Answer:
The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment. The cell membrane consists of a lipid bilayer that is semipermeable.
Explanation:
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how the different biotic component interact among themselves?
Answer:
In general, abiotic factors like rock, soil, and water interact with biotic factors in the form of providing nutrients. Just as humans mine mountains and cultivate soil, rock and soil provide resources for plants, and plants cycle the nutrients through so they (usually) end up back in the ground where they began.
How many nucleotides are present?
Answer:
C. 24
Explanation: I had that question on a test before.
What is the functional role of the t tubules?.
The transverse tubules (t-tubules) with regards to the cardiac muscles are invaginations of the surface membrane of cardiac ventricular myocytes
With regards to skeletal muscles, are located in the space between the two Sarcoplasmic reticulum (SR) cisternae.
In Skeletal muscles, they are tightly associated with the SR controlling the entry of action potentials into interior of muscle fiber. In cardiac muscles, these t-tubules which are rich in ion channels and are important determinant of cardiac cell function, that are important for excitation–contraction coupling, ensuring spatially synchronous Ca2+ release throughout the cell.Learn more about t-tubules: https://brainly.com/question/6763078
Which of the following would be true of heterochromatin but not of euchromatin?
A. It includes DNA primarily found in expressed genes.
B. It is accessible to enzymes needed for gene expression.
C. It appears more pale when observed microscopically.
D. It remains tightly coiled at the G1 phase.
I would choose the option D.
D. It remains tightly coiled at the G1 phase.
CAN SOMEONE HELP WITH THIS PLSSSS?!?!
Answer:
b is yes
Explanation:
there are 3 chromosomes in 21 instead of just 2
Answer:
B. Yes
C. 21
D. Trisomy 21
E. Down Sydrome
what are 2 major sources of atmospheric carbon?
Answer: natural and human activities. Natural sources of carbon dioxide include most animals, which exhale carbon dioxide as a waste product.
Explanation:
Match each cranial nerve with the correct label.
Answer:
yes. the photo is correct
Explanation: post protected
Who first recognized the cell as the universal unit of life
Answer:
Credit for developing cell theory is usually given to three scientists: Theodor Schwann, Matthias Jakob Schleiden, and Rudolf Virchow. In 1839, Schwann and Schleiden suggested that cells were the basic unit of life.
Someone plz help me :(
Answer:
B
Explanation:
endoplasmicreticulum defination
Answer:
Explanation:
a network of membranous tubules within the cytoplasm of a eukaryotic cell, continuous with the nuclear membrane. It usually has ribosomes attached and is involved in protein and lipid synthesis.
Answer:
Explanation:
a network of membranous tubules within the cytoplasm of a eukaryotic cell, continuous with the nuclear membrane. It usually has ribosomes attached and is involved in protein and lipid synthesis.
hel pls i really need it im in a assignment pls PLS PLS PLS AND THANK YOU
Answer:
Trait - A
Gene - E
Allele - B
Chromosome - C
Hope this helps!
What is speciation? in your own words
Answer:
A new species being created through evolution
A scientist conducts an experiment on a virus and a species of bacteria. The virus and the bacteria are put in the same Petri dish for 24 hours and provided a food source. The scientist notices that the number of bacteria increases significantly, whereas the virus makes no change
Answer:
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Explanation:
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In an experiment, where both bacteria and virus are put in a petri dish for 24 hours and provided a food source, then it is observed that the number of bacteria increases significantly whereas the virus show no change as they could not divide outside the living cell.
What are Viruses?
Viruses are the acellular organisms which are mostly pathogenic in nature. Viruses are made up of genetic material which could be DNA or RNA and a protein coat which protects the genetic material.
Viruses are the microscopic organisms which are mostly pathogenic in nature. Viruses does not have the enzymatic machinery required for their division and development. Thus, it depends upon other organisms cellular machinery for their growth and division.
In the petri dish with sufficient amount of nutrients, the bacteria grows in number as they can divide on their own however the viruses cannot increase in number as they can divide only by entering and using the cellular machinery of a living organism.
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which of the following is a type of mineral
1. coal
2. concrete
3. steel
4.quartz
Answer:
4. quartz
Explanation:
A mineral is a naturally occurring, inorganic substance that has a crystalline structure. Both concrete and steel are not naturally occurring. They are man-made. Additionally, while coal is naturally occurring, it is a rock, and therefore does not have the needed crystalline structure.
Which of Kepler's laws states that planets travel in an ellipse with the Sun at one focus?
Answer:
Kepler's first law
Explanation:
Which organisms release carbon dioxide during cellular respiration?
O only producers
O only consumers
✅both producers and consumers
***** c is the correct answer.
Answer:
All plants and animals
Explanation:
Answer:
c
Explanation:
choose the correct answer
Answer:
the last option
Explanation:
just a guess
What are some ways that your body may need to create new cells?
Answer: First, existing cells can divide via a fairly simple process called mitosis. During mitosis, a parent cell splits into two new cells. These new cells, called daughter cells, are basically copies of the original cells. The second way that cells are created is from stem cells.
Explanation:
A horse left the stable 10 minutes ago and is now running toward a river at 172metersperminute. If its velocity remains constant, how much time will it take the horse to run 3,010meters?
which gas in earth’s atmosphere helps living things make proteins?
Why do plants have more dead tissues compared to animals
Answer:
They have more dead tissues because it is needed for strength in order to stand upright and withstand most unfavourable environmental factors. skeleton to animals is like dead tissues to plant.
DO NOT COPY AND PASTE IT WILL BE A ZERO
What are a few ways humans are having a negative effect on aquatic ecosystems?
What would you do to solve the issue? (Answer in complete sentences) 4-5 Sentences
Answer:
Aquatic systems are negatively affected by urban growth runoff. Here are few examples: Oil Spill, litter, Overfishing, Carbon Emission and Habitat destruction
give ten reasons why it is difficult to decide whether viruses are living organisms
Answer:
Viruses are not made out of cells, they can't keep themselves in a stable state, they don't grow, and they can't make their own energy. Even though they definitely replicate and adapt to their environment, viruses are more like androids than real living organisms.
Explanation:
EARTH SCIENCE a student conducts an experiment to see how music affects plant growth the student obtains four identical plants each one is potted in the same type of soil and receives the same amount of sunlight and water each day plant a listens to classical music for three hours each day plant b listens to rock music for three hours each day plant c listens to country music for three hours each day plant d does not listen to any music at all. Based on the experiment in the scenario which visual aid would be most helpful in showing the change in the plants height over time? A. A pie chart B. A timeline C. A bar graph D. A line graph
Answer:
A time line would be my option
A line graph will be more helpful in showing the change in the plants height over time. The correct option is D.
What is a line graph?A line graph, also known as a line plot or a line chart, is a graph that connects individual data points with lines.
A line graph depicts quantitative values over a given time period. Line graphs are commonly used in finance to depict the historical price action of an asset or security.
Line graphs are used to chart changes over short and long time periods. Line graphs are preferable to bar graphs when there are minor changes.
Line graphs can also be used to compare changes in more than one group over the same time period.
A simple line graph is a graph that is made up of only one line.
Thus, the correct option is D.
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How do cats purr? Why do they purr?
Answer: While purring is thought to be partly voluntary and partly instinctive, research suggests that cats can purr for various reasons, using the soft rumble as a way of communicating and as a form of self-soothing or even healing. This is why cats will often purr when they're injured, or after a stressful event.
Explanation:
They pur cause they r happy
How do you think heredity and environment affect or connect to defects?
Answer:
Like gender and temperature, influence gene expression. Similarly, drugs, chemicals, temperature, and light are among the external environmental factors that can determine which genes are turned on and off, thereby influencing the way an organism develops and functions.
A team of scientists is excavating fossils from a rock layer. They discover fossils of trilobites, which are useful as index fossils. Which information about the rock layer is provided by the trilobite fossils
Answer:
The approximate or relative ages of the rocks and the fossils they contain.
The discovery of trilobite fossils in a rock layer provides important information about the age, environment, and depositional history of the layer that is in Option A, as the information can be used by geologists and paleontologists to better understand the geological history.
What are fossils?Trilobites are useful as index fossils because they are extinct and had a wide geographic distribution during the Paleozoic Era. The presence of trilobites in a rock layer indicates that the layer is from the Paleozoic Era, which spanned from about 541 million to 252 million years ago. Trilobites were marine organisms that lived in a variety of habitats, from shallow seas to deep ocean environments. The discovery of trilobite fossils in a rock layer suggests that the layer was deposited in a marine environment. The presence of trilobites in a rock layer can also provide information about the depositional history of the layer.
Hence, the discovery of trilobite fossils in a rock layer provides important information about the age, environment, and depositional history of the layer that is in Option A.
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question is incomplete, complete question is below
A team of scientists is excavating fossils from a rock layer. They discover fossils of trilobites, which are useful as index fossils. Which information about the rock layer is provided by the trilobite fossils
A)age, environment, and depositional history
B)skin
The earth's differentiation and size were significant factors for life on Earth because Earth's composition and gravitational attraction
a.. keep the moon and sun in orbit
b. keep people grounded
c.. helped to create and retain Earth's atmosphere
d.create and retain internal heat
Answer:
C
Explanation:
¿Qué le pasaría a cualquier especie si no pudiera heredar las características que permiten la supervivencia y adaptación?
Answer:
It would die ,without the needed skills and characteristics to live in a specific environment
if an atom contains 8 protons and 10 neutrons, what is its atomic number?
Answer:
The atomic no. is 8
Explanation:
# of protons = atomic number.
In this case the atom is Oxygen
An oxygen ion has 8 protons and 10 electrons. The number of protons tells us the identity of the element because the number of protons is the same.
So, fluorine has 8 protons and 10 neutrons.
