
a) What is the probable diagnosis of this patient? What information from the above scenario would support your diagnosis?
b) What laboratory test(s) should be performed? Which result(s) would support your diagnosis? What immediate and long-term therapy will Emilia need to manage her disorder?
c) Emilia should be aware of the potential acute and long- term complications of her condition. What are they?
Answer:
A) The diagnosis is Diabetes mellitus which is based on the given symptoms that are weight loss, dry skin, fatigue, profuse urination, ravenous hunger all confirm diabetes.
B) Test for confirmation of diabetes Mellitus are-
Fasting plasma glucose test
Postprandial glucose test
Random plasma glucose test.
A1C test
If the test shows higher blood glucose it confirms the diagnosis
Immediate Treatment:-
Medication
Long term treatment:
Exercise controls the blood sugar
Diet should be healthy and should avoid high glucose options.
C) Acute and long term complications:-
Diabetic retinopathy
Diabetic foot
Diabetic neuropathy
Coronary heart disease
Kidney damage
Cerebrovascular disease.
You are studying brain cells and you discover a protein neurotransmitter that you
think might be useful. You know the amino acid sequence of the neurotransmitter.
Explain:
a) how you would isolate and identify the neurotransmitter gene
b) how you would produce multiple copies of the gene for study
c) how you would produce large quantities of the neurotransmitter to see if it could be
used as a potential medication.
e
B. Population Dynamics Symbiotic Relationships
Ticks
Ticks belong to a family called Acarina, which also contains mites. Ticks eat by taking blood from
other organisms such as wallabies, lizards, echidnas and occasionally humans. In humans this can
lead to symptoms such as itching, head aches and in extreme cases flu like symptoms, facial
paralysis, and meat allergy.
1. Identify the relationship a tick has with its host. Justify your answer [3]
Answer:
Parasitism
Explanation:
Parasitism is a form of relationship in which one of the organism is being harmed while the other benefits. The organism being harmed is usually called the HOST while the organism that benefits is called PARASITE. Parasites often inflict certain health-related conditions on their hosts.
According to this question describing the mode of feeding of ticks, they are said to eat by taking blood from other organisms such as wallabies, lizards, echidnas and occasionally humans, which are all HOSTS.
In human hosts, this relationship with ticks can lead to symptoms such as itching, head aches and in extreme cases flu like symptoms, facial paralysis, and meat allergy etc. From the description above, it is clear that TICK has a PARASITIC RELATIONSHIP with its host as it brings only harm to them and benefits itself.
Why aren't there many large carnivores?
Answer:
Technically, the largest ever marine predator known thus far - the blue whale - is, for now, alive and well, but I know what you mean. You’re not talking about filter-feeders, or fish-eaters, you mean macropredators.
The last truly enormous macropredator in our oceans was probably Carcharocles megalodon, which went extinct about 3.6 million years ago. Other recent examples include the terrifying sperm whale Livyatan melvillei (which disappeared 8.9 mya) and other megatoothed sharks like C. chubutensis.
So, why did the giants go away? The answer, in truth, is likely multi-faceted. Here are some major promising hypotheses, or at least contributing factors:
Whales have declined. Giant sea carnivores like C. megalodon and Livyatan relied on marine mammals - specifically baleen whales. During the Pliocene, the Americas connected and the Central American Seaway was closed. This seems to have triggered a significant decline in the diversity of tropical whales, and would thus limit food availability for huge, energy-hungry predators.
Things got too cold. The extinction of megalodon and other giant ocean predators roughly coincides with the trend of decreasing temperatures the Pliocene brought. Giant sharks in particular, not being fully warm-blooded, would suffer from this, and it would also mean a decline in food supply. You can even see a sudden cold snap just about when Carcharocles went extinct, 3.6 mya.
Smaller predators outcompeted them. The niche of Carcharocles and the macroraptorial sperm whales is arguably still filled today - by the killer whale. Many orca pods specialize in hunting whales or other marine mammals. However, killer whales and their ancestors were perhaps more opportunistic, fast, intelligent and indeed adaptable than the massive, solitary hunters.
Ironically, the largest ever marine predator owes its existence to the demise of the largest ever marine macropredators. Since the extinction of macroraptorial sperm whales and Carcharocles megalodon, baleen whales have been gradually increasing in size, for they no longer need to be as fast and agile. Because of this, we have the privilege of sharing our world with the largest animal known to have ever lived - the blue whale.
Determine the rate of oxygen consumption at each temperature for comparison. Then divide the higher rate by the lower rate to obtain the difference (ratio) between the two temperatures. Round your answer to the nearest 0.1. It can be concluded that mouse respiratory rate (increases or decreases) when temperature is lowered. In this experiment there was a fold difference in respiratory rate at the two temperatures.
Answer:
In mice rate of respiration increases as the temperature drops.
Explanation:
As the temperature decreases, the respiration rate also decrease because the body needs less oxygen for the production of energy. But in the case of mice, the rate of respiration decreases and the reason is the fear. Results showed that the respiration increased in mice as the decrease in temperature occur, caused due to the fear instilled in the mice towards cold temperature so in mice rate of respiration increases as the temperature drops.
What is active transport?
Answer:
the movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy.
Explanation:
Which substance has a low albedo?
A. A black asphalt road
OB. A beach of white sand
O O O
C. A shiny building
D. An iceberg
which organelle breaks down sugar molecules that supply energy to the cell
Answer:
Mitochondria
Explanation:
Which characteristic of life best describes the process of homeostasis?
responding to the environment
reproducing
growing and developing
using energy
Answer
A. responding to the environment
Answer:
and using energy
Explanation:
the guy on ed told me
PLZ HELP ASAP
MARKING
The image here shows potential outcomes for chromosomes at a particular stage of meiosis. Which questions appropriately assess what is happening in the image. Select ALL that apply.
A) How does crossing over increase the outcome of meiosis?
B) How does fertilization increase genetic diversity in a diploid organism?
C) How does independent assortment increase genetic diversity during meiosis?
D) How many potential combinations result from chromosomes alignment during metaphase I?
E) How does chromosome methylation result in silencing specific genes during gamete formation?
According to the random arrangement of homologous chromosomes in the equatorial plane, the correct question is D) How many potential combinations result from chromosomes alignment during metaphase I?
How does the random arrangement of tetrads occur?During metaphase 1, chromosomes' homologous pairs migrate to the equatorial plane. Once there, they randomly aline facing their kinetochores to the opposite poles.
The random arrangement of tetrads is different in every cell going through the meiosis process. This is because there is no equal alinement between two cells.
When tetrads arrange in the equatorial plane, there is no predetermined order. Each homologous chromosome of each tetrad faces any of the poles and then migrates to it while separating. Each of the chromosomes has two possibilities for orientation at the plane.
When the new haploid cells are formed, the number of variations in each cell is also different and depends on the chromosomes that form that cell.
This random order in the equatorial plane is what introduces variation into the gametes.
The correct question is D) How many potential combinations result from chromosomes alignment during metaphase I?
You can learn more about the random arrangement of homologous chromosomes at
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Answer:
C and D
Explanation:i just did the problem on USA test prep
how is spark formed, and why might a spark start an explosion?
Answer:When the applied electric field exceeds the dielectric breakdown strength of the intervening medium, a spark is generated. In a mechanism known as dielectric breakdown, the exponentially increasing electrons and ions allow regions of the air in the gap to become electrically conductive.
An electrostatic spark causes the blast. The sudden rise in temperature that occurs as the mixture ignites causes a massive increase in gas pressure. The ensuing increase in pressure could collapse the chamber with a noisy explosion if the burning vapour were to be trapped.
Explanation: