i didnt understand it too sorry
Why is birth rate multiplied by 1000 not 100
A car breaks down 2.1 m from the shoulder of the road. 1.99x103 N of force is used to push the car off the road. How much work has been done on the car?
Answer:
Joules
Explanation:
W = F * d
F = 1.99*10^3 N
d = 2.1 m
W = 4179 Joules
what happens if the immune system fails to produce proteins called antibodies
Answer:
the defenses are down
Explanation:
antibodies are actually quite necessary, they come from helper b cells to help fight infections, and even though helper t cells can fight, your body still needs antibodies hope i helped!
describe how the body maintain the level of glucose in the blood while a person goes without food
Answer:
the body has glucagon and insulin, glucagon tells the body to release more glucose whenever glucose levels are low and insulin feels the glucose to the body, reducing glucose levels
Explanation: pretty much it
How does the ear pick up sound waves from the external environment? (any bots or links added will be reported!)
Answer:
The auricle a portion of the outer ear collects sound waves, channeling into the ear canal where the sound is amplified.
Explanation:
The auricle a portion of the outer ear collects sound waves, channeling into the ear canal where the sound is amplified.The auricle a portion of the outer ear collects sound waves, channeling into the ear canal where the sound is amplified.The auricle a portion of the outer ear collects sound waves, channeling into the ear canal where the sound is amplified.The auricle a portion of the outer ear collects sound waves, channeling into the ear canal where the sound is amplified.The auricle a portion of the outer ear collects sound waves, channeling into the ear canal where the sound is amplified.Answer:
Explanation:
Stored energy or energy of position is known as
Energy *
1.)Potential
2.)Kinetic
Answer:
Explanation:
1) potential because it is not "in motion"
Rats can be a real danger when they find
their way into your food storage spaces? yes or no
Answer:
yes, it could be something that's old or something rats cant eat/drink
Explanation:
Most typically, the order in which the steps of scientific investigation are applied is:
a. Controlled experiment, hypothesis, analysis of results, observations, questions,
conclusions
b. Observations, controlled experiment, hypothesis, analysis of results, conclusions,
questions
c. Questions, observations, hypothesis, controlled experiment, analysis of results,
conclusions
d. Questions, observations, analysis of results, controlled experiment, conclusions,
hypothesis
Answer:
C
Explanation:
The most common living bacteria today are
Answer:
eubacteria.
Explanation:
Five facts about protein synthesis
Answer:
1.Unzipping. - DNA double helix unwinds to expose a sequence of nitrogenous bases. ...
2.Transcription. A copy of one of the DNA strand is made. ...
3.Translation (Initiation) mRNA couples w/ ribosome & tRNA brings free amino acids to ribosomes.
4.Elongation. - Anticodon of tRNA recognizes codon on mRNA. ...
5.Termination.
Ribbon and molecular surface renderings of just the enzyme in 4SKN (with and without the DNA substrate) indicate that ________ is bound in a deep active site, while a ________ loop stretches across the top of the active site and interacts with the DNA substrate.
Answer:uracil, hydrophilic
Explanation:
Cómo es estudiado hoy el organismo humano?
someone please help asap!!
Answer:
b
the graph has a positive gradient
How does the age of a tree relate to its size?
Answer:
Árbol de envejecimiento fórmula La fórmula de envejecimiento del árbol puede estimar la edad de un árbol multiplicando el diámetro del árbol por su factor de crecimiento. Es más exacto con bosque y árboles rurales en lugar de árboles urbanos, que a menudo se cultivan en condiciones menos ideales que pueden atrofiar su crecimient
Answer:
If you know when the tree was planted, you can easily and accurately determine its age. The second most accurate way to estimate tree age is to count the annual rings of wood growth. Annual rings can be counted using two different methods. You can extract an increment core from the tree using an increment borer.
Explanation:
how planaarians able to survive without resoirtiry and circulatory system
Answer:
they possess different adaptive features
Type of relationship where one organism survives while by feeding on another.
A) Commensalism
B) Parasitism
C) Mutualism
D) Predator-Prey Relationship
Answer:
B) Parasitism
Explanation:
If one strand of DNA has the sequence 5'ATCG 3', what would be the sequence of the matching DNA strand
Answer:
Each strand is made up of a sequence of four nucleotides, A, C, G, and T. The order of the nucleotide sequence encodes genetic information. Since the nucleotides pair in a predictable way — A with T, and C with G — each strand of the DNA is always complementary to the other.
Answer:
3' TAGC 5'
Explanation:
A-T, C-G
Rickettsia typhi is a species of infectious bacterium that is an obligatory intracellular parasite. This means that, similar to viruses, R. typhi cannot reproduce and survive outside of a eukaryotic cell. Why do we consider viruses nonliving, but rickettsia alive
Answer:
Due to its characteristics.
Explanation:
We consider viruses are nonliving, but rickettsia are living because rickettsia have the characteristics of bacteria which is a living and has unique structure. It also survives outside the living cell but not for long time. The rickettsia remain in their shape and does not form crystalline structure like viruses outside the cell. If there is suitable environment for rickettsia, it can survive in that environment.
An E. coli cell contains about 15,000 ribosomes, which carry out protein synthesis. Assuming ribosomes are spherical and have a diameter of 20.0 nm, calculate the fraction of the E. coli cell volume that is occupied by ribosomes.
Answer:
14.57%
Explanation:
From the previous lesson, we understood that the Volume of E.coli = 4.13 × 10⁻¹⁹ m³
The diameter of the ribosome = 20 nm
Radius will be D/2 = 20 nm/2 = 10 nm
The volume of the sphere since the shape of the ribosome is spherical = 4πr³
∴
The volume for each ribosome = 4πr³
For 15000 ribosome, we have:
[tex]= 15000 \times (\dfrac{4}{3}\pi) ((10^{-8})^3)[/tex]
[tex]= 15000 \times (\dfrac{4}{3}\pi) (10^{-24})[/tex]
= 6.283 × 10⁻²⁰
Thus, the fraction of E.coli volume occupied by the ribosome can be determined by using the formula:
[tex]= \dfrac{Vol. \ of \ ribosome}{Vol. \ of \ E.coli}\times 100[/tex]
[tex]= \dfrac{6.283 \times 10^{-20}}{4.31 \times 10^{-19}}\times 100[/tex]
= 14.57%
Atoms react with one another based on what
1. Total electrons
2. Valence electrons
3. Protons
4. Neutrons
Answer:
2
Explanation:
valence electrons=reaction
PLEASE ANSWER ASAP I WILL GIVE YOU BRAINLIEST AND GIVE FREEEE POINTSSS AFTER
Describe each of the following types of reactions and give one example of each: combustion, synthesis, decomposition, single replacement, double replacement.
Answer:
The five basic types of chemical reactions are combination, decomposition, single-replacement, double-replacement, and combustion. Analyzing the reactants and products of a given reaction will allow you to place it into one of these categories. Some reactions will fit into more than one category.
What is the role Of DNA ligase in the elongation Of the lagging strand during DNA replication?
a. It stabilizes the unwound parental DNA.
b. It unwinds the parental double helix.
c, It joins Okazaki fragments together.
d. It synthesizes RNA nucleotides to make a primer
Answer:
C
Explanation:
Ligase is like GLUE so yea
What is natural selection?
Answer:
Basically in simple terms, a process in which capable animals can adapt and live longer to their environment than to others. Like a light colored mice on dark rock wouldn't survive unlike dark colored mice
Explanation:
In nature, living organisms have to navigate conditions (such as severe heat, extreme cold, drought, predation, food scarcity, etc) surrounding their existence in order to survive.
The theory of evolution states that as they conquer these conditions, their behavior and physical abilities, and traits evolve and become efficient at doing so.
These traits are then passed on to their offspring via the process of reproduction.
The process by which their physical qualities change to survive their environment is called adaptation.
Those who are unable to evolve are terminated by the harsh conditions of nature. Those who are unable to pass their abilities to survive to their offspring also get wiped off. Those who adapt and reproduce are deemed to be selected naturally to survive hence the term - Natural Selection.
Hence natural selection is a component of evolution.
Evolutionists have stated that the Giraffe is an example of an animal that evolved. It developed a long neck to enable it to reach for food far off the ground and on trees when there was a condition that wiped off shrubs available for them to graze on easily off the ground.
As giraffes with longer necks grazed and fed well, they passed on the gene to their offspring whilst those without adequately long necks got terminated by nature.
Another example is given in the attached picture. The animal in the picture is a desert dragon lizard adapting the color of its skin to blend to its environment in order to escape being spotted by desert hawks that prey on them.
Learn more about natural selection here:
https://brainly.com/question/23279230
To reproduce , female elephants produce eggs and male elephants produce sperm. Off spring are produced by the fusion of an egg with a Sperm cell . Which statement is true about the offspring?
Answer:
Answer: C. The offspring are genetically distinct from the parents because they are produced by sexual reproduction. Explanation: Sexual reproduction occurs through the fusion between an egg and a sperm cell
The borders of plates never change. True False
Answer:
Explanation:
False
Answer:
false
Explanation:
what is a nucleic acid that contains the genetic information for heredity in most organisms.
Answer:
deoxyribonucleic acid Or ( DNA)
Explanation:
DNA contains the genetic information for heredity in most organisms.
Have a wonderful Day!
Answer:
there's all the answers
Explanation:
Which statement provides the best description of the relationship between
primary consumers and producers?
A. Primary consumers provide producers with the chemical energy
they need
B. Primary consumers eat secondary consumers, which rely on
producers for food.
C. Producers and primary consumers compete with each other for
food sources.
D. Producers provide primary consumers with the chemical energy
they need
SUBMIT
D. Producers provide primary consumers with the chemical energy
they need
The zinc chloride produced by the reaction is in what state
Answer: Solution in Water
Explanation:
I believe this refers to the reaction between Zinc and Hydrochloric acid.
When this happens, the solution will be Zinc Chloride but as it happened in a solution (the acid), the resulting Zinc Chloride salt would be in aqueous form which means that it would be a solution in water which is the other product of this reaction.
Had the zinc reacted with gaseous HCI, it would have resulted in a Zinc Chloride with no liquid in it.
What process takes place at the boundary between the capillaries and the alveoli?
AIR
Bronchiole
Alveoll
Small blood
vessels (capillaries)
A. An exchange of blood and lymph between the circulatory and
lymphatic systems
B. An exchange of oxygen and carbon dioxide between the
circulatory and respiratory systems
C. Reabsorption of water into the circulatory system from the
excretory system
D. An exchange of air between the circulatory and respiratory
systems
Answer:
B because aveoli are part of the lung Branch and capillaries take in the oxygen with blood?
Explanation: my guess since carbon dioxide also needs to be excreted out of lungs.
Which two systems work together to make your body move?
a.digestive system and integumentary system
b.lymphatic system and digestive system
c.nervous system and excretory system
d.skeletal system and muscular system
Answer:
The answer is D. skeletal system and muscular system.In the musculoskeletal system, the muscular and skeletal systems work together to support and move the body. The bones of the skeletal system serve to protect the body's organs, support the weight of the body, and give the body shape.