Answer:
B
Explanation:
i took the test lollll
The unicellular spores of the fern Ceratopteris richardii are about 100 μm in diameter. Calculate the surface-area-to-volume ratio of a cube whose sides are 100 μm in length to approximate the surface-area-to-volume ratio of the fern spore cell. Show your work.
Answer:
Take 6(100x10^-6)^2 which is the surface area of it.
The volume is (100 x 10^-6)^3 this is the volume of it.
This is the surface to volume ratio, so 6(100x10^-6)^2 divided by (100 x 10^-6)^3.
Moreover the volume is 6 x 10^4
Explain Genes in a expert way i will give bfrainlest who has the best answer
Answer:
Genes are pieces of DNA (deoxyribonucleic acid) inside each cell that tell the cell what to do and when to grow and divide. Each gene is made up of a specific DNA sequence that contains the code (the instructions) to make a certain protein, each of which has a specific job or function in the body. Each human cell has about 25,000 genes.
Explanation
I already learned about genes, and this is what I learned
What can tourists visit in St. Augustine?
A. Jefferson Memorial
B. Liberty Bell Center in Independence National Historical Park
C. Oldest wooden schoolhouse in America
D. Tunnel behind Niagara Falls
Answer:
C. Oldest wooden school house in America
Answer:
Its C
Explanation: i did this test before and i got it right
PLEASE HELP!!! Methods of contraception are designed:
A) for females only
B) for males only
C) for use mostly by females
D) for use mostly by males
Answer:
mark me brainlest now FRIEND
-ps:the answer is c) for mostly females
Explanation:
Cancer is the abnormal growth of cells caused by uncontrolled cell division.
a. True
b. False
Answer:
Cancer is a disease caused when cells divide uncontrollably and spread into surrounding tissues.
So, I guess its true
Incubators are used In hospitals to care for premature babies
Answer:
The answer would be C!
Explanation:
I hope this helps
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What is the largest tourist spot in Florida?
Jacksonville
Orlando
Tallahassee
Tampa
Answer:
Orlando
Explanation:
Because Disney land is in Orlando causing several tourists to travel to Orlando.
Answer:
Orlando
Explanation:
I got it right on my quiz.. hope this helped
1 point
A mutation in a gene results in an animal that cannot make a protein that
allows muscles to contract. Which of these is most likely to happen? *
A. The gene will eventually be found in all animals of the species.
B.The animal will die before having any offspring.
C.The gene will change back to the normal form.
D.The animal will pass this gene on to many offspring.
The effect of a mutation in a gene results in an animal that cannot make a protein that allows muscles to contract is that the animal will die before having any offspring.
What is mutation?Mutation is any change in the nucleotide sequence of the DNA.
Since genes are responsible for the synthesis of proteins, this means that a change in the nucleotide sequence of the gene will affect the production of proteins.
According to this question, a mutation in a gene results in an animal that cannot make a protein that allows muscles to contract.
This means that the animal will die before it gets the chance to produce offsprings.
Learn more about mutation at: https://brainly.com/question/17106056
What is a quantum number
Answer :
Quantum numbers are used in chemistry and quantum physics to explain the values of conserved quantities in the dynamics of a quantum system.
Quantum Number of Angular Momentum (l)
The angular momentum quantum number (l) denotes the general shape or area in which an electron exists—its orbital shape. The value of l is determined by the value of n, the fundamental quantum number. Positive values of the angular momentum quantum number range from zero to (n 1).
I hope this helps <3
(ii) The deer releases a hormone when it sees the wolf. Explain how this hormone helps the deer to run away.
what are the main biological functions of water
How do you think life on Earth would be different without the evolution of angiosperms? Provide two examples, each with an explanation.
Answer:
Without angiosperms, average annual rainfall in the area declined by 300 millimeters. In the eastern Amazon basin, the length of the wet season decreased by nearly 3 months. The extent of the wettest rainforests, which receive more than 100 millimeters of rain per month, shrank by 80%.
Which of the following best explains the connection between increased competition and the evolution of a species by natural selection?(1 point)
(A) Individuals that must compete for limited resources are more likely to have diseases that cause mutations.
(B) Individuals that have traits that allow them to outcompete others survive better and produce more offspring.
(C) Individuals must become stronger to compete for resources, and this increased strength is passed on to the next generation.
(D) Individuals migrate to another area in order to avoid competition for limited resources in the current ecosystem.
Answer:
B.
Explanation:
For A, more limited resources doesn’t mean more to mutations, mutations are random. C is incorrect, D and doesn’t explain the connection.
Natural selection occurs in individuals that have traits that allow them to outcompete others survive better and produce more offspring.
What is natural selection?Natural selection is the process by which organisms are selected for survival in their environment by natural processes which depends on the ability of the organism to adapt to their environment.
These traits enable the organism to adapt to changes in their environment.
Therefore, natural selection occurs in individuals that have traits that allow them to outcompete others survive better and produce more offspring.
Learn more about natural selection at: https://brainly.com/question/14385908
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where does natural selection happen ?
Answer:Natural selection occurs in nature obviously. There are quite a few reasons natural selection happens. One of the reasons natural selection occurs is because sometimes more offspring are born but not all of them survive.
Explanation:
Is extreme temperature effect on an enzyme reversible?
Answer:
apidly reversible active-inactive transition
Explanation:
What is what is the biggest change in leg anatomy from the dawn horse to modern horse
Answer:
The modern horse, in addition to having much longer legs, has developed hooves in place of hand/foot bones.
Explanation:
Just read the text :)
Which of the solutions
indicates a higher
concentration of solutes than
contained inside the cell?
A. hypotonic
B. isotonic
C. hypertonic
Answer:
C.
Explanation:
A hypertonic solution will indicate that the concentration of solutes is higher than that inside the cell.
In 1993 , geochemist Michael Russell proposed a mechanism by which life could have started on Earth as long ago as 3.5 billion years He proposed that life came from harnessing the energy from gradients that form when extremely alkaline water mixes with more acidic seawater . This proposal BEST describes which origin of life theory ?
Answer:
Hydrothermal vents
Explanation:
At the time of life's origin, the early ocean was acidic and filled with positively charged protons, while the deep-sea vents spewed out bitter alkaline fluid, which is rich in negatively charged hydroxide ions.
Answer:
D) hydrothermal vent life origin
Explanation:
i got it right on usatestprep!
Which of these is true of the nervous system?
The nervous system is entirely made up of epithelial tissue
The nervous system collects information from the external environment only
The nervous system takes a long time to respond to an environmental stimulus.
The nervous system sends instructions to the body about how to respond to stimuli
Answer:
the nervous system sends instructions to the body about how to respond to stimuli
Explanation:
Your nervous system uses specialized cells called neurons to send signals, or messages, all over your body. These electrical signals travel between your brain, skin, organs, glands and muscles. The messages help you move your limbs and feel sensations, such as pain.
Which goose is using the most energy? Assume that the goose is the same size in each
case.
A. One who is sleeping in an area where the temperature is 45°F
B. One who is feeding in an area where the temperature is 45°F
C. One who is sleeping in an area where the temperature is 30°F
D. One who is flying in an area where the temperature is 45°F
Answer:
A because losse more energy
True or false? The skills and characteristics needed for a high-quatilty friendship are the same skills and characteristics needed in a committed long-term relationship of marriage
Answer:
True and false because it depends, some characteristics can be used while others not. However, I believe that the best choice would be TRUE.
Explanation:
When was DNA recognized?
O 1900
O 1944
O 1977
O 1952
state when this reaction occurs (fibrinogen)?
Answer:
Thrombin, in turn, catalyzes the conversion of fibrinogen (factor I)—a soluble plasma protein - into long, sticky threads of insoluble fibrin (factor Ia). Blood-clotting proteins generate thrombin, an enzyme that converts fibrinogen to fibrin, and a reaction that leads to the formation of a fibrin clot.
Because the decay is close to the pulp chamber, the tooth must be monitored for the next few weeks to determine the health and extent of decay of the affected tooth. The dental assistant will need to set up for an intermediate restoration that will consist of the IRM material.
The pulp chamber of the tooth is the inner area of the tooth that houses its pulp. If the tooth enamel is compromised, as in a cavity, bacteria can enter the chamber and affect the dental pulp.
What is IRM in Dentistry?IRM is a temporary filling cement. Restorative material based on Zinc Oxide and Eugenol. Indication: Long-term temporary filling (up to one year). Great compressive strength.
With this information, we can conclude that the pulp chamber of the tooth is the internal area of the tooth that houses its pulp. If the tooth enamel is compromised, as in a cavity, bacteria can enter the chamber and affect the dental pulp.
Learn more about pulp chamber in brainly.com/question/7477955
Options
Body
Before
End
Appearance
After
Up
to move
Part
Pigmented
Cell
Answer:
ptions Body Before End Appearance After Up to move. Part Pigmented Cell. Add answer+5 pts ... What moves the chromatids around during cell division?
Explanation:
b) In general, do you think you get enough calcium in your diet? What foods from the food pyramid do you eat regularly? (2 points)
ASAP please
Answer:
Yes
Explanation:
I drink plenty of milk in my diet, and I know that I have enough calcium, because of my strong bones
How do vasoconstriction and vasodilation contribute to the homeostasis of body temperature ?
explain the factors that affect photosynthesis rate
This type of lightbulb uses the MOST energy?
A: Incadescent
B: CFL
C: fluorescent
D: LED
Answer:
C. fluorescent
please make me brainliest...✨
one important each stage of the house fly
Answer:
egg, larva (or maggot), pupal, and adult
Explanation:
depending on the type of fly, it may take about 1-4weeks for the cycle to be completed.