Answer:
Grow the seedlings of oats for Avena coleoptile test in a petri plate and let them germinate in light, so that the coleoptile forms with leaves.Cut the coleoptile stem and add agar block of auxin with different concentrations in all different oat seedlings and expose them to sunlight.Then observe the amount of bending of coleoptile stem towards the light in different samples added with different amount of auxin in the agar slab.
Explanation:
Cultivate oat saplings in a petri dish for the Avena cotyledon experiment and let them germination in light until the coleoptile develops with branches.
Cut the coleoptile stems and place an agar blocks with varying quantities of auxin in each of the oat saplings before exposing them to sunlight.
Next, in separate samples with varied amounts of auxin inside the agar slab, examine the degree of bending of the coleoptile branch more toward the sunlight.
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In humans, hemophilia is sex linked. If a woman is a carrier for the trait, what is the chance that her daughters will also be carriers? (Assume their father is normal.)
What adaptive advantage would a plant have if it contained several pigments instead of just one or two?
Answer:Multiple Pigments Allow The Plant To Have Both Photosynthesis And Cellular Respiration To Maximize The Amount Of Energy They Capture From The Sun. B. Multiple Pigments Absorb Different Wavelengths Of Light, Allowing The Plant To Capture The Maximum ...
Explanation: Do you need more???
I need help plssss :)
Explanation:
2.)Matthaius Scheilden
3.)Theodore Schwann
The answer is below
Were you paying attention in class?
2. Which of the following graphs represents a relation that is not a function?
A
Answer:
D
Explanation:
I just did this and it was D
Which force produces a change in motion
Answer:
Unbalanced force
Explanation:
This force usually causes a change in motion, an example of this is when two forces act in the same direction of an object, the net forces equals the sum of two forces.
Cross the following blood types OO and AB.
What percentage would have O Blood, B Blood, A
Blood and AB Blood?
Answer:
Explanation:
Believe it or not, in this case having a blood type different from either parent is by far the most common result. In most cases, an O parent and an AB parent will have only A or B kids.
What could happen if an organism from the food web disappeared?
Answer:
They would starve and die unless they could move to another habitat. All the other animals in the food web would die too, because their food supplies would have gone. The populations of the consumers would fall as the population of the producer fell.
Explanation:
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They would starve and die unless they could move to another habitat. All the other animals in the food web would die too, because their food supplies would have gone. The populations of the consumers would fall as the population of the producer fell.
What does light years measure
A light-year is how astronomers measure distance in space, hope this helps ^^
Answer:
Light year measures distance in space
Explanation:
it is mostly used to estimate very far distances and so it might take us about 24 million light years to travel to another galaxy and so on
In regard to actin(the thin filaments) and myosin (the thick filaments), how do
muscles contract?
The globular heads of myosin tie actin, framing cross-spans between the good and bad fibers. This development slides the actin fibers from the two sides of the sarcomere toward the M line, shortening the sarcomere and bringing about muscle withdrawal.
Cytosine makes up 30% of the nucleotides in a sample of DNA from an organism. Approximately, what percentage of the nucleotides in this sample will be thymine?
Cytosine (C)
30%
Guanine (G)
Thymine (1)
?
Adenine (A)
Answer:
c
Explanation:
What does an increased pulse rate indicate about the heart rate
Answer:
A high heart rate can also mean the heart muscle is weakened by a virus or some other problem that forces it to beat more often to pump enough blood to the rest of the body. Usually, though, a high heart beat is not due to heart disease, because a wide variety of noncardiac factors can speed the heart rate.
The pancreas produces three digestive enzymes: Amylase breaks down complex carbohydrates into simple carbohydrates (sugars), trypsin breaks down proteins into amino acids, and lipase breaks down fats into fatty acids and monoglycerides. How did adding the pancreas affect sugar production and what evidence is there for this
Answer:
It helped us store and breaking down carbohydrates.
Explanation:
The pancreas helps in the deconstruction or breaking down of the three basic nutrient groups, carbohydrates, proteins and fats, when the body breaks down these components its able to create new cells or to give power to the muscles.
The body absorbs the nutrients from food, and with the addition of the pancreas the human body was able to break down these nutrients even more and store them and take better advantage of them.
Which air mass would produce cold, dry weather in the winter?
Answer:
The correct answer is - Continental polar air mass. The continental polar air masses are very big air masses that are very cold, and dry
Answer:
Continental Polar Air Mass
Explanation:
The continental polar air masses are vey big air masses that are very cold, and dry.
The movement of a fluid, caused by differences in temperature, that transfers heat from one part of the fluid to another
Convection
Conduction
Convection Current
Radiation
Answer:
Convection Current is the answer.
Explanation:
How does dredging impact fish living in an estuary?
Answer:
Dredging impacts marine organisms negatively through entrainment, habitat degradation, noise, remobilization of contaminants, sedimentation, and increases in suspended sediment concentrations
A peony plant with straight stamens and red petals was crossed with another plant having straight stamens and streaky petals. The seeds were collected and germinated and the following offspring were obtained 62 straight stamens with red petals 59 straight stamens, streaky petals 18 incurved stamens, red petals 22 incurved stamens, streaky petals a) Which alleles in each pair are dominant
Answer:
Explanation:
From the given information.
Let the Straight stamens be S;
The incurved stamens be s;
The red petals be R; and
The streaky petals be r
The genotype of the parental plants are Straight stamens, red petals (SsRr) and Straight stamens, streaky petals)
So if SsRr and Ssrr crossed together, Then we have the following:
If SsRr self crossed, we have the following traits = SR Sr sR sr; &
Ssrr = Sr Sr sr sr
Then, the dihybrid cross is:
SR Sr sR sr
Sr SSRr SSrr SsRr Ssrr
Sr SSRr SSrr SsRr Ssrr
sr SsRr Ssrr ssRr ssrr
sr SsRr Ssrr ssRr ssrr
P(Straight stamens, red petals) = 8/16
P(Straight stamens, streaky petals) = 6/16
P(Incurved stamens, red petals ) = 2/16
P(Incurved stamens, streaky stamens) = 2/16
When you hear digestive what do you think of
Answer:
The part of you body that works to ground food properly and is one of the major ways the body cycle works
Explanation:
Answer:
When I hear digestive i go straight to thinking about your body breaking down food and giving your body nutrience
Plants and animals can cause physical weathering.
Answer:
True
Explanation:
Tree roots that grow into crevices and small animals that burrow can cause physical weathering.
Which substance is hydrophilic? Cellulose, testosterone, butter, cholesterol
Someone please help me
Answer:
mass and volume
Explanation:
Matter is anything that has mass and takes up space
What is the volume of each object if the mass is 117g and density is 18g/cm?
6.5cm^3
Explanation:
since density =mass/volume,
volume=m/d
v=117/18
v=6.5
Smokers, alcohol abusers, overweight and obesity men are more
likely to have sperm which are?
Answer:
fewer in number.
Explanation:
A low sperm count also known as oligospermia can be defined as a medical condition which typically involves a man (adult male) having fewer than 15 million sperm per millilitre of semen.
Basically, low sperm count (oligospermia) is usually caused in men due to health and lifestyle factors such as smoking, alcohol or drug abuse, obesity, genetics, sexually transmitted infections (STIs), age etc.
Hence, smokers, alcohol abusers, overweight and obesity men are more likely to have sperm which are fewer in number i.e fewer than 15 million sperm per millilitre of semen.
Generally, a healthy or normal sperm motility ranges from over 20 million to 200 million sperm per millilitre of semen.
how does a birds digestive system work?ФΔФ
Answer:
Birds have a two part stomach, a glandular portion known as the proventriculus and a muscular portion known as the gizzard. Hydrochloric acid, mucus and a digestive enzyme, pepsin, are secreted by specialized cells in the proventriculus and starts the process of breaking down the structure of the food material.
Describe: Fossil fuels are used in many ways. Using the Gizmo, describe the main use for each fuel.
Coal:
Petroleum:
Natural gas:
In each case, what is the end product of burning the fossil fuel, and where does it go?
Answer:
Coal:
Coal is primarily used as fuel to generate electric power
Petroleum:
heating and electricity generation, asphalt and road oil, and feedstocks for making the chemicals, plastics, and synthetic materials
Natural gas:
heating, cooking, and electricity generation.
it all end up in the atmosphere
Explanation:
The coal is burned and the heat given off is used to convert water into steam, which drives a turbine.
petroleum was formed from the remains of ancient marine organisms, such as plants, algae, and bacteria.
Like oil, natural gas is a product of decomposed organic matter, typically from ancient marine microorganisms, deposited over the past 550 million years. This organic material mixed with mud, silt, and sand on the sea floor, gradually becoming buried over time.
Coal and natural gas are burned in power plants to boil water. Steam from boiling water converts turbines into electricity. Carbon dioxide from burning fuel is released into the atmosphere.
This is about description of fossil fuels which are simply fuels that are formed from natural processes.
The uses and end products of fossil fuels are talked about in the explanations below;
1) (I) The primary use of the fossil fuel named coal is to generate electricity.ii) When coal is burnt, it produces a very high heat. This heat is so high that it converts water into high-pressure steam. What drives a turbine is a high pressure steam and this drive makes the turbine to produce electricity.
2) I) Petroleum products are used to set vehicles in motion, for asphalt on roads, production of electricity and heating of buildings.II) when petroleum is burnt to create energy, it produces high amount of carbon dioxide and other toxic gases into the atmosphere that can cause greenhouse effect.
3) I) Natural gas is used primarily as a source of energy for cooking, generating heat and for providing electricity.II) When it undergoes combustion is produces large amount of carbon dioxide and nitrogen oxides into the atmosphere.
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Please help me figure this out I don't understand this.
Answer: The big blue ball is the NUCLEUS, The things with The Rib looking things, Are the MITOCHONDRIA, The green circles are called the APICOPLAST, The outside is called the RBC, You might have to search the rest up because i don't know the rest!
Explanation:
Describe: Using the Gizmo, determine how coal and petroleum (oil) are formed. Describe the steps required to form each fuel from atmospheric CO2.
Coal:
Petroleum:
Answer:
by the following;
Explanation:
Carbon: There are four stages in coal formation: peat, lignite, bituminous and anthracite. The stage depends upon the conditions to which the plant remains are subjected after they were buried – the greater the pressure and heat, the higher the rank of coal.
Petroleum: petroleum is formed when large quantities of dead organisms, mostly zooplankton and algae, are buried underneath sedimentary rock and subjected to both intense heat and pressure.
Which type of plant lives the longest?
Answer:
Great Basin Bristlecone or Pinus longaeva for it's binomial name. Which is known as the Methuselah.
PLEASE HELP ASAP!!!
List two things that can increase genetic variation in meiosis and explain how they can impact the next generation of living things.
Please help :(
Crossing over and random fertilization can increase genetic variation.
What causes genetic variation?There are several causes of genetic variation, including:
Mutations: Changes in the DNA sequence can occur naturally and lead to the creation of new alleles. These mutations can happen spontaneously, or they can be caused by environmental factors such as radiation or certain chemicals.
Crossing-over: During meiosis, chromosomes can swap genetic material with their homologous pairs, leading to the creation of new combinations of alleles.
Independent assortment: During meiosis, the way the chromosomes line up and exchange genetic material can vary, leading to different combinations of alleles being passed on to the next generation.
Random fertilization: In sexually reproducing organisms, the combination of genetic material from sperm and egg cells is random, leading to new combinations of alleles being passed on to the next generation.
Gene flow: The movement of genes from one population to another can lead to the introduction of new alleles into a population.
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What is reduced during glycolysis?
Answer:
There is one redox reaction during glycolysis. The oxidation of glucose begins during glycolysis. NAD+ accepts the electrons during the oxidation, and as a result it gets reduced. A total of 2 NADH are produced.
Explanation:
Answer:
During glycolysis, NAD is reduced
______ is the evaporation of water from plants, especially leaves. It is a type of translocation and part of the water cycle. The amount of water lost by a plant depends on its size, the light intensity, temperature, humidity, wind speed, and soil water supply.
Answer:
transpiration
Explanation:
i am sorry if it is right