Answer:
B
Explanation:
Aas Mendel's experiment a well controlled one? Why or why not
Answer:
Mendel did not set out to conduct the first well-controlled and brilliantly-designed experiments in genetics. His goal was to create hybrid pea plants and observe the outcome. His observations led to more experiments, which led to unusually prescient conclusions.
Explanation:
what are two abiotic factors that might account for the differences in productivity among the land ecosystems in the table?
the two abiotic factors can be weather and soil
Which section of the article BEST explains why
cladistics and phenetics are not entirely distinct
classification methods?
A: Types of Classification Systems
B: biological classification
C: classification system is based on phenetics
D: classification systems, based on cladistics/Phylogeny
The altitude where the dewpoint equals the air temperature is called what?
Answer:
saturated
When the dew point temperature and air temperature are equal, the air is said to be saturated. Dew point temperature is NEVER GREATER than the air temperature. Therefore, if the air cools, moisture must be removed from the air and this is accomplished through condensation.
(not sure tho)
How does snake venom kill prey? How is venom toxicity measured?
Answer:
1.Snakes use their venom cautiously, injecting amounts sufficient to disable prey or to defend against predators. Snake venom works by breaking down cells and tissues, which can lead to paralysis, internal bleeding, and death for the snake bite victim.
2.Snake venom and other toxins' strength is measured using the LD50 (lethal dose 50%) test. ... The amount of test substance that kills half the animals gives the LD50 figure. LD50 figures are used, in theory, to indicate the standard toxicity value for each chemical.
This is the solid layer of the earth. It includes the crust and the lithosphere.
lol
lolololololololololololololololololololololololololololololololololol!!
Answer:
Lithosphere
Explanation:
ion 7 (5 points
If the resistance of aircuit is 3 ohms, and the voltage produced by the cell in the
circuit is 12 voltsvhat's the magnitude of the current?
12
36 amperes
0.25 amperes
9 amperes
4 amperes
Answer:
4 amperes
Explanation:
Using the formula; V = IR
Where;
V = voltage (volts)
I = current (amperes)
R = resistance (ohms)
From the formula; I = V/R
According to the information provided in this question, the resistance of circuit (R) is 3 ohms while the voltage (V) produced by the cell in the circuit is 12 volts.
Therefore, I = 12/3
I = 4 A or amperes.
4. Which of the following terms describes a disturbance that transfers energy from
one point to the other
a. A vacuum
b. A medium
c. A wave
d. None of the above
5. Which of these is not true about gamma rays ? a. They can travel through a medium b. The energy of the wave increases as the frequency increases The energy of the wave increases as the length of the wavelength increases d. They can travel through spacel a vacuum
6. X rays are called ionizing radiation because a. The radiation removes electrons from atoms b. The radiation does not disrupt chemical bonds The radiation keeps living tissues in tact d. The radiation has low frequency
Answer:
4. A
5. They can travel through a medium
6. The radiation removes electrons from atoms
Explanation:
Hope this helps:)
What are three types of forceful lifting of air?
Answer:
The correct answer is - orographic lifting, frontal wedging, or convergence.
Explanation:
The interaction of the air masses leads to the lifting of the air forcefully. These forcefully lifting of air are three types that are: orographic lifting, frontal wedging, or convergence.
orographic lifting: On the higher mountains the air masses move from low elevation to higher elevation as it moves.
frontal wedging: lifting of air takes place when warm air colloids to the cool air and cool air acts, to rise the air.
when air near the surface flows together and is pushed upward when it is squeezed together i known as convergence
A __________________ _______________________ does not change the substance into anything new.
Answer:
Physical change
Explanation:
How many base pairs per turn of the helix would most likely correspond to a positively supercoiled DNA molecule
Answer: Five
Explanation:
A positively supercoiled DNA is a overwound DNA. It forms a twisted shaped of figure eight. The lobes of the figure will appear rotated in clockwise or anticlockwise direction with respect to each other. The base pair per turn for the helix in positively supercoiled DNA molecule is five. This conformation of DNA inhibits the replication and transcription processes due to overwound nature of DNA.
Suppose a plant on a farm needs a gallon of water per day to thrive. The farmer sets up an irrigation system that delivers exactly a gallon of water to the plant each day. However, the plant dries out. Why could this have happened
Answer:
Explanation:
This could have happened due to two reasons, either excess heat or lack thereof. The plant needs a gallon of water to thrive on a regular day. If the plant receives an excessive amount of heat it will completely evaporate the water and slowly dry out the plant until it withers away. The same can happen if there is not enough heat/sunlight, but instead, in this scenario, the water will take longer to evaporate and will accumulate in the soil. Adding more water will eventually block oxygen from passing and cause the plant to dry out and wither away.
PLEASE HELP!
Hemophilia is a recessive, X-linked disorder. If a male child is born with hemophilia and neither the mother nor the father has hemophilia, which of the following statements is most likely true?
1. the father is the carrier
2. the child’s sister will have hemophilia
3. all answers are correct
4. the mother is the carrier
Answer:
I may be wrong but maybe 2
Explanation:
Answer:
4
Explanation:
Because the mom may have a recessive x when she was born so she carries it. Males can't be carriers.
[FW.04H]The table below shows the data collected by a student about the number of gallons of water wasted per year by a leaking faucet.
Faucet leaking rate (drips per minute) 5 10 20 30 60
Water wasted per year (in gallons) 173 347 694 1,041 2,082
Based on the table, which of these graphs would best help to calculate the number of gallons of water wasted per year by a faucet leaking at the rate of 40 drips per minute?
bar graph
histogram
circle graph
line graph
Answer:
hey its bar graph
Explanation:
Answer:
Bar graph
Explanation:
I took the FLVS exam :)
what happens during the first part of Protein Synthesis?
Answer:
The first step of protein synthesis is called Transcription. It occurs in the nucleus. During transcription, mRNA transcribes (copies) DNA. DNA is "unzipped" and the mRNA strand copies a strand of DNA.
Explanation:
;)
Explain how covalent bonds and hydrogen bonds hold together a strand of DNA
Answer:
Covalent bonds appear inside every linear chain and connect bases, sugars, and phosphate groups.
Hydrogen bonds appear between two strands and involve the base from one strand with the base from another strand in the complementary pairing.
Explanation:
A covalent bond is a chemical bond formed by joining electrons of two non-metal atoms into one or more common pairs.
A hydrogen bond (X-bond) is a type of weak chemical bond based on electrostatic attraction between a hydrogen atom and a nucleophilic atom that contains free electron pairs.
The exchange of substances between the blood vessels and the surrounding tissues can only happen in the ___________.
Answer:
The exchange of substances between the blood vessels and the surrounding tissues can only happen in the capillaries.
Explanation:
Capillaries are the exchange vessels of our body. They form a network-like structure, called the capillary area. When blood, from the larger arterioles, spreads through the many capillaries in the capillary area, the blood pressure drops and the blood flows only at a slow speed. Through the thin, semi-permeable walls of the capillaries, the exchange of gas and substances between the blood and the surrounding tissue then takes place. Subsequently, blood continues to flow through the postcapillary venules, to which the capillary area has been reconnected. Blood pressure and blood flow increase and blood eventually reaches the heart through enlarged veins.
How has trend evolved from 6 million years ago to modern humans?
Answer:
well long ago humans used to wear animal skins and now we just wear clothes out of cloth,cotton and stuff
mong the microbes responsible for producing fermented foods, the two most prominent groups are the lactic acid-producing bacteria and yeasts that produce _________. g
Answer:
Alcohol and carbon dioxide
Explanation:
Fermentation is a process carried out mostly by two organisms namely: bacteria and yeast. The bacteria converts sugar molecules to lactic acid, hence, it is called LACTIC ACID FERMENTATION. However, on the other hand, the YEAST converts sugar molecules to ALCOHOL (ETHANOL) and CO2.
Yeast is an organism capable of undergoing both aerobic and anaerobic (fermentation) respiration depending on the availability of oxygen. This fermentation process enables it produce fermented foods e.g beer, yoghurt by producing ALCOHOL as a product.
Samuel adds a teaspoon of salt to a glass of water. He notices that the salt disappears. Samuel takes a sip to discover that the water tastes salty,
What kind of change has occurred?
OA.
OB.
OC.
OD.
It's a chemical reaction because a new substance has formed.
It's a physical change because the water and the salt kept their original properties.
It's an example of synthesis because two substances reacted to give one substance.
It's a chemical reaction because the water now tastes salty but originally did not.
Reset
Next
Answer:
B
Explanation:
its a physical change bc the salt only dissolved it did not create something new or change its properties.
What does the outside of the glass with ice cubes feel like
so u order soda, they give it to you on a cup of glass with Ice.
well u touch it, and what does it feel like?
C O L D
Studies of conjugation in multiple Hfr strains revealed that the bacterial chromosome was: circular. single stranded. directional. None of the above
Answer:
circular
Explanation:
Studies of conjugation in multiple Hfr strains revealed that the bacterial chromosome was circular.
Conjugation in bacteria is a process through which genetic materials are directly transferred from one bacterium to another. The process was first discovered by the experimental work of Joshua Lederberg and Edward Tatum in 1946. The donor bacterium first makes a copy of the genetic material by replication and then pass a copy to the recipient bacterium.
It was during the process of conjugation that scientists discovered that the genetic material of the bacteria is a circular chromosome, also known as the F plasmid. The circular chromosome breaks at a particular point and becomes a linear structure before replication and then folds back thereafter. The replicated chromosome is linearly transferred to the recipient cell.
Please help me guys!!
Describe how many genes and chromosomes can be found in the human body, and how they influence physical appearance and other traits.
I don’t really have an answer but I have an explanation
Explanation: In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46. Twenty-two of these pairs, called autosomes, look the same in both males and females. These pairs of genes then determine certain physical features or traits.
Humans have 46 chromosomes and around 20,000-25,000 genes that determine physical appearance, behavior, and other traits.
What are chromosomes?The human body has 46 chromosomes, which are made up of long strands of DNA that contain the genetic information for an individual. These chromosomes are arranged in 23 pairs, with one chromosome from each pair inherited from each parent.
Each chromosome contains thousands of genes, which are segments of DNA that code for specific proteins that carry out various functions in the body. Genes play a key role in determining an individual's physical appearance, as well as other traits such as susceptibility to certain diseases and personality traits.
Inherited variations or mutations in these genes can lead to differences in physical appearance and traits between individuals. Additionally, environmental factors can also influence the expression of certain genes, further contributing to individual differences.
Learn more about chromosomes, here:
https://brainly.com/question/30993611
#SPJ2
A farmer sprayed his orange trees with a pesticide to eliminate the insects damaging the trees. Some of the insects survived and produced offspring that were also resistant to the pesticide.
Which process is illustrated by the pesticide resistance of the offspring?
natural selection
selective breeding
aerobic respiration
sexual reproduction
Answer:
selective breeding
hope it helped sorry if it right
Explanation:
What percent of the trees cut down are used for something other than paper?
a. 359
b. 45%
55%
d. 65%
Answer:
D. 65%
Explanation:
I majored in Biology
what is an allele?
a. a group of proteins
b. a type of virus
c. a group of chromosomes
d. a form of a gene
Answer:
D
Explanation:
According to the online dictionary: one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.
Answer: d. a form of a gene
Explanation:
An allele is one of a pair of genes that appear at a particular location on a particular chromosome and control the same characteristic, such as blood type or color blindness. Alleles are also called allelomorphs. Your blood type is determined by the alleles you inherited from your parents.
Researchers test a group of cells for DNA content immediately following mitosis and find the average to be 12 picograms of DNA per nucleus. Based on this information, how many pictograms of DNA would they expect to find at the end of the S phase and at the end of the G2 phase
Answer:
The correct answer is - 24, 24
Explanation:
In any type of cell division, there is an interphase stage before the actual process of division which is a preparatory process or stage that includes different substages like G1, S, and G2. S phase is a synthesis of the cell cycle responsible for duplication or replication of the DNA.
So, at the end of the S phase, the DNA amount becomes double its initial amount and remains the same in the G2 phase. So, if the initial amount is 12 picogram then it will be double in the S phase and remain 12 in G2 as well.
2.) Mother: Hybrid Long Tail
Father: Hybrid Long Tail
I
What are the possible genotypes of the offspring?
What are the possible phenotypes of the offspring?
What are the possible phenotypes of the offspring is long tail
After performing an investigation, a scientist produced results that did not support the hypothesis. Another scientist does the same experiment and her results do support the
hypothesis. What should the scientists' next steps be to make sure any claim made regarding these investigations is valid?
Answer:
Explanation:
compare and discuss
The scientist should compare and discuss the results with other scientists to determine future research plans.
What should the scientist do to validate the result?In order to validate a result a scientist must follow a proven or recognized scientific approach to validate his method.
After performing an investigation, and a scientist produced results that did not support the hypothesis, the scientist should compare and discuss the results with other scientists to determine future research plans.
Learn more about scientific research here: https://brainly.com/question/17216882
#SPJ2
African elephants in Gorongosa National Park are threatened by poachers,
who kill the elephants to sell their valuable tusks. However, some African
elephants never grow tusks (tuskless) and therefore are not hunted by the
poachers. The graph shows the total female elephant population and the
percent of tuskless females in that population from 1970 to 2015. Which of
the following describes the trend in the female elephant population from
1970 to 1995? *
Answer:
4356
Explanation:
i got right in the quizz