Answer:
Internal and external regulators are two types of proteins that regulate the cell cycle. Internal regulators allow the cell cycle to proceed only after certain events occur. External regulators speed up or slow down the cell cycle.
Explanation:
I hope this helps :)
The two types of proteins that regulate the cell cycle are Cyclins and Cyclin-dependent Kinases (CDKs). These two groups of proteins are responsible for the progress of the cell through various checkpoints.
What are Proteins?
Proteins are made up of hundreds or thousands of smaller units called Amino acids. They are large, complex molecules that play many critical roles in the body. They do most of the work in cells and are required for the structure, function, and regulation of the body’s tissues and organs.
Cyclins regulate the cell cycle only when they are bound to Cdks and become fully active. The Cdk/cyclin complex must be phosphorylated, which further initiates other proteins to be phosphorylated that advances the cell cycle.
Retinoblastoma (Rb), is another group of tumor-suppressor proteins that regulates the cell cycle by monitoring the cell size.
Therefore, there are two types of proteins that regulate the process of the cell cycle are Cyclins and Cyclin-dependent Kinases (CDKs).
To learn more about the Cell cycle, refer to the link:
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Which of the following best describes a mutation?
a change in a gene
a section of a chromosome that codes for a trait
anything that can damage a gene
a distinguishing quality that can be passed from one generation to another
What is a condition where the nervous system causes a muscle contraction or shortening of muscle fibers?
A. Muscular response
B. Motor response
C. Muscular movement
D. Motor movement
HELP MEEE,!!!!! PLEASE
Answer:
C
Explanation:
spindle fibers are important during metaphase. division stops without them.
Please help with all three will mark brainliest
Answer:
cells and tissue are the most basic level
then it is the bladder as it is connected to the kidney
and then the muscular system as it is chewing
Explanation:
How does gene flow directly contribute to evolution?
Answer:
Evolution can also occur as a result of genes being transferred from one population to another. This gene flow occurs when there is migration. The loss or addition of people can easily change gene pool frequencies even if there are no other evolutionary mechanisms operating.
Explanation:
hope this helps!!!
One day you experience violent thunderstorms followed by a few days of colder weather. Which type of front most likely moved through your area? occluded front stationary front warm front cold front
Answer:
d
Explanation:
The whether occurrence as described in the question is caused by the cold front.
What is a front?In discussing about weather, a front refers to a region in which there is a transition between air masses on the earths surface. The occurrence of various types of front is the reason behind different types of whether patterns.
The violent thunderstorms followed by a few days of colder weather is caused by a cold front.
Learn more about whether fronts: https://brainly.com/question/16357973?
In molecular compounds molecules bonded tk gether by____
a) covalent bond
b)metallic bond
c)ionic bond
d)none of them
Answer:
a) Covalent bond
Explanation:
Atoms of different element are held together in molecules by covalent bonds in which atoms share their valence electrons with each other.
mitosis and cell cycle definition
Answer:
mitosis definition: a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth.
cell cycle definition: A cell cycle is a series of events that takes place in a cell as it grows and divides. A cell spends most of its time in what is called interphase, and during this time it grows, replicates its chromosomes, and prepares for cell division.
____ currents inside Earth might drive plate motion.
a.
Vertical
c.
Horizontal
b.
Convection
d.
none of the above
Please select the best answer from the choices provided
Answer:
B. Convection
Explanation:
Which sentence best represents the relationship between the process of subduction and the rock cycle?
A.
Subduction creates rocks.
B.
Subduction destroys rocks.
C.
Subduction recycles rocks.
D.
Subduction sorts rocks.
Answer:
C. Subduction recycles rocks.
How will increased temperatures affect water in California?
Answer:
Rising temperatures also increase the rate at which plants transpire water into the air to keep cool, so irrigated farmland would need more water.
Explanation:
HELP HELP HELP
THERES ONLY 1 RIGHT ANSWER
Directional selection drift
Disruptive/divergent selection drift
Fitness
DNA
Artificial selection
Vestigial structure
Homologous structure
Convergent evolution
Niche
Strong big one
Thin needle nose
Behavioral selection
Genetic variation
Answer: dna
Explanation:
What figurative term is "merry hell"?
onomatopoeia
personification
oxymoron
hyperbole
1. In the fast change, how are other parts of the ecosystern affected?
Answer:
is there more to this question because this doesn't make sense.
Explanation:
Help!! When a virus gets into the body, some body cells
are................
Carbon Cycle activity part 2
(photos attached)
2. In restaurants, most food contact surfaces are smooth and lack cavities/pores in their surface. What is the advantage of that for microbial control?
Answer:
Microbes and Bacteria can be killed more easily and so they cant hide in the little pores.
Explanation:
I NEED HELP PLSSSSS !!! I WILL MARK BRAINLEIST
Read the passage. Then explain the ways humans have influenced the traits in corn plants and the impacts each biotechnology has had.
Passage
Many of the types of corn found in grocery stores were originally bred for their taste and productivity. But these varieties are often threatened by pests. This makes it harder for farmers to produce enough corn.
Scientists have used genetic engineering to make GMO corn plants that are resistant to pests. In one type of GMO plant, they added genes from bacteria that live in soil. The genes let the GMO plants produce a bacterial protein that kills certain insects.
Answer:
It decreases cost of production on the crop as well as increase production.
Explanation:
It is a very efficient method to save a corn plant from the attack of bacteria. This method is used in almost each and every plant in order to make it resistance against harmful pests and microorganism. By using this technology, the cost of production on the growing of crop decreases which gives more profit to the farmers as well increase the overall productivity of that corn crop.
Answer:
One of the ways we have influenced the traits in corn is through selective breeding. We now have taller plants, and bigger ears of corn, that taste better. Another way we have influenced the traits is by modifying them to be pest resistant.
Hope this helps! ✌️How would Earth be different without the greenhouse effect?
A. There would be more solar energy reaching Earth.
B. There would be more ice on Earth's surface.
C. The oceans would contain more carbonic acid.
D. The atmosphere would contain more methane.
What is the Heat Source in the experiment?
Answer:
I’m pretty sure it should be the light ;)
Explanation:
Sorry if it wrong
Match the causes with their effects.
Cause: Convection currents cycle through magma.
Cause: Unstable isotopes inside Earth release energy.
Cause: Iron in Earth’s outer core swirls due to convection currents.
Effect: Radiogenic heat is released.
arrowRight
Effect: Earth has a powerful magnetic field.
arrowRight
Effect: Tectonic plates move.
arrowRight
1. Effect: Radiogenic heat released- Cause: convection currents cycle through magma.
2. Effect: Earth has a powerful magnetic field- Cause: Iron in earths outer core swirls due to convection currents.
3. Effect: Tectonic plates move- Cause: unstable isotopes in earth release energy.
What is Convection current?Convection currents are defined as the result of differential heating where lighter, less dense, warmer materials rise while heavier, more dense, cooler materials sink. This is the movement that creates circulation patterns known as convection currents in the atmosphere, in water, and in the Earth's mantle.
Convection currents arise from differences in fluid density that arise due to a temperature gradient, resulting from the continuous replacement of the hot fluid in the region of the heat source with the nearby cold fluid which is known as the natural convection currents.
Thus, Radiogenic heat released- Cause: convection currents cycle through magma.
Learn more about Convection current, here:
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Answer:
Effect:
Radiogenic heat is released
Cause:
Unstable isotopes inside Earth release energy
----------
Effect:
Earth has a powerful magnetic field
Cause:
Iron in Earths outer core swirls due to convection currents
----------
Effect:
Tectonic plates move.
Cause:
Convection currents cycle through magma.
-----------
Explanation:
Got it right on Edmentum.
explain the full meaning of xerophytes
Answer:
xerophytes is a species of plant that has adaptations to survive in an environment with little liquid water such as a desert,ice or snow covered region.
examples are; pineapple and gymnosperm plants.
Explanation:
xerophytes are species of plants that can live in Extreme conditions like in the desert where there is very little water or in the Alps where water is frozen water
example -cactus
the evolutionary mechanism that maintains or increases diversity is?
Answer:mutation
Explanation:
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which of the following situations best displays a direct effect of a flood?
a.) a change in building regulations
b.) the destruction of a neighborhood
c.) the creation of new levees for future protection
d.) trough of wave arrives fast exposing the sea floor
Answer:
b.
Explanation:
Are frogs and birds OR frogs and horses more closely related?
A.Frogs and birds because they have the most specific taxonomic level in common.
B.Frogs and horses because they have the most specific taxonomic level in common.
C.Frogs and birds because they are both small.
D.They are all in the same taxonomic level, so they are equally related.
Name the major muscles
When Gregor Mendel crossed true-breeding tall plants (TT) with true-breeding short plants (tt), all the offspring were tall because
Answer:
Because the trait associated with "tall-ness" is dominant and shortness is recessive
Answer:
the allele for tall plants is recessive and none of the offspring received an allele for short height.
Explanation:
Thats what my teacher said^
Which is a product of
photosynthesis?
A. chemical energy
B. light
C. carbon dioxide
Answer:
carbon dioxide is the product of photosynthesis
Explanation:
A product of photosynthesis is considered by the scientific community is used to make millions of copies for the purposes of taking a large amount of a DNA sample to produce large amounts of a DNA sample for study purposes. allowing a wide- scale study..
The result of this is A, chemical energy...allowing a larger study of photosynthesis to study in detail...
How is the temperature of a location determined by energy from
the sun and the location's distance from the equator?
Answer:
Explanation: