Ice floats because
a.)ice is hydrophobic
b.) water is more dense as a solid
c.)ice is hydrophilic
d.)water is less dense as a solid
And Explain
Answer:
D
Explanation:
Because ice less dense than the water.
The ______ ______
surrounds the nucleus and is
made of two lipid bilayers.
Which of the following is true about environmental tobacco smoke (ETS)?
Adults are more heavily exposed to ETS than children.
ETS accelerates the buildup of plaque in the heart and blood vessels.
ETS is responsible for more lung cancer deaths than heart disease deaths
annually.
O ETS has fewer carcinogens, tar, and nicotine than mainstream smoke.
The statement 'ETS accelerates the buildup of plaque in the heart and blood vessels' is TRUE about environmental tobacco smoke (ETS). it is harmful to health.
What is environmental tobacco smoke (ETS)?Environmental tobacco smoke (ETS) refers to the smoke present in an environment due to cigarettes, which may be harmful to health.
It has been shown that environmental tobacco smoke (ETS) contains carcinogenic substances.
Moreover, nocive substances in environmental tobacco smoke (ETS) can also enter the body through respiration and travels in the circulatory system.
Learn more about Environmental tobacco smoke (ETS) here:
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Why is it dangerous to a fetus for the pregnant mother to drink alcohol?
Messenger RNA (mRNA) contains the instructions for —
A. building mitochondria
B. protein assembly
C. DNA replication
D. RNA synthesis
Cual de estos no se podria observar en un microscopio optico crestas mitocondriales, poros de la membrana nuclear, cromosomas de una celula animal condensados durante la mitosis, las dos capas lipidas que forman la membrana plasmatica
Answer:
Crestas mitocondriales, poros de la membrana nuclear y las capas lipídicas que forman la membrana plasmática no son visibles al microscopio óptico.
Explanation:
El límite de resolución de un microscopio óptico es de, aproximadamente, de 0,2 μm (es decir 10⁻⁶ m). Es decir, que en un microscopio óptico sólo podrán verse células y estructuras celulares mayores a 0,2 μm, y en algunos casos serán visibles sólo con tinciones especiales.
Por ende, entre las cuatro estructuras que se nos presentan en el problema sólo los cromosomas de una celula animal condensados durante la mitosis pueden verse al microscopio óptico.
Tanto las crestas mitocondriales como los poros de la membrana nuclear y las capas lipídicas que forman la membrana son estructuras muy pequeñas y visibles solamente al microscopio electrónico.
if an atom contains 5 protons, 4 neutrons, and 3 electrons. its atomic mass is
Answer: 9
Explanation:
atomic mass= protons + neutrons
5+4 =9
b) Identify a dependent variable in the experiments. Identify the reasoning of the scientists when they tested the number of colonies produced by strains C3-PBB and C6-PBB . The scientists also analyzed the number of colonies produced from each of the environmental and clinical isolate strains when the strains were plated on a growth medium lacking the toxic chemical. Justify this analysis.
A dependent variable is the number of colonies produced. The experiment gives a useful insight into the toxicity of the chemicals.
A scientific experiment must always have a dependent and an independent variable. A dependent variable is the variable whose outcome is being determined by manipulating the independent variable which in this case is the presence or absence of the chemicals.
Toxicity of chemical substances is a very important information to scientists as such this experiment is very important because it highlights the toxicity of the chemicals to living things.
Learn more: https://brainly.com/question/24058474
If the pituitary is so important and Eric is not getting replacements of hormones the pituitary makes (except for ADH), why isn’t he dead? To answer this question, think through the cascade of events from hypothalamus to effect.
Answer:
The absence of ADH is not too dangerous.
Explanation:
If there is no place for the storage of ADH hormone in the pituitary hormones, no death occur of the individual because ADH is related to the conserve of fluid in the blood. If this hormone fails to perform its function properly, it causes the body to retain too much water. This more water retention may cause you to feel heavier than normal, and less active so the person did not die due to the deficiency of this disease.
Why is DNA in this world?
Answer:
According of what I remember
DNA is vital for all living beings even plants. It is important for inheritance, coding for proteins and the genetic instruction guide for life and its processes. DNA holds the instructions for an organism's or each cell's development and reproduction and ultimately death.
differences between reproduction in mammals and amphibians.
Answer:
the answer is a little weird but hope this helps
Explanation:
While all of these animals reproduce sexually (meaning that the species consists of males and females and mating involves the fetilization of eggs by sperm), reptiles and mammals reproduce through internal fertilization (inside the female) whereas amphibians practice external fertilization.
Answer:
While all of these animals reproduce sexually (meaning that the species consists of males and females and mating involves the fetilization of eggs by sperm), reptiles and mammals reproduce through internal fertilization (inside the female) whereas amphibians practice external fertilization
HELP PLEASE What is the correct percentage of time a cell spends in the Interphase and the Mitosis stages?
Answer:
20% in mitosis
80% in interphase
to be more exact it spends 78% in interphase and 22% in mitosis :)
Answer:
c
Explanation:
A sports medicine major wants to conduct a experiment to determine if there there's a correlation between the members of the soccer team's leg strength and the time it takes for them to sprint 40 yards. He sets up the following test and records the data:
Every day for a week, he counts how many times each player can leg press 350 pounds. The following week, he has each player sprint 40 yards every day. The table shows the average number of leg-press repetitions and the average 40-yard dash time (in seconds) for seven randomly selected players. What is the equation of the line best fit? How many seconds should he expect a player to take to run 40 yards if that player can do 22 leg-press repetitions? Round any values to the nearest tenth, if necessary.
leg press (reps) 12 | 32 | 7 | 11 | 23 | 28 | 15 |
40-yard dash (s) 8.6 | 14.6 | 7.1 | 8.3 | 11.9 | 13.4 | 9.5 |
Answer:
The correct answer is the equation of the line of best fit is y=0.11x+4.54, and it would take the player 6.96 seconds to run.
Explanation:
Using technology, we calculate the line of best fit; we first enter the data points as a scatter plot, then run the regression tool, which gives us y=ax+b, where a=0.11 and b=4.54.
We now use this equation, y=0.11x+4.54, to calculate the amount of time it would take a player to run 40 yards if the player can do 22 leg-press reps:
y=0.11(22)+4.54=6.96.
why does paper bread tableyellow?
Answer:
yes
Explanation:
i did this and got it right.
Which phrase best describes how scientists use the data they collect? A. to prove that a scientific hypothesis is correct B. To convince students to repeat their experiments C. To decide is there is support for an experiment's conclusions D. To persuade people to believe the same things
Answer:
Me personally, I would choose B because we're always thought to record our data and steps on how to get the same result over and over again. Without the data, you wouldn't be able to understand what you should be looking for or seeing if it'll happen again.
Explanation:
P.S good luck.
if chlorophyll did not work properly during the process of photosynthesis, how would this affect the plant's ability to make glucose?
Answer:
it would not turn green an nutrients would be lost because chlorophyll helps the plant with their food
Which of the following activities is most likely to result in nutrient pollution?
a. cutting down trees
b. pouring motor oil down the drain
c. excess fertilizer use
d. none of the above
Which is an abiotic factor that can be found in a rain forest ecosystem?
O A. Algae
O B. Oxygen
O C. Animals
O D. Bacteria
Cells carry out respiration continuously because all living things need a constant supply of _________________________________.
A Food
B Water
C Energy
D Oxygen
2. An atom consists of 21 protons 22 neutrons and a number of electrons which
information will be MOST helpful in determining the atom's identity
The number of protons and neutrons
The number of protons
The number of electrons
The number of valence electrons
CUERALL
Answer:
the number of valence electrons cuerall
If a strand of DNA has 24% T, what percent will be G?
Answer:
points
Explanation:
for freee thanks and sorry
Red-green color blindness is an X-linked recessive disorder.
A Punnett square is shown. The columns are labeled X Upper B and Upper Y. The rows are labeled x Upper B and x b.
What is the probability of the offspring having red-green color blindness for the cross that is represented by the Punnett square?
0 percent
25 percent
50 percent
75 percent
Answer: 25%
Explanation: This is the correct answer on Edge 2020 (just took the unit test review and made a 100%) ^-^.
X-linked recessive disorder refers to the genetic condition in which mutations or errors are associated with the gene are present on the X chromosome. The male will be affected by the disorder, while the females can be carriers.
In the given Punnett square, there is a 25% chance that the offspring can be -red-green color blind.
Red-green color blindness in people refers to the difficulty in distinguishing the colors like red, green, orange, and yellow. People with color blind have a normal life and there is no proper cure for the condition.
Thus, the percentage of the offspring that will be red-green color blind is 25%.
To know more about X-linked recessive disorder, refer to the following link:
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Which of the following passages has the most objective tone?
A
Do you know about the brave dogs in Nome, Alaska, who saved the town in 1925?
B
The people of Nome, Alaska were in big trouble in 1925. It was up to the dogs to save them.
C
The hero dogs in Nome, Alaska, did what no pilot could do: they brought medicine to the town.
D
In 1925, people were sick and planes couldn't land in Nome, Alaska. Teams of dogs delivered the medicine.
Answer: in 1925, people were sick and planes couldn’t land in nome, Alaska. Teams of dogs delivered the medicine
Explanation: I got it right on a quiz
In 1925, people were sick and planes couldn’t land in Nome, Alaska. Teams of dogs delivered the medicine has the most objective tone. Thus, the correct option is D.
What is the objective tone?Objective tone is an impartial tone. This tone does not show any kind of feelings for or against a topic which therefore, is an unbiased or neutral feeling. The objective tone often uses higher level words and avoids pronouns such as I and you in the sentences, creating a type of formal tone. Subjective tone is a personal, biased, emotional, and often informal kind of tone.
Objective tone refers to an impersonal style of writing, which gives us the information about something however it does not include any information about the writer. So, a sentence like this: "In 1925, people were sick and planes couldn't land in Nome, Alaska. Teams of dogs delivered the medicine" is of the objective tone, Because it just tells us a fact.
Therefore, the correct option is D.
Learn more about Objective tone here:
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#SPJ2
What is the relationship between the biodiversity of an ecosystem and its
ability to rebound from disturbance?
A. A biodiverse ecosystem is not affected in any way by disturbance.
B. A biodiverse ecosystem harbors many interactions, thus a
disturbance may impair some interactions, but not all.
C. The relationship between the biodiversity of an ecosystem and its
ability to rebound from disturbance is unknown.
D. A biodiverse ecosystem has so many interactions that the
slightest disturbance will destroy it.
Answer:
B. A biodiverse ecosystem harbors many interactions, thus a disturbance may impair some interactions, but not all.
Explanation:
Biodiversity is the variation of life forms in an environment. This is as a result of available nutrient and energy to support the various life forms.
The relationship between biodiversity and rebound from disturbance is such that a biodiverse ecosystem is able to resist any change. The disturbance might affect proportion of the populace. But on the long organisms can survived and be propagated again.Answer:
B is correct just did the quiz
Explanation:
Which of the following structures is not part of a nucleotide of DNA? *
Deoxyribose sugar
Nitrogenous base
Ribose sugar
Phosphate group.
Answer:
I believe it phosphate group
Explanation:
match the function to the blood vessels
the words are
capillary
artery
vein
the definitions
Carries blood back to the heart
carries blood away from the heart
connects arteries and veins
Answer:
1.capillary- connects
2.artery-away from heart
3.vein- returns blood
Answer:
1.capillary- connects
2.artery-away from heart
3.vein- returns blood
Explanation:
Got it right edge
The diagram below illustrates the movement of glucose across a cell membrane. Which two processes are most directly represented in this diagram?
Answer: molecule transport and energy use
Explanation: I got the answer from castle learning
Give two examples each of centrifugal force
Answer:
Centripetal Force Vs Centrifugal Force.
Explanation:
Answer:
♡ hi there, fairy! ♡
- two examples of centrifugal is when mud flicks off of a car tire
and when a car drives around a curve. hope i could help!
-madi/madeline
✧･ﾟ: *✧･ﾟ:･ﾟ✧*:･ﾟ✧･ﾟ: *✧･ﾟ:･ﾟ✧*:･ﾟ✧
Explanation:
Name the enzymatic reactions that turn a large substrate into two or more smaller products
Answer:
you have a question you can ask
Answer:
sugar
Explanation:
it among the amino acids
a, b, c, d. first to answer gets brainliest
Answer:
I'm pretty sure the answer is C
Explanation:
Sorry if wrong.