Answer:
villi is used and is very imp as it has structure like finger type which help for increase in surface area for more absorption and less wastage of water/minerals
Answer:
villi have a cell wqll
Explanation:
why can a student see her reflection on a computer moniter when the monitor is turned off
Answer:
Because the screen becomes black and the screen lets the light come. Hope this helps!!
Explanation:
Based on this information, what is the minimum size of a codon for these hypothetical martian life-forms?.
Answer:
george is cute
Explanation:
regulation of the cell cycle is dependent on cyclins and cyclin-dependent kinases. the key that allows a cell to progress beyond the restriction point is
The key that allows a cell to progress beyond the restriction point is the phosphorylation of specific proteins (for example RB) by Cdk. The cyclin-dependent kinases (CDKs) are able to phosphorylate different substrates.
Cyclins regulate the progression of the cell cycle by their interaction with cyclin-dependent kinases (Cdks).
This binding activates the Cdks, thereby converting them into functional enzymes that phosphorylate target proteins and thus regulate cell cycle progression by bypassing restriction points of the cell cycle.
CDKs can phosphorylate different substrates by transferring phosphate groups from adenosine triphosphate (ATP) to specific amino acidic residues in these substrates.
For example, CDKs phosphorylate Rb proteins and thus regulate their activity during the cell cycle.
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How is the gametophyte stage in gymnosperms different from the gametophyte stage of mosses
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Which muscle extends the knee, laterally rotates the tibia, aids in abduction and medial rotation of the femur, and tautens the iliotibial tract to brace the knee when the opposite foot is lifted
The popiletus muscle is the muscle that extends the knee , laterally rotates the tibia.
The popliteus muscle is a little muscle that extends the knee and form muscle the floor of the popliteal fossa. It is part of deep posterior leg muscles, that rotate laterally tibialis posterior, flexor digitorum longus and flexor hallucis longus.
The popliteus muscle extends to the knee joint. It is formed from the femur and the posterior horn of the lateral meniscus, and also extend to the proximal tibia.
The popliteus muscle help to function in an gait cycle by causing the flexion of the extended (“locked”) knee.
Therefore, The popiletus muscle is the muscle that extends the knee , laterally rotates the tibia.
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Clouds form when the water vapor in air condenses as
Answer:
Clouds form when the invisible water vapor in the air condenses into visible water droplets or ice crystals. For this to happen, the parcel of air must be saturated, i.e. unable to hold all the water it contains in vapor form, so it starts to condense into a liquid or solid form.
Explanation:
How the Phosphorus cycle differ than carbon, nitrogen, and water cycles?
Answer:
The two cycles include two different elements. The other large difference between these two cycles is that carbon cycles through the atmosphere whereas phosphorus does not . The phosphorous cycle is also slower than the carbon cycle.
atp molecules provide energy for cellular activities by
Write a journal entry from the perspective of a particle of light, called a photon. Your story should follow the photon as it travels from a star in the Milky Way that is 25 light years away from Earth, all the way to the eye of a young person gazing up at the night sky through their bedroom window. Compose your entry in complete sentences. Be sure to answer these questions in your journal entry: • How long was the journey to Earth? • How fast did you travel? • Was your speed affected when you entered Earth’s atmosphere? If so, how? • Was your speed affected when you traveled through the glass of the window? If so, how? • What was the journey like to get to the retina?
Answer: i got your back
Astronomy (from Greek: ἀστρονομία, literally meaning the science that studies the laws of the stars) is a natural science that studies celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, and comets. Relevant phenomena include supernova explosions, gamma ray bursts, quasars, blazars, pulsars, and cosmic microwave background radiation. More generally, astronomy studies everything that originates beyond Earth's atmosphere. Cosmology is a branch of astronomy that studies the universe as a whole.[1]
Astronomy is one of the oldest natural sciences. The early civilizations in recorded history made methodical observations of the night sky. These include the Babylonians, Greeks, Indians, Egyptians, Chinese, Maya, and many ancient indigenous peoples of the Americas. In the past, astronomy included disciplines as diverse as astrometry, celestial navigation, observational astronomy, and the making of calendars. Nowadays, professional astronomy is often said to be the same as astrophysics.[2]
Professional astronomy is split into observational and theoretical branches. Observational astronomy is focused on acquiring data from observations of astronomical objects. This data is then analyzed using basic principles of physics. Theoretical astronomy is oriented toward the development of computer or analytical models to describe astronomical objects and phenomena. These two fields complement each other. Theoretical astronomy seeks to explain observational results and observations are used to confirm theoretical results.
Astronomy is one of the few sciences in which amateurs play an active role. This is especially true for the discovery and observation of transient events. Amateur astronomers have helped with many important discoveries, such as finding new comets.
Explanation:
HELPPPPPPPPPPPPPPPPPP
A: equilateral and right
B: equilateral and isosceles
C: isosceles and scalene
D: isosceles and right
Answer:
D, Isosceles and right
Explanation:
you already know it's right bc of the little 90 degrees box so the only two right answers could be A and D but its not A bc all the sides aren't the same length so its D. Hope this helped! :)
the three steps that are required for dna replication are
Replication occurs in three major steps: the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment.
The three steps that are required for DNA replication are initiation, elongation and termination.
What is DNA replication ?The process in which DNA of a cell under go duplication to produce two copies during S-phase of cell cycle called as DNA replication.
It involves 3 steps such as initiation step where the origin of replication of DNA molecule undergo unwinding into two DNA strands.
An incomplete unzipping by forming replication fork is created is catalyzed by the helicase enzyme.
Secondly in elongation step the DNA polymerase enzymes make the complementary sequence against each parent template strand.
It is an unidirectional, one strand which is synthesized in a continuous manner called leading strand, the strand which is synthesized in a discontinuous manner called lagging strand with Okazaki fragments.
Termination occurs in the last step, when the parent molecule has been completely replicated.
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How is the Calvin Cycle different from the light dependent reactions?
A. It requires light
B. It takes place in chloroplasts
C. It takes place in the Stroma
D. It takes place in the thylakoid membrane
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How does the temperature change as you move from the top to the bottom of
the thermosphere?
A. It stays the same.
B. It changes randomly.
C. It increases
D. It decreases
Laws, theorie
Question 4 of 10
Newton's second law of motion states that the acceleration of an object
depends on the force exerted on it, divided by its mass. This law can be
summarized by the equation F = mx a.
Why is this a law and not a theory?
A. Newton's statement involves mathematics. A theory is a
description based on observations,
OB. Newton's statement describes the relationship between mass,
acceleration, and force. A law is an explanation of natural events.
O C. Newton's statement is supported by research. A theory is only an
educated guess
D. Newton's statement has been proved with scientific evidence. A
theory can change when new evidence is found that does not
support the theory
SUBMIT
The second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object. The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object.
Answers won't help, but a hint will.
Answer:
Its D
Explanation:
Took the test
A person wakes up at the same time every day and always feels hungry shortly after he wakes up. These two events would correspond with the
a. pineal gland controlling calcitonin, followed by thyroid gland controlling thyroid hormone
b. pineal gland controlling melatonin, followed by thyroid gland controlling thyroid hormone
c. pineal gland controlling melatonin, followed by parathyroid gland controlling thyroid hormone
d. pineal gland controlling melatonin, followed by thyroid gland controlling parathyroid hormone
Answer:
A
Explanation:
what is the purpose of a broth in a microbiology laboratory
each upward movement of the basilar membrane causes the stereocilia of the inner hair cells to bend, opening __________ gates.
which joint is considered the most flexible joint in the body?
Answer:
The shoulder.
Explanation:
The shoulder is the most flexible joint in the body, making it the most susceptible to instability and injury. This mobility provides the upper extremity with tremendous range of motion. The shoulder join is also known as a 'ball-and-socket' joint.
Some researchers argue that the robust australopiths should be classified in a separate genus. What is that genus called
Answer: Researchers argue that robust Australopithecines should be classified in a separate genus called Paranthropus.
Explanation: The "robust" australopiths are a group of fossil hominins that existed in East and southern Africa between approximately 2.5 and 1.4 million years ago (Ma). They are referred to here as members of the genus Paranthropus, though considerable disagreement about their proper taxonomy persists. (credit to the internet)
Which of the following is a lipid-protein substance produced by neuroglial cells?
Answer:
Myelin
Explanation: is correct
Answer:
3: Myelin
Explanation:
Protein is digested completely in the
Answer:
from the stomach to the small intestine
Why is apoptosis important to cells.
Most water is used for irrigation and crop. What is one way to help conserve water in relation to agriculture?
Answer:
Drip Irrigation
Explanation:
5. It is the process of separating coconut pulp (sapal) from coconut milk.
A on stallization B. disollation C. filtration
D. flotation
Answer:
the answer is c
Explanation:
filtration
what is the process which increases carbon dioxide levels in the air
Answer:
organisms respire or decompose (decay)
Monomers can be thought of as
A. highly unstable compounds.
B. Lego pieces or building.
C. long chain compounds.
Answer: B
Explanation:
Monomers are atoms or small molecules that bond together to form more complex structures such as polymers (which are long chain compounds)
Monomers are long chain compounds. So, the correct option is (C).
What are Monomers?A monomer is defined as a molecule which can react with other monomer molecules to form a larger polymer chain. It is also a three-dimensional network formed by a process called polymerization.
These are the molecules of any of a class of compounds mainly organic compounds which can react with other molecules to form very large molecules known as polymers.
Examples of monomers are glucose, vinyl chloride, amino acids and ethylene where each monomer is linked to form different types of polymers like glucose, glycosidic bonds which link sugars to form polymers like glycogen, starch and cellulose binds monomers.
Thus, Monomers are long chain compounds. So, the correct option is (C).
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In the GAL gene system, ________ are cis-acting regulatory elements, and the ________ protein is a trans-acting regulatory protein.
Answer:
UASG; Gal4
Explanation:
After cytokinesis I of meiosis, the chromosomal makeup of each daughter cell is…?
a) haploid, and the chromosomes are each composed of a single chromatid
b) haploid, and the chromosomes are each composed of two chromatids (which might be unique due to cross over)
c) diploid, and the chromosomes are each composed of two IDENTICAL chromatids
d) haploid, and the chromosomes are each composed of two IDENTICAL chromatids
e) tetraploid, and the chromosomes are each composed of two chromatids (which might be unique due to cross
over)
f) diploid, and the chromosomes are each composed of two chromatids (which might be unique due to cross over)
Your body's 2nd choice of food group to break down for energy?
Fat
When body doesn't get carbs it uses fat.
The space that an organism in an ecosystem lives in is called a
A) community
B) population
C) habitat
D) niche
Answer:
(a)
Explanation:
community ha iska answer