Answer: Letters, the birds minimize heat loss by keeping the outer surface of their plumage below the temperature of the surrounding air. At the same time, the penguins' thick plumage insulates their body and keeps it toasty.
Explanation:As detailed in an article published today in the journal Biology
Q: What cellular mechanism causes cancer?
Select one:
a. cells produced with no DNA
b. uncontrolled cell division
c. defective cell membranes
d. cells produced without nuclei
Answer:
the answer is bUncontrolled cell division is a cellular mechanism which causes cancer, hence option B is correct.
What is cancer?A phrase for conditions where aberrant cells can infect surrounding tissues and divide uncontrollably. The lymphatic and vascular systems of the body are further routes by which cancer cells might spread.
Cancer is a condition wherein a few of the body's cells grow out of control. Cancer comes in many forms, and each one starts when a single cell experiences a genetic change (or mutation) that enables the cell to divide and multiply uncontrollably.
When one or more genes change and produce malignant cells, cancer begins. Tumors are formed by these cancerous cell groupings.
Therefore, cancerous cells may separate from tumors and spread to other parts of your body through your lymphatic system or circulation.
Learn more about cancer, here:
https://brainly.com/question/8590464
#SPJ2
Small, dark portion in the eye is called:
Answer:
Pupil
Explanation:
It is the dark part of the eye
Answer:
The pupil appears as the dark central part of the eye.
Explanation:
mark me brainliest please
Which animals have adapted to near-freezing water?
1. whales
2. animals in coral reefs
3. barnacles
4. fishes in polar areas
Answer:
whales
Explanation:
Rna contains the sugar
Answer:
RNA contains the sugar ribose.
Explanation:
An RNA molecule is made of nitrogenous bases (A, U, G, and C), phosphate groups, and the sugar ribose.
NO LINKS! NO PDF'S! NO FILES! JUST ANSWER!!! PLEASE HELP ASAP
A key part of the Watson-Crick model came when Watson realized
that adenine could form hydrogen bonds with thymine and guanine
could form hydrogen bonds with cytosine. This explains why A=T
and G C in Chargaff's rules. Also, these two hydrogen-bonded
nucleotide pairs had the exact same width, so they could form the
rungs of the DNA ladder.
The fact that these pairs could match up only in this way meant that
the sequence of bases in one strand could determine the sequence
of bases in a second strand created from the first. The second strand
is said to be complementary to the first strand. Individual bases are
paired so that the identity of any base determines the identity of the
base paired with it; that is, the complementary base.
This table lists the base abbreviations for bases in a sample of single-
stranded DNA. Fill in the second column with the base abbreviations
that are complementary to the given bases.
I
Answer:
A–T
T–A
T–A
C–G
A–T
G–C
G–C
C–G
T–A
A–T
Explanation:
A always pairs up with T
C always pairs up with G
A - TT - AT - AC - GA - TG - CG-CC - GT - AA - TA usually pairs up with TC usually pairs up with GThese are bases of amino acids called nucleotides sequences. And this helps in the bond of several base pairs to their nucleotide sequence.What is the Watson-Crick model?
In “A Structure of Deoxyribose Nucleic Acid,” Watson and Crick defined DNA as a double helix that contained long, helical strands wound together. In their model, every DNA strand contained personal devices referred to as bases, and the bases alongside one DNA strand matched the bases alongside the opposite DNA strand.
Thus it is clear that the above answer is well explained.
To know more about the DNA refer to the link :
https://brainly.com/question/1328358
son las fallas evidencias de la tectónica de placas de nuestro planeta Y por qué
Answer:
you're speaking in the wrong language here
Explanation:
Which of the following is evidence that cells no longer respond to external factors and may have turned cancerous?
A. New cells replace old or damaged cells.
B. Cell clumps form, crowding existing cells.
C. Dead cells are shed at a more rapid rate.
D. Dormant cells re-enter an active cell cycle.
Answer:
option C will be the correct answer
Dead cells are shed at a more rapid rate is evidence that cells no longer respond to external factors and may have turned cancerous.
What are the cancer cells?Cancer cells are defined as cells which divide continually, forming solid tumors or flooding the blood with abnormal cells. Cell division is a normal process used by the body for growth and repair.
Sometimes this orderly process breaks down, and abnormal or damaged cells grow and multiply when they shouldn’t. These cells may form tumors, which are lumps of tissue.
For more information regarding cancer cells, visit:
https://brainly.com/question/373177
#SPJ2
Why is the reduction in chromosomes number important in meiosis?
Explanation:
Because meiosis creates cells that are destined to become gametes (or reproductive cells), this reduction in chromosome number is critical — without it, the union of two gametes during fertilization would result in offspring with twice the normal number of chromosomes.
Review the chart, which shows the population sizes of three African animals in 1990 and 2000.
Answer:
lion and cheetah populations compete for the food source of zebras ,and lions outcome cheetahs
por favor alguien que me ayude le agradecería mucho
Answer:
ejercicio (2
Explanation:
gracias da coronita
DNA is found in the nucleus of eukaryotic cells and the ribosomes, the location where proteins are made, are found out in the cytoplasm of the cell as show below. Explain why this is a problem and how the cell solves this problem.
Answer:
See the answer below
Explanation:
The DNA of eukaryotic organisms being present in the nucleus while the protein-synthesizing organelle, the ribosome being present in the cytoplasm poses a spatial problem. It means that transcribed DNAs (messenger RNA) in the nucleus would have to somehow be transported to the ribosome in order for the cell to successfully synthesize proteins.
The problem of transporting the messenger RNA is solved by two features of the cell:
The presence of pores in the nuclear envelopThe presence of transport proteins in the nucleusThe mRNA binds to the transport proteins to form mRNA-protein complexes and is transported through the nuclear pores, often with the assistance of ATP.
When spindle fibers do not correctly separate the chromosomes during anaphase we get a condition called _________?
A. Duplication
B. Nondisjunction
C. Translocation
Explanation:
..........................................
Which of the following objects is a good candidate for composting?
Answer:
Banana
Explanation:
It is biodegradable
Humans and the bacteria in their intestines are an example of a mutualistic relationship (both benefit).
True
False
Answer:
true
Explanation:
you get a clean intestine and they get to feed on that. a dark note here is those same bacteria that digest your food, start to digest you when you die :)
Answer:
trueee
Explanation:
Will give brainly if right
Earth's gravity and Bill act on the box in opposite directions. Bill acts with a smaller force than Earth's gravity does. Because these opposing forces are different sizes, they are unbalanced forces.
How do these forces affect the motion of the box?
Answer:
The force with more force (gravity) will have much more effect than the force with less force (Bill) and the box will go in the motion that the greater force makes it go.
Explanation:
I hope I helped
.A jogger with a mass of 81.6 kg is moving at 2.2 m/s. What is the jogger's
kinetic energy
Answer:
89.6Joules
Explanation:
Kinetic energy is 1/2MV^2
Where m is Mass and v is velocity.
M=81.6 v=2.2m/s
K.E= 1/2 × 81.6 × 2.2
= 81.6 ×1.1
K.E=89.6 Joules
circle with center at (-3, 7) and radius 8
Explanation:
Centre of the circle ( h,k)=(-3,7)
radius of the circle (r)=8
Equation of the circle is,
(x-h)^2+(y-k)^2=r^2
or,(x+3)^2+(y-7)=8^2
or,x^2+6x+9+y^2-2y+49=64
or,x^2+y^2+6x-2y+58-64=0
or,x^2+y^2+6x-2y-6=0 is the required equation of the circle
in addition to carbon dioxide, two other major greenhouse gases in earths atmosphere are ?
During translation, a ribosome binds to
O a protein
O mRNA
O DNA
O peptide bond
Answer:
I think it mRNA will be the answer
What enzyme digests fats and oils in the small intestine?
1. Lipase
2. bicaronate
3. gastric juices
4. hydrochlorase
Answer:
Lipase
Explanation:
Which of these describes a difference between viruses and cells?
A. Cells contain protein, and viruses contain only carbohydrates.
B. Viruses have flagella, and cells have only cilia.
C. Cells reproduce independently, and viruses require a host to reproduce.
D. Viruses have membranes made of proteins, and cells have membranes made of nucleic acid.
Answer: C
Explanation:
A is ncorrect becuase viruses do not contain only carbs.
Part D
Based on the the table of rock characteristics and your knowledge of the rock cycle, in which type of
rock (igneous, metamorphic, or sedimentary) would you expect to find bubbles or a smooth, glassy
surface? Why?
HELPPPP ASAP
Answer:
The answer would be igneous. But there are two types of igneous rocks. One is Intrusive, or Plutonic, rocks, and the other is Extrusive. Intrusive rocks crystallize from magma beneath the earth's surface. Extrusive or volcanic rocks crystallize from lava at the earth's surface. Either way, Igneous would have a bubbly, or a smooth, glassy surface.
Explanation:
I did the class on Plato
i need help with this question
Explanation:
photosynthesis________
What is the "body" of a plant called?
Answer:
it's called a tissue right?
hello please help i’ll give brainliest
Answer: Clastic sedimentary rocks are made up of pieces (clasts) of pre-existing rocks. Pieces of rock are loosened by weathering, then transported to some basin or depression where sediment is trapped. If the sediment is buried deeply, it becomes compacted and cemented, forming sedimentary rock.
Explanation:
Discuss the purpose of guard cells and stomata on the leaves of plants.
how can you tell if a memory is false or inaccurate
‼️‼️ PLEASE HELPP!! :D
Answer:
limiting factor whose effects impact a population regardless of the population's density
A worker drives their car 50 miles a week with a fuel efficiency of 25 miles per gallon. If they purchase a hybrid vehicle that
averages 50 miles per gallon, calculate how much gas the worker will save driving the hybrid if they work 50 weeks per year.
-))
A)
They will save 25 gallons of gas per year.
B)
They will save 100 gallons of gas per year.
9
They will save 50 gallons of gas per year.
D)
They will still consume the same gas, but will get to their destination
faster.
Answer: C. They will 50 gallons of gas per year
Explanation:
Did it on Usatestprep