Answer:
Explanation:i dont knowim so sorry
Answer:
New species arise through a process called speciation. In speciation, an ancestral species splits into two or more descendant species that are genetically different from one another and can no longer interbreed.
Explanation:
true or false the nucleus takes up about 30% of the cell’s volume
It is false that the nucleus takes up about 30% of the cell’s volume.
What is nucleus?The part of a cell that houses the chromosomes in biology is nucleus. The membrane-enclosed nucleus is where RNA is synthesized from the chromosomal DNA. Enlarge. component cells.
The nucleus' principal jobs include storing the cell's DNA, preserving its integrity, and assisting with transcription and replication.
One of the most noticeable features of a eukaryotic cell is its spherical nucleus, which normally makes up 10% of the cell's volume.
The genetic information and other instructions necessary for cellular functions are found in the double-membraned organelle known as the nucleus. It is one of the biggest organelles and is only present in eukaryotic cells.
Thus, the given statement is false.
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Other than enzymes, what else can be used to separate the DNA strands?
Answer:
The enzyme responsible for separating the two strands of DNA in a helix so that they can be copied during DNA replication.Explanation:
Why where the Galapagos Turtles different from the mainland turtles if they shared a common ancestor?
Evaluate the examples and select those that do not show artificial selection.
A. White rabbits have a low survival rate in nature, because it is easy for predators to spot them.
B. Penguins with higher body fat tend to survive nesting in the Antarctic winter, while leaner penguins often die.
C. A gene for disease resistance in fir trees is transferred to pine trees using modern DNA technology, allowing farmers to maximize pine tree growth.
D. Because big game hunters sought elephants for ivory, often poaching those with the biggest tusks, more African elephants today naturally lack tusks compared to the elephant populations 100 years ago.
E. In subsaharan Africa, genetically modified grass varieties that carry genes for disease and drought resistance are now available to farmers, providing more sustainable food sources for their livestock.
Answer !!!! I will give you 20 points
Answer:
its a cladogram :D
Explanation:
Answer:
it D
Explanation:
These structures allow sperm cells to move through the style:
A long, thin tube called the pollen tube develops from the pollen grain once it touches the flower's stigma this pollen tube allows sperm cells of plants to move through the style. So, the answer is Pollen tube.
When a female gametophyte undergoes double fertilization, male gametes or the sperm cells are transported to the female gametophyte via pollen tube, which results in the production of the seed.
Two sperm cells are found in the pollen tube, which grows along the flower's style until it reaches the ovule. After that, the sperm cells go through the pollen tube to fertilize the ovule's egg cell.
Therefore, pollen tube is the structure that allow sperm cells to move through the style.
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The given question is incomplete, the complete question is:
"The structure allow sperm cells of plant to move through the style:"
What kind of tide is this?
Answer:
spring tides as taught to us till now
the correct sequence of events in meiosis
Why does the note A-natural sound different on a tuning fork, a violin, and a flute?
plz hurry
.
Answer:
The note A-natural sounds different on a tuning fork, a violin, and a flute because of the relative amplitudes of harmonics
Explanation:
got it right :3
In an electromyography (EMG) read out, all motor units can look slightly different because:_____.
a. every muscle has a varying number of motor units so they can generate different frequencies.
b. every muscle has a varying number of motor units so they can generate different frequencies.
c. each motor unit can generate a different amount of recruitment.each motor unit can generate a different amount of recruitment.
d. every muscle has one motor unit so they have slightly different frequencies.every muscle has one motor unit so they have slightly different frequencies.
e. each motor unit can innervate a different number of muscle fibers.each motor unit can innervate a different number of muscle fibers.
Answer:
a. every muscle has a varying number of motor units so they can generate different frequencies.
e. each motor unit can innervate a different number of muscle fibers.
Explanation:
Electromyography (EMG) is a diagnostic procedure used to measure the response of muscles and nerves to electrical activity. A motor unit is composed of one motor neuron and muscle fibers it innervates. The number of muscle fibers in each motor unit can vary among different muscles and even among motor units within the same muscle. Each motor unit is known to innervate a variable number of muscle fibers, but each single muscle fiber is innervated by only one motor.
An electromyography (EMG) read out has all motor units looking different
because
Every muscle has a varying number of motor units so they cangenerate different frequencies
Each motor unit can innervate a different number of muscle fibers.Electromyography (EMG) is used in diagnostics for measuring the
relationship between muscles and nerves through responses to electrical
activity.
The body has muscles with no constant number of motor units as it varies.
Each motor unit also supply nerves to different number of muscle fibers
which explains the difference in motor units during electromyography.
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What are sedimentary rocks ?? USE IN YOUR OWN WORDS.
40 POINTS DONT SKIP !
Answer:
Rock that has formed through the deposition and solidification of sediment
Explanation:
Consider the following story:
“During the summers when Xavier was a young boy (around 8 years old), his grandfather would take him to northern Ontario to go fishing on weekends. Shortly after his grandfather died his family left Ontario. He was never able to clearly remember the fishing trips. When he was 30 years old he moved back to Ontario with his wife. One weekend they decided to take a trip to northern Ontario to spend the weekend at a resort on one of Ontario’s many lakes. When they got out of the car, they were overwhelmed by the aromatic smell of the trees in the heavily wooded area by the lake. Suddenly, memories of the wonderful weekend fishing trips with his grandfather came flooding back to the him.”
Discuss the following questions:
Is this an example of a repressed memory? If not, why not?
If it’s not a repressed memory, then what is it? What accounts for the sudden re-emergence of this buried memory?
Could this account for other, more traumatic, kinds of “repression” as well?
Answer:
No.
Explanation:
This is not an example of a repressed memory because these are the good memories whereas the repressed memory are bad memories of childhood. It may be infantile amnesia due to the inability of adults to bring episodic memories memories of situations or events that occurs in their childhood. The sudden re-emergence of this buried memory is the experience of the same situation or place or event that occurs in the childhood. If a person visit to a same place which he gone in their childhood so the person remember the buried memory.
Which statement best describes the relationship between an allele and a gene?
A.) An allele is a version of a gene that can be expressed as a phenotype.
B.) An allele is the primary protein made by a gene found in a developing embryo.
C.) An allele is the part of a gene that attaches to messenger RNA molecules.
D.) An allele is a segment of a DNA molecule that controls replication of a gene.
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This type of soil is found in warm, humid climates.
pedocal
laterite
pedalfer
humus
Answer:
laterite
Explanation:
Laterite soil is found in warm, humid climates. So, the correct option is B.
What do you mean by Climate?Climate may be defined as the description of the long-term pattern of weather in a particular area.
Laterite soil is found in the soil layer which is rich in iron oxide and derived from a wide variety of rocks weathering under strongly oxidizing and leaching conditions.
Therefore, Laterite soil is found in warm, humid climates.
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Which of the following is true about the color of a substance?
1. it is the only information needed to identify a substance
2. it helps to identify a substance but by itself is not a significant indicator of what the substance is
3.it is a chemical property of a substance
4.it never changes
Answer:
1
Explanation:
It identifies the substance.eg a milk is a creamy liquid substance so the creamy color make us identify the milk
it would be nice if you could ples help me answer : Because endothermic animals must maintain a constant body temperature, they must
Question 8 options:
eat more often to have energy to keep a constant temperature.
become sluggish when it becomes to cold to conserve energy.
move to sunlight to warm, and shade to cool.
constantly move around to keep their bodies warm.
Are garden pansies “perfect flowers” as in do they have these traits:
•It makes and distributes male gametes.
•It makes female gametes.
•It receives male gametes.
Yes, they are perfect flowers.
An atom has an atomic number 17 and atomic mass number 35. How many neutrons are present in its nucleus?
A 17
B. 18
C. 35
Answer:
B. 18
Explanation:
An atom, which is the smallest indivisible particle of matter, further contains certain particles called SUB-ATOMIC PARTICLES namely: proton, neutron and electron. In a neutral/uncharged atom, the number of proton is equal to the number of electrons. The number of protons in an atom represent its ATOMIC NUMBER.
However, the sum of the proton number and neutron number gives the MASS NUMBER i.e. mass no. = proton no. + electron no.
Hence, according to this question which states that an atom has an atomic number of 17 and a mass number of 35. The neutron no. can be calculated as follows:
Neutron no. = mass no. - proton no.
Neutron no. = 35 - 17
Neutron no. = 18
Answer:
B. 18
Explanation:
35 - 17 = 18
main answer
2
Which of the following is an example of an abiotic factor?
A) Oak tree
Mushroom
C) Dead, broken branch
D Sand particle
___________________ is the plants ability to with stand winter stress.
Answer: adaptation
Explanation:
Answer:
Hardiness is the plants ability to with stand winter stress.
1
Which of the following animals has a body temperature
that doesn't change depending on the weather outside?
A. Snake
B.lizard
C. Dog
D. Shark
Answer:A
Explanation:i chose A because snakes are cold blooded
Animals have a body temperature that doesn't change depending on the weather outside A. Snake
What are endothermic?An endotherm, because the call shows, is used to refer to heat-blooded animals. they're the animals who keep a regular frame temperature no matter the ambient temperature. mainly, endothermic animals represent birds and mammals of the animal nation.
What animals are exothermic?Ectotherm, and referred to as cold-blooded animal—that is, any animal whose regulation of frame temperature relies upon outside sources, including sunlight or a heated rock floor. The ectotherms consist of fishes, amphibians, reptiles, and invertebrates.
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You have just eaten a ham and cheese sandwich for lunch. Explain the all of the digestive processes (mechanical and chemical) that occur as you eat then digest the sandwich. Start in your mouth and finish at the end of the small intestine. Be sure to include all of the digestive organs and enzymes involved and specify how the carbohydrates, lipids, and proteins are broken down and absorbed.
Answer:
The digestion starts with the buccal cavity or mouth by chewing the food. Teeth break the ham and cheese sandwich into small and digest the starch present in the food with help of the amylase enzyme present in saliva. The small chewed particles of food mixed with saliva called bolus move to the stomach.
In the stomach, there is HCl acid present that killed any harmful microorganism present in the bolus and digests the protein present in the ham and sandwich by pepsin enzyme secreted by the parietal cells of the stomach.
Lipase digest fat present in the cheese of sandwich by gastric juice. Small intestine digest fat by lipase protein by protease and carbs by amylase.
Absorption takes place in the small intestine that contain numerous villi’s projections in the cell lining for absorption in the small intestine.
The enzyme that performs transcription binds to a site called?
Answer:
The promoter is the binding site for RNA polymerase, the enzyme that performs transcription.
Explanation:
The operator is a negative regulatory site bound by the lac repressor protein. The operator overlaps with the promoter, and when the lac repressor is bound, RNA polymerase cannot bind to the promoter and start transcription.
Why may there be variations in plants grown from seeds?
Answer:
Because the seeds are formed as a result of sexual reproduction, which brings about genetic variation
Explanation:
Ideally, the chances of genetic variation in organisms increases as a result of sexual reproduction. Specifically, the meiotic process in sexual reproduction ensures this. Seeds are plant structures used for propagation, as they grow and develop into new organisms.
A plant propagated by SEEDS will possess variation because the seeds were formed from sexual reproduction i.e. fertilization of male gamete (pollen) and female ova. Note that each of these gametes that combined to form a seed, were produced by meiotic division.
The ____ includes all of the water in all phases (solid, liquid, or gas) on or near the earth's surface.
atmosphere
geosphere
biosphere
troposphere
hydrosphere
Answer:
Si the hydrosphere
Explanation:
the hydroshhere is simply the total of all water
The movement of these eroded particles to a new location is called deposition, which often results in distinct ___________ of sediments building up in a particular area.
Answer:
layers? maybe
Explanation:
the word could be anything honestly. like formations, build-up, pockets.
Earth's atmosphere and oceans transfer heat through the evaporation and movement of water, producing-
A. Magnetic reversals and living organisms
B. Solar eclipses and lunar storms
C. Earthquake and volcanoes
D. Winds and ocean currents
Pls help this is due in an hour!!!!
Answer:
Throughout their life cycles, frogs have an important place in the food chain as both predators and prey. As tadpoles, they eat algae, helping regulate blooms and reducing the chances of algal contamination. Frogs are an important source of food for a variety of animals, including birds, fish, monkeys and snakes.
Explanation:
Plz help/will give brainlest!
What are some inherent traits of a lion