Answer:
D. It is better for the cell if most molecules are prevented from
entering
Explanation:
What are some of the differences between Eukaryotic and Prokaryotic gene expression? I need several answers.
Answer:
Prokaryotic
Nucleus is absent
Membrane-bound nucleus absent.
One chromosome is present, but not true chromosome plastids
Unicellular
Lysosomes and Peroxisomes absent
Microtubules absent
Endoplasmic reticulum absent
Mitochondria absent
Cytoskeleton absent
Ribosomes smaller
Vesicles present
Golgi apparatus absent
Chloroplasts absent; chlorophyll scattered in the cytoplasm
Submicroscopic in size Flagella is present and made up of only one fiber
Cell wall chemically complexed
Vacuoles absent
Permeability of Nuclear membrane is not present
Sexual reproduction is absent
Endocytosis and exocytosis are absent.
It may have pili and fimbriae.
Eukaryotic
Nucleus is present
Membrane-bound Nucleus is present.
More than one number of chromosomes is present.
Multicellular
Lysosomes and Peroxisomes present
Microtubules present
Endoplasmic reticulum present
Mitochondria present
Cytoskeleton present
Ribosomes larger
Vesicles present
Golgi apparatus present
Chloroplasts present in plants
Microscopic in size, membrane-bound
Cell wall is present in plants and fungi and chemically simpler
Vacuoles present
Permeability of Nuclear membrane is selective
Sexual reproduction is present
Endocytosis and exocytosis occurred
Pili and fimbriae are absent
Say that you look at the nuclei of 100 skin cells taken from the same person. About how many of these skin cells would you expect to be in interphase
Answer:
45 cells would be in the interphase
In the nuclei of 100 skin cells. The number of skin cells would be in interphase is 45.
What are cells?Cells are the key unit of living organisms. The cell divides into many cells through the process of cell division.
Prokaryotic cells are the primitive type of cells that are present only in unicellular organisms, and they do not undergo cell division. These cells do not have true cell organelles and a nucleus, in that DNA is present in coil form in the cytoplasm. They contain ribosomes the organisms are bacteria that contain prokaryotic cells.
Eukaryotic cells are higher cells that contain cell organelles they have to perform various complex functions of large organisms. They have a nucleus which contains DNA or genetic material, it does not have flagella.
Therefore, the number of skin cells in the interphase is 45 cells.
To learn more about cells, refer to the link:
https://brainly.com/question/11977258
#SPJ5
What functions do carrier proteins perform In
active transport?
Answer:
Carrier proteins bound to the molecule, change shape, and transport the molecule through the cell membrane and onto the other side.
In what type of organism is cell differentiation
necessary?
A. prokaryotes
B. kingdom archaebacteria
C. single-celled organisms
D. multi-cellular organisms
why cellular respiration and photosynthesis are a
cycle.
Cellular respiration and photosynthesis are referred to as a cycle because the end product of one process serves as the starting material for the next reaction. During cellular respiration, sugar and water are the starting materials, and carbon dioxide and water are the byproducts. Water and carbon dioxide are the starting material for photosynthesis.
ExplanationA cycle is a series of steps that are repeated, which defines this! :)
Which of the following characters can NEVER be an adaptation?
Answer:
ahh......
where r the options??
Which statement contains inaccurate information about stem cells?
Stem cells are undifferentiated.
Stem cells are specialized.
Stem cells can make more cells of the same type through cell division (potentially indefinitely).
Answer:
The incorrect statement is stem cells are specialized.
Explanation:
By their nature stems cells are unspecialized because they are undifferentiated. This means that they have not yet been assigned a specific role in the body.
Which of the following is a biotic limiting factor? a. Fire b. Earthquake c. Hurricane d. Predators
- BRAINLIEST answerer
I need help with dis one too plz!!!question 5
Explanation:
4) option D
5) option A
HOPE THIS ANSWER HELPS YOU DEAR! TAKE CARE
There are no ____________ in the ____________ , located where the nerve fibers of the ____________ leave the eye and enter the ____________ . Consequently, this region of the retina is commonly called the ____________
There are no PHOTORECEPTORS in the OPTIC DISC located where the nerve fibers of the RETINA leave the eye and enter the OPTIC NERVE. This region is commonly called the BLIND SPOT.
The retina is an important layer of nervous tissue that covers the inside of the eye, in which the sensation of vision initiates.
Photoreceptors are specialized cells within the retina that respond to light stimuli. In the retina, there are two types of photoreceptor cells: cones and rods.
The blind spot is a small portion of the visual field of the eye that localizes in the optic disk within the retina.
There are no rods or cones (i.e. photoreceptor cells) within the optic disk.
Learn more in:
https://brainly.com/question/1163189
so how many eyes do a dog and cat have
Answer:
i think its 2
dog have 2 eyes and cat also have 2 eyes
The period of revolution of the earth is called a ?
Orbit
Day
Year
Month
Answer:
Explanation:
A year is defined as the time it takes a planet to complete one revolution of the Sun, for Earth this is just over 365 days. This is also known as the orbital period. Unsurprisingly the the length of each planet’s year correlates with its distance from the Sun as seen in the graph above.
Answer:
a year
Explanation:
The amount of time it takes for a single trip around the sun is called a period of revolution. The period for the Earth to revolve around the sun is 365.24 days or one year.
hope this helps :)
the cell that is infected by a virus is called
Answer:
Via cytotoxic cells. When a virus infects a person (host), it invades the cells of its host in order to survive and replicate. Once inside, the cells of the immune system cannot 'see' the virus and therefore do not know that the host cell is infected.
Explanation:
Complete the Punnett square
1) BbEE
2) BbEe
3) BbEe
4) bbEe
The Punnett square is a diagram used to predict the genotypes of a particular breeding / etc. For example, in the top left BE and BE becomes BBEE because you take both letters and put them together. Here, the Bs will go first and the Es. In the one to the right of that, Be and BE becomes BBEe as you put the Bs and Es in order, but you also have to make sure that lowercase bs go after uppercase bs, and etc.
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather
WHAT IS THE ROLES DOES THE CYTOSKELETON PLAY IN LIVING CELL
Answer:
.
Explanation:
The cytoskeleton is responsible for contraction, cell motility, movement of organelles and vesicles through the cytoplasm, cytokinesis, establishment of the intracellular organization of the cytoplasm, establishment of cell polarity, and many other functions that are essential for cellular homeostasis and survival.
The Forensic Anthropology Facility was founded by whom?
Generalized global air circulation and precipitation patterns are caused by ________.
A. solar radiation that warms moist air masses near the equator, which then cool and release precipitation as they rise, and then, at high altitude, move north or south of the tropics and sink back to the surface as dry air masses
B. air masses that are dried and heated over continental areas, which then rise, cool aloft, and descend over oceanic areas, followed by a return flow of moist air from ocean to land, delivering high amounts of precipitation to coastal areas
C. polar, cool, moist, high-pressure air masses from the poles that move along the surface, releasing precipitation along the way to the equator, where they are heated and dried
D. solar radiation that warms dry air masses at the poles, causing them to sink toward the tropics, gain moisture, and then release it as precipitation.
Answer:
option B is the right answer
Generalized global air circulation and precipitation patterns are caused by air masses that are dried and heated over continental areas, which then rise, cool aloft, and descend over oceanic areas, followed by a return flow of moist air from ocean to land, delivering high amounts of precipitation to coastal areas. The correct option is B.
What is differential heating?The reason we have different weather patterns, jet streams, deserts, and prevailing winds is due to global atmospheric circulation caused by the rotation of the Earth and the amount of heat received by different parts of the globe.
The earth's polar regions are both cold, owing to the fact that they receive far less solar radiation than the tropics and mid-latitudes.
Air masses that are dried and heated over continental areas cause generalized global air circulation and precipitation patterns.
This is then rise, cool aloft, as well as descend over oceanic areas, accompanied by a return flow of humid air from ocean to land, achieving higher amounts of precipitation to coastal areas.
Thus, the correct option is B.
For more details regarding differential heating, visit:
https://brainly.com/question/28033741
#SPJ6
The left cerebral hemisphere controls the muscles on the right side of the body and vice versa. Which pathway generalization best explains this phenomenon
Given our understanding of neuroanatomy, we can confirm that the left cerebral hemisphere controls the muscles on the right side of the body and vice versa due to the motor decussate of the cortical spinal pathway.
A decussate in regards to the nervous system is described as when the nerve fibers cross from one side of the central nervous system to the other. The decussate in question corresponds to the cortical spinal motor decussate.
The cortical spinal pathway is the nerve pathway that is in charge of muscular control and therefore is the pathway that is responsible for the phenomenon described in the question.
To learn more visit:
https://brainly.com/question/7283580?referrer=searchResults
You are competing at a high school gymnastics meet. Your floor routine music begins
and you start running in a positive direction into a tumbling pass, starting from rest.
At 2s, your velocity is 4.5m/s. Calculate your acceleration.
Your Answer:
Answer
units
Answer:
2.25 m/s^2
Explanation:
Acceleration is the speed which you are increasing by per second. Therefore to find acceleration all you need to do is divide the change in velocity (4.5) by the time (2). Your units than become (m/s)/s or m/s^2.
How do the baby’s respiration and circulation change when the baby is born?
Answer:
Oxygen and carbon dioxide flow through the blood in the placenta. Most of it goes to the heart and flows through the baby's body. At birth, the baby's lungs are filled with fluid. ... Increased oxygen in the lungs causes a decrease in blood flow resistance to the lungs.
4. What factors might affect bone strength?
Answer:
Bone strength is influenced by changes in the structure (size and shape) and composition [cortical (compact) bone, trabecular (sponge-like) bone, amount of cartilage] of the bone. 6 A high peak mass at a young age and the decrease of bone loss at a later age are two ways to reduce osteoporosis risk.
Explanation:
Answer:
Bone need enough Calcium
Explanation:
The amount of calcium in your diet. A diet low in calcium contributes to diminished bone density, early bone loss and an increased risk of fractures.
Physical activity. ...
Tobacco and alcohol use. ...
Sex. ...
Size. ...
Age. ...
Race and family history. ...
Hormone levels.
Please answer
Right the kingdoms for different categories for example if eubacteria is prokaryotic or eukaryotic.
Eubacteria: Prokaryotic - Single Celled - Consumers
Protista; Eukaryotic - Multicellular - Consumers
Fungi: Eukaryotic - Multicellular - Consumers
Plantae: Eukaryotic - Multicellular - Producers
Animalia: Eukaryotic - Multicellular - Consumer
air is made of ____and ____
Answer:
The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen.
Answer:
air is made of nitrogen and oxygen
Psych-
Causal attribution theories generally try to explain how we:
1) are influenced by others
2) predict how others will behave based on their attitudes
3) change our attitudes toward other people
4) determine the causes of others' behavior
5) relate to and interact with other people
Causal attribution theories generally try to explain how we determine the causes of the others' behavior based on personal or situational attributions.
This theory was developed by Horald Kelly in 1967, and explains how people attribute the behavior of others according to dispositional (internal) and situational (external) factors.
Dispositional factors are those based on internal characteristics, such as effort and skill. Situational factors, on the other hand, are environmental and external to the individual, such as luck and task difficulty.
Therefore, according to theory we are more likely to attribute the cause of the behavior of others to factors that most coincide with the action.
Learn more here:
https://brainly.com/question/7338026
what is a phosphorelated nucleoside?
Answer:
Nucleosides can be phosphorylated by a displacement reaction between phosphate and an electrophilic carbon of a nucleoside. To render a carbon electrophilic, the hydroxyl group must be converted into a leaving group of some kind (e.g., a halogen or sulfonate ester)
Explanation:
Why is grafting considered asexual reproduction and not sexual
reproduction?
Answer:
The reason that grafting is not considered sexual is because there is no conjoining of male and female germ cells. (there is no germination like how sperm and egg cells do). So its considered asexual
Explanation:
can some one help me with this please
Answer:
7 answer is b
8 answer is d
9 answer is a
Explanation:
Answer:
B
D
A
Explanation:
:)
I need help question 14
Answer:ok
Explanation:
How does respiration impact the amount of carbon in the atmosphere?
The process of respiration produces energy for organisms by combining glucose with oxygen from the air. During cellular respiration, glucose and oxygen are changed into energy and carbon dioxide. Therefore, carbon dioxide is released into the atmosphere during the process of cellular respiration.
True or False: Because the microbiome is important for fitness, many organisms have developed specific strategies for passing the microbiome on to progeny.
The statement 'because the microbiome is important for fitness, many organisms have developed specific strategies for passing the microbiome on to progeny' is TRUE. It is natural selection in action.
According to the evolutionary theory proposed by Darwin, natural selection is the mechanism by which species change (evolve) to adapt to particular environmental conditions.
In this case, the microbiome represents an evolutionary adaptive mechanism, thereby natural selection will tend to favor individuals that have a beneficial microbiome.
In consequence, individuals having a beneficial microbiome will have more chances to reproduce and survive (i.e., they have higher adaptive fitness), thereby they also have more chances to pass this adaptive trait to the next generation.
Learn more in:
https://brainly.com/question/1657375
