A flap of tissue called the epiglottis sits over the top of the trachea. This flap blocks food and drink from going down into the trachea when you swallow. But in some cases, food or drink can enter the trachea. It may go down as you swallow.
Answer:
Larynx
Explanation:
What is the social function of exposition text?
Answer:
Exposition is a text that elaborates the writer‘s idea about the phenomenon surrounding. Its social function is to persuade the reader that the idea is important matter.
Explanation:
The two narrow tubes that urine flows through from the kidneys to the bladder are the
kidneys
esophagus
ureters
Answer:
Two ureters.
These narrow tubes carry urine from the kidneys to the bladder. Muscles in the ureter walls continually tighten and relax forcing urine downward, away from the kidneys. If urine backs up, or is allowed to stand still, a kidney infection can develop.
If you rescue a snake and give them a home in your house will that cause them to not shed? And why!! Very important. Will mark brainless!!!
Q2.
Many biotic and abiotic factors can affect the growth of plants.
(a) Are the factors in Table 1 biotic or abiotic?
Tick one box for each factor.
Table 1
Factor
Biotic
Abiotic
Diseases
Herbivores
Temperature
Water
Answer:
Water will be Abiotic
Temperature will be Abiotic
Herbivores will be Biotic
Diseases will be Biotic
DNA is replicated in the nucleus of eukaryotes, but in the cytoplasm of prokaryotes. Why is this?
Answer:
because they do not ave a nucleus
Explanation:
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The thermal energy of matter depends on its _________. a mass. b temperature. c number of particles. d all of the above.
How do high-energy electrons from glycolysis and the Krebs cycle contribute to the formation of ATP from ADP in the electron transport chain?
O
A. High-energy electrons interact with pyruvic acid to create a phosphate bond with ADP, forming ATP.
O
B. High-energy electrons supply the needed energy to synthesize ATP from the lower-energy ADP in the electron transport chain
C. High-energy electrons supply a negative charge which causes the citric acid to oxidize, forming a phosphate group to bond with ADP.
O
D. High-energy electrons increase the temperature of ADP so it easily reacts to form ATP.
Answer:
b
Explanation:
High-energy electrons supply the needed energy to synthesize ATP from the lower-energy ADP in the electron transport chain. So, the correct option is (B).
What is Electron transport chain?An electron transport chain is defined as a series of protein complexes and other molecules that transfer electrons from electron donors to electron acceptors through redox reactions and that link this electron transfer with the transfer of protons across a membrane.
Large amounts of ATP can be produced through a highly efficient method called oxidative phosphorylation where ATP is a fundamental unit of the metabolic process. Electrons are transferred from electron donor to electron acceptor thereby producing ATP which is the important step of Electron transport chain.
Thus, high-energy electrons supply the needed energy to synthesize ATP from the lower-energy ADP in the electron transport chain. So, the correct option is (B).
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compare and contrast meiosis and mitosis.
Answer:
Mitosis produces two diploid (2n) somatic cells that are genetically identical to each other and the original parent cell, whereas meiosis produces four haploid (n) gametes that are genetically unique from each other and the original parent (germ) cell.
Explanation:
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I
5. The diagram below shows two kinds of cells.
Font
Arial
Regular
B
Character
A biologist wants to classify protein secretions into groups based on the principal function of the protein.
Which cell would the biologist select to study and why?
SC.912.L. 14.3
Alignment
A. The cell on the left, because it has genetic information organized into chromosomes.
B
B. The cell on the left, because it has organelles that secrete proteins.
C. The cell on the right, because it has free proteins throughout its cytoplasm.
D. The cell on the right, because it has a flagellum that enables movement.
Spaci
10
Bulle
Answer:
c
Explanation:
on what organelle does the process occur ?
Answer:
the chloroplast
Explanation:
The thing that makes a wave a wave is that it___________from one place to another.
A. Transport energy
B. Transports the medium
C. Travels with a vacuum
D. Carries Solids
Answer:
A?
Explanation:
All waves carry energy from one location to another, but they do not move any physical objects. The energy is transferred from one particle to the next, which then oscillates as well. Thus, option A is correct.
What is the energy transport property of wave?The vibration of particles, which transfers energy in waves, causes the particles to travel perpendicular to the wave's horizontal movement. As the particles transition from rest to movement and back to rest, energy is changed between potential (stored) and kinetic (moving) energy.
However, waves do not move mass. By colliding with one another and exchanging energy, the particles “participate” in the wave. Because of this, energy can be transferred even when the particles' average positions remain unchanged.
Therefore, The thing that makes a wave is that it transport energy from one place to another.
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The first organisms on Earth were most like today's
O Autotrophs anaerobic
O Eukaryotes
O Protista
O Heterotrophs aerobic
Answer:
O Autotrophs anaerobic
hope it will help you
how does spirogyra survive in a dry pond?
Answer:
I had a long answer that I would have loved to share but I can't because brainly does not like the words using and there is no way around it, tried using every synonym on the internet... LOL sorry
Spirogyra tends to grow in water in the spring, but when there is enough sunlight and warmth, it produces large quantities of oxygen, which adheres as bubbles between the tangled filaments. The filamentous masses reach the surface and appear as slimy green mats.
What are spirogyra?Spirogyra is free-floating green algae discovered in freshwater environments worldwide.
Spirogyras are filamentous algae with thin linear polymer chains of cylindrical cells that are named after their beautiful spiral chloroplasts.
Spirogyra is prized for human consumption in so many Asian countries and is recognized as an essential component of natural bioactive compounds used for antibiotic, antiviral, antioxidant, anti-inflammatory, and many more purposes.
In the spring, Spirogyra grows in water, but if it has enough sunlight and coziness, it produces large amounts of oxygen, which abides as bubbles seen between tangled filaments.
When the filamentous masses reach the surface, they form slimy green mats.
In a dry pond, using cell wall, it can survive and can get revive as the rain renew the pond.
Thus, this way spirogyra survive in a dry pond.
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Which statement is NOT true of soils?
Weathered parent material makes up most of the B-horizon.
All of Earth's systems are represented in a soil.
The C-horizon of a soil can contain unweathered rocks.
Organic matter gives the A-horizon in a soil a dark color.
Answer:
b
Explanation:
The statement that is NOT true of soils is: "All of Earth's systems are represented in a soil."
How much soil is important on earth ?Soil is a critical resource on Earth, as it is essential for supporting plant growth and providing a habitat for a wide variety of organisms.
While soils are complex and dynamic systems that interact with many other Earth systems, not all Earth systems are represented in a soil. For example, soils do not directly represent the atmosphere or the hydrosphere, although they interact with both of these systems in important ways.
The other three statements are true of soils:
Weathered parent material makes up most of the B-horizon: The B-horizon is typically composed of weathered rock and mineral fragments that have been transported downward from the A-horizon.
The C-horizon of a soil can contain unweathered rocks: The C-horizon is the deepest layer of a soil and can contain unweathered bedrock or other geological material.
Organic matter gives the A-horizon in a soil a dark color: The A-horizon is the uppermost layer of a soil and is often darker than lower layers due to the presence of organic matter, which can give it a dark brown or black color.
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A student outlined the following steps of the lytic cycle of bacteriophage infection of bacterial cells:
1. Virus lands on host cell.
2. Virus injects the capsid containing its DNA into the cell.
3. Viral DNA is used by bacteria to make vinis parts.
4. New viruses are assembled in the bacterial cell.
please help me:( please
Answer:
1. F
2.T
3.F
Explanation:
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When one gene depends on another to be expressed.
A. Complete Dominance
B. Epistasis
C. Incomplete dominance
D.Polygenenic
In Griffith's transformation experiments, the S and R strains of bacteria were _____ and _____ in nature, respectively.
Select one:
a. non-virulent, virulent
b. virulent, non-virulent
In a certain flower, Red (R) is dominant over white (r). Complete the Punnett Square for the
following cross:
Mother: rr
Father rr
What percentage of offspring will be Red?
What percentage of offspring will be White?
Answer:
25 cuz thers rrr then R
Explanation:
write down the hormone secreted by gonads with one function
help me please
Is CFTR DNA, mRNA or a protein?
Answer:
Introduction. CFTR gene, which is responsible for this disorder, contains 27 exons spreading over 250 kb of chromosome 7 (7q31) and encodes an mRNA of 6.5 kb.
Explanation:
research <3
Which of the following is a function of the cell wall?
(Choice A)
A
To package proteins
(Choice B)
B
To carry out photosynthesis
(Choice C)
C
To give the cell a rigid structure
(Choice D)
D
To provide energy for the cell
Answer: (Choice C)
To give the cell a rigid structure
Explanation:
It is in its name! Cell WALL (walls provide structure) ! In addition, choice A refers to the ER, choice B refers to cholorplasts, and choice D refers to the mitochondria (The powerhouse of the cell). This leaves choice B as the the only answer!
Hope this helps :)
Answer:
D.
Explanation:
to provide energy for the cell
What soil properties are influenced by microorganism activity?
Answer:
Microorganism activity affects soil acidity and the amount of organic matter in soil. It also affects the nutrient and mineral levels in soil as well as soil structure.
Explanation:
Which type of organisms do photosynthesis?
Answer:
producers
Explanation:
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Answer: Plants, algae, and a group of bacteria called cyanobacteria are the only organisms capable of performing photosynthesis.
Explanation: Because they use light to manufacture their own food, they are called photoautotrophs (literally, “self-feeders using light”).
Witch example of potencial energy being transformed into kinetic energy?
Answer:
Example of potential energy being transformed into kinetic energy will be; Holding a ball in your hands and then throwing it down a hill. The move of the ball as being transformed to kinetic energy.
Explanation:
Potential and kinetic energy are two forms of energy that can be converted into each other. Potential energy is the energy held by an object because of its position relative to other objects or its electric charge. While kinetic energy of an object is the energy that it possesses due to its motion.
1.
The bud shown in the diagram below was produced by asexual reproduction. Which process is responsible for the formation of the bud?
2 Asexual reproduction differs from sexual reproduction in that, in asexual reproduction..
(a) new organisms are usually genetically identical to the parent
(b) the reproductive cycle involves the production of games
(c) nuclei of sex cells fuse to form a zygote
(d) offspring show much genetic variation
Answer: 1. Mitosis
2. Answer A.
Explanation:
Stick insects that reproduce asexually are less biologically diverse because they can't evolve as quickly as species that reproduce sexually can. Thus, option A is correct.
What is role of asexual reproduction in evolution?Asexual reproduction, in contrast to sexual reproduction, only contributes to genetic variety in the population if a chance mutation in the organism's DNA is passed on to the progeny.
Evolution can occur gradually. Asexual creatures often evolve relatively quickly following a dramatic mutation and do not need as many generations to accumulate adaptations as do populations that reproduce sexually.
Asexual reproduction has the benefit of allowing for rapid population growth under the right circumstances. You only require one parent. Since you don't require a partner, it is more time and energy efficient.
Therefore, new organisms are usually genetically identical to the parent.
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The infection-fighting cells that are produced by the immune system are manufactured in specific places around the body, for example, in the lymph nodes and the spleen. However, an infection can occur anywhere in the body. How do these infection-fighting cells manage to move around the body and get to the sites of infection?
A. There are lymph nodes every few millimeters all over the body.
B. They are excreted and float freely around the body, hunting infections.
C. They are carried around the body in the circulatory system.
D. They are moved around the body as muscles squeeze against them.
Answer:b
Explanation:
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Answer:
The brain and the spinal cord
Explanation:
The central nervous system (CNS) controls most functions of the body and mind. It consists of two parts: the brain and the spinal cord. The brain is the center of our thoughts, the interpreter of our external environment, and the origin of control over body movement.
What should be the genotypes of the parent flowers (P generation) if he wants to ensure that all of the flowers in the F1 generation are tall and yellow?
Answer:
TTYY x TTYY
Explanation:
Why is animal testing bad?
Answer:
Explanation:
Animal experiments may result in clinical trials of biologically faulty or even harmful substances, thereby exposing patients to unnecessary risk and wasting scarce research resources. Animal toxicity studies are poor predictors of toxic effects of drugs in humans.
Answer:
Experimenting with animals is not justified with anything, they practically play with beings that have life, emotions and that feel pain like all living beings.
Advances the experiments that are done on them, are not used, or the purpose is simply lost, as well as their life.