Answer:
1. A person sitting on a chair.
2. Water in a bucket.
3. Bus without a driver.
4. Electric fan without electricity.
5.Car without engine.
If a cell has 24 pairs of chromosomes in its diploid state, how many
chromosomes will it have after Meiosis 2?
A. 12
B. 24
C.48
D. 6
Answer:
option A is correct that is 12
Explanation:
meiosis occur in two phases in first phase DNA replication occur and amount of DNA become doubled without any change in the chromosome number and two daughter cell (each 2 n)are formed.
now in stage 2 each daughter cell undergoes mitosis with the formation of two cells with half chromosomes(n)
now 2n=24
n=24/2 =12
after meiosis stage 1...........two daughter cell each with 24 chromosomes
stage 2 .............each daughter cell form two grand daughter cell each with 12 chromosomes
net result.......4 daughter cell each with 12 chromosome(assuming cell as a diploid cell)
If a cell has 24 chromosomes before cell division then the daughter cell resulting from the mitotic division will have 24 chromosomes while the daughter cell resulting from the meiotic division will contain 12 chromosomes each.
The answer is option A.
What are meiotic and mitotic cell divisions?There are sorts of cell departments: mitosis and meiosis. most of the time whilst humans discuss “cellular division,” they suggest mitosis, the procedure of making new frame cells. Meiosis is the sort of cell division that creates egg and sperm cells. Mitosis is an essential technique for lifestyles.
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which could describe the chemical reaction that is shown
Answer: dehydration of proteins.
Explanation:
Carbohydrates are an example of a biological macromolecule. The structure of a biological macromolecule affects the function.
Identify the type of chemical bond in carbohydrate polymer. Describe the directionality in carbohydrates and explain how changes in the structure can affect the function.
Answer:
The functional groups determine the shapes of macromolecules and this in turn determines their functions.
Functional groups affect the bonds that hold a macromolecule together. For example, the ring forms of glucose in starch and cellulose have different configurations. As a result, cellulose and starch serve different purposes.
Functional groups also affect the polarity of the bonds. Lipids consist of hydrophilic heads (red) and hydrophobic tails (black and white). This characteristic of lipids allows them to form bilayers, which serve as membranes of cells.
Proteins have complex structures caused by interactions between the functional groups. A change of a single amino acid can make a major change in the function of a protein.
Explanation:
what is the volume of a cylinder if the height is 6 cm and the radius is 4 cm?
Answer:
v = πr²h
v = 3.142*4²*6
v = 301.71cm³
Explanation:
volume of the cylinder = πr²h
Use the image to answer the question below: Using the model presented, what process is being depicted? A) An electrical signal being converted to a chemical signal B) Salutatory conduction C) The transfer of neurotransmitters between axons D) The path of a steroid hormone
Answer:
option A is correct because of it is undergoing a convertion
Select the correct answer from each drop down menu.
During an experiment, readings for blood pressure in a person's body were found to be constant. However, when measured by a
different blood pressure cult, the readings differed by 15 points for each reading. This difference indicates that the results are
but not
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dimentum. All rights reserved
Answer:
The results are precise but not accurate
Explanation:
Precision is the term that refers to the degree of agreement between measured results. This means that the measurements of the finished system are very similar and with equal differences, under the same conditions.
An example of this is the results shown in the question above, which are very similar. In addition, these results do not have the "real and absolute value" and therefore are not accurate.
ANSWER ASAP PLEASEEEEEE!!!!!! ILL GIVE 100 POINTS!!
Answer:
d
Explanation:
Answer: D, I believe.
Explanation:
Which receptor, when activated, most likely prompts the production of saliva?
A. auditory receptors
B. optic receptors
C. skin receptors
D. taste receptors
Answer:
[tex]\large \boxed{\sf D. \ taste \ receptors}[/tex]
Explanation:
When activated, the receptor most likely prompting the production of saliva is the taste receptor. When food enters the mouth, the salivary glands produce the saliva upon the sensation of taste.
Answer:
Taste receptors.
Explanation:
When activated, the receptor most likely prompting the production of saliva is the taste receptor. When food enters the mouth, the salivary glands produce the saliva upon the sensation of taste. The secretion of saliva (salivation) is mediated by parasympathetic stimulation; acetylcholine is the active neurotransmitter and binds to muscarinic receptors in the glands, leading to increased salivation.
Why is the communication results circle linked to the circle labeled science and society
Answer:
Because these circles have three factors that are directly interconnected.
Explanation:
As you know, communication is one of the primary factors for the creation and maintenance of societies. Societies grow and develop with communication as a starting point and a link between people and the actions that a society lives.
Science, in turn, is also directly influential in the creation and development of society, since it is a transforming factor that shapes society through its constant evolution.
As science evolves, society changes and communication must accompany these changes, so that both society and science continue to exist.
For this reason, we can say that the circle of communication results is linked to the circle called science and society, because these factors are directly interconnected.
The operation of the sodium-potassium pump moves ________. A) sodium and potassium ions into the cell B) sodium and potassium ions out of the cell C) sodium ions into the cell and potassium ions out of the cell D) sodium ions out of the cell and potassium ions into the cell
operation of SODIUM-POTASSIUM PUMP moves sodium ions out of the cell and potassium ions into the cell. The correct option is D.
When a cell membrane moves molecules or ions against a concentration gradient or against an electrical or pressure gradient, the process is called ACTIVE TRANSPORT. Different substances that are actively transported include:
--> sodium ions,
--> potassium ions,
--> calcium ions and
--> some amino acids.
There are two types of active transport which are divided according to the energy that is used to cause the transport. They include:
--> primary and
--> secondary active transport.
PRIMARY ACTIVE TRANSPORT
A typical example is the SODIUM-POTASSIUM PUMP( Na+ - k+). This is a transport process that pumps sodium ions outward through the cell membrane of all cells and at the same time pumps potassium ions from the outside to the inside. This pump helps to:
--> maintain the sodium and potassium concentration differences across the cell membrane
--> establish a negative electrical voltage inside the cells.
The mechanism or OPERATION of the pump involves the following steps:
--> two potassium ions bind on the outside of the carrier protein and three sodium ions bind on the inside,
--> ATpase of the carrier protein cleaves one molecule of ATP, splitting it to Adenosine diphosphate (ADP) and liberating a high-energy phosphate bond of energy.
--> this liberated energy then causes a chemical and conformational change in the carrier protein,
-->this leads to the extruding of three sodium ions (3Na+) to the outside and two potassium ions (2K+) to the inside.
Therefore in the operation of SODIUM-POTASSIUM PUMP moves sodium ions out of the cell and potassium ions into the cell. The correct option is D.
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what is homostatis in biology
Answer:
the tendency toward a relatively stable equilibrium between interdependent elements, especially as maintained by physiological processes.
It means “same”, and “steady”, and it refers to any process of organisms that live under actively maintain fairly stable conditions necessary for survival.
How are photosynthesis and cellular respiration related?
A. The equations for photosynthesis and cellular respiration are opposites of each other
B. Photosynthesis provides the energy for cellular respiration
C. Both processes take place in mitochondria
D. Only plants perform photosynthesis, and only animals perform cellular respiration
Answer:
I think it is B. Photosynthesis provides the energy for cellular respiration
If it isn't I'm super sorry!
Explanation:
Considered the "Command Center for the Endocrine System", the ______________ is a major link between the nervous and endocrine system as it is a major regulatory center in the nervous system, as well as a crucial endocrine gland that can synthesize at least nine different hormones.
Answer:
"Command Center for the Endocrine System", the hypothalamus is a major link between the nervous and endocrine system as it is a major regulatory center in the nervous system, as well as a crucial endocrine gland that can synthesize at least nine different hormones.
3. A heat insulating substance is;
Plastic, rubber, wood, and ceramics
What are the three basic parts of the cell theory?
Answer:
Answer
Explanation:
All living things are composed of cells.
Cells are the basic units of structure and function for living things.
All cells come from pre-existing cells. Also, organisms grow by “adding on more cells” NOT by increasing the size of their cells.
The three basic parts of the cell theory are:
All living things are made of cells.
Cells come from preexisting cells.
All cells have the same basic parts.
How do we explain?Cells are the basic unit of life. All living things, from the smallest bacteria to the largest redwood tree, are made up of cells.
Cells are not created spontaneously. All cells come from the division of preexisting cells.
Despite their great diversity, all cells have the same basic parts, including a plasma membrane, cytoplasm, and DNA.
The cell theory was first proposed by Matthias Schleiden and Theodor Schwann in the 1830s. It has since been supported by a vast body of evidence from cell biology. The cell theory is one of the most important and fundamental concepts in biology.
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what mode of nutrition is house fly
Answer:
Parastic
Explanation:
Explanation:
The mode of nutrition in house fly is known as SCRAPING
Forensic anthropologists are trying to determine the age of a male skeleton that has been uncovered. They conclude that he must have been between 16 and 19 judging by the measurement of his
ribs
clavicle
pelvic bone
tibia
Arctic sea ice has declined over the past few decades causing water levels to increase. This is an interaction of which two spheres?
Answer:
Cryosphere and Hydrosphere
Explanation:
The Cryosphere refers to the frozen water bodies on earth. This includes glaciers, icebergs, ice sheets and frozen water surrounding the Arctic and Antarctica.
The Hydrosphere refers to all the water bodies on Earth, including rivers, streams, lakes, and ponds.
Answer:
Cryosphere and Hydrosphere
Explanation:
YOUR WELCOME
The plateau phase of population growth is best described as: A. The population stops growing because they moved into the plateau environment at this stage. B. The population pauses in its growth after a natural disaster before growing again. C. The population moves onto a large, raised, flat area called a plateau for protection from predator. D. The population stops growing because the environment has reached its carrying capacity.
Answer:
C. The population moves onto a large, raised, flat area called a plateau for protection from predator.
Explanation:
The plateau phase of population growth indicates that the population has stopped growing as the environment has reached its carrying capacity.
What is the plateau phase in population growth?The population after going through different phases eventually reaches the plateau phase where the growth of the population stops or become constant. This is the outcome of the natality rate becoming equivalent to the mortality rate.
This occurs as the resources in the environment become less or scarce as well as there is an elevation in predators and parasites. These are considered as limiting factors to the growth of population. This makes the population number relatively stable. With the limitation in the resources it can be said that the environment has attained its carrying capacity.
Thus, the correct statement is option D.
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What is a protein that is the main component of the thick filaments in muscle fibers and is responsible for muscle contraction?
Answer:
Myosin
Explanation:
Two of the important proteins are myosin, which forms the thick filament, and actin, which forms the thin filament. Myosin has a long, fibrous tail and a globular head, which binds to actin. The myosin head also binds to ATP, which is the source of energy for muscle movement
Answer: actin
Explanation:
which structure will be found in the nucleus of body cells in a woman?
a) x allele
b) x chromosomes
c) y allele
d) y chromosome
The x chromosomes are found in the nucleus of body cells in a women. Thus option b is correct.
What are chromosomes?Chromosomes are defined as a thread like structure located in the nucleus of every cell in our body and are formed of tightly coiled DNA surrounding proteins.
Chromosomes plays very important role in human body.
The primary purpose of chromosomes is to transport DNA and genetic information from parents to offspring.
It play a vital role during cell division.
They keep DNA from becoming twisted and damaged.
There are basically two types of chromosomes.
AutosomesSex chromosomesThus, the x chromosomes are found in the nucleus of body cells in a women. Thus option b is correct.
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In response to increased levels of aldosterone, the kidneys produce In response to increased levels of aldosterone, the kidneys produce urine with a lower concentration of sodium ions. urine with a higher concentration of sodium ions. urine with less glucose. a larger volume of urine. urine with a lower concentration of potassium ions.
Answer:
The correct answer is urine with a lower concentration of sodium ions.
Explanation:
A hormone produced in the cortex or the outer section of the adrenal glands, which are located above the kidneys is known as aldosterone. The hormone plays an essential function in regulating the blood pressure primarily by functioning on the organs like colon and kidney to enhance the reabsorption of sodium or salt into the bloodstream and to enhance the concentration of potassium excreted in the urine.
Along with sodium, the hormone also works to reabsorb more concentration of water, which further increases the volume of blood and thus the blood pressure. Therefore, with the increase in the levels of aldosterone, the kidneys generate urine with a lower concentration of sodium ions.
In response to increased levels of aldosterone, the kidneys produce urine with a higher concentration of sodium ions. Therefore, option B is correct.
Aldosterone is a hormone produced by the adrenal glands, specifically in the zona glomerulosa of the adrenal cortex. It plays a crucial role in regulating sodium and potassium levels in the body.
When aldosterone levels increase, such as in response to low blood sodium levels or stimulation by the hormone angiotensin II. Then, it acts on the cells of the distal convoluted tubules and collecting ducts in the kidneys.
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What is:
a) Metamorphosis
b) Photosynthesis
c) Plant cycle
d) Absorption
e) Menustration
f) Sex.
Accurate answers please.
Answer:
a) Metamorphosis is a process by which an animal develops after birth including change in body structure.
b) Photosynthesis: this is the process used by plants to make their food.
c) Plant cycle: the generation and process/the adopted way in which plants grow.
d) Absorption is the ability for a light object/surface to be able to soak/take in something.
e) This is when a woman sees her monthly cycle/discharge of blood in a woman.(stage of puberty).
f) Sex is when someone have sexual intercourse/gender.
Explanation:
Hope they help.
A person is dehydration and they start to bleed from their nose. But they're bleeding from only one nostril. Why?
The lining of your nose contains many tiny blood vessels that lie close to the surface and are easily damaged.
The two most common causes of nosebleeds are:
Dry air — when your nasal membranes dry out, they're more susceptible to bleeding and infections
Nose picking
Which of the following statements are true regarding science?
All of the above are correct
Scientists collect and organize information in a careful, orderly way, looking for patterns and
connections between events.
Scientists propose explanations that can be tested by examing evidence.
Science deals with the natural world.
Answer:
All of the above are correct
The hormone oxytocin is released to increase contractions during childbirth. The pathway is activated with pressure from the baby's head against the opening of the uterus. This is an example of
positive feedback, because the response increases the rate of the organism's metabolism
negative feedback, because the response decreases the rate of the organism's metabolism
positive feedback, because the response intensifies the original stimulus
negative feedback, because the response intensifies the original stimulus
Answer:
positive feedback, because the response intensifies the original stimulus
Explanation:
The release of it is increasing contractions making it positive
The hormone oxytocin is released to increase contractions during childbirth, and the pathway is activated with pressure from the baby's head against the opening of the uterus, so it is a positive feedback because the response intensifies the original stimulus that is present in the third option.
What is the importance of the hormone oxytocin in childbirth?Oxytocin, a hormone that plays an important role in the process of childbirth, is produced in the posterior pituitary during labor, and oxytocin is responsible for stimulating contractions of the uterus, which help to push the baby through the wall of the uterus. Oxytocin makes the bond between a mother and her newborn baby, as it is released in large amounts during childbirth and breastfeeding and helps to create a strong emotional bond.
Hence, the hormone oxytocin is released to increase contractions during childbirth, and the pathway is activated with pressure from the baby's head against the opening of the uterus, so it is a positive feedback because the response intensifies the original stimulus that is present in the third option.
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Which type of model is represented in the following image?
a
Computer simulation
b
Graph
с
Map
d
Small-scale object
Answer:
d
Explanation:
Its a map but showing the northern, southern, Eastern, and Western province of the earth.
What molecule is required each time the myosin head detaaches from one site and reattaches to another
Answer:
The adenosine triphosphate (ATP) molecule
Explanation:
The actin filaments are often associated with myosin to produce muscle contraction. These myosin filaments are considered to be 'molecular motors' capable of converting the chemical energy contained in the ATP molecule to mechanical energy, thereby producing cell movement. Myosin heads bind to actin filaments in order to generate a power stroke. When the adenosine triphosphate (ATP) molecule binds to myosin, the myosin head detaches to the actin filament. During this process, the ATP molecule is broken down and then the released energy is used by the myosin filament to return to its original position.
Besides plants, what other factor distinguishes one biome from another biome?
(A) the number of plant species in the biome
(B) the variety of animal species
(C) average temperatures and precipitation
(D) geographic location
A cell pumps hormones out into the bloodstream; a process that requires energy. If 4 ATP were converted to ADP, how much energy was used?
A. 4 kJ
B. 30.5 kJ
C. 122 kJ
D. 1600 kJ
It is 122KJ of energy is used from the conversion of ATP to ADP because hydrolyses of 1 mole of ATP requires 30.5KJ of energy. Therefore, if 4 ATP is hydrolyses, it will be 4× 30.5=122KJ. ... This energy is given out because there is cleavage of high energy phosphate bond in ATP while converting it into ADP.
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