Answer:
Option 4: hormones; neurotransmitters.
Explanation:
Hormones are the body's chemical messengers that are released from the hypothalamus, the gonads, and the adrenal cortex. They are released into the bloodstream where they are transported to target organs and tissue.
Neurotransmitters are chemicals released by neuron which stimulates other neurons, muscle cells and gonad cells allowing for the passage of impulse from one cell to another one.
The Frank-Starling law of the heart states that stroke volume is proportional to ________.
Answer:
end diastolic volume
Explanation:
The Frank-Starling Law states that the stroke volume of the left ventricle will increase as the left ventricular volume increases.
In which would you be most likely to find plants and animals that are adapted to survive in extremely cold temperatures
This question is incomplete because part of the content is missing; here is the complete question:
In which biome would you be most likely to find plants and animals that are
adapted to survive in extremely cold temperatures?
A. Desert
B. Savanna
C. Rain forest
D. Tundra
The correct answer is D. Tundra
Explanation:
Tundra biome is one of the coldest biomes on Earth, indeed, the temperature in this biome can be as low -50° C in some zone. At this extremely cold temperature, animals and plants have adaptations to survive in these climatic conditions. For example, animals such as the arctic hare or the polar bear that are found mainly in the tundra biome have thick fur that helps them keep body temperature despite low temperatures in their environment. Thus, the biome in which you would most likely find species adapted to extremely cold temperatures is the Tundra.
The diagram below shows some ocean floor features. (4 points) Which of these statements is correct about the feature labeled A in the diagram? a. It is an underwater basin caused by subduction. b. It is a deep trench located on both sides of a mid-ocean ridge. c. It is an area where sea floor spreading occurs. d. It is the portion of the ocean floor where old crusts are eroded.
Answer:
it is a deep trench located on both sides of a mid_ocean ridge
Biodiversity can be studied at which of three levels?
Answer:
genetic diversity, species diversity, and ecosystem diversity.
Explanation:
Answer:
Biodiversity is usually explored at three levels - genetic diversity, species diversity and ecosystem diversity.
Explanation:
Match each image with the life function the organism is performing.
Summarize the role of bacteria in keeping the nitrogen cycle balanced.
Answer:
dear user
the answer is given above
An athlete has an enhanced genotype for carbohydrate utilization, however they feel sluggish after they eat carbohydrates, which of the following should the trainer consider?
a. The type of carbohydrates being consumed
b. Decrease the carbohydrate intake
c. Add more caffeine to the daily diet
d. They are likely over trained and tired
Answer:
Carbohydrates’ bad reputation ignores the benefits they can offer
sooo i would say it is B. i think....
explain why all the offspring in the F1 generation were yellow instead of half being yellow and half green, or some other mix of the colors. Hint: Remember that Mendel coined the terms dominant and recessive.
Answer:
Yellow is a dominant trait.
Explanation:
There are dominant alleles and recessive ones. Say Y is a dominant allele and y is a recessive one. YY makes yellow, Yy makes yellow, and yy makes green. It takes just one dominant allele to make a phenotype (physical traits) express it. Look at the photo to help guide you. Using a punnet square you can find that both parents give a dominant allele and it only takes one.
Hope this helps
What is an advantage of nuclear power plant over coal power plant?
cost and lack of nuclear waste
Explanation:
The short-term controls of blood pressure, mediated by the nervous system and bloodborne chemicals, primarily operate via all but which of the following?
a. reflex arc associated with vasomotor fibers
b. reflex arcs involving baroreceptors
c. altering blood volume
d. centers in the medulla oblongata and the pons
Answer:
c. altering blood volume
Explanation:
The sympathetic nervous system acts to modulate blood pressure during short-term periods by modifying arterial pressure. The catecholamine hormone levels may be associated with an increase in the blood pressure by narrowing the blood vessels. Catecholamines are hormonal neurotransmitters released by the adrenal glands. These hormones derive from the metabolism of tyrosine amino acids and include, among others, adrenaline, noradrenaline and dopamine.
A portion of the linkage map of chromosome 2 in the tomato is illustrated here. The oblate phenotype has flattened fruit, peach results in hairy fruit (like a peach), and compound inflorescence means clustered flowers.
o(oblate) ci (compound inftluorescence) p (peach)
15 cM 20 cM
Among 1,000 gametes produced by a plant of genotype o ci +/+ + p, what types of gametes would be expected, and what number would be expected of each? Assume that the chromosome interference across this region is 80%.
Answer:
Expected gametes : o+ ci+ p+,o- ci- pi-, o+ci- pi+,o- ci+ pi-, o+ci+ pi-, o- ci- pi+
Explanation:
Genetic distance between genes is equal to the recombination frequency, so the total number of recombinant gametes can find out by multiplying the recombination frequency of both sides to the total number of gametes.
Interference= .80;
Coefficient of incidence
= 1 - 0.80
= 0.20
15cM = 15% recombination,
20cM = 20% recombination.
Then, Number of recombinant offspring
= 15 x1000/100
= 150,
Gametes expected= o+ ci+ p+,o- ci- pi-, o+ci- pi+,o- ci+ pi-, o+ci+ pi-, o- ci- pi+
Which is a disaccharide?
Answer:
Disaccharidases are glycoside hydrolases, enzymes that break down certain types of sugars called disaccharides into simpler sugars called monosaccharides. In the human body.
Explanation:
Disaccharide, also called double sugar, any substance that is composed of two molecules of simple sugars (monosaccharides) linked to each other. ... The three major disaccharides are sucrose, lactose, and maltose.
Three common disaccharides:
#sucrose — common table sugar = glucose + fructose.
#lactose — major sugar in milk = glucose + galactose.
#maltose — product of starch digestion = glucose + glucose.
A disaccharide is a sugar that can be created when two monosaccharides are linked together with glycosydic. Disaccharides are soluble in water and a few examples of this are; maltose, sucrose, and lactose. Finally, they’re also one of four chemical linkings for carbohydrates.
Best of Luck!
Consider that it takes, on average, 24 hours (or 1,440 minutes) for each onion root tip cell to complete the cell cycle. You can calculate the amount of time spent in each phase of the cell cycle form the percentage of cells in that stage.
Percentage of cells in stage X 1,440 minutes = ________ minutes of cell cycle spent in stage.
Answer: Hope this helps you :)
To calculate the time spent on each stage of the cell cycle, we need to know the total time required to complete the cycle and the percentage of cells that are in that stage. Then, take the product of both values.
--------------------
According to the statement,
The percentage of cells in a stage X 1,440 minutes = Time in minutes of cell cycle spent in the stage.
So, to know how much time is spent in each stage of the cell cycle, we need to know the time it takes for a cell to complete the whole cell cycle, and how many cells there are.
We already know that it takes, on average, 24 hours (or 1,440 minutes) for each onion root tip cell to complete the cell cycle.
Now, we should count the number of cells. Since I do not have a slide, I will assume that there are at least 50 cells, and from that 50 cells present in the slide, 25 are in the same stage. Let us say that the 25 cells are in the prophase.
So, considering a total number of 50 cells (100%), 25 cells equals 50% of the total.
Now, we know that
Time required to complete the cell cycle = 1440 minutesPercentage of cells in the prophase = 50%
Minutes spent in prophase = % of cells in prophase x 1440 minutes
Minutes spent in prophase = 50% x 1440 minutes
Minutes spent in prophase = 0.5 x 1440 minutes
Minutes spent in prophase = 720 minutes
According to this example, cells spend 720 minutes of their time in the prophase.
Now, I suggest you count how many cells do you have in your slide, and recognize how many are in each of the stages. Then you will be able to calculate the real-time spent per stage.
--------
You can learn more about time spent in cell cycle at
https://brainly.com/question/7439820
Which kind of joint allows the arms to swing in circles? hinge
ellipsoidal
ball-and-socket
sliding
Answer:
hinge
Explanation:
BALL AND SOCKET Explanation:
Match the foods with their functions in the living organisms they come from.
1. tuna
2. milk
3. potato
4 . lettuce
5. black bean
6. egg
A. leaf from a plant; site of photosynthesis
B. a seed containing the embryo and food reserve
C.a high nutrient liquid produced by mammals
D.energy storage for plant
E. an energy supply for a growing embryo
F.the skeletal muscle used for voluntary movements
Answers:
1 - F
2 - C
3 - D
4 - A
5 - B
6 - E
Explanation:
tuna - the skeletal muscle used for voluntary movements.
milk - a high nutrient liquid produced by mammals.
potato - energy storage for plant.
lettuce - leaf from a plant; site of photosynthesis.
black bean - a seed containing the embryo and food reserve.
egg - an energy supply for a growing embryo.
What kind(s) of cells can develop from totipotent stem cells?
O A. Only cells that are identical to the original stem cell
B. Only cells that are closely related to the original stem cell
C. Any cells of the human body, but not cells of the placenta
D. Any cells of the human body or the placenta
Answer:
D.
Explanation:
Totipotent cells can make any of the 220 cell types in an embryo, as well as the cells found in a placenta!
Any cells of the human body or the placenta can develop from totipotent stem cells. Therefore, the correct option is D.
Totipotent stem cells have the unusual ability to differentiate into any type of human body cell, including placental cells. They have the ability to generate all types of cells, including endoderm, mesoderm, and ectoderm, the three basic germ layers. Because of their potential for development, totipotent stem cells can produce both extra-embryonic and embryonic tissues. Although cells produced from totipotent stem cells can differentiate into any cell type, due to maturation and specialization processes, they are not always identical to the original stem cell.
Therefore, the correct option is D.
Learn more about totipotent stem cells, here:
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the number of possible genetically different gametes for an organism equals 2n where n is the number of pairs of chromosomes if an organism has six pairs of chromosomes how many different gametes ca it produce
A. 64
B. 256
C. 32
D. 128
Answer:
64
Explanation:
Frances hits a cue ball into a rack of billiard balls, sending the balls in many
different directions. After a few seconds, all the balls on the table stop
moving.
Answer:
Left and right
Explanation:
Drag each tile to the correct box
Place the items in order from highest to lowest degree of internal organization
tissue
organ system
HID
&
Answer:
cell
tissue
organ
organ system
I hope this helps
Order from highest to lowest degree of internal organization are organ system, organ, tissues, cell.
What are the characteristic feature of tissue?A group of cells with similar structure and performing specific function called as tissue.
In animal it can be up four types such as connective, muscle, nervous, and epithelial tissue.
Connective tissue is made up of cells and gel like substances. Except lymph and blood all tissue contains collagenous fibers.
Fibers Of connective tissue help in binding of bones, movement of lungs, physical support to cell.
Muscle tissue are up different types like skeletal, cardiac and smooth muscle.
Skeletal muscle help in binding of tendons to bones followed by movement.
Cardiac muscle in heart and help in contraction to pump blood.
Smooth muscle in the intestine helps in movement of food through the digestive tract.
Nervous tissue is present in the brain, spinal cord, and peripheral nerves, made up of neurons.
Epithelial tissue are present on the surfaces the skin, the trachea, the reproductive tract, provide protection to organs.
Learn more about tissues, here:
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_____ combines the isolated gene of one organism with the DNA of a different organism.
Answer:
A transgenic, or genetically modified, organism is one that has been altered through recombinant DNA technology, which involves either the combining of DNA from different genomes or the insertion of foreign DNA into a genome.
Explanation:
Answer:
Recombinant DNA
Explanation:
One reason the skeletal system is important is because __________. A. without the skeletal system, an individual would not have enough calcium to live B. the skeletal system creates the connective tissue and tendons that allow the body to move C. the skeletal system is solely responsible for housing the body's immune system D. the skeletal system is responsible for controlling functions of the entire body Please select the best answer from the choices provided. A B C D
Answer:
b
Explanation:
One reason the skeletal system is important is because the skeletal system creates the connective tissue and tendons that allow the body to move, hence option B is correct.
What is skeletal system?The skeletal system is an arrangement of numerous components that cooperate to support your movement.
Your bones, which are solid objects that form the skeleton of your body, make up the majority of your skeletal system. The skeleton of an adult human has 206 bones.
Your body's skeletal system serves as a support system for it. It offers protection for organs, generates blood cells, gives the body its structure, enables mobility, and stores minerals.
Therefore, the skeletal system creates the connective tissue and tendons that allow the body to move.
Learn more about skeletal system, here:
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During the early stages of meiosis, two chromosomes in a homologous pair may exchane
segments, producing genetic variation in sex cells. This process of exchange is called
Select one:
a. crossing over
b. nondisjunction
c. transcription
O d. genetic shuffling
Check
Answer:
The answer is option A.
crossing over
Hope this helps you
Which describes bedrock? consists of solid rock lies directly above the soil layer does not contain weathered rock forms from decomposed material
Answer:
consists of solid rock
Explanation:
Bed rock are solid rock material usually below the soil surface.
They are found at the ocean floor under sediment and other solid materials. Saprolite are bed rocks that have been weathered they are found above the bed rock overlaining it,
saprolite have different composition because it has gone through chemical weathering.
Above saprolite are soil and other loosed particle.
when the depth and structure of a bed rock is determined it help tell about the history of a place.
Answer:
a
Explanation:
After duplication, at what point does a cell become two cells with identical DNA? starting in prophase end of anaphase end of cytokinesis
Answer:
The correct answer is - end of cytokinesis.
Explanation:
Cytokinesis :- a procedure that partitions the cytoplasm and plasma layer of a cell, bringing about two indistinguishable cells that contain their own DNA, nucleus, nuclear membrane, and plasma membrane.
During the last phase of the cell cycle, cytokinesis permits the cell to complete the process of isolating, making two cells with indistinguishable duplicates of DNA
The cell squeezes in the equator area with the assistance of a ring of contractile protein filaments. The formed cleavage furrow develops until the two cells squeeze off totally.
Thus, the correct answer is - end of cytokinesis.
Answer:
end of cytokinesis
Explanation:
What are two main abiotic factors that affect organisms in marine ecosystems? A. Oxygen level and water temperature B. Predators and competition C. Salinity and water temperature D. Predators and food availability
Answer:
dear user the answer is option A.oxygen level and water temperature and C.salinity and water temperature.
hope this helps
if it's useful to u plz thank and try to mark as brainliest
Answer:
It would be A
Explanation:
What is the name of this tree?
Answer:
pond apple..is the name of that tree.
A compound synthesized by bacteria or fungi that destroys or inhibits the growth of other microbes is a/an:__________.
a. synthetic drug
b. antibiotic
c. antimicrobial drug
d. competitive inhibitor
Answer:
antimicrobial drugs
Explanation:
An antimicrobial is a substance that kills or inhibits the growth of microorganisms such as bacteria, fungi, or protozoans.
Answer:
[tex]\boxed{Option C}[/tex]
Explanation:
A compound synthesized by bacteria or fungi that destroys or inhibits the growth of other microbes is an anti-microbial drug. Anti means "against" so anti microbes mean against microbes. Antimicrobial drugs are synthesized by bacteria and fungi and are used against microbes.
In the active site of the enzyme lotzase, a mutation of lysine 132 toaspartic acid causes a loss of lotzase function. Lotzase is most catalytically active at pH 7. Which is the following is the best reason why this might occur?
a. a negative charge is needed for substrate binding.
b. a positive charge is needed for substrate binding.
c. a general acid is needed for catalysis to occur.
d. more than one of the following can be a good reason.
Answer:
B. positive charge is needed for substrate binding
C. a general acid is needed for catalysis to occur
Explanation:
A mutation of lysine 132 toaspartic acid causes a loss of lotzase function as a result of the enzyme lotzase being most catalytically active at pH 7( neutral).
This condition is however achieved under conditions such as a positive charge being involved in the substrate binding and a general acid being involved in the catalytic process.
what is ecological footprint
Explanation:
Ecological footprint:
Is a Measure the area required by an individual, population or activity of biologically produced land and water to produce all the resources it consumes and absorb the waste it generates, using prevailing technology and resource management practices. Hope this helps and have a great day! Good luckThe animation demonstrates several traits that are characteristic of the primate order. In particular, it shows how primates have several features that enhance their vision and their sense of touch and dexterity. These characteristics make primates particularly well adapted to what type of environment?
Answer:
Arboreal Habitats.
Explanation:
The word arboreal has its roots in the Latin word arboreus, which means "relating to trees."
The word arboreal speaks to not just to animals that are adapted to the tree environment, but also to all other things that look like or take the branching form of a tree. An example would be a diagrammatic representation of one's family geology.
Examples of animals that live on trees are:
KoalaMajority of the Avian Species (especially those that can fly)Sloths etc.Cheers!