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.

Answers

Answer 1

Answer:

cellular clock theory

Explanation:

Good luck & Have an amazing day :)


Related Questions

Pls help I'll mark brainliest

Answers

Answer:

1. Carbon dioxide

2. Water

3. Glucose

4. Oxygen

5. reactants

6. products

7. carbon dioxide

8. oxygen

9. glucose

10. water

11. chloroplast

12. chlorophyll

Explanation:

Answer:

Explanation:

glucose + oxygen        carbon dioxide + water

5. reactants                      6. products

What are the primary elements of the nervous system responsible for analyzing and transmitting information

Answers

Answer:

Neurons

Explanation:

Neurons are the fundamental units of the brain and nervous system, the cells responsible for receiving sensory input from the external world, for sending motor commands to our muscles, and for transforming and relaying the electrical signals at every step in between. Hope this helps :)

which is not true about a wave in open
Ocen?
A. the wave form noves forward, but
the water particles do not advance appreciably
B. As the wave travles, water particles pass
the energy asong by moving in a circle.
C. water particles move in a circular Path
D. water particles travel with the wave

Answers

d because the water particals travel w the waves

Answer:

D. water particles travel with the wave

Explanation:

The water particles travel with the wave is false about a wave in open Ocean. It gets scattered when passing through it.

While eating dinner, Isabelle starts choking on a grape. She can't cough, talk, or breathe. What should her mother do to help her?

*Heimlich maneuver
(or buy a LifeVac device to keep in your car for emergencies)

Answers

Answer:

c. Do the Heimlich maneuver.

Explanation: is correct. post protected

A study is conducted to evaluate the effect of competition between foxes and coyotes for a limited food source. Which level of ecology is being studied

Answers

Answer:

Community ecology!

Explanation:

I’m just did this assignment and got it right <3

A study is conducted to evaluate the effect of competition between foxes and coyotes for a limited food source. The level of ecology being studied is community ecology. The correct option is d.

What is community ecology?

The ecosystem is the fundamental unit for maintaining life, although it extends beyond species living in a single location. The recycling of resources between organisms and their environments, between organic and inorganic forms, is essential to life.

Community ecology is the study of the structure and function of communities, which are assemblages of interacting populations of species living in a certain area or habitat.

A community in ecology is a group or association of populations of two or more different species that live in the same geographical area and at the same time, also known as a biogenesis.

Therefore, the correct option is d, community ecology.

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The question is incomplete. Your most probably complete question is given below:

molecular ecology

organismal ecology

population ecology

community ecology

What is the importance of microtubules in cell division?(1 point)

They provide a pathway for organelles to move into the newly formed cell.


They reform the nucleus in the divided cell.


They organize and pull the chromosomes apart.
.

They start the process of cytokinesis.

Answers

Microtubules are very important in a number of cellular processes. They are involved in maintaining the structure of the cell and, together with microfilaments and intermediate filaments, they form the cytoskeleton. They also make up the internal structure of cilia and flagella.

Answer:

C) They organize and pull the chromosomes apart.

Explanation:

in the comments!

Hope this helps for all the other students looking for the answer!

What is the primary function of the
skeletal system?
A. Providing shape and support
B. Removing waste from the
body
C. Circulating blood throughout
the body
D. Producing offspring

Answers

Answer:

The primary function of the skeletal system is by (A) Providing shape and support.

I hope this helped at all.

A bcuz B us for respiratory system and C is for circulatory system and D has nothing to do with skeletal system so the only choice we have left is A

Unranus gas a giant, storm that rotates similar to a hurricane?
True
False

Answers

Answer:

True

Explanation:

Particulate matter released during manufacturing that does not change form in the atmosphere is considered to be

primary pollutants from a stationary source
primary pollutants from a mobile source
secondary pollutants from a stationary source
secondary pollutants from a mobile source

Answers

Answer:

I think A, "Primary pollutants from a stationary source"

Explanation:

Got it right on exam :)

Particulate matter is defined as material emitted during manufacturing that does not change form in the atmosphere and is a primary pollutant from a stationary source. The correct option is a.

What is particulate matter?

One of the least evident types of pollution is particulate particles. NOT the case for pollution from particle matter. Particle pollution, commonly known as particulate matter (PM), is a type of air pollution made up of microscopic fragments of solids or liquids.

Dust is one possible type of these specks. Dirt. Soot. Particulate pollution can exacerbate acid rain while also altering weather patterns, causing drought, accelerating global warming, and causing the ocean to become more acidic.

Therefore, the correct option is a. primary pollutants from a stationary source.

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Use the F=ma triangle to determine the mass of an object accelerating at a rate of 10m/s2 due to a force of 60N that was applied to that object.

Answers

Answer:

6

Explanation:

For this question it just takes a little bit of simple algebra. F=MA is an equation that will pop up again if you continue with an interest in science. F=MA actually say force=mass(acceleration). Which then is changed for this problem to M=F/A.

60/10=6

how is the structure of a leaf optimized for photosynthesis

Answers

Answer:

- The upper epidermis of the leaf is transparent, allowing light to enter

- They have a large surface area to volume ratio, allowing more light to enter

The upper epidermis of the leaf is transparent, allowing light to enter and they have a large surface area to volume ratio, allowing more light to enter.

What is responsible for photosynthesis to occur?

The mesophyll cell is responsible for photosynthesis occurs. The majority of the chloroplasts and the primary site of photosynthesis are located in the palisade layer. The area of storage and gas exchange is the airy, spongy layer. The stomata control the water and carbon dioxide equilibrium.

For gaseous exchange and photosynthesis, leaves are suited. Since they have a wide surface area and stomata, which enable carbon dioxide to enter the leaf and oxygen to exit, they are well-equipped for photosynthesis.

Chloroplasts, which is known as the house the chlorophyll in plants, are where photosynthesis occurs. The thylakoid membrane, a third inner membrane that creates lengthy folds inside the chloroplast and is bordered by a double membrane, is present inside chloroplasts.

Therefore, The upper epidermis of the leaf is transparent, allowing light to enter and they have a large surface area to volume ratio, allowing more light to enter.

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How does a frog survive in water as well as on land?

Answers

An amphibian can live both on land and in water. ... Instead of drinking water, frogs soak the moisture into their body through their skin. Frogs breathe through their nostrils while also absorbing about half the air they need through their skin.

Hope this helps :) - sorry if I am wrong - if I am right can I get brainliest please??

16. Which organelle may have allowed early eukaryotes to make food and produce oxygen? (a) the Golgi apparatus (b) the central vacuole (c) the plastids

Answers

Answer:

the plastids

Explanation:

Answer:  

The plastids are the organelles that compose the cells of plants and algae. These contain chloroplasts, which allow them to capture energy from sunlight. If they are ever removed, these cells will eventually lose their ability to photosynthesize food without help from another organism - they have lost an essential organelle. Without the presence of this organelle, eukaryotes may not have been able to use sunlight as a mechanism for producing oxygen or making nutrients such as glucose available for consumption.

The organelle that may have allowed early eukaryotes to make food and produce oxygen is the plastid. The correct option is c.

What is plastid?

The organelles that make up the cells of plants and algae are called plastids. These have chloroplasts, which enable them to absorb solar energy. These frequently include several kinds of pigments that can alter the color of the cell as well as pigments that are employed in photosynthesis.

These cells will eventually lose their capacity to photosynthesize food without the assistance of another creature if they are ever taken out since they have lost an important organelle.

Eukaryotes might not have been able to exploit sunlight to produce oxygen or make nutrients like glucose available for consumption without the presence of this organelle.

Therefore, the correct option is (c) the plastids.

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movement of xylem sap from roots to leaves __________.

Answers

Answer:

trandpiration

Explanation:

(i think)


Humans can use starch as an energy source but are unable to use cellulose for energy. Which
of the following best explains the difference in how these molecules are processed in the body?
Humans can chew starch but cannot chew cellulose.
Humans dissolve starch in blood plasma but cannot dissolve cellulose
Humans make an enzyme to digest starch but cannot digest cellulose
Human muscle cells can absorb starch but cannot absorb cellulose

Answers

Answer:

human make enzymes to digest starch

HOW
TO
PROJECT: BUILDING DNA
The structure of DNA resembles a twisted ladder called a double helix. For this project, you will build a DNA molecule by
placing its basic parts together like pieces of a puzzle.

Answers

The structure of DNA resembles a twisted ladder because both strands are linked by hydrogen bonds.

What is DNA?

Deoxyribonucleic acid (DNA) is a double helix composed of two long chains of nucleotides linked by hydrogen bonds.

In DNA there exist only four different types of nucleotides (i.e., Guanine, Cytosine, Thymine and Adenine).

In conclusion, the structure of DNA resembles a twisted ladder because both strands are linked by hydrogen bonds.

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2) What are the primary functions of all the Organic Compounds/Macromolecules?

Answers

Answer:

enter in formation of the body

Explanation:

provide cells with energystore energyhelp from cell membrance

Receptors that are especially important for helping a person maintain balance are located in the (A) gyrus cinguli (B) inner ear (C) tendons (D) ossicles (E) ligaments

Answers

The receptors that aid in allowing a person to maintain balance are located within the inner ear.

The human ability to walk upright without falling, and a wide variety of other tasks that we perform as all thanks to our ability to maintain balance. This ability is given to us by structures located deep within the inner ear.

The inner ear is located deep within the lateral side of the head. This ear contains 3 semicircular canals or ducts, which are tiny structures filled with liquid. Each of these canals has an expansion at its end known as the ampulla, which holds within it the very small cellular balance receptors called crista.

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When a nerve impulse reaches the end of an axon of a neuromuscular junction, calcium flows ______ the synaptic knob.

Answers

Answer: flows INTO the synaptic knob.

When a nerve impulse reaches the end of an axon of a neuromuscular junction, calcium flows into the synaptic knob.

In a neuromuscular junction, there are three parts. They are the presynaptic terminal or synaptic knob, the synaptic cleft and the postsynaptic terminal. The calcium ions will work in the synaptic knob when the nerve impulse arrives.

Once that the nerve impulse reaches the end of the axon, it will affect the presynaptic terminal. In there, it causes the opening of voltage-gated calcium channels. As a result:

Calcium flows into the presynaptic terminal.The calcium makes the vesicles (with neurotransmitters) descend and fuse with the terminal membrane to release the neurotransmitters to the synaptic cleft.

In conclusion, the nerve impulse causes the opening of voltage-gated calcium channels, and calcium flows into the synaptic knob.

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Special proteins that bind to enzymes during the cell cycle are called
a.CDK
b.Growth promoting factor
c.Cyclin
d.checkpoint

Answers

Answer:

cyclins and cyclin-dependent kinases (Cdks), are

Explanation:

I'm sorry if I'm wrong! :{

NEED URGENT HELP!

A. What are three things that can create microclimates?

B. What characteristics of these things help create a microclimate?

Answers

Topography (height), large bodies of water and urban areas can create microclimates

in a hot place, if theres a mountain there, the top of the mountain can be cold

cement in an urban area can absorb a lot of heat during the day and then release it at night

valleys can have cold air

A(n) is a protein and/or sugar molecule on the surface of a cell that allows the immune system to identify whether or not that cell poses a threat.

Answers

Answer:

Antigen

Explanation:

which molecule is most likely to diffuse through a cell membrane without the use of energy?

Answers

i believe the answer is water

"Tall" "purple" and "wrinkled" are examples of?

Answers

Phenotype if genetics is the area

Tall purple and wrinkled are the examples of Phenotypes.

What are phenotypes?

The phenotype is the set of observable characteristics or traits of an organism. The term covers the organism's morphology or physical form and structure, its developmental processes, its biochemical and physiological properties, its behavior, and the products of behavior.

Moreover, the observable characteristics in an individual resulting from the expression of genes; the clinical presentation of an individual with a particular genotype.

Therefore, phenotype examples include earwax type, height, blood type, eye color, freckles, and hair color.

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What evidence of climate change on continents supports the theory of continental drift?

signs that glaciers existed in South Africa
similar coal fields on different continents
change in atmospheric temperature over time
same animal fossils found on different continents

Answers

Answer:

A

Explanation:

Edge2022

The evidence of climate change on continents that supports the theory of continental drift is similar coal fields on different continents. Hence option B is correct.

What is continental drift theory?

The theory of continental drift suggests that the Earth's continents were once joined together in a single landmass called Pangaea, which began to break apart around 200 million years ago.

This idea was first proposed by German scientist Alfred Wegener in the early 20th century, who noticed the striking similarities between the coastlines of Africa and South America.

Coal is formed from the remains of plants that lived millions of years ago, and its distribution can provide clues about how continents were once connected.

Coal fields found on different continents that match in age and composition indicate that the continents were once joined together in a larger landmass.

This supports the theory of continental drift, which states that the continents were once part of a single supercontinent that later broke apart and drifted into their present positions.

This evidence suggests that coal-forming swamps once existed in locations that are now separated by oceans and that these locations were once connected.

Hence option B similar coal fields on different continents is correct.

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where are your adrenal glands located in your body

Answers

on top of both kidneys !

what is vascular tissue​

Answers

what is vascular tissue??

plant tissue concerned mainly with conduction especially : the specialized tissue of higher plants consisting essentially of phloem and xylem.

hope it helps

when was the last time that you had your vital signs taken ?how was the result?​

Answers

Answer:

Normal vital sign ranges for the average healthy adult while resting are: Blood pressure: 90/60 mm Hg to 120/80 mm Hg. Breathing: 12 to 18 breaths per minute. Pulse: 60 to 100 beats per minute.Vital signs are measurements of the body's most basic functions. The 4 main vital signs routinely checked by healthcare providers include: Body temperature. Pulse rate.Checking vital signs is an important skill to learn, because it tells us how the person's body is functioning, helping us to monitor current conditions and alerting us to changes in health status. It can also give us clues to possible medical conditions that have yet to be diagnosed.

Does surface area increase permeability of membrane

Answers

Answer:

The magnitude of the concentration gradient depends on the membrane permeability. The concentration gradient changes the available surface area. It is suggested that a high-permeability compound is absorbed mainly from the top of the villi, while a low-permeability

Explanation:

PLEASE HELP FAST
LOTS OF POINTS
BEST ANSWER WILL BE MARKED BRAINLIEST!!!!! Thank you!!

The energy released from the complete oxidation of glucose under standard conditions is 686 kcal/mol. The energy
released from the hydrolysis of ATP to ADP and inorganic phosphate under standard conditions is 7.3 kcal/mol.
Using the equation for cellular respiration from question 1, calculate the efficiency of total ATP production from 1
mole of glucose in the organism.

Answers

The energy is 8 so this would be correct answer
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