Testosterone is a small steroid hormone that is important in cell signaling. Which of the following indicates where testosterone enters a cell and why it is able to cross at that point?
А
1, because testosterone is nonpolar and can diffuse through the membrane.
B
2, because testosterone covalently binds to a surface protein and transports into the cell.
C3, because testosterone dissolves in water and flows through the channel
D
4, because testosterone is filtered out of the extracellular fluid and taken into the cell by endocytosis.
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Answer:
A
Explanation:
explanation is given in answer
Testosterone is a steroid hormone. It is a primary sex hormone. It plays key role in the development of male reproductive tissues such as testes and prostate.
Testosterone is lipophilic signaling molecule. The plasma membrane consist of lipid bilayer so testosterone diffuse through the lipid bilayer and enters the cell.
So, the answer is option A because testosterone is nonpolar and can diffuse through the membrane.
other options-
B because testosterone covalently binds to a surface protein and transports into the cell- incorrect. Testosterone doesn't binds to a surface protein and transports into the cell, it diffuses through the cell membrane.
C because testosterone dissolves in water and flows through the channel-incorrect. Testosterone is nonpolar.
D because testosterone is filtered out of the extracellular fluid and taken into the cell by endocytosis-incorrect. Testosterone is not filtered out of the extracellular fluid and it is not taken into the cell by endocytosis.
Learn more about testosterone-
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22 Carbohydrates perform many metabolic and structural jobs inside the living organisms. An
example of a carbohydrate that provides structural support to cells is –
F chitin, a carbohydrate that strengthens the exoskeletons of insects and other arthropods
Gstarch, a carbohydrate that is used by some plants as a way to store glucose
H cellulose, a carbohydrate that is used by plants to construct the cell wall
J glucose, a carbohydrate that is utilized by all life forms in the construction of nucleotides
Answer:
The answer is J
Explanation:
scientists are studying cold and dry environments on earth that are like mars. what kind of prokaryotes do you think they might find in these environments on earth? explain, please
Answer:
The answer is; extremophiles
These organisms are found in places on earth that would be damaging to most life on earth. There are different categories of extremophiles depending on their environment. For example, those that live in the extreme cold (even below 150C ) are called Psychrophiles while Xerophiles live extreme desiccation.
1. What is the name of the random
movement of molecules?
Active transport
Diffusion
Osmosis
plz answer
Which of these trophic levels has the least chance to exist in
a food chain?
a
Second
b Fifth
C Third
d First
A population of rabbits moves to a dry desert environment. How could natural selection be a main contributing factor to speciation in this rabbit population?
A) Most of the rabbits die due to dehydration.
B) Some rabbits reproduce at a different rate.
C) The rabbits are able to interbreed with other species of hare living in the desert.
D) Some of the rabbits are better adapted to the drier environment.
Answer:
D) Some of the rabbits are better adapted to the drier environment.
Explanation:
Natural selection is when the environment favours certain traits in organisms. Organisms that possess these traits are more likely to survive and pass on the traits to their offspring, leading to evolution.
Speciation is when populations become different enough (for example due to natural selection acting on variation in the population) that new species form.
If some rabbits posses traits that make them better adapted to the drier environment, then these rabbits are more likely to survive and pass on these traits to their babies. Eventually, this can cause speciation, as the rabbits that live in the desert are subject to different selective pressures (drier environment)
Help me please !!!
Which of the following can be inferred from the diagram above that shows the dependence of potential Energy on the Internuclear distance between two atoms?
A)The atoms form a bond with a bond length of 25 pm
B)The atoms form a bond with a bond length of 75 pm
с)The net force between the atoms is attractive at 25 pm
D)The net force between the atoms is attractive at 75 pm
Answer:
A)The atoms form a bond with a bond length of 75 pm
Explanation:
The Morse curve is a plot of potential energy against internuclear distance between two atoms.
When two atoms are far apart, the bond energy is zero, this means that there is no significant interaction between the both atoms. Hence, when two atoms are positioned at infinite distance from each other, they do not interact with each other appreciably. At internuclear distance within the range of atomic diameter, attractive forces predominate between atoms. At shorter distances repulsive forces predominate and the energy of system is quite high. The minimum point in the plot of a Morse curve represents equilibrium between attractive and repulsive forces.
The internuclear distance that corresponds to this minimum point is known as the equilibrium bond length.
For the plot shown in the question, the minimum point occurs at an internuclear distance of 75pm. This corresponds to the bond length of the system.
Analyze: What relationship, if any, do you see between a star’s color and its temperature?
If the density of one of the colored solutions was 1.06 g/ml and the volume of the solution was 2500 ml, what would be the mass of the solution?
Answer:
M=2650
Explanation:
If Density's equation is D=m/v then yo find mass, you do the opposite.
M=D*V
M=1.06*2500
M=2650
To check:
1.06=2650/2500(D=M/V)
FReE sTuFf BrOooOooOOoOO
Question tho(because they take it down if you don't)
What is the purpose of EaTiNg?
Will give Brainliest :')
Answer:
We eat because we are sad and deprived of love. That one compliment you got from 5 years ago from a girl? Yeah, you still remember that don't you? Well, guess what, now she's married to a guy more handsome than you. When she gave you that compliment, she forgot about it a day later. Why are you still holding on? Eating tubs of icecream any crying yourself to sleep will do no good. Time to pack it up Nickocado Avocado.
Nah I'm joking :')
Explain how seeds travel. Be sure to give examles to support your explantion psb quic
Answer:
Wind, Water, Animals, and Fire.
Explanation:
Wind moves seeds from one place to another. When the seed gets into the air, it gets pushed by wind to another place. Water moves seeds when seeds fall into water and the water moves the seed downstream, or the water evaporates. Seeds get moved by Animals when, for example, a bird eats seeds then flies to another location, and poops out the seeds. Seeds also get moved by Fire when a forest fire erupts and the seeds fall to the ground after the fire dissipates.
Hope this helps!
-Cryptic
Which is one piece of information that astronomers use to calculate the age of the universe?
Answer:
D-patterns of background radiation
Explanation:
According to the NASA, astronomers can estimate how old the universe is by comparing the age of the oldest stars and the rate of expansion of the universe. The rate of expansion of the universe is based on the Big Bang theory and it states that our universe is continuously expanding since it first developed. Astronomers measure Cosmic Microwave Background radiation resulting from the Big Bang.
Answer:
Patterns of background radiation
Explanation:
I just took the test lol
It would help a lot if some could help me answer vthese questions, will give brainliest to the person who answers it the best.
Included are 2 pictures of the first 2/3d’s of Data and Observations gathered on a day from Station 1, Cape Canaveral, Florida. And the last part of the data I have written out.
| 4:00pm | 86 | 1011.3 | 70% | Partly Cloudy | Variable 7 | 75 |.
| 5:00pm | 85 | 1011.5 | 72% | Partly Cloudy | SE7 | 75 |
| 6:00pm | 82 | 1011.7 | 77% | Mostly Cloudy | E5 | 74 |
| 7:00pm | 81 | 1012.1 | 82% | Mostly Cloudy | SE3 | 75 |
| 8:00pm | 79 | 1012.9 | 88% | Mostly Cloudy | SW6 | 75 |
| 9:00pm | 78 | 1013.8 | 90% | Overcast | SW3 | 75 |
| 10:00pm | 77 | 1014.4 | 94% | Overcast | SW7 | 75 |
| 11:00pm | 76 | 1014.3 | 100% | Overcast | Calm | 75 |
Using the weather data in Table 1, create a 12-hour general weather forecast for the next day following the data collected.
Questions and Conclusion
1. Write a summary of the weather that occurred during the 24 hours in Table 1.
2. What are the possible sources of error in the weather data?
3. What relationships do you notice between temperature, dew point, humidity, cloud cover, and air pressure? Provide evidence for these relationships from data in Table 1.
4. In conclusion, how did your graphs support or contradict your 12-hour forecast for the following day?
5. Describe additional data you could collect to make your forecast more reliable.
6. What did you learn about weather forecasting by completing the activity(optional to answer, but an idea for something to write as a response would help)
Explanation:
1. During the day, the earth is heated by the sun. If skies are clear, more heat reaches the earth's surface (as in the diagram below). This leads to warmer temperatures.However, if skies are cloudy, some of the sun's rays are reflected off the cloud droplets back into space. Therefore, less of the sun's energy is able to reach the earth's surface, which causes the earth to heat up more slowly. This leads to cooler temperatures.When forecasting daytime temperatures, if cloudy skies are expected, forecast lower temperatures than you would predict if clear skies were expected.At night cloud cover has the opposite effect. If skies are clear, heat emitted from the earth's surface freely escapes into space, resulting in colder temperatures.However, if clouds are present, some of the heat emitted from the earth's surface is trapped by the clouds and reemitted back towards the earth. As a result, temperatures decrease more slowly than if the skies were clear.When forecasting nighttime temperatures, if cloudy skies are expected, forecast warmer temperatures than you would predict if clear skies were expected.
2. The possible sources of error are human error and misreading the data.
3, As air temperature increases, air can hold more water molecules, and its relative humidity decreases. When temperatures drop, relative humidity increases. High relative humidity of the air occurs when the air temperature approaches the dew point value.
4. When forecasting if cloudy skies are expected, forecast lower temperatures than you would predict if clear skies were expected.
5. A more reliable approach to weather forecasting is known as the steady-state or trend method. This method is based on the knowledge that weather conditions are strongly influenced by the movement of air masses that often can be charted quite accurately.
6. Weather forecasts are made by collecting as much data as possible about the current state of the atmosphere (particularly the temperature, humidity and wind) and using understanding of atmospheric processes (through meteorology) to determine how the atmosphere evolves in the future
Which organisms below made up of cells that do not have a cell wall
Humans or either animals
You are doing a lab in science and place a piece of chocolate in the window. What will happen to the chocolate after about an hour?
will give brainliest!
a. it will stay the same
b. it will melt
c. it will turn a different color
d. it will become cold
Answer:
b
assuming the sun would be out that day, after an hour the chocolate would have melted, but both b and d would work, but b is more likely.
Do you think partial melting will occur if there is too much amount of water in the subduction zone?
Answer:
Water plays a crucial role in the melting of Earth's mantle. ... At oceanic subduction zones, water released by the subducted slab may induce melting of the overlying mantle wedge or even the slab itself, giving rise to arc magmatism, or may evolve into a supercritical fluid.
true or false :plant produce other macromolecules like proteins and lipids along with carbohydrates durring photosynthesis
Answer:
True
Explanation:
Not only carbohydrates, as was once thought, but also amino acids, proteins, lipids (or fats), pigments, and other organic components of green tissues are synthesized during photosynthesis.
Question 5 of 10 Many people try to eliminate fat from their diets. What is one reason eating some fat is necessary? A. Cells need fatty acids to make more of their outer covering. B. Cells can get more energy by breaking down polysaccharides. C. Breaking down fat molecules is the only way for cells to get energy O D. Having more saturated fats makes blood vessels healthier.
Answer:
a
Explanation:
fats are required for cell growth
list ten usefulness of science
Answer:
Explanation:
1. Discovering how exactly the building blocks of life work
2. Being able to determine how things in the past have evolved
3. To learn to problem solve
4. To learn the characteristics of genes
5. We can help develop new technologies
6. Learning how I decoupled traits from Botha parents can be useful
7.science can help you understand your own body and how it works
8. Learning about the environment around us
9. Learning how the safety of science can prevent disasters
10. If we didn’t have science today we wouldn’t know half of the things we see
Place the following events of the light-independent reaction in the correct order (1-4)
Explanation:
a. Photosystem II Light shining on pigments energizes electrons that come from water.
b. Electron transport chain: High energy electrons move down the chain, which pumps H+ ions to inside of the thylakoid
c. Photosystem I: electrons are reenergized with more light.
d. Electron Transport: the reenergized electrons are transferred to NADP+ to make NADPH
help, please. I'll give brainliest to the first person who gets it right.
Answer:
its d
Explanation:
Answer:
Explanation:
i cant see it unu
A fly flaps its wings back and forth 25 times in one second. The period of wing flapping is?
Answer:
The period is 0.04 sec
Explanation:
This problem is based on oscillatory motion.
What is the period of oscillation?
This can be defined as the time taken to complete one full revolution or oscillation.
given that the fly flaps its wings back and forth 25 times in one second. then the frequency is 25 Hz
we know that period T= 1/F
T= 1/25
T=0.04 sec
How does carpool lines affect economy?
The purpose of HOV lanes is to encourage more efficient use of highway capacity by increasing average vehicle occupancy, thereby accommodating high levels of passenger travel while reducing total traffic volumes. ... The result is a pure gain to highway users.
Hi guys does anyone have notes for lesson characteristics and classification of living organisms? Also I need some questions so that I can be prepared for the test
Answer:
Explanation:
Classification of Living Things Notes
1. An organism is a living thing.
2. Characteristics of all living things:
1) Organisms obtain and use resources. All organisms must obtain resources, such as food and water, which provide required energy to perform the basic processes of life, like growing, developing, and repairing injured parts.
2) Organisms respond to stimuli: A stimulus is any change in an organism’s surroundings that will cause the organism to react. Examples of environmental stimuli include changes in the amount of light present, changes in temperature, sound, amount of water, space, amounts of food present. The reaction to the stimulus is called a response. It can be an action or behavior performed by the organism.
3) Organisms reproduce-produce offspring that have similar characteristics as the parents. Reproduction can occur in one of two ways:
a) Asexual reproduction involves one parent that makes an exact copy of itself. The offspring are identical to the parent.
b) Sexual reproduction involves two parents. Sperm cell from the male and egg cell from the female combine to produce offspring that have characteristics from each parent.
4) Organisms grow and develop. Growth is the process of an organism becoming larger. Development is the process that occurs during the life of an organism that results in the organism becoming more complex. Organisms require energy to grow and develop.
3. Classification is the process that scientist use to arrange organisms into groups based on the shared observable characteristics.
4. Taxonomy is the science of identifying and classifying organisms into groups.
5. A taxonomist is a scientist who identifies and names organisms based on their similarities and differences.
6. Taxonomist use physical characteristics as well as DNA, genetic information, to classify organisms.
7. Scientist all over the world study organisms, in order to avoid confusion scientists need a universal way of naming organisms.
8. A dichotomous key is a tool used to identify organisms. It uses a series of questions, each with only 2 answers.
9. Linnaeus developed a system for classifying organisms called binomial nomenclature. It uses two Latin words to name an organism. The name is made up of the genus and species of the organism. The name is written in italics, the genus is capitalized, and the species is lower case; for example, the scientific name for a human is Homo sapiens.
10. The Linnaeus system is made up of seven levels, Kingdom, Phylum, Class, Order, Family, Genus, and Species.
1) King Philip Could Only Find Green Socks is one mnemonic way to remember the order of the levels. Another is King Philip Came Over For Good Spaghetti.
2) The levels are arranged from the most broad, Kingdom, to the most specific, Species.
11. Kingdom- organisms are placed into kingdoms based on their ability to make food and the number of cells in their body.
12. Phylum (phyla is plural)- In the Plant Kingdom, phyla are sometimes called divisions. In the Animal Kingdom, there are 35 different phyla.
13. Class, Order, Family-these levels become even more specific. Each level has fewer organisms that have more in common with each other as you move down the levels.
14. Genus- contains closely related organisms. The genus is the first word in an organism’s scientific name.
15. Species- consists of all the organisms of the same type which are able to breed and produce young of the same kind. The species is the second word in an organism’s scientific name.
16. Most scientists classify organisms into 5 kingdoms: Plants, Animals, Protists, Fungi, and Monera.
1) Plants (Plantae)- the plant kingdom is made up of plants. Plants are autotrophs, they make their own food. Plants are eukaryotes; they are made up of many cells. Plants are divided into 2 groups: vascular and nonvascular.
2) Animals (Animalia)- the animal kingdom is made up of animals. Animals are heterotrophs- they must obtain food by eating it. Animals are eukaryotes. The 35 phyla are divided into two groups: vertebrates and invertebrates.
3) Fungi- the fungi kingdom is made up of molds, yeasts, and mushrooms. Fungi are heterotrophs because they must absorb their food. Yeasts are one celled, while molds and yeasts are eukaryotes. Their cells have a nucleus, a cell wall, and no chlorophyll. Most fungi are decomposers, they break down dead organisms.
4) Protists (Protista)- the protists are made up of organisms that cannot easily fit into the plant, animal, or fungi kingdoms. They are one celled organisms with a nucleus or simple multicelled organisms. Some protists are autotrophs, some are heterotrophs.
5) Monera- the Monera kingdom is made up of bacteria. Their cells do not contain a nucleus. Some bacteria are autotrophs, some are heterotrophs.
What do scientists think happens in the core to produce the Earth's magnetic field?
Answer:
The Earth's magnetic field is believed to be generated by electric currents in the conductive iron alloys of its core, created by convection currents due to heat escaping from the core.
Explanation:
This table shows situations that are affecting Earth’s energy balance in certain areas.
Situation Experiment
1 More clouds have formed, resulting in twenty-eight percent being reflected back to space.
2 Forty-nine percent is absorbed by the land in the area.
3 Ice has melted into deep ocean water.
4 An ice sheet has formed where water was.
5 Three percent of the energy that hits the surface is reflected back to space.
Which three situations would result in an increase in Earth’s surface temperature in that area?
1, 2, 3
2, 3, 5
3, 4, 5
1, 4, 5
Answer:
2, 3, 5
Explanation:
on Edgenuity
Answer:
The answer is B: 2,3,5
Explanation:
I hope this helps you
Muscle cells need more energy than other cells in the human body. Which
cell organelle would you expect to find in abundance in these cells? *
Nucleus
O Chloroplasts
O Mitochondria
O Lysosomes
What is the name of the process that is cell division for the cells involved in reproduction (sperm cells in male organisms and egg cells in female organisms)?
Answer: The correct answer is Meiosis
Explanation:
I took the test
Passive transport is the movement of substances across a cell membrane without the use of
Answer:
Image result for Passive transport is the movement of substances across a cell membrane without the use of
Passive transport is a movement of ions and other atomic or molecular substances across cell membranes without need of energy input. Unlike active transport, it does not require an input of cellular energy because it is instead driven by the tendency of the system to grow in entropy.
What do unbalanced trophic levels mean?
Answer:The trophic level of an organism is the number of steps it is from the start of the chain. A food web starts at trophic level 1 with primary producers such as plants, can move to herbivores at level 2, carnivores at level 3 or higher, and typically finish with apex predators at level 4 or 5.
Explanation:
