Answer:
2.23 atoms
Explanation:
In this question, we first need to change the mass of Nitrogen to moles by using the formula;
mole = mass ÷ molar mass
Molar mass of Nitrogen = 14g/mol
Mass = 5.2x10^-23 grams
mole = 5.2x10^-23 ÷ 14
mole = 0.371 × 10^-23
mole = 3.71 × 10^-24 mol
Number of atoms in Nitrogen atom = 3.71 × 10^-24 mol × 6.02 × 10^23 atoms (avagadro constant)
= 22.3342 × 10^(-24+23)
= 22.33 × 10-¹
= 2.233 × 10°
= 2.23 atoms
Which pair of structures would provide a positive identification of a plant cell under a microscope?
endoplasmic reticulum, chloroplasts
large central vacuole, flagellum
chloroplast, large central vacuole
cytoskeleton, cell wall
Answer:
C. chloroplast, large central vacuole
Explanation:
3.11 Quiz on K12 .^.
Answer:
chloroplast, large central vacuole
Explanation:
2.08 Quiz: Plant and Animal Cells
which of the following is a statement of the first law of thermodynamics?
Answer:
Which of the following is a statement of the first law of thermodynamics? Energy can be transferred/transformed, but it cannot be created or destroyed. ... Whenever energy is transformed, there is always an increase in the: entropy of the universe.
Explanation:
Answer:
✔ Heat is transformed, but not created or destroyed.
Explanation:
What’s the answer ? I will very appreciate if someone helps me
Write a logical hypothesis
Answer/Explanation:
Two unaffected parents can have affected children, that means cystic fibrosis must be a recessive trait.
The two parents must each have one copy of the cystic fibrosis allele, but are themselves unaffected. By chance, the son (shaded) inherited both of these copies and is affected. The daughter either inherited one or zero copies of the cystic fibrosis allele, as she is unaffected.
a______is a substance or a cgemical compound required by the animal for these productive purposes
Answer:
A nutrient is a substance or a chemical compound required by the animal for these productive purposes .
Explanation:
Nutrients are essential compounds and macromolecules needed for a variety of metabolic processes. Animals show heterotrophic nutrition by consuming organic matter like lipids, fats, and proteins.
Food provides essential vitamins, amino acids and minerals that are used as cofactors and coenzymes in chemical reactions.
For example, animals use carbohydrates as fuel for all metabolic processes.
C6H12O6+ 6 O2 → 6 CO2 + 6 H2O + ≅38 ATP
Ansel Adams' constant energy and activity helped him achieve notoriety and prestige in the early 1930's.
Which word is the best synonym for the underlined word in the sentence above.
a. honor
C. awards
b.
wealth
d fame
Answer:
It's "D"
Explanation:
Fame
Answer:
it d
Explanation:
What would happen if our skeleton are made up of a single bone.
Group 3
Q. Which type of movement would have been possible if:
a. our elbow had a fixed joint
b. we were to have a ball and socket joint between our neck and head.
Q.2. Define the following:
a. Joints b. Ligaments C. Cartilages
Joints:-Joints are the areas where 1 or more bones meet.Most joints are mobile,allowing the bones to move.Joints consist of the following:Cartilage . This is a type of tissuethat covers the surface of a bone at a joint.Next Ligaments:-Ligaments are short bands of tough,flexible tissue,made up of lots of individual fires,which connect the bones of the body together.Ligaments can be found connecting most of the bones in the body.The function of a ligament is to provide a passive unit to amount of movement between your bones.
Which statement best describes the role of DNA in the body
Answer:
Long term storage of information
Explanation:
Unlike other lipids, steroids can diffuse through a cell membrane.
False
True
Purple flowers are dominant to white flowers. A heterozygous purple flower is crossed with a white flower. What are the probabilities of the phenotypes and genotypes of their offspring?
Answer:
50% probability of Pp (purple) or pp (white) genotype.
Explanation:
P = purple gene
p = white gene
Punnet squares show the possible genotypes and probabilities of each genotype in the offspring of a cross:
Purple flower genotype (heterozygous) = Pp
White flower genotype = pp
Punnet Square:
[tex]\left[\begin{array}{ccc}&P&p\\p&Pp&pp\\p&Pp&pp\end{array}\right][/tex]
Potential genotypes for offspring are Pp and pp;
According to the Punnett square, 2 of 4 offspring will have the Pp genotype and the other 2 will have pp genotypes;
This means 2 should be purple and 2 white;
Or, there is a 50% chance of having either genotype, of being purple or white.
Let us assume the following:
Flower color is represented by the allele A.Hence, the dominant purple color would be A, while the alternate white color would be represented by a.From the above assumptions, a heterozygous purple flower would have the genotype Aa, while a white flower would have the genotype aa.
Now, crossing the two flowers:
Aa x aa
Aa Aa aa aa
From the results of the cross, the offspring's genotypes, phenotypes, and their respective probabilities would be as follows:
Aa - purple color - 1/2aa - white flower color - 1/2In order words, the cross will yield offspring with purple color flower (genotype, Aa) and white flower color (genotype, aa) each with 1/2 probability.
More about monohybrid crossing can be found here: https://brainly.com/question/15521718
Help me pls I don’t understand
Answer:
im 99% sure its b :)
On which continent were fossils of both Glossopteris and Lystrosaurus discovered?
MARK BRAINLIEST PROMISED!
Answer:
Antartica
Explanation:
I played the quiz and got it right!
Answer:
Antarctica and Africa
(or C if taking Edge)
Explanation:
Lystrosaurus fossils are only found in Antarctica, India, and South Africa. ... The Glossopteris fossil is found in Australia, Antarctica, India, South Africa, and South America—all the southern continents.
When norepinephrine is release at the synapse
Group of answer choices
blood pressure will be dropped.
neurons will be inhibited.
the heart rate will decrease.
the heart rate will increase.
Answer:
the heart rate will increase just googled it
what is mass ?write any 3 untits of mass
Explanation:
mass is a weight ofan object .
PLEASE HELP IT IS DUE NOW
please paki sagutan
Answer:
Ang mga dapat na taglay ng mga kabataang asyano:
- May pagpapahalaga sa sariling pinag-mulan.
- May taglay na kababaang loob.
- Marespeto sa pamilya at kapwa.
- Pagkakaroon ng bukas na isipan.
Ang mga di-dapat na taglay ng mga kabataang asyano:
- Manatili sa sariling pag-iisip.
- Ikamuhi ang sariling bansa.
- Pag patuloy na pagsuporta sa desisyon ng ibang bayan.
- Pagpilit sa gusto at nais na walang sapat na dahilan.
Ostriches have wings but do not fly humans have an appendix with no apparent function whales contain bones for rear legs each of these are examples of
Answer:
vestigial structures
Ostriches have wings but do not fly, and humans have an appendix with no apparent function, whales have bones for their back legs, which are examples of vestigial structures because they were once functional but are no longer.
What is the importance of the vestigial organs in animals?Vestigial organs have lost much or all of their ancestral function in the evolution process, for example, ostriches have wings that have lost the ability to fly and are now used for balance and courtship displays. The human appendix is another vestigial organ that once had digestive function but no longer does.
Hence, ostriches have wings but do not fly, and humans have an appendix with no apparent function, whales have bones for their back legs, which are examples of vestigial structures because they were once functional but are no longer.
Learn more about the vestigial organs here.
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Explain the electron pathway of the light reactions, and list the order in which each complex participates in the pathway.
What is the importance of the envelope to a virus? PLSSS HELPP!!!
Answer:
The viral envelope serves several functions, including protecting the RNA or DNA molecule(s), evading recognition by the immune system, and facilitating virus entry. Despite these commonalities, viral envelopes come in a wide variety of shapes and configurations.
Explanation:
what is respiration
Answer:
respiration is a process in living organisms involving the production of energy, typically with the intake of oxygen and the release of carbon dioxide from the oxidation of complex organic substances.
Farmers often spray chemicals on their crops to keep insects away. Some insects die from these chemicals, but some insects
continue to live. What will MOST LIKELY happen to the insects that live?
A)
They will be unable to lay eggs.
B)
They will start eating other crops.
They will produce more insects that can survive.
D)
They will be able to protect themselves from all types of chemicals.
The Earth does not need a continual supply of materials.
True
False
Answer:
I think it is false because the Earth has a very large population of people and animals and each and every one of them needs nutrients to survive so I think the statement is false
Which type of reproduction is when two cells come together to produce a new individual? fission sexual asexual budding
Answer:
sexual reproduction
How do sea urchins alter the ecosystem if their population gets too big?
The overpopulation of the sea urchin population might magnify the impact of the negative growth conditions of kelp beds by eating what's left or what grows in the next few years.
The viceroy butterfly is not poisonous but has coloration that is almost identical to the poisonous monarch butterfly. Which type of adaptation does this describe?
Mimicry
Warning coloration
Camouflage
Chemical defense
Answer:
mimicry
Explanation:
if im wrong then plz virtually slap me
Answer:
A - Mimicry
Explanation:
Not all cells have a cell membrane. True False
True
Explanation:All cells have cell membranes. There are variations between cell membranes, but the same basic structure exists in all cells.
hope this help! ^^
How are scientists using the lotus leaf as inspiration to solve problems?
How does nitrogen help plants to grow?
According to Jean piaget most preschool children are in the ______ stage of mortal development ?
Which of the following is true about mutations?
All mutations are harmful.
Every genetic mutation is expressed as a phenotype in the organism.
Mutations can be environmental or genetic.
Only some mutations involve a change in the DNA sequence.
Answer:
Mutations can be environmental or genetic
Only some mutations involve a change in the DNA sequence. Therefore option D is correct.
Mutations are changes in the DNA sequence of an organism's genome. Not all mutations are harmful; some can be beneficial or neutral.
Beneficial mutations can lead to advantageous traits, contributing to the organism's survival and evolution. Neutral mutations have no noticeable effect on the organism's phenotype.
Additionally, not every genetic mutation is expressed as a phenotype in the organism. Some mutations may occur in non-coding regions of DNA or be masked by other genetic factors.
Mutations can be caused by various factors, including environmental factors (e.g., radiation, chemicals) and genetic factors (e.g., errors in DNA replication, recombination).
Therefore option D Only some mutations involve a change in the DNA sequence is correct.
Know more about DNA sequence:
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