Answer:
The cell organization hierarchy consists of (in order): cells ⇒ tissues ⇒ organs ⇒ organ systems ⇒ organisms.
Explanation:
How long was each incubation period for the evolution experiment
Can diffusion and osmosis take place at the same time?
Answer:
yes
Explanation:
what is a force and type of force
Explanation:
the pull or push with changes or tries to change the position of a body is called force.
there are different types of force among them the main types of force are given below pulling force pushing force gravitational force magnetic force frictional force and muscular force
hope it helps
Answer:
a force is a pull or push that can change the shape of something, the direction of something, the speed of something, and more.
The Main types of force are listed below;
frictiongravityWhat does the following equation represent? C6H12O6 + 6O2 → 6CO2 + 6H2O
Answer:
the choloroplast
Explanation:
Representation of system or object such as charts or maps are
Answer:
graphical models
Explanation:
Which of the following is not a characteristic of a eukaryotic cell
Answer:
following means where man I can't understand sry for that
Why is fertile soil a valuable resource?
Humus is present in it
It takes a very long time to make it
It is quickly being renewed
There is a large amount of it
Adaptations that help
an
organism survive appear quickly.
A. True
B. False
Answer:
B
Explanation:
Adaptions that help an organism survive appear slowly over time due to the fact that natural selection takes lifetimes to make a big effect.
describe the function of the following features in bringing about Movement in a snail muscles
Ce clasă ești sa văd daca te pot ajuta
Answer:
A snail moves using muscles that are generally referred to as ''false feet'. Moreover, it leaves a trail of a slime like substance that is secreted by the feet which reduces the friction between the false feet and the Earth. it contains mucus.
What is a limiting factor of a desert frog that requires rocks for shelter & insects for food?
a. drought
b. scarcity of rocks
c. abundance of insects
d. shelter
e. rain
Answer:
D and E
Explanation:
they both sound right
I didn’t mean to put D but what is the answer?!
Answer:
Actually, D is the correct answer
What is a cell in science
Answer:
Cell, in biology, the basic membrane-bound unit that contains the fundamental molecules of life and of which all living things are composed. A single cell is often a complete organism in itself, such as a bacterium or yeast
hope it's help
#carryONlearningAnswer:
A cell is defined as the smallest, basic unit of life that is responsible for all of life's processes.
Explanation:
One of the following causes Creutzfeldt - Jakob disease?
Answer:
is caused by an abnormal infectious protein in the brain called a prion. Proteins are molecules made up of amino acids that help the cells in our body function.
Explanation:
Over 30 children younger than three years of age developed gastroenteritis after visiting a local water park. These cases represented 44% of the park visitors in this age group on the day in question. No older individuals were affected. The causative agent was determined to be a member of the bacterial genus Shigella. The disease resulted from oral transmission to the children. Based only on the information given, can you classify this outbreak as an epidemic? Why or why not? If you were an epidemiologist, how would you go about determining which pools in the water park were contaminated?
Answer:
No this is not an outbreak
Explanation:
No it cannot be classified as outbreak because an outbreak is when the number of affected individuals in an epidemic is much higher as compared to the estimated values. However, an epidemic is the one that affects the people around different countries of the globe.
This can be considered as endemic that is restricted to a certain set of people in a community
I would have studied pattern of movement of affected kids. The common pool to which all these kids visited can be the infectious one. Also one can test the pathogen in infected kinds, and look for similar pathogen in pool water through testing.
What are CD4 cells?
a. T-cells that have a CD4 receptor
b. B-cells that have a glycoprotein receptor
c. HIV antigens
d. red blood cells
Answer:
I'm pretty sure it is b because CD4 cells are the cells that are a glycoprotein
Explanation:
In Guinea pigs, black hair (B) is dominant over white (b), rough coat texture (R) is dominant over smooth (r), and short hair (S) is dominant over long hair (s). Assuming these genes are on separate chromosomes, draw the Punnett square for a cross between a heterozygous BLACK, ROUGH, SHORT haired with another heterozygous BLACK, ROUGH, SHORT haired guinea pig. What is the PHENOTYPIC RATIO of the offspring
Answer:
Phenotypic ratio: 27:9:9:9:3:3:3:1
Explanation:
Available data:
black hair (B) is dominant over white (b)rough coat texture (R) is dominant over smooth (r)short hair (S) is dominant over long hair (s)genes are on separate chromosomesCross: heterozygous BLACK, ROUGH, SHORT haired with another heterozygous BLACK, ROUGH, SHORT haired guinea pigParentals) BbRrSs x BbRrSs
Gametes) BRS, BRs, BrS, Brs, bRS, bRs, brS, brs
BRS, BRs, BrS, Brs, bRS, bRs, brS, brs
Punnett square)
BRS BRs BrS Brs bRS bRs brS brs
BRS BBRRSS BBRRSs BBRrSS BBRrSs BbRRSS BbRRSs BbRrSS BbRrSs
BRs BBRRSs BBRRss BBRrSs BBRrss BbRRSs BbRRss BbRrSs BbRrss
BrS BBRrSS BBRrSs BBrrSS BBrrSs BbRrSS BbRrSs BbrrSS BbrrSs
Brs BBRrSs BBRrss BBrrSs BBrrss BbRrSs BbRrss BbrrSs Bbrrss
bRS BbRRSS BbRRSs BbRrSS BbRrSs bbRRSS bbRRSs bbRrSS bbRrSs
bRs BbRRSs BbRRss BbRrSs BbRrss bbRRSs bbRRss bbRrSs bbRrss
brS BbRrSS BbRrSs BbrrSS BbrrSs bbRrSS bbRrSs bbrrSS bbrrSs
brs BbRrSs BbRrss BbrrSs Bbrrss bbRrSs bbRrss bbrrSs bbrrss
F1) Phenotype
27/64 B-R-S-
9/64 B-rrS-
9/64 B-R-ss
9/64 bbR-S-
3/64 B-rrss
3/64 bbrrS-
3/64 bbR-ss
1/64 bbrrss
Note: The symbol "-" represents either dominant or recessive alleles.
Phenotypic ratio: 27:9:9:9:3:3:3:1
Which wave has a wavelength that is most likely seen as red light? 690 nm O A 580 nm n O B. 490 nm O C. M M m 440 nm m O D. M
Answer:
690?
Explanation: Hopes this helps!
Answer:
690
Explanation:
ape x
One of the first astronomers to use a telescope was Galileo. Using his telescope he discovered that Jupiter had four moons and each night, the four moons, seen as points of light, appeared to change positions slightly. This observation gave further evidence for what? All BUT ONE could apply.
Answer:
B. The planets vary in size and composition.
Explanation:
Galileo was an Italian scientist and he was the first person to use a telescope in the field of astronomy. Although, the first telescope was invented by Sir Isaac Newton.
A telescope can be defined as an optical instrument or device which comprises of a curved mirror and lenses used for viewing distant objects i.e objects that are very far away such as stars and other planetary bodies.
One of the first astronomers to use a telescope was Galileo. Using his telescope he discovered that Jupiter had four moons and each night, the four moons, seen as points of light, appeared to change positions slightly. Therefore, this observation gave further evidence that the planets vary in size and composition. The slight change in the position of the moon indicate that planetary bodies have a variation in size and matter (constituent elements) that make them up.
Answer:
b
Explanation:
2. All living things are made of cells.
True
False
Answer:
true
Explanation:
WE ARE MADE OF CELLSSSSSSS AND EVERYTHING THAT IS LIVING DOES TOO
how are cnidarians different from sponges?
Answer:
★ Cnidarians have groups of similar cells that work together as tissues, while sponges have no tissues, only disconnected regions of specialized cells.
Explanation:
Hope you have a great day :)
here is the answer it is C
Do you think the human species is part of the Earth’s ecosystem?
Answer:
I think that humans would be part of the ecosystem because we produce carbon dioxide for plants, and without carbon dioxide, plants couldn't function. (This is just my opinion on the matter, but if this was a test question, I'd say yes.)
Explanation:
Answer:
Hmmm that's a tough question. In my opinion I believe that they are because they some of us choose to have a role in the ecosystem by helping the Earth become more "green". Maybe think about this, how did we end up here on Earth? (This might go against your science class but we ended up here because God created us all.) I don't know if this helped but I hope that it did. I apologize if it didn't.
Which best describes a recessive allele?
A. Always inherited from a parent when a dominant allele is inherited from the other parent.
B. Never inherited from a parent when a dominant allele is inherited from the other parent.
C. Only determines phenotype when a dominant allele for the same trait is present.
D. Does not determine phenotype when a dominant allele for the same trait is present.
Answer:
B!
Explanation:
A recessive allele can't be shown in the child unless there is no dominant allele.
Hope this helps, please mark me brainliest if it does! :)
Answer:option d
Explanation:
because ressesive alleles is not exhibited when a dominant allele is present. it may help to find genotype but not phenotype.
When energy from the Sun reaches Earth, the energy is not absorbed at the same rate by the air,
the land or the surface. What does the uneven heating of the Earth cause?
Answer:uneven heating of Earth's surface produces wind because the air temperature and air pressure are different. The differences in the air causes the air to a lower pressure. ... Uneven heating of the Earth's surface produces air masses of different temperatures. Cold air sinks, forcing warm air to rise, hope this helps.
Explanation:
Compare the effect of acetylcholine on cardiac muscle with its effect on skeletal muscle. Can you explain the mechanistic basis for the difference
Answer:
The action of the neurotransmitter acetylcholine, released by the vagus nerve in the heart, slows the heart rate and weakens the force of contraction. The skeletal muscle has the ability to perceive a stimulus and respond to it. As regards skeletal muscles, the stimulus is chemical in nature: acetylcholine released by the motor nerve ending. The response of the muscle fiber is the production and propagation along its membrane of an electrical current (action potential) that causes muscle contraction.
Explanation:
Acetylcholine is one of the most abundant neurotransmitters in the central and peripheral nervous system. Acetylcholine receptors are nicotinic (ionotropic) and muscarinic (metabotropic GPCR). In skeletal muscle of adults, acetylcholine binds to the alpha subunit of the nicotinic channel, which are two of the five subunits that make up the pore of this channel. Acetylcholine released by the nerve ending binds to the receptor in the sarcolemma and triggers an electrical current - the action potential. This spreads along the sarcolemma and causes a signal to pass from the T tubule to the sarcoplasmic reticulum in the triad, which then releases calcium ions (Ca ++). Once the calcium ions are released, by diffusing between the actin and myosin protein filaments, they cause the myofibrils to contract. On the other hand, in cardiac and smooth muscle cells, acetylcholine binds to 7M proteins, which do not function as channels, but are typical members of the GPCR class A superfamily. One of the physiological mechanisms of acetylcholine is the regulation of the heart rate, through the mobilization limited to the inner face of the plasma membrane of the dimer bg of protein G. This dimer transduces the specific binding of the ligand with its receptor in the plane of the membrane, thanks to its proximity with the ion channel or with enzymes bound to the plasma membrane. This can be done because its g subunit remains attached to the inner face of the membrane.
Minerals and rocks have cultural value and both are used in manufacturing and
technologic industries. Minerals and rocks improve the quality of our lives.
True
False
This type of energy splits nuclei or combines them
a. Chemical energy
b. Nuclear energy
c. Electrical energy
d. Mechanical energy
Answer:
B. Nuclear energy
this type of energy splits nuclei or combines them.
what is the function of peroxisomes ?
Answer:
Peroxisomes play a key position in the oxidation of precise biomolecules. They additionally contribute to the biosynthesis of membrane lipids recognized as plasmalogens. In plant cells, peroxisomes elevate out additional functions, together with the recycling of carbon from phosphoglycolate for the duration of photorespiration.
Explanation:
Add.
+ 5
Enter the sum in the box as a mixed number in simplest form.
Bank and
Answer:
5 hi hi hi hi hi hi hi hi hi hi hi hi
Genes for body color (B black dominant to b yellow) and wing shape (C straight dominant to c curved) are located on the same chromosome in flies. If single mutants for each of these traits are crossed (i.e. a yellow fly crossed to a curved-wing fly), and their progeny is testcrossed, the following phenotypic ratios are observed among their progeny.
Black, straight 17
yellow, curved 12
black, curved 337
yellow, straight 364
Required:
Calculate the map distance between B and C.
Answer:
Map distance = Genetic distance, GD = 3.9 MU ≅ 4 MU
Explanation:
The more separated two genes are, the more chances of recombination there will be. The closer they are, the fewer chances of recombination there will be. Two genes that are very close will have a few recombination events and are strongly bounded.
To analyze the recombination frequency, we have to know that:
1% of recombination = 1 map unit = 1centi Morgan = 1,000,000 base pairs. And that the maximum recombination frequency is always 50%.The map unit is the distance between the pair of genes for which every 100 meiotic products one of them results in a recombinant one.
Knowing that the genes are linked, we can calculate genetic distances between them. First, we need to identify the genotypes of the parental gametes with the ones of the recombinants. We can recognize the parental gametes in the descendants because their phenotypes are the most frequent, while the recombinants are the less frequent. So:
Parentals:
black, curved 337yellow, straight 364Recombinants:
Black, straight 17yellow, curved 12To calculate the recombination frequency we will make use of the next formula: P = Recombinant number / Total of individuals.
P = Recombinant number / Total of individuals.
P = 17 + 12 / 337 + 364 + 17 + 12
P = 29 / 730
P = 0.039
The genetic distance (GD) will result from multiplying that recombination frequency (P) by 100 and expressing it in map units (MU).
GD = P x 100
GD = 0.039 x 100
GD = 3.9 MU ≅ 4 MU
Which mutation(s) cause the product to be a non-functional protein?
a.Nonsense and Missense c.ilent and Nonsense b. Frameshift and Missense
d. Nonsense and Frameshift
Answer:
The correct answer is - option D. nonsense and frameshift.
Explanation:
If there is a change in the sequence of DNA resulting in premature stop codon mRNA during transcription is known as a nonsense mutation and result in a non-functional protein.
a frame-shift mutation takes place when at least two nucleotides are altered and there are less chances to be changed by two others coding for the same nucleotide. It leads to a non-functional protein.
