The biological theory of aging known as the _______ theory suggests that cells can divide a maximum number of about 75 to 80 times and that cells become less capable of dividing as people age.
Answer:
cellular clock theory
Explanation:
Good luck & Have an amazing day :)
What are the characteristics of the mantle?
[tex] \: \: \: [/tex]
It is mostly solid rock, but less viscous at tectonic plate boundaries and mantle plumesMantle rocks there are soft and able to move plastically (over the course of millions of years) at great depth and pressure. The transfer of heat and material in the mantle helps determine the landscape of Earth.hope it helps
[tex] \: \: \: [/tex]
Answer:
Here's something i found to help.
What happens to the genetic material before the cell divides
Because each chromosome is made from a single molecule of 'DNA', before a cell divides itself, it had to replicate and copy its DNA. This makes it so that after cell division, each new cell holds an exact copy of the genetic material from the original cell.
I hope this helps! :)
pls answer fast need it now
Answer:
1 8
2 9
3 10
4 11
5 12
6 13
7 14
15
Explanation:
Leaves are modified as tendrils for climbing as in
a) Cactus
b) Pea
c)Citrus
d)Bougainvillea
Answer: pea
Explanation:
In the garden pea, it is only the terminal leaflets that are modified to become tendrils. In other plants such as the yellow vetch (Lathyrus aphaca), the whole leaf is modified to become tendrils while the stipules become enlarged and carry out photosynthesis.
Genetic variation is needed for the long-term survival of a species.
True
False
Write an equation for the line with slope -5 and y-intercept of 14? O A. y = -5x - 14 O B. y = -5x + 14 HE 0 C. y = -5x + 18 O D. y = -5x + 6 HUSS
Answer:
The equation of a line is written in the form y=mx+b. ”m” is the slope and “b” is the y-intercept. Plugging in the given values, the equation of the line is y=-5x + 14.
:)
mot nucleoxom co cau truc gom
Carbon compounds that come from living organisms are called _____ compounds.
Answer: organic compounds
in the process of genetic profiling/dna fingerprinting, what is compared between two people/samples?
Answer:
"DNA fingerprinting is a laboratory technique used to establish a link between biological evidence and a suspect in a criminal investigation. A DNA sample taken from a crime scene is compared with a DNA sample from a suspect. If the two DNA profiles are a match, then the evidence came from that suspect." information from a website so reword it a bit and you should be ok.
In the process of genetic profiling/ data fingerprinting, genetic profiling is a process that can be compared between two people/samples.
What is genetic profiling?DNA profiling compares only the most variable sections of DNA, which has an advantage over whole genome sequencing when seeking to identify genetic changes between two individuals.
In the field of biology known as comparative genomics, genome sequences from various species—including humans, mice, and a broad variety of other organisms—from bacteria to chimpanzees are compared.
"DNA fingerprinting is a lab method used to connect biological evidence to a defendant in a criminal investigation. A DNA sample from a suspect is compared to one acquired from a crime scene. The evidence originated from that suspect if the two DNA profiles match.
Therefore, genetic profiling is compared between two people/samples.
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What organism aids your body with digestion?
Answer:
mouth, esophagus, stomach, small intestine, large intestine, rectum and anxs.
At school we are taught that there is a dominant gene for brown eyes and a recessive one for blue.
In this sentence, dominant means:
A. having undergone mutation
B. of or relating to single-cell organisms
C. having reached full development, growth, or
maturity
D. producing a trait even when inherited from only
one parent
Answer:
D. Producing a trait even when inherited from only one parent
Explanation:
A dominant gene, or a dominant version of a gene, is a particular variant of a gene, which for a variety of reasons, expresses itself more strongly all by itself than any other version of the gene which the person is carrying, and, in this case, the recessive.
The spread of information from one neuron to several neurons, or from one pool to multiple pools, is known as __________.
Answer:
Divergence
Explanation:
Divergence is the answer because divergence spreads information to several neurons.
Which of the following is released during cellular respiration?
Carbon dioxide
Glucose
Mitochondria
Oxygen
Answer:
carbon dioxide ( CO2 ) is released during cellular respiration
Answer:
Carbon dioxide
Explanation:
Which items are TRUE about minerals? Select the three correct answers. (2 points)
Observing one property is often the best way to identify minerals,
Rocks are the components that make up minerals.
Minerals can only be identified by their color and hardness.
Minerals are the components that make up rocks.
O Minerals are naturally occurring substances
Minerals are made of one element or one compound of elements
Answer:
The correct answers are 1) minerals are the components that make up rocks. 2) Minerals can only be identified that make up minerals. 3) Minerals are made of one element or one compound of elements.
Explanation:
I took the test. I got this question wrong but after submitting it, the lesson should me the correct answer.
The items that are true about minerals are:
Minerals are naturally occurring substances.Minerals are inorganic and homogeneous substances, which can be found on the surface of the Earth, formed in it naturally / spontaneously.
Minerals are made of one element or one compound of elements.Minerals are found in various forms in nature since they can be of a single element, such as gold, silver, copper, or a combination of elements, such is the case of some chemical compounds such as quartz, which is formed by silicon and oxygen.
Minerals are the components that make up rocks.A rock is a material that can be made up of a mineral or a combination of them, but its chemical composition is variable.
Therefore, we can conclude that a mineral is a substance produced by processes of inorganic nature which are made of one element or one compound of elements.
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the entire period between one m phase and the subsequent m phase is called what?
Explanation:
Interphase: The entire period between one M phase and the subsequent M phase is called: interphase.
HOPE IT HELPS
in what part of the given pathway is norepinephrine secreted?
Answer:
From the varicosities of the postganglionic fiberSource: Mastering A&P #10: The Sympathetic and Parasympathetic System - QuizletSomeone plz help me :(
Answer:
it's a or c but I think it's a
Females have the chromosomes XY.
True
False
Answer:
False
Explanation:
The X chromosome is one of two sex chromosomes. Humans and most mammals have two sex chromosomes, the X and Y. Females have two X chromosomes in their cells, while males have X and Y chromosomes in their cells
(Hope this helps can I pls have brainlist (crown)☺️
Answer:
false
Explanation:
female have XX
What change in the mass number of a nucleus occurs when the nucleus emits an alpha particle?
Answer:
Protons are positively charged. When a nucleus emits an alpha particle, these changes happen: the mass number decreases by 4. the atomic number decreases by 2.
Explanation:
Protons are positively charged. When a nucleus emits an alpha particle, these changes happen: the mass number decreases by 4. the atomic number decreases by 2.
Why are crystals in minerals formed from magma larger than mineral crystals formed from lava?
Answer:
Magma cools slowly inside Earth, which gives mineral crystals time to grow large enough to be seen clearly. Lava cools much more rapidly than magma when it is below the surface. In a cooling lava, mineral crystals do not have time to form and are very small.
Where does the light reaction of photosynthesis take place
Answer:
Takes place in the thylakoids.
A stack of thylakoids is the granum.
Answer:
Light reaction takes place in the thylakoid discs.
Within the cell, vacuoles can be thought
of as which of the following?
Answer:
B. warehouses
Explanation:
i just paid attention in class. Is that a good enough explanation?
Around what time was the cure for scurvy found?
Explanation:
During the Age of Sail, it was assumed that 50 percent of the sailors would die of scurvy on a major trip. A Scottish surgeon in the Royal Navy, James Lind, is generally credited with proving that scurvy can be successfully treated with citrus fruit in 1753.
Answer:
in 1747 by James Lind ......
Which of the following best describes differences between birds and reptiles?
O Birds are endothermic and have four-chambered hearts, while reptiles are ectothermic and have three-
Birds have feathers a brain and sensory organs, while reptiles have scales and a brain but lack senso
Birds are vertebrates and have specialized lungs, while reptiles are invertebrates and have gills and sca
Birds lay eggs and are ectothermic while reptiles undergo internal fertilization and are endothermic.
Answer:
(A) Birds are endothermic and have four-chambered hearts, while reptiles are ectothermic and have three-chambered hearts.
Explanation:
got it right on the test
Birds and reptiles both belong to the animal kingdom. Reptiles are ectothermic and have three-chambered hearts, whereas birds are endothermic and have four-chambered hearts. Thus, option A is correct.
What are the characteristics of birds and reptiles?Birds and reptiles both belong to the kingdom Animalia and are chordates. They both have vertebral columns and the presence of the backbone. They share many similarities and differences in their physical appearances.
The birds are endothermic and can maintain constant body tempearture regardless of the external environment. While reptiles are ectothermic (cold-blooded) and regulate their temperature based on the external environment.
The birds have four-chambered hearts like mammals that separate the oxygenated from the de-oxygenated blood, whereas the reptiles have three-chambered hearts with one ventricle and two atria.
Therefore, the birds are endothermic, and reptiles are ectothermic.
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Imagine for a moment that a large artery formed two branches carrying blood to two different organs. Branch 1 has a radius of 0.5 cm and Branch 2 has a radius of 1.0 cm. If the blood flow rate in Branch 1 is 2ml/min, what do you expect the blood flow rate of Branch 2 to be
The flow rate through Branch 2 is 8·√2 ml/min
Reasons:
Radius of Branch 1 = 0.5 cm
Radius of Branch 2 = 1.0 cm
Flow rate, Q = Velocity, V × Area, A
The area of the Branch 1 = π × 0.5² = 0.25·π
We have;
[tex]\dfrac{v_1^2}{r_1} = \dfrac{v_2^2}{r_2}[/tex]
Which gives;
[tex]v_2 = \mathbf{\sqrt{\dfrac{v_1^2}{r_1} \times r_2}}[/tex]
[tex]The \ velocity \ of \ Branch 1 , \ v_1 = \dfrac{2}{\pi \times 0.5^2} = \dfrac{8}{\pi}[/tex]
Therefore;
[tex]v_2 = \sqrt{\dfrac{\left(\dfrac{8}{\pi} \right) ^2}{0.5} \times1} = 8 \cdot\dfrac{\sqrt{2} }{\pi}[/tex]
[tex]The \ flow \ rate, \ Q_2 = 8 \cdot\dfrac{\sqrt{2} }{\pi} \times \pi \times 1^2 = 8 \times \sqrt{2}[/tex]
The flow rate through Branch 2 = 8·√2 ml/min
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what species accepts electrons in the final step of the electron transport chain?
Answer:
Oxygen
Explanation:
Because it’s oxygen I don’t know ♀️
describe the function of the denticulate ligaments
Answer:
The function of the denticulate ligament is the stabilize the spinal cord in the vertebral canal.
A key limitation of the coefficient of community is that it lacks the ability to:
Answer:
calculate the similarity between two communities.
Explanation:
Two brothers have thick hair that grows over their faces and most of their bodies.
This human disorder, called Ambra's Syndrome, shows X-linked dominant inheritance. The
mother of the boys is also affected by Ambra's Syndrome, although her excessive hair growth
occurs in various, scattered patches on her skin rather than a continuous coverage like her sons.
What is the most likely explanation for the patchy expression of hairlessness on the mother's
skin?
The most likely explanation for the irregular expression of hairlessness on the mother's skin is codominance
Codominance is a biological term to refer to the hereditary pattern that is characterized by:
In the heterozygous state, there is no recessive allele, but both behave as dominant. Codominance is characterized by the manifestation of both characteristics as dominant, without mixing.According to the above, the irregular expression of the lack of hair in the mother is a manifestation of the codominance of the hair gene and the hairless gene that do not mix but are seen independently.
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