The ejection of semen is a homeostatic function in the reproductive system that includes both skeletal and smooth muscle. Thus, the correct answer to this question is A.
The skeletal muscle is engaged during an erection, while the smooth muscle is engaged during semen ejection.
What are the differences between skeletal muscle and smooth muscle?Strait muscles linked to bones are referred to as "skeletal muscles." The neurological and endocrine systems control these voluntary, multinucleated, cylindrical muscles. Uninucleated smooth muscles have tapering ends. These non-striated muscles are controlled by the neurological system. Actin and myosin are two proteins that are essential for muscular contraction and are found in both skeletal and smooth muscles. However, actin is present in greater quantities in smooth muscles.
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What kind of land feature is shown at point C on the topographic map?
A. A step slope
B. A lake
C. A mountaintop
D. A gentle slope
Answer:
D. A gentle slope
Explanation:
PLEASE HELP WITH THIS ONE QUESTION
Answer:
The fist option!
Explanation:
The energy investment phase of glycolysis involves the investment of two ATP molecules and results in the formation of two molecules of glyceraldehyde phosphate. Two molecules of NADH + H+ are produced. This is an example of a coupled reaction.
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How can an invasive species be a
danger to an ecosystem?
A. They can out compete native species for
resources.
B. They have a significantly large effect on the
ecosystem.
C. They are not as attractive as native species.
Answer:
a
Explanation:
Invasive species can change the food web in an ecosystem by destroying or replacing native food sources. The invasive species may provide little to no food value for wildlife. Invasive species can also alter the abundance or diversity of species that are important habitat for native wildlife.
Answer: A. They can out compete native species for resources.
In your own words, explain the difference between the pitch and intensity of sound.
Answer:
The pitch of a sound is how high or low a sound is when we hear it, whereas the intensity of a sound is the energy/vibrancy of the sound over an area and depends on the frequency of the sound as well.
What happens at the end ofthe cell cycle?
Cell cycle is the process of changes that occur in newly formed cell by which it duplicates its genome,undergoes growth and divides to form two daughter cells.
All these events are coordinated and genetically controlled.
At the end of cell cycle,mitotic phase starts.Mitosis is the process by which chromosomes replicates and become equally distributed into two daughter nuclei.
These daughter nuclei have the same number and type of chromosomes as present in parent cell.
Unit 1 Review Notebook Check
I Will give 40 points for this
Long strands of genetic information are stored in ________. A. Enzymes B. Adenine C. Chromosomes D. Mutations
The genetic information is the encoded proteins passed through hereditary. The genetic information is stored in the chromosomes of the cel. Thus, option C is correct.
What are chromosomes?Chromosomes are the hereditary unit of an organism that passes from the parent cell through cell division and reproduction to the daughter cells.
The chromosomes comprise chromatin that is made of the proteins and DNA molecules wrapped around the histones to form a dense and compact structure.
They look like long threads that are present inside the cell's nucleus and code for specific information that gives the genotype and phenotype of an organism. It gets copied during the cell cycle.
Therefore, option C. chromosomes store the genetic information.
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Which of the following is NOT one of the key characteristics of a well-designed test?
A) standardization
B) reliability
C) validity
D) brevity
Answer:
D) brevity
Explanation:
A test can be defined as an examination or quiz given to a student (pupil) during an academic calendar in order to measure or determine his or her intelligence. It is usually graded based on a set of defined grades or scores.
The key characteristics of a well-designed test includes the following;
I. Standardization: it is important that test is set based on certain criteria and acceptable rules within the education community and curriculum.
II. Reliability: the questions contained in a test should be credible and backed by correct answers.
III. Validity: the test questions should be genuine and authentic across board.
However, brevity simply means succinctness or conciseness i.e the test should be brief and very short in duration.
Which structure allows
gases and nutrients in
and out of the cell?
A. mitochondria
B. cytoplasm
C. nucleus
D. cell membrane
The cell membrane allows gases and nutrients in and out of the cell.
The correct answer is option D, the cell membrane. The cell membrane, also known as the plasma membrane, is a vital component of all cells. It serves as a selectively permeable barrier that separates the internal environment of the cell from its external surroundings. One of its crucial functions is to regulate the movement of substances in and out of the cell, including gases and nutrients.
The cell membrane is made up of a phospholipid bilayer embedded with various proteins. These proteins play a role in facilitating the transport of molecules across the membrane. There are two main types of transport across the cell membrane:
Passive Transport: This includes processes like diffusion and facilitated diffusion, where substances move from an area of higher concentration to an area of lower concentration. Small gases like oxygen and carbon dioxide can passively diffuse through the lipid bilayer of the membrane.
Active Transport: This involves the use of energy to move substances against their concentration gradient, from an area of lower concentration to an area of higher concentration. Nutrients and other molecules can be actively transported using protein pumps.
In both cases, the cell membrane is responsible for controlling what enters and exits the cell, maintaining an appropriate internal environment for cellular functions. This selective permeability ensures that essential gases like oxygen and nutrients can enter the cell while waste products can exit. Thus, the cell membrane is a crucial structure that enables the exchange of gases and nutrients required for cellular metabolism and survival.
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Using the scale bar, determine the diameter of the nucleus of the cell on the left, giving the units.
The diameter of the nucleus of the cell on the left is 1000 nanometers, using the scale bar.
How to determine the diameter of the nucleus?The diameter of the nucleus can be determined by using a scale bar. A scale bar is a line that is drawn on an image to indicate the size of the objects in the image. The scale bar is usually measured in micrometers (µm) or nanometers (nm).
The scale bar on the image is 400 nanometers. The nucleus of the cell on the left is approximately 2.5 times the length of the scale bar. Therefore, the diameter of the nucleus is approximately 1000 nanometers.
Diameter of nucleus = 2.5 × 400 nm = 1000 nm.
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The image shows a plant cell containing chloroplasts.
nucleus
ribosome
mitochondrion
Golgi complex
cell wall
cell
membrane
-chloroplast
vacuole
What is the main function of chloroplasts in a plant cell?
Choose the correct answer.
They produce proteins and carbon dioxide.
They store water, oxygen, and carbon dioxide.
They transform light, water, and carbon dioxide into sugar and oxygen.
They protect cells from chemicals found in the surrounding environment.
Save and exit
Answer:
they transform light, water and CO2 into sugar and oxygen via photosynthesis
Explanation:
Why is a small population greatly affected during genetic drift?
3.07 anatomy and physiology endocrine system
how to I don't know hehehe ans = 89
(03.04 LC) When water changes from a liquid on Earth's surface to a gas in the atmosphere, this is known as?
transportation
condensation
evaporation
precipitation
give the correct biological term for the following programme where members of the community help patients take their medicines regularly
Answer:
Explanation:
Supervised treatment
Sucrose is formed when glucose is joined to fructose by a
Answer:
Disaccharides: Sucrose is formed when a monomer of glucose and a monomer of fructose are joined in a dehydration reaction to form a glycosidic bond. In the process, a water molecule is lost. ... In sucrose, a glycosidic linkage is formed between carbon 1 in glucose and carbon 2 in fructose.
E1 Biol 2281 usage of internet to analyze nuclei acid
Are these right?
We can see here that going through the answers provided in the image, we can deduce that they are correct though it will be proper to cross-check before submitting.
What is nuclei acid?Nucleic acids are biomolecules that play a crucial role in storing, transmitting, and expressing genetic information in living organisms. They are essential for the functioning and inheritance of genetic traits.
Both DNA and RNA are polymers made up of repeating units called nucleotides. Each nucleotide consists of three components: a sugar molecule (deoxyribose in DNA and ribose in RNA), a phosphate group, and a nitrogenous base.
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Three circuit diagrams are shown. Which statement about the circuit
diagrams is accurate?
Circuit A Circuit B Circuit C
A. Circuits A, B, and C are all series circuits.
OB. Circuits A and C are series circuits, and circuit B is a parallel
circuit.
C. Circuits A and B are series circuits, and circuit C is a parallel
circuit.
OD. Circuit A is a series circuit, and circuits B and C are parallel
circuits.
From the diagram, circuit a and b are series circuit while c is parallel. Option C
What is a parallel and series circuit?
The components in a parallel circuit are linked together so that the electric current can go along several different routes. The power source is directly connected to each component, forming parallel branches. While the current in a parallel circuit can vary, the voltage between each component is constant.
The components of a series circuit are connected one after the other to create a single path for the passage of electricity. While the voltage across each component can change, the current flowing through each component is constant.
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Beginning your introduction to your research paper with a question is a great way to capture the reader's interest.
True
False
Answer:
True
Explanation:
Yes it is since it intrigues to reader to go deeper into your research paper. In addition, it also gives you good dialoge for what you write/say next.
B. Liverworts (Hepatophyta)
1. Observe the living green "leafy" gametophyte stage at Station A. These organisms have leaf-
like, stem-like, and root-like structures. Draw and label structures of the liverworts. Be sure
to include labels of the following items: gametophyte, n, sporophyte, 2n, rhizoides, leaf-like
structures, and thallus.
2. Use the dissecting scope and look at the sporophyte, gametophore, rhizoides, and thallus.
What do you notice? Write down some observations of each.
3. Compare the moss to the liverworts. How are they similar and how are they different?
Answer:
Explanation:
Title: Observation of Liverworts (Hepatophyta)
Objective: To observe the living green "leafy" gametophyte stage of liverworts and compare them with moss.
Hypothesis: Liverworts and moss may share some similarities in structure, but there may be significant differences between them.
Observations:
Liverworts Structures:
Gametophyte: The main plant body of the liverwort, which is haploid (n) and produces gametes.
Sporophyte: A structure that grows from the gametophyte and produces spores. It is diploid (2n).
Rhizoides: Root-like structures that anchor the gametophyte to the substrate and absorb water and nutrients.
Leaf-like structures: Flattened structures that resemble leaves but do not have true veins or stomata.
Thallus: The entire plant body of the gametophyte, which lacks true stems or roots.
Observations of different structures in liverworts:
Sporophyte: Small and inconspicuous, growing from the gametophyte.
Gametophore: The stem-like structure that supports the gametophyte and sporophyte.
Rhizoides: Thread-like structures that attach the gametophyte to the substrate and absorb water and nutrients.
Thallus: The plant body of the gametophyte that lacks true stems or roots.
Comparison between liverworts and moss:
Similarities:
Both are non-vascular plants.
Both have a haploid (n) gametophyte and a diploid (2n) sporophyte stage.
Both reproduce by spores and require water for fertilization.
Differences:
Liverworts have leaf-like structures and a thallus, while mosses have true leaves and stems.
Liverwort sporophytes are small and inconspicuous, while moss sporophytes are tall and conspicuous.
Liverworts have rhizoides, while mosses have true roots.
A crane has a sharp and pointed beak while the duck has a flat beak.Explain why
Answer:
The crane has a sharp and pointed beak adapted for catching and grasping prey. The sharp beak allows the crane to effectively stab and pierce its prey, such as fish, frogs, or small animals. The pointed shape helps the crane to accurately target its prey and secure a firm grip.
On the other hand, the duck has a flat beak, which is better suited for its specific feeding habits. Ducks are primarily filter feeders, and their flat beak enables them to sift through water or mud to collect small organisms, insects, and plants. The flat beak acts like a sieve, allowing the duck to strain out food particles while retaining water.
The difference in beak shape between the crane and the duck reflects their distinct feeding strategies and ecological roles. Each species has evolved its beak shape to optimize its ability to capture and consume the specific types of food sources available in their respective habitats.
Situations where negative peer pressure is commonly felt include all of the following EXCEPT: A. drugs, alcohol, and tobacco use B. truancy and academic dishonesty C. sexual activity D. studying in a group for a test Please select the best answer from the choices provided. A B C D Mark this and return
Answer:
D.
studying in a group for a test
Explanation:
edge2020
It can lower one's self-esteem and result in subpar academic performance, estrangement from family and friends, or an escalation of depression and anxiety. Thus option D is correct.
What negative peer pressure is commonly felt to include?This involves bribery, threats, taunting, persuasion, and other forms of coercion. While passive peer pressure does not entail manipulation or persuasion, it is comparable to active peer pressure in that it influences you to do something you do not want to do. It has a softer edge.
Negative peer pressure might include demands to behave or dress a certain way. Cheating, allowing others to copy your work, or copying someone else's work. Excluding some individuals from social events.
Therefore, studying in a group for a test.
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What is a huge source of methane gas? *
The Lannister’s family went to bed one frigid winter night and were found deceased the next day. A squirrel’s nest was found in their chimney. What happened to the Lannisters?
Answer:
They died due to suffocation.
Explanation:
The whole Lannister’s family died due to the shortage of oxygen in the room because of squirrel’s nest in the chimney. Chimney is the only way for the removal of toxic gases and smoke produced from the burning of wood. The squirrel’s nest block the passage and the smoke and toxic gases stay in the house which causes suffocation and the whole Lannister’s family died.
29. Brain has one son, two grandchildren, and three great-grandchildren. This is example of
O exponential growth.
Odynamic growth.
O linear growth.
Obinary growth.
This is an example of exponential growth.
Exponential growth refers to a pattern of growth where the quantity or size of something increases at an accelerating rate over time.
In the given scenario, Brain has one son, two grandchildren, and three great-grandchildren.
Each generation is producing more offspring, resulting in a rapidly increasing number of descendants.
The progression from one generation to the next demonstrates exponential growth because each subsequent generation adds more individuals than the previous one.
As the generations continue, the number of descendants grows exponentially larger.
Exponential growth can be observed in various natural and human-made systems, such as population growth, compound interest, and the spread of infectious diseases.
In this case, the number of descendants in Brain's family tree follows an exponential pattern, as each new generation multiplies the number of offspring, leading to a significant growth rate.
Therefore, the example given aligns with the concept of exponential growth.
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describe one similarity and one difference between fungi and plants
Explanation:
Both the plant and fungus kingdoms have some common characteristics. ... While both are eukaryotic and don't move, plants are autotrophic - making their own energy - and have cell walls made of cellulose, but fungi are heterotrophic - taking in food for energy - and have cell walls made of chitin.
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10. Science is the attempt to (A)
and (B)
the world using the (C)
method
Answer:
c
Explanation:
why are you asking this kind of question are you
september would the earth be experiencing a solstice or an equinox
how do you know
In September the earth will be experiencing an equinox
Equinoxes occur between March and September. When the Sun's rays strike the equator at midday and at a 90° angle, it is considered an equinox. It stands for the idea that day and night have equivalent lengths. The sunset and dawn are separated by 12 hours everywhere on Earth. One may observe how quickly the sunset and dawn hours shift throughout the day the farther one goes from the equator.
Whereas, solstices occur in June and December. The contrary is visible close to the solstices. For a few days, both the sunset and sunrise appear to be constant. Over the course of the year, the time of day when the sun is directly overhead where one lives also gradually changes.
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Laetiporus sulphureus also known as chicken of the woods , is a multicellular organism that is heteroph
Laetiporus sulphureus, or chicken of the woods, is a multicellular organism in the Fungi kingdom. It obtains its nutrition as a heterotroph by decomposing dead wood. It is known for its bright color and spongy texture when cooked.
Laetiporus sulphureus, also known as chicken of the woods, is a multicellular organism that belongs to the kingdom Fungi. It is a heterotroph, meaning it obtains its nutrition by consuming organic matter. Chicken of the woods is a saprophytic fungus, which means it decomposes dead wood and obtains nutrients from it. It is commonly found growing on the trunks of trees, particularly oak and cherry trees.Chicken of the woods is characterized by its vibrant orange or yellow color and its bracket-shaped fruiting bodies. These fruiting bodies consist of layers of spore-producing tubes underneath. The mushroom has a soft and spongy texture when cooked, making it a popular ingredient in various culinary dishes.For more questions on Laetiporus sulphureus
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I really need help for homework Biology 102 and it's Due: Feb 27, 2023 at 11:59 PM EST
Question 8 part 3
Answer:
1) This happens in the nasal cavity or nostrils. The cilia (nasal hairs) are the ones responsible for this in which the particles are filtered. Then in the back of the throat is where the nasal cavity and mouth meet is the pharynx.
2) This is the correct function. There are four stages of gas exchange that occur when oxygen is breathed into the body: ventilation, pulmonary gas exchange, gas transport, and peripheral gas exchange. The processes of gas inhalation, exhalation, exchange at the alveoli, transportation to the blood, and subsequent diffusion through different cellular membranes situated in body tissues are described. The lungs contain millions of alveoli, which are surrounded by capillaries. Each bronchiole ends with a collection of tiny air sacs known as alveoli. Capillaries, which are very small blood arteries, surround alveoli. These air sacs are filled with oxygen-rich air from the air you breathe in. The exchange of gases takes place here.
3) It travels down both, not just one. The air travels passed the larynx and into the trachea. The trachea is divided into two tubes which are known as the bronchial tubes. The left one leads to the left lung and the other to the right lung. From here the air is brought to even smaller tubes known as bronchioles.
4) Air enters from the outside during inhalation to either these two openings: nostrils or external nares. The cilia serve the purpose of capturing large inhalation particles. The internal nares are the openings between the nasal cavity and the pharynx. Hence, air enters into the nasal cavity.
5) From the pharynx, air flows through the glottis to the trachea and the cycle continues. The glottis and two or three other cartilages form the larynx, a simple tubular structure in most reptiles.
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