Answer:
Explanation:
Based on their size and charge, the molecules will travel through the gel in different directions or at different speeds, allowing them to be separated from one another.
Which question would be asked in a dichotomous key?
A. How long are the insect's antennae?
B. Are the insect's antennae longer than its head?
C. Are the insect's antennae long or short?
D. How does the insect use its antennae?
Answer:
B. Are the insect’s antennae longer than its head?
Explanation:
Dichotomous key refers to the tool or method which helps the scientist to identify organisms.
It uses a specific series of questions which help in segregation of organisms and ultimately help the scientist to identify the organism on the basis of the observations or properties share by the organism.
Example of a simple dichotomous key is shown below.
Similarly, insects can have antennae longer or shorter than their heads. Thus, the question "Are the insect’s antennae longer than its head?" would help in segregating insects based on their antennae length.
happy to help ya:)
The statement B is correct. Are the insect’s antennae longer than its head?
What do you mean by dichotomous keys?A dichotomous key is an important scientific tool, used to identify different organisms, based the organism's observable traits. Dichotomous keys consist of a series of statements with two choices in each step that will lead users to the correct identification.
Moreover, for example, in tree identification, a dichotomous key might ask whether the tree has leaves or needles. The key then directs the user down one list of questions if the tree has leaves, and a different question list if it has needles.
Therefore, dichotomous keys are useful for biological classification as well as identification. The word dichotomous is derived from the Greek words meaning “two parts.” Each step in the key provides two contrasting choices about a characteristic.
Learn more about dichotomous keys:
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FROM THE LUNGS, BLOOD COMES BACK TO THE HEART. DESCRIBE THE PATH THIS BLOOD FOLLOWS UNTIL IT ENTERS THE AORTA.
Answer:
Tricuspid valve is the path of blood through the heart and lungs
Explanation:
Blood is also responsible for transiting the blood and nutrients. The blood reached right atrium and from here it reached the right ventricles with the help of tricuspid valve. When the ventricles are full it closes to stop blood from going back to the atrium.
The inferior and the superior vena cava let the blood enter through them. The heart left the blood with the help of pulmonary valve to the pulmonary artery and the blood reached the lungs.
Why do fatty foods take longer to digest than sweets?
Answer:
Fat digests more slowly than other foods and is energy-dense, packing more calories per ounce than other foods
As in mitosis, in Meiosis the chromosomes move toward opposite poles of a cell in____.
Answer
The chromosones move toward opposite poles of a cell in Anaphase
How would pH levels decrease due to production of fatty acids
Answer:
Fatty acid synthesis is the creation of fatty acids from acetyl-CoA and NADPH through the action of enzymes called fatty acid synthases. This process takes place in the cytoplasm of the cell. Most of the acetyl-CoA which is converted into fatty acids is derived from carbohydrates via the glycolytic pathway.
Why is it necessary for plants to adapt?
Answer: So they can live and grow.
Explanation: Plants have adaptations to help them survive (live and grow) in different areas. Adaptations are special features that allow a plant or animal to live in a particular place or habitat. These adaptations might make it very difficult for the plant to survive in a different place.
BIOLOGY EXPERTS!!!! Shared core processes support the relatedness of all eukaryotes. Discuss how chromosome structure and function provides insights into the history of life on Earth.
Answer: Many eukaryotic organisms are related based on the shared core characteristics and processes.
Explanation:
The following are the shared core processes shared by all eukaryotes.:
1. Cytoskeleton: It is a network of structural proteins, that helps in movement of cell and organelle support.
2. Membrane-bound organelle: Mitochondria and chloroplast are organelles that formed via endosymbiosis these are present in all eukaryotic organisms.
The DNA is the basic genetic material that is found in almost majority of living beings on earth. The DNA is being transmitted from the primitive organisms on earth to the modern day organisms. The chromosomes are the carriers of DNA. These chromosomes are passed from the parents to the offsprings through reproduction. This is the basis of relatedness among organisms and these are also considered while studying the phylogenetic relationships.
A peacock and a turkey mate, producing a viable but infertile turcock. This is an example of:
A.gametic isolation
B.hybrid inviability
C.behavioral isolation
D.hybrid sterility
E.hybrid breakdown
Answer:
E. breakdown
I am not sure
plz help!!!!!!!! A natural biological cooling process is sweating. Using your knowledge of endothermic and exothermic, explain why your body feels cooler when it sweats.
Answer and Explanation:
An exothermic reaction takes place when heat flows out of a system into its surroundings. ... When you sweat, the system – your body – cools down as perspiration evaporates from the skin and heat flows to the surrounding area. This means sweating is an exothermic reaction.
How are plants pollinated?
Answer:
People can transfer pollen from one flower to another, but most plants are pollinated without any help from people. Usually plants rely on animals or the wind to pollinate them. When animals such as bees, butterflies, moths, flies, and hummingbirds pollinate plants, it's accidental. hope that helps love!!
Which is NOT a reason that a cat or dog owner should take his pet to a veterinarian to get vaccinated against the rabies virus?
A. to fool the pet's body into developing rabies antibodies
B. to protect the pet's body from developing rabies antibodies
C. to introduce a weaker form of the rabies virus in the pet's body
D. to protect the pet's body from future invasions of the rabies virus
what are 3 things that are not nucleotides in science
Answer: plants , water , and rocks
Explanation:
Which life-forms appear to be extinct?
a. Sponges, Insects, and flowering plants.
b. Bony fishes, dinosaurs, and mammals
c. Sponges, insects, reptiles
d. trilobites, ammonoids and dinosaurs
Which life-form was most abundant 250 million years ago?
a. dinosaurs
b. reptiles
c. bony fishes
d. trilobites
Answer:
D for the first question and B for the second
Explanation:
trust
Answer:1.) D (trilobites, ammonoids and dinosaurs)
2.) B (reptiles)
Explanation:
Based on the graft
Why do you think there is a ring with a dark gap within the body of the wood?
The hip bone of a whale and the appendix of a human are referred to as ______because they have little current importance but were important in the
ancestors of these organisms.
A.embryological structures
B.homologous structures
C.vestigial structures
D.mystery structures
E.analogous structures
In the United States, the moon’s pull is strongest during which season?
1. spring
2. summer
3. fall
4. winter
Explanation:
Gravitational pull is affected by mass and distance. Since the moon’s mass does not change, the moon’s distance between Earth and the moon is the main consideration for the strength of lunar gravity. The moon’s pull on Earth waxes and wanes as the moon follows its elliptical orbit around the Earth, the distance between the two celestial objects increases and decreases. When they are nearest to each other, the moon is in the point of its orbit called the perigee, and its pull on Earth is the strongest.
On Earth, the moon’s gravity primarily is manifested as high and low tides, as the water bulges toward the moon. The effects of lunar gravity are felt the most at the constantly changing spot on Earth that is directly beneath the moon, called the sub-lunar point. At most times of the year, the moon has a greater pull on Earth than the sun does, but this changes during the times of year when the Earth’s orbit brings it closer to the sun. At these times, the sun’s gravitational pull causes spring tides, and when these coincide with the moon’s orbital perigee around the Earth, they are called perigean spring tides.
Earth exerts a gravitational pull on the moon 80 times stronger than the moon’s pull on the Earth. Over a very long time, the moon’s rotations created fiction with the Earth’s tugging back, until the moon’s orbit and rotational locked with Earth. This is called "tidal locking," and it explains why the same side of the moon always faces the Earth.
Answer: The correct answer is 1. spring
Explanation: Confirmed correct.
Based on the pedigree that is shown above, how to describe Fred?
Answer:
The given pedigree analysis shows sex-linked trait where the female work as a carrier and have X linked recessive gene that is [tex]X^{h}[/tex] and the male is normal.
So, Fred will be a male with [tex]X^{h}[/tex][tex]Y[/tex] gene and Fred will be affected with X linked disease which is carried by female.
If, [tex]X^{h}[/tex] gene in the female (Ann) act as a carrier of hemophilia and the male (John) is normal, then Fred will be a male affected with hemophilia (sex linked disease).
Hence, Fred will be affected male with [tex]X^{h}[/tex][tex]Y[/tex] genotype.
The 1918 influenza epidemic killed between 50 million and 100 million people worldwide. This epidemic happened near the end of World War I. More people died from the influenza epidemic than were killed in the war. Which of the following explains why this virus was so deadly worldwide? Your answer: A.All of the answer choices B.Infected soldiers returning from the war spread the virus when they coughed. C.Medical personnel often became ill as a result of exposure to airborne virus particles.
Answer:
CExplanation:
medical personnel often became ill as a result of exposure to airborne virus particles.
Responding to the environment is a characteristic of life best shown by which example
Answer:
there are no examples provided
Explanation:
sorry I can't help without the examples
What is the difference between sedimentary and metamorphic rock?
A student made a model of an onion skin cell she viewed using a microscope. The scale is 1:500.The students cell model has a length of 15cm. How many centimeters is the real cells length?
Answer:
Length of the real cells = 7500 cm
Explanation:
A scale model is a physical representation of an object that has the same aspects as that of the object.
A scale model can be used in fields like engineering, film making, salesmanship, etc
Length of the student's cell model = 15 cm
The scale is [tex]1:500[/tex]
So,
Length of the student's cell model / Length of the real cells = [tex]1:500[/tex]
15 / Length of the real cells = [tex]1:500[/tex]
Length of the real cells = 15 × 500 = 7500 cm
Answer:
7500 cm
Explanation:
we in the same grade problem i am on this test
What is one function of plant stems?
to transport water and food
to absorb food from soil
to release water into the air
to take in minerals from soil
I think the answer would be
A) to transport water and food
what are 4 effects of global warming
The four effects of Global Warming are mentioned above. But there are also many effects of Global Warming.
What structures are parts of the central nervous system? Select all that apply.
The brain and the spinal cord
so A and C
Please Help Mark and Vikki live in two different areas of North America. The temperature in Mark’s town today is 30°F. The temperature in Vikki’s town is 82°F. In both towns, the relative humidity is 90%. Is the amount of water vapor in the air the same in Mark’s and Vikki’s towns? Explain your answer. Also Talk about which one has more water vapor
Answer:
I assume there could be a change in water vapour in the weather as the coldness and the clouds in the city of Mark will transform into ice and fall like snow. And it is really warm in the town of Vikki, and the vapour of water may fall as rain.
Explanation:
I assume there could be a change in water vapour in the weather as the coldness and the clouds in the city of Mark will transform into ice and fall like snow. And it is really warm in the town of Vikki, and the vapour of water may fall as rain.
See above
Please mark brainliest
Hope this helps.
Which of the following is an example of chemical energy?
Heat given off by a light bulb,
A windmill spinning
Electrons moving in an electrical circuit
Energy in an apple that a worm eats,
Describe the processes of transcription and translation.
Answer:
The process by which DNA is copied to RNA is called transcription, and RNA is used to produce proteins is called translation.
Explanation:
What happens in photo system II?
A: excited electrons are transferred to an electron transport chain
B: excited electrons are used to split water molecules
C: electrons are reenergized to be used in NADPH production
Answer: a option electrons are passed on the z- series scheme
Explanation:
Answer:
A. excited electrons are transferred to an electron transport chain
Explanation:
Answer from gradpoint
What types of substances are considered drugs?
Answer:
stimulants (e.g. cocaine)
depressants (e.g. alcohol)
opium-related painkillers (e.g. heroin)
hallucinogens (e.g. LSD)
What is a example of accretion?
Answer:
An example of accretion is the garage someone may bulid on his home.