why is mechanical digestion of food important?? please help I only need one reason marking brainliest btw

Answers

Answer 1

Answer:

it makes the food smaller

Explanation:

Mechanical digestion is a purely physical process that does not change the chemical nature of the food. Instead, it makes the food smaller to increase both surface area and mobility. It includes mastication, or chewing, as well as tongue movements that help break food into smaller bits and mix food with saliva.


Related Questions

The main sugar that photosynthesis produces is help me please ;(

Answers

Answer:

The answer is Glucose.

Hope that helps. x

Explanation:

During the process of photosynthesis, cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen. These sugar molecules are the basis for more complex molecules made by the photosynthetic cell, such as glucose.

If a deletion occurs in a gene that encodes DNA polymerase I and no functional DNA polymerase I is produced, what will be the MOST likely consequence of this mutation

Answers

5’—>3’ DNA polymerase
3’—>5’ exonuclease : DNA repair
5‘—>3’ exonuclease : primer removing
All of the functions mentioned above may disable.

What is needed for natural selection to occur? select all that apply.

Answers

reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population.

Write the function of nucleus in the cells of organism​

Answers

Answer:

The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. Nucleoli are small bodies often seen within the nucleus.

Explanation:

HOPE IT HELPS...............

What is Darwin's theory called?
Describe the basic ideas behind his theory.

Answers

[tex] \large \text{Answer} \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ [/tex]

Darwinism, theory of the evolutionary mechanism propounded by Charles Darwin as an explanation of organic change. It denotes Darwin's specific view that evolution is driven mainly by natural selection.

Polysaccharides, triglycerides, and proteins are similar in that they?
a) all contain nitrogen in other monomer building blocks
b) are decomposed into their subunits by dehydration reactions
c) are synthesized from subunits by dehydration reactions
d) are synthesized from monomers by the process of hydrolysis

Answers

Answer:

d

Explanation:

po ang tamang sagon po

Is scientific law a proven concept? Explain why or why not.​

Answers

n general, a scientific law is the description of an observed phenomenon. It doesn't explain why the phenomenon exists or what causes it. The explanation of a phenomenon is called a scientific theory. It is a misconception that theories turn into laws with enough research.

How do organisms remain highly organized in spite of the tendency toward entropy

Answers

Answer:Energy stored by organisms in organic molecules

Explanation:

One gene in the human genome may be expressed at a much higher level than another. Can differences in types of cis elements present account for this

Answers

Answer:

No, CREs usually don't account for differences in gene expression levels.

Explanation:

Cis-regulatory elements (CREs) are non-coding DNA regions that regulate adjacent gene transcription. They usually do it by binding to transcription factors. They are in charge of influencing the rate of which transcription occurs, and less with how much a gene is expressed. On the other hand, trans-regulatory elements are DNA sequences that encode for upstream regulators that can modify or regulate gene expression levels.

Therefore, cis elements are not really in charge of expression levels, mostly transcription rates of single genes, rather. Trans elements are more involved in expression levels.

In sexual reproduction, will an offspring show a recessive trait if just one of its parents has recessive alleles for that trait? Explain your answer.

Answers

Answer:

No, they will not

Explanation:

In this question, we assume that the parents have genotypes of rr and RR (I use "r" out of convenience). If we cross both of these parents, it is impossible for any of the offspring to be rr like the one parent. They would all be heterozygous. If the other parent had a single recessive allele, then it would be possible.  

Hope this helps!

3. The organelle that releases large amounts of energy to assist active transport in cells ?​

Answers

Answer:

The main function of the mitochondria is to provide energy for cellular activity by the process of aerobic respiration.

Explanation:

glucose is broken down in the cell's cytoplasm to form pyruvic acid, which is transported into the mitochondrion

a movement away from the midline of the body is termed

Answers

Answer:

A movement of a body part away from the midline, either of the body as a whole or that of the hand or foot, is termed abduction (L., to carry away). A movement of the body part back toward the midline (i.e., to the anatomical position) is known as adduction.

Explanation:

Mark me brainly please.

Abduction is a movement away from the body's midline. Abduction is the term for a bodily part's lateral movement away from the body's midline.

Thus, body parts are divided or spread apart in this process. Abduction of the arms, for instance, occurs when you raise your arms from a resting posture and spread them out to the sides. Similar to this, you are practicing leg abduction when you stretch your legs apart.

Adduction, or the movement in the direction of the midline, is the reverse of this action. Important terminology like abduction and adduction are used to describe movement in respect to the body's midline in anatomical and physiological descriptions.

Learn more about the abduction here:

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The movement of water dissolved minerals , and food and other organic molecules in a plant is called

Answers

Xylem is the correct answer.

the ventral rami of spinal nerves ________ form the major nerve plexuses.

Answers

Answer:

The blank is:

C1 through T1 and L1 through S4

Hope this Helps

the organ of smell and taste are closely related discuss?

Answers

Answer:

They are closely related because the bose and mouth are connexted through the same airway. You taste and smell at the same time.

Which of the following is (are) part of a systemic immune response?
I. A fever
II. An increase in white blood cells in the body
III. An inflammatory response
I only
II only
III only
I and II only
I, II, and III

Answers

Answer:

The answer is I ,II and III

In adolescent years, a person's sense of identity

A. Is still being developed.

B. has already been fully developed.

C. changes on a regular basis

D. is determined by his or her culture.

E. Other:

Answers

A. I think answer correct.

4. What would have the most biodiversity, a rainforest with lots of different
animals and plants or a crop of green beans?

Answers

Answer:

A rainforest with lots of different  animals and plants.

Explanation:

bioDIVERSITY

Diversity: a range of different things.

what type of ions carry the impulse across the synapse from one neuron to the next ?

Answers

It's the sodium ion.

When a neural impulse is fired in both neurons, it is always cause by an excited electron in one neuron moving to the other neuron to destabilize the balance of ions trying to keep them at equilibrium. This action either depolarizes or hyper-polarizes the membrane. If it does, then sodium ions--the key deficient ones--can flow into that region of low charge and maintain that state of low charge, keeping the cell membrane stable.

Put the following in order of complexity from least to most complex and explain your answers
virus, eukaryote, prokaryote.

Answers

Answer:

The main components of prokaryotic cells that we'll discuss are the cell membrane and cell wall, the propulsion mechanism, ribosomes, and DNA. Bacteria have a cell wall that surrounds the cell membrane. Eukaryotic cells, on the other hand, have only a cell

Explanation:

hope this helps I don't know Its correct answer

Which statement is supported by the atomic theory? A. Atoms combine to make all the substances on earth

Answers

Answer:

this is not true.

B) atoms of all substances are identical in all respects..

Dalton's theory said - all atoms of one substance are identical.  Atoms of different elements differ.

Explanation:

The answer will be b

How to treat Scalp acne?

Answers

Answer:

1. Treat acne on the head with benzoyl peroxide

2. Use salicylic acid to clear pores

3. Use AHA to treat acne on the head

4. Cleanse the scalp with sulfur

5. Use a retinoid to apply to acne spots

Explanation:

In an experiment that compares a combination mental-physical practice condition to an all-mental practice condition, an all-physical practice condition, and a no practice condition, the typical results show that participants in the combination mental-physical practice condition would learn the skill

a. as well as or better than those in the all-physical practice condition.
b. about as well as those in the all-mental practice condition.
c. about as well as those in the no practice condition.
d. The results would depend on the combination of the amount of mental and physical practice.

Answers

The combination mental-physical practice condition is effective to learn the skill as well as or better than those in the all-physical practice condition. Mental-physical practice enhances both cognitive and physical skills.

Mental practice, also known as mental/skill rehearsal, refers to the cognitive (i.e., thinking) rehearsal of a given skill prior to its execution.

It has been shown that mental practice can be effective for enhancing the performance of both cognitive and physical skills.

The mental-physical practice has been shown to be helpful to enhance self-motivation, confidence, and reduce feelings of anxiety.

Mental practices always must be employed to supplement physical practices instead of replacing such physical exercises.

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For the cross AaBb X Aabb in which capital letters represent dominant alleles and lower case letters represent recessive alleles, what fraction of the offspring are expected to have the recessive phenotype for the trait determined by gene A and the dominant phenotype for the trait determined by gene B?

Answers

Answer:

2/16 or 1/8 (simplified)

Explanation:

Check the image attached

The effects of this type of severe weather can include tress blown over by high winds, flooding caused by heavy rains, and damage to coastal areas caused by storm waves. What type of severe weather does this describe?
A. tornado
B. thunderstorm
C. blizzard
D. hurricane

Answers

The answer is: B - thunderstorm.

Answer:

thunderstorm

Explanation:

A(n) _____ is a type of cancer-causing gene that promotes cancer by activating cell division at an inappropriate time or place.

Answers

This bad gene is called oncogene

a neuron that synapses in the adrenal medulla is a ___________ neuron, and releases the neurotransmitter ___________.

Answers

Answer:

preganglionic; acetylcholine (ACh)

Explanation:

What is the potential energy of a 10-kg book that is placed on a shelf that is 2.5 meters high?

Answers

ANSWER:

The potential energy of the book is 245 J.

SOLUTION:

We are given the following:

mass m = 10 kgheight above a reference point h = 2.5 m

Use the formula for potential energy. ( g = 9.8 m/s² )

[tex] \qquad {\boxed{\sf P.E._{grav} = m \times g \times h}} [/tex]

[tex] \sf P.E._{grav} = (10\:kg) \times (9.8\: \frac{m}{s^2}) \times (2.5\:m) [/tex][tex] \sf P.E._{grav} = (10\:kg) \times (24.5\: \frac{m^2}{s^2}) [/tex][tex] \sf P.E._{grav} = {\boxed{\sf {245\:J}}} [/tex]

Therefore, the potential energy of the book is 245 J.

HOPE IT HELPS!

(LO 1.6) Assume a person just drank a glucose solution and is sitting quietly.
Injecting insulin would cause compared to when there was no insulin
injected.
m

Answers

Answer:

more glucose to move into cells in muscles

Explanation:

which division of the autonomic nervous system is responsible for conserving energy and replenishing nutrient stores?

Answers

Answer:

parasympathetic division

Explanation:

The parasympathetic system functions during rest of the somatic system and is responsible for anabolism and restoration of energy stores.

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