Answer:
Biopsies are done to detect cancerous cells.
In biopsy, a piece of suspected tissue cut in thin sections is stained and examined under microscope.
Normal cells shows the property of contact inhibition
Whereas cancerous cells appears to have lost this property. And they multiply rapidly giving rise to masses of cells called tumour cells.
Body systems work alone to keep the body in a state of homeostasis
True or false
Answer:
False, the body systems have to work together to maintain homeostasis
Hope this helps!
alloon 1 and Balloon 2 are filled with the same amount of air.
The air in Balloon 1 is cooled so that it is at a lower temperature than
the air in Balloon 2.
The air in which of these balloons has less thermal energy?
Answer:
Ballon 2
Explanation:
sorry pero hindi ako sigurado
Answer:
balloon 2 is less thermal energy because this balloon is high temperature than balloon 1
A river is being polluted with fertilizer
runoff from a neighborhood of houses.
This is considered
A. point source pollution
B. nonpoint source pollution
C. heavily regulated water pollution
D. illegal
why do we find tea to be tasteless after we have eaten sweet or candies
Explanation:
The answer is that when you eat the sweet candies and chocolates the buds will remain sweet so that's why the tea become tasteless. The buds only relive the sweetness by staying for few minutes or eat something else.
I hope this answers to your question
RNA is produced by
O Ribosomes on the rough endoplasmic reticulum.
O hydrolysis reactions in the nucleus.
O Combining a phosphate group to a DNA nucleotide.
O Complimentary base pairing to a DNA strand.
Answer:
Explanation:
rna is produced in the transcription stage of protein synthesis whereby complementary base pairing occurs
Can someone tell me the percentage
plz plz plz
don’t ignore helpppppppppppppp
Answer:
GG - 25%
Gg - 50%
gg - 25%
The Milky Way galaxy looks like a band of light across the sky. Which observation would provide the best view of this band of light without a telescope
Answer:
The correct answer is - observing on any dark, clear night.
Explanation:
We and many other plants and our sun present in a galaxy, called the Milky Way as it appears as a milky band of light in the sky when you see it in a really dark clear area night.
It can be observed easily without the help of a telescope all it requires a dark but clear night without clouds. It looks like a hazy band or cloudy white or milky color band in the sky.
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Answer:
Complete the following problems using the equation:
Students are not required to memorize this formula but must know the meaning of the symbols:
D = diversity index
N = total number of organisms of all species found
Σ = the sum of
n = number of individuals of a particular species
D is a measure of species richness. A high value of D suggests a stable and ancient site, and a low value of D could suggest pollution, recent colonization or agricultural management. The index is normally used in studies of vegetation but can also be applied to comparisons of animal (or even all species) diversity.
Example: A lake contains 934 brown trout, 733 smallmouth bass, 34 catfish, 2003 carp,
234 steelheads, and 32 northern pikes.
Fish
Number (n)
n(n-1)
Brown Trout
934
934 x (934-1) = 871422
Smallmouth Bass
733
733 x (732) = 536556
Catfish
34
34 x (33) = 1122
Carp
2003
2003 x (2002)=4010006
Steelheads
234
234 x (233)=54522
Northern Pike
32
32 x (31)=992
Total (N)
3970
= 5 474 620
= 3970 x 3969 = 15 756 930
D = = 2.88
Simpson’s Diversity Index – Practice Problems
When comparing two or more samples, the location with the larger D has a greater amount of diversity. Note that a higher total population does not indicate higher diversity.
An area of the Black Forest in Germany contains 134 pitch pines, 24 douglas firs, and 53 red pines.
A meadow contains 1532 chestnut oaks, 342 black cherry trees, 12 white ash trees, and 1022 yellow birches.
Your backyard contains 12 fleas, 34 aphids, 84 ants, 93 beetles, and 1 butterfly.
An African National Park contains 15 lions, 94 giraffes, 1000 wildebeests, 50 elephants, and 5 hyenas.
Mindo (a city in Ecuador) has 832 toucans, 392 red headed barbets, 3 golden headed quetzals, 500 tanagers, 899 parrots, and 50 white capped dippers.
Answer the following questions in your workbook:
Calculate Simpson’s diversity index for each location. Include the table in your workbook.
Distinguish the differences in diversity between two locations listed above.
Explain what may lead to those differences.
Outline the significance of the Simpson’s Diversity Index. You may refer to the following online resource and your textbook to help outline your ideas - http://www.countrysideinfo.co.uk/simpsons.htm
Which of the following is a concern if you forgot to resuspend (mix) culture solutions when performing serial dilution?
A) Bacteria would no longer be able to grow on solid media
B) CFU/mL calculations would not be accurate
C) Colony morphology would be disrupte
D) The pure culture would be contaminated
Answer:
B) CFU/mL calculations would not be accurate
Explanation:
In microbiology CFU is the acronym for Colony Forming Unit, which indicates the number of bacteria or fungi capable of multiplying under suitable conditions. In this case, CFU/mL indicates how much bacterial or fungal cells, susceptible to reproduction, exist within 1 mL of a culture solution.
When this solution is used, to make a dilution or other laboratory activity, it is important that it be resuspended, that is, mixed, as the bacteria or fungus cells can accumulate in the bottom or surface of the substance, changing the value of CFU/mL and causing inaccurate dilutions if used. When resuspended, the substance presents the appropriate value of CFU/mL, ensuring that the dilution is accurate and effective.
Explain how in glycolysis that the spitting of one gluclose molecule results in 4 ATP but there is only a net gain of 2 ATP
What is a way to prevent eutrophication?
Answer:
Agricultural fertilizers are one of the main human causes of eutrophication. Fertilizers, used in farming to make soil more fertile, contain nitrogen and phosphorus. The use, or overuse, of fertilizers can cause these nutrients to runoff of the farmer's field and enter waterways. Eutrophication can have serious effects, like algal blooms that block light from getting into the water and harm the plants and animals that need it. If there's enough overgrowth of algae, it can prevent oxygen from getting into the water, making it hypoxic and creating a dead zone where no organisms can survive.
The following is a list of methods that can be used to control eutrophication:
planting vegetation along streambeds to slow erosion and absorb nutrients.
controlling application amount and timing of fertilizer.
controlling runoff from feedlots.
The best, easiest, and most efficient way to prevent eutrophication is by preventing excess nutrients from reaching water bodies. This can be done in a number of ways, the simplest of which is just being aware of the chemicals and fertilizers that we are using.
Which of the following is MOST directly involved in the motility and intercellular signaling in T-cells: W) filamentous actin X) 200-nanometer myosin fibrils Y) cathepsin-myosin complexes Z) microvilli
Answer:
W) filamentous actin
Explanation:
T cells are a type of white blood cells (leukocytes) that play a fundamental role in the immune system by determining the specificity of the immune response to specific antigens. In T cells, the remodeling of the actin cytoskeleton is critical for the movement of these cells through different tissue environments and for adjusting their behavior during the scanning of antigen-presenting cells. The actin cytoskeleton acts as a physical platform for intracellular signaling events that occur at the immunological synapse formed between a T cell and an antigen-presenting cell, thereby contributing to T cell activation.
Botanists might study the behavior of a school of fish in the presence of a tiger shark. True or false
Answer:
false...
Explanation:
botanists study about plants
Why do all microorganisms produce pyruvate via glycolysis?
a-Evolution
b-All microorganisms do not produce glucose via glycolysis,
there are alternate pathways that produce glucose.
c-Alternate pathways exist where glucose is directly converted to acetyl-CoA
d-All microorganisms do not produce pyruvate via glycolysis, there are alternate pathways that produce pyruvate.
e-Pyruvate is necessary for all dephosphorylation reactions in cells.
Answer:
B) All microorganisms do not produce glucose via glycolysis,
there are alternate pathways that produce glucose.
Given the following cross TtYyRr x TtyyRr (T = tall; t = short Y = yellow; y = green R = round; r = wrinkled), what proportion of offspring would be expected to be short plants with round, green seeds. Write your answer as a reduced fraction - e.g. 1/2 proportion is
Answer:
3/32 ttyyR-
Explanation:
Cross: Tall, Yellow, Rounded individuals with a tall, green, rounded individual
Parentals) TtYyRr x TtyyRr
Gametes) TYR, TyR, TYr, Tyr, tYR, tyR, tYr, tyr (Parent one)
TyR, TyR, Tyr, Tyr, tyR, tyR, tyr, tyr (Parent two)
We need to know what proportion of offspring is expected to be short plants with round, green seeds. So we need to identify the gametes for these traits. The genotypes are:
Shot → ttRound → RR or RrGreen → yy⇒ Parent one can provide gametes tyR and tyr
⇒ Parent two can provide gametes tyR and tyr
(1/8 tyR x 2/8 tyR) + (1/8 tyR x 2/8 tyr) + (1/8 tyr x 2/8 tyR) =
2/64 ttyyRR + 2/64 ttyyRr + 2/64 ttyyRr =
1/32 ttyyRR + 2/32 ttyyRr =
3/32 ttyyR-
The branch of science which deals with the gene and inheritance is called biology.
The correct answer is 3/32.
When a parent has 3 characters and crosses with other parents which have a 3 character is called a trihybrid cross.
In this question, the genotype of the parent is given as follows:-
Mother - TtYyRrFather - TtyyRrThe gametes formed by the parents is as follows:-
TYR, TYr, TyR, Tyr, tYR, tYr, tyR, tyr is gamete of motherTYR, TYr, TyR, Tyr, tYR, tYr, tyR, tyr is gamete of father.According to the law of inheritance it stated that the each gamete can fused with any gamete to increase the chances of variation.
Hence, after the crossing the number of offspring will form is 32.
Therefore the offspring which has a short plant with a round green seed is 3/32.
Hence, the correct answer is 3/32.
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Which statement describes a planet as it moves along its orbit?
Answer:
D. It travels fastest and Stronger gravitational pull when closer to sun.
Explanation:
The statement which describes a planet as it moves along its orbit is: D. It travels fastest and experiences a stronger gravitational pull when it is closest to the sun.
A planet can be defined as a large astronomical (celestial) body that has sufficient mass to allow for self-gravity and make it assume a nearly circular shape, which is known as hydrostatic equilibrium.
Generally, a planet revolves in its orbit around the Sun in the solar system and it has a cleared neighborhood.
Thus, a planet which is closest to the Sun would travel the fastest while experiencing stronger gravitational pull.In conclusion, when a planet is closest to the Sun, it travels fastest and experiences a stronger gravitational pull as it move along its orbit.
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Which of the following statements is not true?\
A. Water is essential for life.
B. Water stabilizes temperature.
C. Water is polar.
D. Water is the most abundant atom in Earth’s atmosphere.
E. Water and ice vary in density.
Answer:
D. Water is the most abundant atom in Earth’s atmosphere.
Explanation:
An atom can be defined as the smallest particle of an element (e.g., oxygen, hydrogen, etc). Water is a molecule (H2O) because its atoms are connected by molecular bonds (i.e., water is not an atom). Water is the most abundant molecule on the Earth's surface which covers more than 70 percent of the world's surface. A water molecule contains one oxygen (O) and two hydrogen (H2) atoms which are connected by covalent bonds. Water is also a compound known as a diatomic molecule, i.e., a molecule composed of two atoms of the same type.
A red blood cell leaving the left ventricle of the heart would take which pathway to reach the facial artery?
Answer:
Red blood cell arrives from the inferior vena cava into right atrium before it passes through the tricuspid valve into right ventricle. It then passes through the pulmonary valve into pulmonary artery before travelling through the lungs and back into the heart, this time the left atrium via the pulmonary vein.
Explanation:
hope this helps
The pathway of a red blood cell that leaves the left ventricle of the heart to reach the facial artery would be: Arch of Aorta > Brachiocephalic Trunk > Right Common Carotid Artery > Right External Carotid Artery > Right Facial Artery
The arch of the aorta can be considered as the peak of the ascending aorta.The brachiocephalic trunk refers to the second branch to arise from the aorta. The right common carotid artery arises as a branch of the brachiocephalic trunk of the aortic arch.The facial artery is a branch of the external carotid artery that supplies blood to the muscles and skin of the face.In conclusion, the pathway of a red blood cell that leaves the left ventricle of the heart to reach the facial artery would be: Arch of Aorta > Brachiocephalic Trunk > Right Common Carotid Artery > Right External Carotid Artery > Right Facial Artery.
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The food web models a community along the coast of Alaska. Which
organism in the food web is an herbivore?
A Sea otter
B. Phytoplankton
C. Seagull
D. Rock ptarmigan
Answer:
its d. rock ptarmigan
i just did the pretest plus looked it up!!!!
What will happen to the rates of the forward and reverse reaction when a catalyst is added?
Answer:
heeya I'm jess
your answer is in the pic
Explanation:
hope it may help you
cissy/oppa
whatever hahahaha
1 point
DNA is characterized by a single helix and ribose sugars.
O True
False
Someone who can help me please thank you?
Answer:
The dna added on is to give the corn more strenghth
Explanation:
Bio 111 Unit 1 Extra Credit
Crossword
This is what I see here,.
A bird that preys on moths is introduced to the habitat with moths and trees like the ones shown below. What will most likely happen to the population of the moths in this habitat?
Answer:
It will decrease
Explanation:
Proteins have a variety of functions within a living cell. What are the possible function of proteins, and how can proteins be so divers?
Explanation:
hope it helps thank you❤
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(you dont need to answer them all but at least help me with a couple)
1) Explain Uganda’s ABC program in the fight against HIV/AIDS
2) Why has the Ugandan government pushed Abstinence as a means of combating the spread of HIV/AIDS?
3) What risks are involved with the use of condoms in combating the spread of HIV/AIDS?
4) On a separate piece of paper, construct a population pyramid to illustrate the current age groups infected by HIV/AIDS in Uganda.
Answer:
1. Abstain, Be faithful, or, as a last resort, use a Condom. Within a few years, Uganda had developed what researchers call a "social vaccine" against HIV: cultural norms about sexual responsibility, preached in clinics and public schools, as well as churches and mosques.
3.When used correctly every time you have sex, condoms are the best way to prevent sexually transmitted infections such as HIV. They have a very low failure rate and are effective for all forms of sex.
The complex structures of DNA and protein found in the cell nucleus are mitochondria. nucleoplasm. histones. nucleases. chromosomes.
Answer:
chromosomes
Explanation:
Genomics refers to the scientific study of genes (DNA) found in living organisms such as humans and animals.
A genome can be defined as the complete set of hereditary instructions that is typically found in the deoxyribonucleic acid (DNA).
The complex structures of deoxyribonucleic acid (DNA) and protein found in the cell nucleus are generally referred to as chromosomes.
In sexual reproduction, the chromosomes from parents are found in the cell nucleus and are comprised of deoxyribonucleic acid (DNA), histone proteins, etc. Thus, they are used to store genetic informations in living organisms.
Basically, the human somatic cell is made up of 46 chromosomes which are sub-divided into 22 pairs of autosomes and a pair of sex chromosomes (X and Y). An autosome is one of the numbered chromosome that is typically not a sex chromosome.
On the other hand, sex chromosomes (X and Y) are responsible for determining the gender or sex of living organisms such as humans.
What is true Of the increased levels of CO 2 in the atmosphere
Answer:
yes
Explanation:
How is serving size important to good nutrition and health
Answer:
it depends on the amount of each nutrition to make a balance meal
examples of receptors
Answer:
Chemoreceptors detect the presence of chemicals.
Thermoreceptors detect changes in temperature.
Mechanoreceptors detect mechanical forces.
Photoreceptors detect light during vision.
More specific examples of sensory receptors are baroreceptors, propioceptors, hygroreceptors, and osmoreceptors.
Explanation:
Answer:
Photo-receptors detect light during vision.
Explanation:
