Answer:
Mouth: The process of food breakdown first begins in the mouth. The tooth, tongue and jaw apply this process with a mechanical activity. While teeth provide mechanical digestion of food, saliva chemically digests food.
YUtta and esophagus): The tongue pushes the food towards the esophagus. Meanwhile, the trachea is covered with a laryngeal lid. When swallowed food reaches the esophagus, the esophagus contracts peristaltic movements, allowing the food to move towards the stomach.
Stomach: The stomach is an organ that stores food, breaks it down mechanically and secretes enzymes to digest proteins. The secretion of gastric juice is provided by the gastrin hormone. The stomach is an acidic environment. This acid kills bacteria in food and converts proteins into amino acids in enzymes in the stomach. Ultimately, a mixture of partially digested nutrients called chyme is obtained. This mixture is sprayed into the small intestine. Vitamin B12 is a vitamin that is released from the stomach.
Suppose a researcher successfully produced a membrane composed of saturated triglycerides rather than from phospholipids. What characteristics would you expect the saturated triglyceride membrane to have?
A. hydrophilic molecules would easily pass through the membrane.
B. hydrophobic molecules would be attracted to the membrane.
C. the membrane would be fluid at room temperature
D. the saturated triglycerides would not form a bilayer.
Answer:
B. hydrophobic molecules would be attracted to the membrane.
D. the saturated triglycerides would not form a bilayer.
Explanation:
Triglycerides are molecules composed of a higher proportion of saturated fatty acid chains where carbons are connected by single bonds. Triglycerides are hydrophobes, i.e., they are nonpolar hydrophobic molecules. In this case, it is expected that hydrophobic molecules, including triglycerides, would be attracted through hydrophobic interactions (between water and hydrophobes). Triglycerides contribute to maintain the structure of the cell membranes by forming a lipid bilayer. Unlike phospholipids, triglycerides lack a polar group (phospholipids contain charged phosphate groups), and therefore triglycerides are unable to orient themselves in order to form a bilayer.
1. List seven potential environmental impacts
of mining.
Answer:
Pollution
Destruction of Land
Subsidence
Noise
Impact on the Biological Environment
Energy
Long-term Supplies of Mineral Resources
Explanation:
Which types of energy would fall under the form of Kinetic Energy? Mark all that
apply.
Thermal Energy
Nuclear Energy
Electromagnetic Energy
Mechanical Energy
Chemical Energy
(a) Which two cell components are copied before the muscle cells start to divide?
Answer:
DNA is copied in a process called DNA replication
Explanation:
This results in two identical chromosomes instead of just one.
I NEED HELP PLZ ITS DUE TODAY. The sun produces a great amount of energy with sound and lights. We enjoy the sun's light and heat waves on Earth, but cannot hear any sound of the sun. Explain this phenomenon in terms of mechanical waves and electromagnetic waves. (10 Points)
Answer:
See explanation
Explanation:
First of all, we have to know the difference between a mechanical wave and an electromagnetic wave.
A mechanical wave requires a material medium for propagation. It does not travel through space. An electromagnetic wave does not require a material medium for propagation and it can travel through space.
Light and heat are electromagnetic waves. They both belong to the electromagnetic spectrum. On the other hand, sound is a mechanical wave.
While heat and light can travel through space, sound can not because it is a mechanical wave. Sound has to pass through gas molecules and there is no gas in outer space.
Hence, we enjoy the sun's light and heat waves on Earth, but cannot hear any sound of the sun.
What might happen if the
order of expression of the
highlighted Hox gene was
disrupted, moved, or changed by mutation?
If the order of expression of the highlighted Hox gene was disrupted, moved, or changed by mutation, it would cause the replacement of a part of the body by a structure whose normal location would correspond to another site.
The differentiation of the limbs occurs during embryogenesis, thanks to the action of a group of specialized genes, called Hox gene.
This gene is involved in the developmental program that determines the location of organs along the anteroposterior axis.
These subdivide the embryo along the head-tail axis into cell fields with different developmental potentials, which will transform into limbs and other structures.
Hox gene mutations thus show that there are genes that can control the different regions of the genome that determine the structures of an organism.
These produce considerable anatomical transformations that, in the case of the fly, can consist of:
The formation of wings instead of halteres or legs.An extra pair of wings where small appendages called stabilizers would normally be.Therefore, we can conclude that if the order of expression of the Hox gene was disrupted, moved, or changed by mutation, it would cause the structures normally found in one body segment of the fly to be replaced by found in another segment.
Learn more here: https://brainly.com/question/15766388
Which is a property of facilitated diffusion?
It is commonly stated that 'plants produce oxygen during the day and carbon dioxide at night'. Explain fully the limits of this statement.
Answer:
Yes, the statement is correct. Plants respire throughout the day, while photosynthesis takes place only in the presence of sunlight. ... At night, when there is no photosynthesis, no oxygen is released. Also, CO2 produced during respiration is not used by the plants.
12 Which direction does blood flow in arteries?
Answer:
Like all fluids, blood flows from a high pressure area to a region with lower pressure.
Good luck!
Answer:
The arteries carry blood out of the heart and the veins carry it in. The flow of blood through the vessels and chambers of the heart is controlled by valves.
6. Two big lipped parents have two small lipped children. What are the
genotypes of all four family members?
Please help!!
Mutations can be helpful, harmful, or neutral.
True
False
Answer:
true
Explanation:
When the Volume of Liquid was 60 mL what was its mass?
Answer:
60 grams or 0.060000 kg
Explanation:
Plzzz help me plz I am timed plzzz
Answer:
Your answer is A) X: Producers undergo photosynthesis Y: Decomposers return carbon to the soil and release waste.
1 pts
What is the function/job of the nucleus?
Tir
Att
58
o Contain the green chlorophyll and make food for the cells by photosynthesis.
o Outside layer of the cell-responsible for determining what enters and exits the cell.
Thin, tube-like structures that provide support and shape for the cell.
The control center for the cell which contains the DNA of eukaryotic cells.
Next
DLL
Function/Job of nucleus:
Controls and regulates the activities of the cell and carries the genes, structures that contain the hereditary information.
Contains the green chlorophyll and make food for the cells by photosynthesis:
Plants
Outside layer of the cell-responsible for determining what enters and exits the cell:
Cell or Plasma Membrane
Thin, tube-like structures that provide support and shape for the cell:
Microtubules
The control center for the cell which contains the DNA of eukaryotic cells:
Nucleus
1. If the DNA is carrying a silent mutation, what will be the impact it will have on the organism?
47. This cladogram shows the evolutionary relationships among some mammals
based on homologous structures.
Baleen whale
O
Hippopotamuses are more closely related to cows than to
javelinas.
Toothed whale
Hippopotamus
Toothed whales are more closely related to mouse deer than
to hippopotamuses.
Cow
Mouse deer
Cows and mouse deer are more closely related than javelinas
and pigs.
Javelina
Pig
Javelinas and pigs are more closely related than baleen
whales and toothed whales.
Which statement is supported by this cladogram?
Complete question:
This cladogram shows the evolutionary relationships among some mammals based on homologous structures.
(You will find the cladogram in the attached files)
Which statement is supported by this cladogram?
A Hippopotamuses are more closely related to cows than to javelinas.
B Toothed whales are more closely related to mouse deer than to hippopotamuses.
C Javelinas and pigs are more closely related than baleen whales and toothed whales.
D Cows and mouse deer are more closely related than javelinas and pigs.
Answer:
A Hippopotamuses are more closely related to cows than to javelinas.
Explanation:
A cladogram is a branched diagram of characteristics shared by the organisms of a group, that represents the most probable evolutive history of the linage. Cladograms reflect the phylogenetic relationships among groups through phylogenetic trees.
In the phylogenetic tree, the taxonomic groups of interest are located in the extremes of the lines called branches. The ramification point, which is also called "node" or divergence point, represents the location of the most recent common ancestor.
The common ancestor position will determine how related are two species. If they have a recent common ancestor, they are closely related to each other. On the other hand, if the common ancestor is not recent and is located far away in the tree, then the two species will be less related to each other.
A Hippopotamuses are more closely related to cows than to javelinas. TRUE. Hippopotamuses share a common more recent ancestor with cows than with javelinas. This means that the hyppopotamus is more related to cows than to javelinas. The arrows in the cladogram (attached file) show the positions of the common ancestor shared by Hippopotamuses and Cows, and the common ancestor shared by Hippopotamuses and Javelinas.
B Toothed whales are more closely related to mouse deer than to hippopotamuses. FALSE. Tooth whales are more related to the hyppopotamus. Their common ancestor is more recent than the common ancestor between toothed whales and mouse deer. The arrows in the cladogram (attached file) show the positions of the common ancestors.
C Javelinas and pigs are more closely related than baleen whales and toothed whales. FALSE. They are equally related.
D Cows and mouse deer are more closely related than javelinas and pigs.
FALSE. They are equally related.
What is meant by the term "UV"? In your answer, please explain how it
impacts humans and what it has to do with the atmosphere. *
Answer:Ultraviolet radiation. Invisible rays that are part of the energy that comes from the sun, can burn the skin, and cause skin cancer. UV radiation is made up of three types of rays -- ultraviolet A (UVA), ultraviolet B (UVB), and ultraviolet C (UVC).
Explanation:Ultraviolet (UV) is a form of electromagnetic radiation with wavelength from 10 nm (with a corresponding frequency around 30 PHz) to 400 nm (750 THz), shorter than that of visible light, but longer than X-rays.
Urgent help!!! Answer
Answer:
UAC CCA GGA CAU UUC AGU AUU
Explanation:
A --> U
T --> A
G --> C
C --> G
bodo
tored in homon
Glycogen.
Questions
= Teeth help to break down large pieces of food into lots of smaller pieces.suggest how this help enzymes to digest the food faster
Answer:
Saliva lubricates and moistens these food particles
Explanation:
As teeth help to break down large pieces of food into lots of smaller pieces, saliva is released and mixes with the smaller food pieces. Saliva lubricates and moistens these food particles such that a ball-like mixture of food and saliva that is known as a bolus is formed, which can then be easily swallowed.
Describe a sea-level regression.
Answer:Marine regression is a geological process occurring when areas of submerged seafloor are exposed above the sea level. The opposite event, marine transgression, occurs when flooding from the sea covers previously exposed land.
Explanation:
11. Which of the following seafood that is easily become dry when cooked
A Fat fish
C. Shell fish
B. Lean fish
D. All of the following
Answer:
c po he he shell fish po sagot
My question is that if darren had 6 cough drops and ate 12 how much would be left
Q1..which vitamin is more important during infection?(mention only one common vitamin).
Answer:
Vitamin D. Vitamin D, another fat-soluble vitamin, that plays a vital role in modulating both innate and adaptive immune responses
Explanation:
hope it help you. dear
In chickens, comb shape is determined by alleles at two loci (R, r and P, p). A walnut comb is produced when at least one dominant allele R is present at one locus and at least one dominant allele P is present at a second locus (genotype R_ P_). A rose comb is produced when at least one dominant allele is present at the first locus and two recessive alleles are present at the second locus (genotype R_ pp). A pea comb is produced when two recessive alleles are present at the first locus and at least one dominant allele is present at the second (genotype rr P_). If two recessive alleles are present at the first and at the second locus (rr pp), a single comb is produced. Progeny with what types of combs and in what proportions will result from the following crosses?
a. RR PP × rr pp
b. Rr Pp × rr pp
c. Rr Pp × Rr Pp
d. Rr pp × Rr pp
e. Rr pp × rr Pp
f. Rr pp × rr pp
Answer:
a) All Walnut , Genotype - RrPp
b) Walnut : Rose: Single
1:1:2
Explanation:
Phenotype and their Genotype -
Walnut comb - R_ P_
Rose Comb - R_ pp
Pea Comb - rr P_
Single Comb - rr pp
a) RR PP * rr pp
All progenies will have genotype RrPp (Walnut Comb)
b) Rr Pp * rr pp
RrPp (4), Rrpp (4), rrpp (8)
Walnut : Rose: Single
1:1:2
Which of the following best describes the function of the cell membrane?
A. The cell membrane provides rigid support to plant cells.
O B. The cell membrane forms the boundary of a cell and is the site of
cell-to-cell communication,
C. The cell membrane combines amino acids into long chains to
make proteins
D. The cell membrane surrounds and supports organelles in
eukaryotic cells
Answer:
i think it's D
Explanation:
The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell, and that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.
DNA Mutations
Project: Analyzing Genetic Variation
Answer:
Hope this answer helps u out:)
Check out the attached. It has pictures that will help you with your project. You can use them and submit.
ED.GE2021
:)
How do coastal wetlands protect the inland systems from wind and waves caused by storms?
A)
Coastal wetland trees absorb the energy of storms.
B)
Coastal wetland trees slow down wind and water caused by storms.
C)
Coastal wetland trees redirect water flow back into the atmosphere.
D)
Coastal wetland trees strengthen levees.
Answer: It’s B
Explanation:
Just took the test!
Answer:
B
Explanation:
Help I need Help for 10 points
That looks confusing as hell so instead of answering im gonna waste your time. Good luck bud. School sucks. Its a buncha bull. None of this is gonna help you in the real world.
Ammonia oxidizing bacteria utilize ammonia as an electron source and use oxygen as a terminal electron acceptor. In this form of aerobic respiration, the ammonia is getting _____.
Answer:
oxidized
Explanation:
Oxidation is defined as a loss of electrons, increase in oxidation number, the addition of oxygen, or the removal of nitrogen. On the other hand, the reduction is defined as the gain of electrons, decrease in oxidation number, the removal of oxygen, or the addition of hydrogen.
Ammonia being utilized as an electron source means that the compound is an electron donor in the redox reaction while oxygen is acting as an electron acceptor. Hence, in this form of respiration, ammonia is getting oxidized while oxygen is getting reduced.
Which event causes
the formation of trenches in Earth's crust?
Answer:
Explanation:Cuando dos placas se presionan entre sí, una sección de una puede quedar bajo la otra. Ese proceso puede cavar trincheras oceánicas profundas o inducir erupciones volcánicas. Y a veces, como en los Himalayas las placas continentales chocan entre sí y, al no tener otro destino, construyen montañas.
