Speed up or slow down the cell cycle are functions of external regulators of the cell cycle.
The regulation of cell proliferation, growth and DNA synthesis are controlled by the regulatory machinery of the cell cycle.
Cell cycle progression is activated directly by a series of heterodimers formed by cyclins and cyclin-dependent kinases (CDKs).
Cyclin D, by forming a complex with the cyclin-dependent kinases CDK4, activates the action of the kinase whose main substrate is the Rb protein. Cyclin D are proteins that respond to external signals in cells and execute responses such as acceleration of the cell cycle.Cyclin D1 is a protein encoded by the CCND1 gene this acts on the cell cycle by accelerating the G1 phase.In the hypophosphorylated state, the Rb tumor suppressor protein is active and performs its function by inhibiting cell cycle progression.Therefore, we can conclude that speed up or slow down the cell cycle are functions of external regulators of the cell cycle.
Learn more here: https://brainly.com/question/22558385
Bio
Which of the following processes only occurs during endocytosis? (Pearson, 2011)
. A larger movement of molecules occurs that requires the participation of transporter molecules.
b. A movement of substances occurs from a medium where there is higher concentration to a medium of lower concentration.
c. The cell moves large molecules or particles into it, encompassing them in an invagination of its cytoplasmic membrane.
d) Substances move against their concentration gradient and therefore require the expenditure of metabolic energy.
Answer:
C
Explanation:
Endocytosis refers to the process of a cell 'consuming' a large particle and keeping them in its cytoplasmic membrane.
difference between autosomes and gametes
Answer:
An autosome corresponds to a somatic chromosome, which defines structural and functional characteristics in an individual, while the gamete is a cell containing autosomes, useful in sexual reproduction.
Explanation:
The somatic chromosomes are called autosomes, since they contain the genetic information necessary to define the structure and functions of a living being. In humans, there are 23 pairs of chromosomes, of which 22 pairs correspond to autosomes.
The gametes, or sex cells, are in charge of transmitting the genetic information from parents to offspring, and are formed by chromosomes. As gametes are haploid cells, they possess half of the chromosome load, that is, in the human being there are 22 autosomes.
Generally speaking, an autosome is a somatic chromosome, while a gamete is a cell containing autosomes.
what are the products (things made) in photosynthesis
Answer:photosynthesis starts from the sun then the energy from the sun goes to the plants and trees producing food for animals and such.
Explanation:
DNA replication for ttacg
Answer:
In DNA replication for a TTACG sequence the complementary strand would have the AATGC sequence.
Explanation:
DNA replication is the production of a new strand from an existing strand. The order of the sequence of nitrogenous bases of the new strand is complementary to the original base sequence, taking into account the complementarity of bases, where a purine binds to a pyrimidine:
A=TG≡CAccordingly, if the sequence on the original strand is TTACG, the sequence on the new complementary strand is AATGC.
Sasha could run one mile in 10 minutes last year. She can run a mile in 8 minutes this year. By what percent did her timing improve?
Answer:
20% correct me if i am wrong
Explanation:
Soraya left some soup in the refrigerator. She looked at the soup every day, but she always decided not to eat it. After five days, she started to see mold growing on the surface of the soup. She looked up mold online and found that mold is made of fungal cells. If she ate the soup before she saw the mold, on day 4 when it was still growing, would she have gotten sick?
Answer:
She didn't see the mold growing because mold cells at the start are way to small for the human eye to see. Because of the growth after 5 days, it became visible. She would still get sick because the mold cells are still there, even though mold cells are too small for to see.
Explanation:
i hope this helps
1 point
Box A
D
1
F
Choose
This is a required question
What is one benefit of using SI units?
Answer:
The greatest advantage of SI is that it has only one unit for each quantity (type of measurement). This means that it is never necessary to convert from one unit to another (within the system) and there are no conversion factors for students to memorize. For example, the one and only SI unit of length is the metre (m).
Explanation:
Hope this helped, Have a Great Day!!
If a black guinea pig Bb were crossed with a white guinea pig bb, what would be the resulting phenotypic ratio?
Answer:
1:1 because one black guinea pig to every 1 white guinea pig.
I need help please, it's for biology
Answer:
the answer to your question is glucose
Answer:
it should be light
Explanation:
as photosynthesis uses the energy of sunlight to convert water and carbon dioxide (reactants) into high-energy sugars and oxygen (products).
Amylases break downs cellulose into glucose and fructose
True or false?
Answer:
False amylase does not break down cellulose into glucose and fructose.
Explanation:
please helpppppppppppppp
15. Which of the following would only eat eucalyptus leaves?
O Carnivore
Detritivore
Herbivore
O Omnivore
PLS WILL REWARD I SWEAR TO GODDD
10 PTS! What is a good idea for a scientific experiment?
An experiment is a procedure carried out to support, refute, or validate a hypothesis. Experiments provide insight into cause-and-effect by demonstrating what outcome occurs when a particular factor is manipulated. scientific problem is something you don't understand but you can do an experiment to help you understand. Scientific problems are usually based on observation of scientific phenomena.
well, here are two ideas.. you can pick one you like.
First one - Skittles Science
A Lesson in: Stratification
A great way to get rid of extra candy, this easy science experiment for kids uses Skittles and whatever liquids you want to use. The idea is, the candy is made of ingredients that dissolve, so kids get a chance to guess which liquid will make the Skittles dissolve the fastest. Get more info over at Little Bins for Little Hands.
Messiness factor: 2 sponges
Second one - Pasta Rocket
Believe it or not, you can create a very simple hybrid rocket engine using nothing but some yeast, hydrogen peroxide, a jar, fire and ... a piece of uncooked pasta.
When you mix the yeast and hydrogen peroxide together, they react and create pure oxygen gas. When this gas is funneled through a piece of pasta, all you need is a little bit of fire and you've got yourself a pasta rocket.
What is glycolysis ?
Answer:
the breakdown of glucose by enzymes, releasing energy and pyruvic acid.
Explanation:
what evidence supports a conversation law?
Explanation:
The evidence that supports the conservation law is that Carbon dioxide becomes glucose and oxygen during photosynthesis. The law of conservation of mass states that in a chemical reaction, mass is neither created nor destroyed.
Answer:
Chlorophyll converts sunlight to chemical energy during photosynthesis.
Explanation:
Three forms of energy come into play in the functioning of an ecosystem:
* the electromagnetic radiation of short-wavelength (light),
* the electromagnetic radiation of long-wavelength (infrared: heat),
* chemical energy (in the form of organic molecules: sugars, etc.).
The conversion of light energy into chemical energy takes place in plants: it's photosynthesis.
2. Explain where a person’s DNA comes from.
Answer:
Each cell in your body has DNA, but the DNA formation was influenced by your parents. Their genes formed your genes.
14. Which pair of atoms are ions?
PLZ HELP I REALLY NEED IT
What is a function of the integumentary system?
absorbs water
grows new tissue
breaks down chemical bonds in food
forms blood clots
The function of the integumentary system is that it grows new tissue.
The integumentary system is know as the largest organ system of the body. This is also called skin. The two main layers of the skin includes
epidermis anddermisThe epidermis is the most superficial layer of the skin. The maintenance of a healthy epidermis helps protecting the body and it depends upon three processes being synchronised:
desquamation(shedding) of the keratinised cells from the surfaceeffective keratinisation of the cells approaching the surfacecontinual cell division in the deeper layers with newly formed cells being pushed to the surface.Therefore, the function of the integumentary system is that it grows new tissues in the epidermis layer which helps in the protection of the body.
Learn more here:
https://brainly.com/question/1476667
Reduction division during meiosis is one of the reasons diversity occurs in
natures. Which of the following examples represents this process?
A: a human cell with n chromosmes forms a cell wih 2n chromosomes.B: two cells from a horse that contain 64 chromosomes divide to fo 4 cells that also have 64 chromosomes.C:a tomato that has a diploid cells with 24 chromosmes forms gametes with 12 chromosmes. Or D: q cat’s cells with 19 chromosomes, fuse together to form diploid gametes.
Answer:
C
Explanation:
in meiosis the number of chromosomes decreases ( since its reduction division) and c is the only case where this happens
The example that represents the process of meiosis is a tomato that has a diploid cells with 24 chromosomes forms gametes with 12 chromosomes. The correct option is C.
What is meiosis?Meiosis is a type of cell division that occurs in reproducing organisms and results in a reduction in the number of chromosomes in gametes (egg and sperm).
Body (or somatic) cells in humans are diploid, with two sets of chromosomes (one from each parent).
Meiosis is the process by which egg and sperm cells are formed. Mitosis is a necessary process for life.
A cell duplicates all of its contents, including its chromosomes, and splits to form two identical daughter cells during mitosis.
Meiosis is a type of cell division that produces four gamete cells while reducing the number of chromosomes in the parent cell by half. This process is necessary for the production of egg and sperm cells for reproduction.
Here, a tomato that has a diploid cells with 24 chromosomes forms gametes with 12 chromosomes, shows meiotic division.
Thus, the correct option is C.
For more details regarding meiosis, visit:
https://brainly.com/question/29383386
#SPJ2
How should the model be labeled to describe the chromosomes during meiosis?
A
B
C
D
Answer:
i believe its C
Explanation:
8. Which body system absorbs oxygen? ____________________________________________
9. Which body system distributes oxygen? __________________________________________
10. Which body system absorbs nutrients? ___________________________________________
11. Which body system distributes nutrients? ________________________________________
12. What organism aids your body with digestion? ____________________________________
Answer:
8. respiratory system
9.circulatory system
10.digestive system
11. circulatory system
12. e.coli, pro-biotic bacteria/enzymes
Explanation of 12:
Lactic acid bacteria and Bifidobacteria are two important types of gut bacteria, which are autochthonous ones from birth or acquired from digested food. Lactobacillus and Leuconostoc spp. are the main lactic acid bacteria found in the human intestine.
Explain how a pond could become a swamp.
Answer:
if lots of plant life began to grow in it, the soil started to erode to make it muddy and unstable, and it was perpetually damp, moist and humid, certain creatures would start to live there and it would be very close to becoming a swamp
Explanation:
The third level of classification is
can someone please help me .
Answer:
C - Enzymes slow the reaction so more products can be produced.
Explanation:
Hope this Helps!
Have a great Day! :D
Why is the sequence of amino acids important to protein function?
Multiple choice question.
A)
The sequence of amino acids doesn't have an effect.
B)
The order of the amino acids can be read like a code to assemble DNA.
C)
The order of amino acids determines the shape a protein will take.
D)
Amino acids can only be combined in a specific order, otherwise, the bonds will fall apart.
Which describes the polarity in a water molecule?
partial negative charge on the ancygen atom because its electrons are pulled toward the hydrogen
atoms
partai negative charge on the cygen atom because it pulls electrons from the hydrogen atoms
partial positive charge on the oxygen atom because it pulls electrons from the hydrogen atoms
partial positive charge on the oxygen atom because its electrons are pulled toward the hydrogen atoms
Which describes the polarity in a water molecule?
There is partial negative charge on the oxygen atom because it pulls electrons from the hydrogen atoms.
Hope this helps! Please correct me if I'm wrong :)
is formed when one or more than one atom bonds to another atom
Answer:
Compounds
Explanation:
Atoms that are chemically bonded are compounds(2 or more)
why cell differentiation is important in the development and growth of a baby from a fertilised egg.
because babies need different types of cells to do different jobs as the fertisiled egg starts to divide each cell specialises to from a part of a body
As the fertilized egg begins to divide, each cell becomes specialized to come from a portion of the body because kids need various types of cells to perform various tasks.
What is the role of cell differentiation in infant?A multicellular creature requires differentiated cells because they can carry out specialized tasks for the body.
Specialization, though, has a price. The trade-off is that differentiated cells frequently lose their capacity to proliferate.
When discrete tissue layers first emerge during a process known as gastrulation in vertebrates, differentiation starts.
Cell differentiation is a crucial process through which a single cell gradually evolves, enabling development that leads to the formation of diverse organs and tissues.
Therefore, for growth and development of baby cell differentiation is important.
Learn more about cell differentiation here:
https://brainly.com/question/12055051
#SPJ5
What are lymph nodes and where are they found?
Answer:
lymph flows through the lymph nodes. Lymph nodes themselves are each of a number of small swellings in the lymphatic system where lymph is filtered and lymphocytes are formed. They can be found at the neck, underarms, chest, abdomen, and groin
Explanation:
