What can a paleontologist learn from fossils

Answers

Answer 1
They can learn bout their past and how evolution came to be and the size, weight, and details of when the fossil was alive

Related Questions

Is the cell membrane of a cell with high mass or the cell membrane of a cell with low mass better able to feed the cytoplasm of the cell key?

Answers

Cells are everywhere. Even though most cells can’t be seen with the naked eye, they make up every living thing. Your body alone contains trillions of cells.

The cell membrane of a cell with high mass is better able to feed the cytoplasm of the cell key.

The ability of a cell membrane to facilitate the transport of nutrients into the cytoplasm is not directly related to the mass of the cell but rather to the properties of the cell membrane itself, such as its permeability, the presence of transport proteins, and the surface area-to-volume ratio.

For a cell with high mass, it typically has a larger surface area, which means more cell membrane is available for the diffusion of nutrients and exchange with the environment.

This larger surface area relative to the volume of the cell allows for more efficient transport of substances in and out of the cell. In contrast, as cells grow larger, if their surface area does not increase proportionally, they may face challenges in transporting enough nutrients to support their volume, leading to a lower surface area-to-volume ratio.

However, cells with high mass often have specialized structures such as infoldings or extensions of the cell membrane (like microvilli in intestinal cells), or they may employ active transport mechanisms to move nutrients against a concentration gradient, ensuring that the cytoplasm is adequately nourished.

In summary, while the mass of a cell does not directly determine the efficiency of nutrient transport, cells with high mass typically have adaptations that allow their cell membranes to effectively feed the cytoplasm. These adaptations can include an increased surface area, specialized membrane structures, and active transport mechanisms.

​fertility usually resumes within _____ after contraceptive use stops.

Answers

Fertility usually resumes within 10 DAYS after contraceptive use stops.
Birth control is an important measure to stop fertility or risk of getting pregnant. There are various methods of contraceptions that can be used as birth control. After stopping contraception method such as oral contraceptive pills, etc the normal menstruation cycle should resume after 10 days and thus fertility is also resumed.

Both cystic fibrosis and chronic bronchitis cause cells of the respiratory system to hypersecrete mucus. the excessive mucus makes gas exchange more difficult and allows bacteria to thrive, often causing secondary infections. what type(s) of cells in the lungs are responsible for extra mucus production?

Answers

Answer: Goblet cells

There are two main areas in the lungs that secrete mucus. From the trachea to the major bronchi ciliated cells and goblet cells are present in the epithelium cells. The surface of the epithelium cells are coated by a mucus layer of viscos elastic gel which acts as a protective barrier and is mobilized by ciliary movement. Mucins are secreted by goblin cells are a major component of the mucus. Mucus is composed of water carbohydrates proteins and lipids

Cystic fibrosis and chronic bronchitis both are a chronic obstructive pulmonary disease. These disorders are characterized by increasing breathlessness Goblet cells in the lungs are responsible for the extra production of mucus. It plays an essential role in the protection of the mucous membrane.

Further Explanation:

Goblet cells lie in the epithelium lining of the airways that conducts respiration. The vital function of cell is to produce mucus which provides protection to the epithelium by covering it with gel like substance. The mucus produced by these cells is comprises from mucin and inorganic salt. Mucins are the glycosylated protein. They are found in the electrolyte solution.

Mucus is secreted by irritating stimuli which is produced by exocytoses process and helps in the determination of the efficiency of entrapment and transportation of inhaled irritants, particles as well as microorganisms. Mucin is found in the intracellular granules of the goblet cells.

Goblet cells secrete mucus in response to several stimuli such as proteinases, irritant gases, inflammatory mediators, and reactive oxygen species.

In normal conditions, the goblet cells tend to proliferate and differentiate into ciliated cells and help in the maintenance of airway epithelial cell population. T cell mediated immunity is also modifies by goblet cell secretion.

Learn More:

Learn more about effects of vigorous exercise on cardiorespiratory system https://brainly.com/question/1209683 Learn more about the structure of epithelium and connective tissue https://brainly.com/question/4557690 Learn more about secondary function of the lymphatic system https://brainly.com/question/2909254

Answer Details:

Grade: Senior School

Subject: Biology

Chapter: Respiration and breathing disorders

Keywords:  

Lungs, respiration, goblet cells, ciliated cells, oxygen, carbon dioxide, stimuli, mucus, epithelial cells, gglycosylated, electrolyte, exocytoses, immunity.

What part of a neuron receives signals and sends a message to the cell body? what part of a neuron receives signals and sends a message to the cell body? axon terminal axon dendrite axon hillock?

Answers

In a neuron, the dendrite is the part that receives the signal and sends the message to the cell body. The signal may come from a sensory receptor or from the axon of another neuron or set of neurons.

The absence of which organelle would limit the energy production in an animal cell

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Mitochondria--ATP energy. The mitochondria is analogical to the heart, and creates energy.

What is osmosis and how is osmosis different from diffusion? if ion transport requires atp, what type of transport is that and give an example?

Answers

Osmosis means the net movement of water molecules from a region of higher water potential to a region of lower water potential, through a partially permeable membrane.
Osmosis is different to diffusion as osmosis is only about the movement of water molecules, while diffusion can be the movement of any dissolved substances. Including gas or liquid.
If a transport requires atp, a type of energy, its active transport. Only active transport requires extra energy.
Another example of active transport includes the absorption of nutrients in small intestine.

Which organelle often takes up much of the volume of a plant cell

Answers

The answer you are looking for is the Vacuole. :)
Final answer:

The central vacuole is the organelle that often takes up the majority of the volume in a plant cell. It serves several functions such as storing water, disposing waste, and aiding in cellular growth.

Explanation:

The organelle that often takes up much of the volume of a plant cell is the central vacuole. In a plant cell, the central vacuole serves multiple functions, most notably, it stores water and helps the plant maintain its shape. During periods of drought, this vacuole can help the plant survive by preserving water within its cell walls. It's also involved in waste disposal, storage of nutrients and molecules, and cellular growth. The central vacuole can occupy up to 80% of the volume of some plant cells, making it the largest organelle in these cells.

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Which immune cells normally reside in the tissue?
a. natural killer cells
b. dendritic cells*
c. macrophages
d. neutrophils?

Answers

Macrophages as they are versatile cells which reside in the tissue

Which of these substances is an enzyme: oxidase triglyceride nucleotide omega-3 fatty acid glucose?

Answers

oxidase

due to the -ase

What steps might a scientist take when he or she tests a hypothesis

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These are the 4 steps that scientists might take when he or she tests a hypothesis

1. They would design an experiment to prove their hypothesis
2.They would draw or make a picture or model
3.Then they would gather evidence from what they know
4.Then they would collect the data 

Biology what is the difference between artificial selection and natural selection? artificial selection acts on morphological characteristics, whereas natural selection acts on life history traits. artificial selection is directional, whereas natural selection is stabilizing. artificial selection requires human intervention, whereas natural selection does not require human intervention. artificial selection operates at the genetic level, whereas natural selection operates on the whole organism. artificial selection leads to temporary changes, whereas natural selection leads to permanent changes.

Answers

Final answer:

Artificial selection involves human intervention to select for desirable traits in organisms, often used in domestication and agriculture, while natural selection is the process by which the environment selects for traits that improve survival and reproduction, leading to adaptive evolution.

Explanation:

The difference between artificial selection and natural selection lies in the mechanisms that drive the evolution of species. Artificial selection is when humans intervene and select which individuals breed based on desirable traits. This practice is common in agriculture and the domestication of animals, where farmers or breeders select plants and animals to pass specific traits to the next generation. An example is the breeding of cows that produce more milk. On the other hand, natural selection is a process where the environment naturally determines which individuals are more suited to survive and reproduce. Traits that confer an advantage increase in frequency within a population, while disadvantageous traits are selected against, a process called adaptive evolution. Charles Darwin realized that artificial selection was a significant clue to understanding natural evolution, as they both lead to populations that are better adapted over time.

According to the climate zone map, a desert may be either hot or cold, but is always characterized by dry conditions. true or false

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True. There is not much moisture in the air, whether it be cold or hot.
True because the overall climate is hot.

When individual cellular slime mold amoebas are stressed (like near starvation), all the individuals in that immediate area aggregate into a large moving mass of cells called a:?

Answers

The term used when all individuals in an immediate area aggregate into a large moving mass of cells is called a slug. This is often present in aggregation as this is a way of having to increase its chance of having to provide and find food.

The neighboring immediate cells aggregate into a mass of cells when bacterial food is exhausted and it is called a slug. By aggregating into a mass of cells and constantly moving its location, it will improve the chance of finding food. 

Temporal summation most likely occurs with:

Answers

Rapid succession of sub threshold excitation

what is the difference between a cell wall and a cell membrane

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The cell wall is the outside layer of the cell whereas the cell membrane is surrounds the cytoplasm of the cell.
Here is your answer:

A cell wall protects the cell from any viruses or diseases from getting into the cell and contamination (or getting the cell sick).

The cell membrane controls the cell tells it what to do basically how are brain tells are body what to do the cell membrane tells the cell what to do.

The sensory registers ______.
a. are measures of retention
b. retain past information
c. control our attention span x
d. receive sensory information from the external world

Answers

The sensory registers RECEIVED INFORMATION FROM THE EXTERNAL WORLD.
The sensory registers takes information from all the five sense organs and hold the information only for a few seconds, maximum of twenty seconds. Sensory register is the most intermediate form of memory which one have and it is the shortest form of memory.

A __________ would be more likely to have well-developed slow twitch muscle fibers, while a ____________ would be more likely to have fast twitch muscle fibers.
A. marathon runner; weight lifter
B. weight lifter; gymnast
C. gymnast; long-distance swimmer
D. long-distance swimmer; marathon runner

Answers

A marathon runner would be more likely to have well-developed slow twitch muscle fibers, while a weight lifter would be more likely to have fast twitch muscle fibers. So, the correct option is A.

What are fast and slow twitch muscle fibers?

Skeletal muscle consists of two different types of muscle fibers: fast and slow twitch. The contraction speed and endurance of fast and slow smooth muscle fibers differ from each other. Fast twitch fibers are employed for short, strong bursts of exercise such as weightlifting or sprinting, but they tire easily.

Slow-twitch fibers are useful for endurance sports such as long-distance running and cycling because they can sustain contraction for extended periods of time while contracting more slowly and with less force. The ratio of fast and slow twitch muscle fibers can affect a person's athletic performance in many sports.

Therefore, the correct option is A.

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Final answer:

The correct answer is A. marathon runner; weight lifter, with marathon runners having more slow twitch fibers for endurance and weight lifters having more fast twitch fibers for strength.

Explanation:

A marathon runner would be more likely to have well-developed slow twitch muscle fibers, while a weight lifter would be more likely to have fast twitch muscle fibers. The correct answer to the question is A. marathon runner; weight lifter.

Slow twitch muscle fibers are more efficient at using oxygen to generate more fuel for continuous, extended muscle contractions over a long time. They are abundant in marathon runners, who participate in endurance sports, because these fibers help sustain aerobic activity and increase endurance.

Fast twitch muscle fibers, on the other hand, are better at generating short bursts of strength or speed than slow twitch fibers but fatigue more quickly. Weight lifters rely on these fibers to perform movements that require power and strength, such as lifting heavy weights. Evidence suggests that athletes involved in power activities like weight lifting have a higher proportion of fast twitch fibers.

The visible spectrum of light that humans see is merely a narrow portion of the larger spectrum of electromagnetic radiation. True or False

Answers

if this is a true or false, it is true.

Answer;

The above statement is true

The visible spectrum of light that humans see is merely a narrow portion of the larger spectrum of electromagnetic radiation.

Explanation;

The electromagnetic spectrum is a continuum of all electromagnetic waves arranged according to frequency and wavelength. The sun, earth, and other bodies radiate electromagnetic energy of varying wavelengths. Electromagnetic energy passes through space at the speed of light in the form of sinusoidal waves.

The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye. Electromagnetic radiation in this range of wavelengths is called visible light or simply light.

What type of cell did Hooke study?

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Robert Hooke used the term cells to describe units in plant tissue (thick cell wallscould be observed). Of course he saw only cell walls because cork cells are dead and without protoplasm. He drew the cells he saw and also coined the word cell.

Robert Hooke studied thin slices of cork and described the microscopic, box-like structures he observed as 'cells,' a term he introduced in 1665 in his publication 'Micrographia.'

In 1665, Robert Hooke became the first cytologist to discover and describe cells. Using a microscope to examine thin slices of cork, Hooke observed and sketched structures that resembled a honeycomb pattern, which consisted of repeated circular or square units.

He coined the term 'cell' for these structures as they reminded him of the small rooms, or 'cells,' that monks inhabited. The name 'cell' was derived from the Latin term cella, meaning 'small room.' This ground-breaking observation was documented in his notable publication, Micrographia.

Hooke's work laid the foundation for the field of cell biology as we know it. His illustration of cork cells as they appeared under his simple light microscope was a pioneering contribution to the understanding of plant cells and the structure of living organisms.

Where in the cell are photosynthetic pigments that are not found in the chloroplasts located?

Answers

Answer:

Explanation:

Chloroplast, structure within the cells of plants and green algae that is the site of photosynthesis, the process by which light energy is converted to chemical energy, resulting in the production of oxygen and energy-rich organic compounds. Photosynthetic cyanobacteria are free-living close relatives of chloroplasts; endosymbiotic theory posits that chloroplasts and mitochondria (energy-producing organelles in eukaryotic cells) are descended from such organisms.

What do you call the phenomenon when you have a different concentration of materials on the inside and the outside of the cell?

Answers

This is a concentration gradient. These different levels of a substance between the cell and its environment allow for (facilitated) diffusion and osmosis to occur. The different types of movement are based upon what the substances are on the two sides of the cell. Facilitated diffusion and basic diffusion are based upon non-water substances moving across the gradient while osmosis is the movement of water into and outside the cell.

Which of the raw materials used in photosynthesis has been linked to global warming?

A. water

B. oxygen

C. carbon dioxide

D. sugar

Answers

c. carbon dioxide has been linked to global warming

Answer: Carbon dioxide

Explanation: The carbon dioxide can be defined as one of the raw materials that is the main contributor of the global warming.

The carbon dioxide absorbs the heat present in the environment that helps to maintain an optimum temperature on earth for survival.

This carbon dioxide is also used by the plants along with water and sunlight to perform the process of photosynthesis.

Personal characteristics and skills are fundamental in orm, how do they support the tcrm process?

Answers

Final answer:

Personal characteristics and skills are integral to the Total Customer Relationship Management (TCRM) process. They enhance customer engagement and service, especially when matched properly to job roles through Candidate Analysis and Testing. This includes personality, IQ, integrity, and physical tests.

Explanation:

Personal characteristics and skills play a crucial role in Total Customer Relationship Management (TCRM) process. TCRM focuses on understanding customer needs and preferences to offer utmost satisfaction. Personal attributes such as empathetic understanding, problem-solving skills, and excellent communication can greatly enhance this process.

Candidate Analysis and Testing is a vital component of this. Candidates for customer relationship roles are evaluated based on their knowledge, skills, and other abilities. Personality tests are often used to identify the personality characteristics that would best fit the job. For instance, a high rating of agreeableness might improve performance in a customer support position. Nevertheless, the correlation between personality characteristics and job performance predictions isn't always straightforward. Thus, using personality tests should always be paired with verified assessments that pinpoint which test scores correlate with good performance.

Other tests like IQ tests, integrity tests, and physical tests (drug tests or physical fitness tests) may be given to candidates to ensure they meet all job requirements. In conclusion, personal characteristics and skills significantly support the TCRM process by facilitating more effective customer engagement and service.

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Is rice pudding a homogeneous or heterogeneous mixture?

Answers

Rice pudding would be an example of a heterogeneous mixture. A heterogeneous mixture means that different constituents of a mixture can be identified. Rice pudding consists of rice suspended in a cream. It is possible to identify the grains of rice and the creamy part of the mixture. A homogeneous mixture looks the same throughout--you cannot identify individual parts or ingredients. The parts of a homogeneous mixture are said to be uniformly distributed. Rainwater and air are examples of homogeneous mixtures.

During the water cycle, water evaporates from plants through a process called transpiration. which of these is a similar process during the carbon cycle?

Answers

evaporation is the correct option

Most scientific questions are based on

Answers

Most scientific questions are based on observations.

How does the brain skeleton and heart work together

Answers

Well, the brain sends electronic impulses to the heart that not only make it beat, but help it beat in a rhythm. That way you can pump blood throughout the body efficiently and provide all the body parts with oxygen
Well, the brain sends electronic impulses to the heart that not only make it beat, but help it beat in a rhythm. 

What did rutherford gold foil experiment suggest about the structure of an atom?

Answers

 He demonstrated that the atom has a tiny, massive nucleus. ... Some alpha particles were deflected slightly, suggesting interactions with other positively charged particles within the atom

Which of the following are NOT common invertebrates with exoskeletons?

A) Anemone
B) Crustaceans
C) Insects
D) Spiders

Answers

Final answer:

From the given options, anemones (A) are the organisms that do not commonly have exoskeletons. Crustaceans, insects, and spiders are all invertebrates known for having exoskeletons.

Explanation:

The question asks us to identify which of the listed organisms do not commonly have exoskeletons. An exoskeleton is a hard covering or shell that provides benefits to the animal, such as protection from predators and water loss, and attachment points for muscles. This characteristic is often found in various invertebrates, notably within the group named arthropods, which includes insects, spiders, scorpions, horseshoe crabs, centipedes, and crustaceans. After reviewing the options given:

B) Crustaceans - They are known to have exoskeletons.C) Insects - This group is well-known for its exoskeletons.D) Spiders - As arachnids, they also possess an exoskeleton.A) Anemone - Anemones are cnidarians, not arthropods, and they do not have an exoskeleton. Instead, they may have a simple hydrostatic skeleton or no skeleton at all.

Given the information, the correct answer is A) Anemone, which is the organism not commonly associated with an exoskeleton.

The acacia tree provides a habitat and protection for ants. This is considered its _____.

biome
ecological niche
ecosystem
biotic factor

Answers

ecological niche is the answer

Answer: ecological niche

Explanation:

An ecological niche can be define as the functional role that an organism plays in an ecosystem during the coarse of it's life. Like, the type of food chosen for eating, type of habitat chosen, season for breeding, predator- prey relationship, harm and benefit it provides to other species and others.

The acacia tree provides a habitat and protection to the ants these are the functional roles the acacia tree plays in an ecosystem. Therefore, this defines the ecological niche of the acacia tree in an ecosystem.

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