Answer:
Independent variable: different amounts of second-hand smoke
Explanation:
The independent variable in an experiment is the variable that the experimenter changes or manipulates in order to bring about a measurable response.
In this question, a test is being carried out to determine the health effects of different amounts of second-hand smoke on one-year-old hamsters. Based on this, the independent/manipulated variable is the DIFFERENT AMOUNTS OF SECOND-HAND SMOKE because it is the variable being changed.
will mark brainliest
hahah you don't know this? can't imagine being that dumb must suck.
can someone help me please asapppppppp
Answer:
Molecule 3
Explanation:
DNA contains Deoxyribose, Phosphate, and 4 bases: Adenine(A), Thymine(T), Guanine(G), and Cytosine(C)
Molecule three contains Deoxyribose, Phosphate, and Guanine, while the others do not.
RNA contains ribose, which is why Molecule 2 is out of the question.
DNA does not contain glucose, henceforth marking Molecule 1 incorrect.
Molecule 4 may seem correct, but recall that DNA contains Deoxyribose, Phosphate, and a base, in this case Guanine(G). This answer contains no Deoxyribose.
What are the two sex chromosomes
Answer:
X and Y
these ur answer sir
can someone help me asapppp
Answer:
Am I supposed to tell you if it's right or wrong? or what...??
Explanation:
Answer:
C
Explanation:
Which of the following statements is true?
Organs are more complex than the tissues they are made from.
Carbon dioxide is absorbed by the lungs and stored in alveoli.
Running, jumping, and biking are controlled by the cerebrum.
The heart and lungs do not need each other to supply the body with oxygen.
Answer:
It is Running, jumping, and biking are controlled by the cerebrum.
Explanation:
I had question this on my test last week
Answer: Organs are more complex than the tissues they are made from.
Explanation:
WILL GIVE BRAINLIEST!!!!!!
An amino acid is to a polypeptide as:
glycogen is to glucose.
testosterone is to a steroid hormone.
a phospholipid is to a plasma membrane.
a nucleotide is to a nucleic acid.
The second option, but please correct me if I'm wrong.
Which statement best describes the Sun?
A. The Sun reflects the light from the Moon.
B. The Sun is the central planet of the Solar System.
C. The Sun is the closest star to Earth.
D. The Sun revolves around the Earth.
Answer:
C. A. are both correct answers
If you remove one species from the Amazon rainforest, will it fall apart?
Not necessarily the food chain may change for some animals because they eat that one species.
What would happen if the Amazon rainforest was cut down?Burning away the Amazon would change millions of living species to end and eliminate their habitats.
Many of these flora, fauna, and other forms of life haven't even been same by science yet.
Thus, the food chain may change for some animals because they eat that one species.
To learn more about Amazon rainforest click here;
https://brainly.com/question/42807
#SPJ2
Certain hormones , such as follicle stimulating hormone (FSH) and luteinsing hormone (LH) affect the reproductive organs of both males and females . Other hormones, known as _______, have significantly higher concentrations in one gender rather than the other. ______ and ______ are the most critical of these, playing a key role in the development of reproductive systems and gender-specific traits. High concentrations of these hormones in the opposite gender offten result in significant complications. _______ stimulates cells to produce testosterone in males, while in females, this hormone signals an increase in ovulation hormones to prepare for pregnancy. ______ stimulates the production of sperm in males, but signals growth of the ovum in females.
FSH, LH, Androgen's, Estrogen, Prolactin, testosterone
Answer:
LH, Estrogen, Prolactin, FSH, testosterone
Explanation:
just trust me :-)
Answer:
LH, Estrogen, Prolactin, FSH, testosterone
Explanation:
did it on usatestprep
Which molecule separates the conteins inside of the cell from the contents outside of the cell
Answer:
Thanks
Explanation:
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Question 4 (2 points)
Separately sodium and chlorine are dangerous, but together they create
a
b
ООО
a poison
baking soda
salt
C
d
nothing
Answer:
salt is the correct answer
Which renewable energy source would be MOST appropriate for lands near a flowing stream or river?
microhydro
geothermal
wind energy
O biofuels
Answer:
microhydro
Explanation:
just look at a picture lol. Also I got it right on a test :)
Answer:
microhydro
Explanation:
What amino acid sequence is produced by the following DNA template strand? 3’ ATG CCC TTA GAT GGT AAC 5’
The Law of Segregation states that: Question 6 options: Dominant traits will segregate with other dominant traits Genes segregate equally into gametes Recessive traits always segregate together Genes do not influence each other with regard to sorting into gametes
Answer:
Genes segregate equally into gametes
Explanation:
Gregor Mendel, due to his contribution to genetics, is referred to as the FATHER OF GENETICS. Among his contribution is the principles that governs inheritance in organisms. One of those principles is LAW OF SEGREGATION.
LAW OF SEGREGATION states that the alleles of a particular gene will separate into gametes in an equal manner. For example, in a gene Aa, each gamete produced by the organism with this gene will contain either allele A or allele a in equal proportion.
which of the following identifies this phenomenon and explains how it is formed
Answer:
A phenomenon, in a scientific context, is something that is observed to occur or to exist.
Explanation:
Examples of natural phenomena include gravity, tides, biological processes and oscillation.
Social phenomena are those that occur or exist through the actions of groups of humans. there is also difference between it and the natural phenomenon.
natural phenomenon - all phenomena that are not artificial. phenomenon - any state or process known through the senses rather than by intuition or reasoning.
if 28% of the bases in a DNA strand are guanine, what percentage are thymine
Answer:
22%
Explanation:
According to Erwin Chargaff in his complementary base pairing rule, a DNA molecule consists of four nucleotide bases that pair with one another in the follow order: Adenine (A) to Thymine (T), and Guanine (G) to Cytosine (C).
According to Chargaff, the amount of Adenine in the DNA equals the amount of Thymine while the amount of Guanine in the DNA equals the amount of Cytosine. The sum of all the bases equals 100%. That is;
A + T + G + C = 100%
In this question, if 28% of the bases in a DNA strand are Guanine, the amount of Cytosine will also be 28%. Hence,
28% + 28% + A + T = 100
56% + A + T = 100
A + T = 100% - 56%
A + T = 44%
Since, A = T
A/T = 44/2
A/T = 22%
Hence, the amount of Thymine in the DNA strand will be 22%
can someone please help me
Answer:
Explanation:
ionic bonds
Answer:
C) hydrogen bonds
Explanation:
DNA is constructed of two strands, consisting of sugar molecules and phosphate groups. Between these two strands are nitrogen bases, the compounds which make up organisms' genes, with hydrogen bonds between them. Those hydrogen bonds have sometimes been seen as crucial to holding the two strands together
1) A vehicle is traveling at 150 km/h after 3 hours it is traveling 240 km/h.
Was the vehicle accelerating or decelerating and at what rate?
(And this is for science not biology)
Answer:
Accelerating (30km/hr²).
Explanation:
In physics, acceleration can be defined as the rate of change of the velocity of an object with respect to time.
This simply means that, acceleration is given by the subtraction of initial velocity from the final velocity all over time.
Hence, if we subtract the initial velocity from the final velocity and divide that by the time, we can calculate an object’s acceleration.
Mathematically, acceleration is given by the equation;
[tex]Acceleration (a) = \frac{final \; velocity - initial \; velocity}{time}[/tex]
[tex]a = \frac{v - u}{t}[/tex]
Where,
a is acceleration measured in [tex]ms^{-2}[/tex]v and u is final and initial velocity respectively, measured in [tex]ms^{-1}[/tex]t is time measured in seconds.Given the following data;
Initial velocity, u = 150km/h
Final velocity, v = 240km/h
Time, t = 3 hours
Substituting into the equation, we have;
[tex]a = \frac{240 - 150}{3}[/tex]
[tex]a = \frac{90}{3}[/tex]
Acceleration, a = 30km/hr²
Therefore, the vehicle is accelerating at the rate of 30km/hr² because its final velocity is greater than its initial velocity.
For deceleration, the final velocity of an object such as a vehicle would be lesser than the initial velocity.
CAN SOMEONE CHECKS THIS QUESTION TO SEE IF IM RIGHT THIS IS FOR A MAJOR GRADE!
Deborah has Cystic Fibrosis, a serious genetic defect that interferes with the body's ability to transfer salt and water to and from the body. The defect causes secretions in her body to be thick instead of the normal thin secretions in healthy people. These secretions clog her passageways which can be life-threatening. The following pedigree shows her family in which some individuals are affected by Cystic Fibrosis.
QUESTION: If Deborah marries a man unaffected by Cystic Fibrosis, which of the following describes the possibility that her daughter will be affected by Cystic Fibrosis?
ANWSER=25%
Answer: yeah I think you right
Explanation:
PLEASE HURRY I HAVE A COMPLETE MINUTES LEFT ON MY TEST !!
Which of the following does not indicate velocity? *
A.14 m/s SSE
B.40 km/h toward the town square along the main street
C.80 km/h from New York to New Jersey
D.28 km/h
Answer:it’s c
Explanation:
Answer:
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How would I change this title up to grab the readers attention?
Title: Measuring the frequency of crossing-over with Sordaria fimicola
About: counting non-recombinant and recombinant sordaria asci to see why crossing over is important for what phase of meiosis
6. A cell recognizes that it has a damaged
mitochondria. Where would this damaged
organelle go to be broken down?
A. Lysosome
B. B. Vacuole
C. C. Chloroplast
D. D. Cell Membrane
Explanation:
Cell death, also called apoptosis, is an essential part of life. As cells become old or broken, they are cleared away and destroyed. Mitochondria help decide which cells are destroyed.
What is this graph showing?
Answer: It's showing the change of the average temperature.
Explanation:
Answer:
location b is cooler than a but gets hotter than a, goes back down lower than a
Explanation:
When and why does aerobic respiration occur during cellular respiration in plants?
Chapter 3 Study Guide (Connect-ED)
Please answer as much as you can, but try to answer ALL if you can.
1. Use the term sister chromatids in a sentence.
2. Define the word centromere in your own words.
3. The new cell formed by mitosis are called ________.
4. Use the term cell differentiation in a sentence.
5. Define the term stem cell in your own words.
6. Organs are a group of _______ working together to preform a different task.
Answer:
1. Sister chromatids are two identical copies of one chromosome.
2.The place where the sister chromatids are attached.
3. a diploid cell
4. Cell differentiation is when a cell turns from one type to another.
5. a cell that is uniquely able to develop into another.
6. tissues
Which of the following has the particles with the least kinetic energy
(motion) of it's particles?
Answer:
Explanation:
Kinetic energy is dependent on temperature. The higher the temperature the faster the kinetic energy. You didn't give any answer options but choose the one that is at the highest temperature.
What makes producers so unique compared to other organisms in any ecosystem?
A. They are the only organisms capable of capturing energy.
B. They are the only organisms that are green.
C. They can recycle nutrients and water.
D. They can take energy from other organisms.
Answer:
A
Explanation:
In ecology, we define producers as organisms that are able to make their own food through photosynthesis or chemosynthesis. ... An organism that cannot make its own food cannot be a producer in ecology by definition.
Which statements from this comparison of aerobic and
anaerobic cellular respiration are errors? Check all that
apply.
Statement 1
Statement 2
Statement 3
Statement 4
Statement 5
Statement 6
Answer:
Statement 1,3, and 4 are errors.
Explanation:
The other statements are correct.
If a strand of DNA has 10% G, what percent will be T?
Plz help
.
17.Base your answer to the following question on the diagrams below of two cells, X and Y,
and on your knowledge of biology
B
Cell X
Cell Y
Identify one process that is carried out in cell that is not carried out in cell X.
Your response:
Answer:
cell y is correct
Explanation: