Answer:
13.7 billion years ago
Explanation:
Answer:
That was billions of years ago.
3. Vaccines stimulate the body to produce...
Answer:
Antibodies
Explanation:
lets your body figure out how to be immune to the disease.
Hope that helps
Which of the following cell types is haploid?
O body cell
O sperm cell
O skin cell
O liver cell
Answer: sperm cell
Explanation: haploids only contain one set of chromosomes (not paired)
The..............is the sense organ most associated with balance.
1)Nose
2)Skin
3)Ear
4)Eye
5)Tongue
Answer and I will give you brainiliest
How are electrons distributed around the nucleus?
Answer:
they move in orbitals or subshells
Explanation:
Answer:
In layers of orbits around the nucleus. The first orbit is two electrons and the rest are 8 electrons each except the last orbit which are the valence electrons.
Explanation:
Which greeting uses a formal style? Dear Auntie Mae, Hey Gregor, To Sixth Grade Students: Howdy Youth Group–
Answer:
To Sixth Grade Students: this is correct i got dear aunt may wrong on my unit review and showed this was the correct answer
Explanation:
Answer:
C
person above me is correct
give them brainliest :)
Explanation:
choose all that apply.
The heart ___.
pumps blood to the body.
has four chambers.
is part of the cardiovascular system.
is made of skeletal muscle.
works with the respiratory system.
(you can pick more then one!)
The person above is right!
arm
QUESTION 9
Cooler air can hold less water than
warm air.
ast
O TRUE
old air
een
O FALSE
and
QUESTION 10
cheferant in many
Answer:
9 true
Explanation:
Emily's dog has puppies. 3 puppies are brown and 2 puppies have spots. The difference in their coat color is known as A trait B feature r variation
Answer:
What
Explanation:
Answer:
This is known as A. Trait
Which factor contributed most to the development of the cell theory?
The factor that contributed most to the development of the cell theory is the advancement in technology.
With advancements in the area of technology, significant improvements were made to the primitive microscope initially invented by the likes of Hans and Zacharias Janssen, and more powerful microscopes like the electron microscopes were invented. With these, details of the cell could be observed and all the organelles could be studied, including how the cell divides (give rise to another cell).
Still on the technological advancement, the discovery of differential staining materials made it possible to differentiate several biological phenomena as they relate to the cell.
Thus, by extensively studying the cell using microscopes and differential staining dyes, the cell theory was developed by the likes of Theodore Schwann, Mathias Schleiden and Rudolf Virchow.
More on the cell theory can be found here: https://brainly.com/question/5597701
What effect do ocean currents have on a biome?
Answer:Ocean currents act much like a conveyor belt, transporting warm water and precipitation from the equator toward the poles and cold water from the poles back to the tropics. Thus, ocean currents regulate global climate, helping to counteract the uneven distribution of solar radiation reaching Earth's surface.
Explanation:
Answer:
erosion on the sea side of it a way of drainage when it rains and moist soil near it
Explanation:
Carbonized fossils are made of:
O the carbon remains of the original organism
O carbon which replaced the plant or animal
O a cast of coal
O a mold left in coal
Answer: are the substance left after the organism was buried.
Explanation: I know this is not a answer but the carbon is rapidly buried until its rock.
please help a girl out with these 2 questions thanks lol
Answer: first photo in my opinion would be d or c, but mostly d!
2nd photo would be either a!
hope i helped!
How is energy tansferred between stages of the carbon cycle?
Drag and drop the words or phrases that best complete the
paragraph.
Enzymes are important
in your cells that
important biochemical reactions such as
building muscle or breaking down large food molecules.
Enzymes are often called a
because they
can
the speed of an biochemical reaction.
Scientist often measure how quickly biochemical reactions
occur in cells. The time it takes for a biochemical reaction to
start and finish is known as the reaction
rate
proteins
decrease
catalyst
increase
carbohydrates
speed up
Answer:
Look below
Explanation:
Enzymes are important proteins in your cells that speed up important biochemical reactions such as building muscle or breaking down large food molecules. Enzymes are often called a catalyst because they increase can the speed of an biochemical reaction. Scientist often measure how quickly biochemical reactions occur in cells. The time it takes for a biochemical reaction to start and finish is known as the reaction rate
Enzymes are important proteins in your cells that speed up important biochemical reactions such as building muscle or breaking down large food molecules.
How are enzymes important for biochemical reactions?Enzymes are often called a catalyst because they increase can the speed of a biochemical reaction. Scientists often measure how quickly biochemical reactions occur in cells. The time it takes for a biochemical reaction to start and finish is known as the reaction rate.
Enzymes share two key characteristics with all other catalysts. First, they speed up chemical processes without being eaten or irreversibly changed by the process. They also speed up reactions while maintaining the chemical equilibrium between reactants and products.
Therefore, the enzyme acts as a catalyst to speed up a biochemical reaction.
Learn more about enzymes, here:
https://brainly.com/question/17292676
#SPJ5
Why must the ribosomal subunits, made in the nucleolus, assemble in the cytoplasm
and not inside the nucleus?
(a) Because translation occurs in the cytoplasm
(b) Actually, the ribosome IS fully assembled inside the nucleus
(c) So that the subunits can fit through the nuclear pores, given that if the
ribosome is assembled inside the nucleus, the fully assembled ribosome would
not fit through a nuclear pore
(d) None of the above
1. How does the cell membrane allow animals to move without rupturing the cells in the body?
2. How does a cell membrane allow some molecules to pass right through the membrane?
3. Why is it important the some molecules (oxygen and carbon dioxide) be allowed to pass through the cell membrane without the use of a transport system?
4. How does the cell membrane allow the cell to reproduce into two separate cells?
5. In the lab, small bubbles would merge with the larger bubbles. How does this property of cell membranes demonstrate how a vesicle can transport substances from one organelle to another?
6. Cells require molecules that cannot simply pass through the cell membrane. Explain how the cell can use proteins to transport these molecules across the cell membrane.
.
Explanation:
1)The cell membrane functions as a semi-permeable barrier, allowing a very few molecules across it while fencing the majority of organically produced chemicals inside the cell. Electron microscopic examinations of cell membranes have led to the development of the lipid bilayer model (also referred to as the fluid-mosaic model). The most common molecule in the model is the phospholipid, which has a polar (hydrophilic) head and two nonpolar (hydrophobic) tails.
2) simple diffusion across the cell plasma membrane. The structure of the lipid bilayer allows small, uncharged substances such as oxygen and carbon dioxide, and hydrophobic molecules such as lipids, to pass through the cell membrane, down the concentration gradient is , by simple diffusion.
3) some molecules, such as carbon dioxide and oxygen, can diffuse across the plasma membrane directly, but others need help to cross its hydrophobic or however, because they are charged the polar, they can't cross the phospholipid part of the membrane without help .
4) during fission a copy of the DNA is made and attached to the cell membrane as well. As this cell elongate in preparation for fission, the two DNA copies are pulled apart two opposite ends of the cell. New membrane material is deposited between the two ends of the cell, and a new wall grows between them .
5) UMASS STEM-ED From Bubbles to Cell Membranes Workshop. Bubble ... dynamic nature which can't be properly appreciated in a static textbook. ... the small thread through one of the straws.
6) example of passive transport and active transport across a cell membrane so, cell membranes are semipermeable meaning they have control over what molecules can or cannot pass through. Some molecules can just drift Inn.
what do both prokaryotic and eukaryotic cell contains a)linear chromosomes b)nucleus c) cytoplasm d)membrane bound organelles
Answer:
c) cytoplasm
Explanation:
match these to the correct definitions pls
Answer: one set - sex cells / two sets - somatic
Explanation:
Organic compounds are used as buildings?
Explanation:
your answer is true, organic compounds are used as buildings
Where in the cell does the second stage of cellular respiration take place?
Answer: the matrix
Explanation:
Fruit flies (Drosophila melanogaster) with a wild-type phenotype have gray bodies and red eyes. Certain mutations can cause changes to these traits. Mutant flies may have a black body and/or cinnabar eyes. To study the genetics of these traits, a researcher crossed a truebreeding wild-typed male fly with a true-breeding female fly with a black body and cinnabar eyes. All of the F1 progeny displayed a wild type phenotype. Which of the following is correct about the traits observed?a. Gray body and cinnabar eyes are dominant.b. Eye color is sex-linked.c. Body color is sex-linked.d. Gray body and red eyes are dominant.
Answer:
d
Explanation:
The correct answer would be that gray body and red eyes are dominant.
The wild type trait is represented by gray bodies and red eyes while the mutant trait is represented by black body and/or cinnabar eyes. A cross between the wild type and the mutant only yield F1 offspring with wild type phenotype. This, thus, means that the wild type trait is dominant while the mutant trait is recessive.
Since the wild type trait is depicted by gray body and red eyes, it means that the gray body and red eyes traits are dominant while the black body and cinnabar eyes are recessive.
The correct option is d.
Which the following should go where the X is?
A
pharaohs
B
farmers
astronomers
D
generals
Answer:
B
Explanation:
Rosa eats a peanut butter sandwich for lunch. Peanut butter contains a lot of protein, and bread is mostly starch. Rosa plans to go for a run later this afternoon. Rosa is breathing normally.
What does she need from the food she ate and the air she breathes so that she can go on her run? How do Rosa’s body systems work together to get the molecules she needs into her cells? How do her cells use these molecules to release energy for her body to run?
Answer:
........................
what are the effects on the ecosystem and what is being done to help
Answer:
A lot of ecosystems are dying because of deforestation and climate Change, but there are some organizations out there like 4ocean that clean up the ocean and restore the enviorment.
Explanation:
"The bird has brown spots on its wings" is an example of an inference,
True
False
What was difficult about measuring the 3x5 card? Why?
Answer:
can you give me some answers
Explanation:
Which pathway would occur faster, and why is this advantageous?
Answer:
ok
Expl
yes because it is ...-.-..---.-.---./.-.-.-./-..--...-..-
Air at 1 atm was closed into a rigid container. It was then heated to a temperature of 911
K. The pressure inside the container was measured to be 2.7 atm. What was the initial
temperature of the gas (in Kelvin)? Round answers to the ones place.
Answer:
Final temperature, T2 = 2460 Kelvin.
Explanation:
Given the following data;
Initial pressure = 1atm
Final pressure = 2.7atm
Initial temperature = 911K
To find the final temperature, we would use Gay Lussac's law;
Gay Lussac law states that when the volume of an ideal gas is kept constant, the pressure of the gas is directly proportional to the absolute temperature of the gas.
Mathematically, Gay Lussac's law is given by;
[tex] PT = K[/tex]
[tex] \frac{P1}{T1} = \frac{P_{2}}{T_{2}}[/tex]
Making T2 as the subject formula, we have;
[tex] T_{2}= \frac{P_{2}}{P_{1}} * T_{1}[/tex]
Substituting into the equation, we have;
[tex] T_{2}= \frac{2.7}{1} * 911[/tex]
[tex] T_{2}= 2.7 * 911 [/tex]
Final temperature, T2 = 2459.7 ≈ 2460 Kelvin.
Match the words to the definitions
Answer:
The male sex cell match with sperm.
The new cell that forms from fertilization match with zygote.
A type of reproduction in which the genetic materials from two different cells combine, producing an offspring match with sexual reproduction.
suggest two other features in which the sugarcane flower might different from insect pollinated flower
Answer:
Explanation:
Sugar cane is wind pollinated so the pollen is light weight, non-sticky, flowers producing pollen and ovules are extended above the plant so the pollen can be easily picked up by the wind and filtered out of the wind by the stigmas of the "female."
