The two proteins directly involved in muscle contraction are MYOSIN AND ACTIN. The interaction between these proteins is responsible for muscle contraction.
The sarcomere is the basic unit of muscle cells (myofibrils) that mediate muscle contraction both in skeletal and cardiac muscle tissue.
During muscle contraction, myosin and actin proteins slide past each other, thereby leading to sarcomere shortening.
The myosin protein binds to actin filaments and thus myosin acts as a motor protein that drives filament sliding.
Learn more in:
https://brainly.com/question/262544?referrer=searchResults
Respiratory system, circulatory system, what stuck, digestive system, and how do they work together?
Poor people in the United States A) have longer life expectancies B) have children that are at much greater risk of dying during their first year of life C) receive more preventive medical and dental checkups than do members of the middle class because of welfare benefits D) are at greater risk for heart disease and cancer than more afiluent persons w
Marcus grew three rosemary plants. He put one in
direct sunlight, one in the shade, and one in the
dark. The plant in the sun grew the most quickly
and looked the healthiest. Marcus concluded that
rosemary plants grow best in the sun.
How would you evaluate Marcus's conclusion?
O A. His conclusion is valid because his
experiment included a control.
B. His conclusion is valid because he tested
only one variable.
O C. His conclusion is flawed because he did
not perform enough trials.
O D. His conclusion is flawed because it is
based on the appearance of the plants.
Answer:
His conclusion is flawed because he did
not perform enough trials.
Explanation:
i jus took the test
Strands of genetic material floating in the nucleus are refered to as_____
What kind of information can scientist get from soft body parts that they cannot get from hard body parts?
Answer:
Function and working mechanism.
Explanation:
Information such as function and working mechanism etc can a scientist get from soft body parts that they cannot get from hard body parts because these soft body parts perform their work continuously and we can study it through a number of ways and methods. The working mechanisms of hard body parts can't be study because they are not visible to any instrument and occurs inside their structure so that's why function and working mechanism are the information given by the soft body parts.
in an experiment, 100 mice were released
Explanation:
In an experiment, 100 mice were released into a field to which no other mice had access... Which of the following could be explain the change in fur color... The field was primarily composed of light-colored soil and little vegetation, affording gray mice protection from predators
True or False
The cell theory is 1. All living things are made of cells, 2. The cell is the basic unit of life, 3. All cells come from pre existing cells.
Answer:
True
Explanation:
All three are true, I've learned about cells before :D Have a nice day
How is information for a specific protein carried on the DNA molecule?
a. as a sequence of nucleotides
b. in the double helix shape of the condensed chromosome
c. in the ratio of adenines to thymines
d. as a pattern of phosphates and sugars
Answer:
b
Explanation:
Genetic information is carried in the linear sequence of nucleotides in DNA. Each molecule of DNA is a double helix formed from two complementary strands of nucleotides held together by hydrogen bonds between G-C and A-T base pairs. ... In eucaryotes, DNA is contained in the cell nucleus.
The information for a specific protein is being carried on the DNA molecule as a sequence of nucleotides. Hence, option (a) is the correct answer.
Nucleic acids are of two types. They are namely deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA molecule carries the information for a specific protein. They are described as follows:
DNA is the genetic material of the cell DNA molecules undergo a process called transcription to code for codons on mRNA strand These codons tend to pair with tRNA molecule which holds the amino acids The amino acids will then form a chain in the sequence of DNA nucleotides to result in protein formationThus, we can conclude that the information for a specific protein is being carried on the DNA molecule as a sequence of nucleotides. Thus, option (a) is the correct answer.
Learn more about DNA here:
https://brainly.com/question/264225
During the water cycle, water moves from the air to the ground and then back to the air. Which of the following processes causes water to move from Earth’s surface to the atmosphere during the water cycle?
A.
precipitation
B.
evaporation
C.
condensation
D.
crystallization
Answer:
B-Evaporation
Explanation:
I had it on study island and got It correct :)
Help Me Please I will mark Brainliest whoever answer first and quickly
Answer:
To help ribosomes make proteins
Answer:
to help ribosomes make protein
Explanation:
it transports synthesised proteins from the ribosomes in vesicles
WILL IVE BRAINLIEST!!
Describe how the life cycles of the grunion and the horseshoe crab are timed to the rhythm of the tides?
Answer:
Grunion (Leuresthes tenuis): life begins at high tide. During summer and spring, thousands of these fish swim up onto sandy beaches (carried in by high tide). This is called a grunion run, and it occurs ta night during the new moon and full moon when the tide is highest. The females wiggle into the sand and lay thousands of eggs as the males deposit sperm around them. Afterward, they are swept back into the sea. The spawning is timed so exactly that it occurs only on the second, third, and fourth days that follow a new or full moon. After the grunion eggs are fertilized, they incubate for two weeks until the next new or full moon occurs.
Horseshoe Crab (Limulus polyphemus): during late May and early June, vast numbers of horseshoe crabs come together in shallow bays, marshes, and inlets along the Atlantic and Gulf coasts, waiting to come up on the beaches to spawn. The signal to begin is provided by the moon. During the new and full moons, when tide is highest, the crabs come ashore. The female produces a cluster of tiny eggs on her abdomen, and the eggs are fertilized by the male's sperm, and then deposited out in the sand by the female. The next two weeks, the eggs incubate until they hatch during the next full or new moon. When the high water reaches the eggs, they hatch and go out into the ocean.
Explanation:
Answer: Grunion (Leuresthes tenuis): life begins at high tide. During summer and spring, thousands of these fish swim up onto sandy beaches (carried in by high tide). This is called a grunion run, and it occurs ta night during the new moon and full moon when the tide is highest. The females wiggle into the sand and lay thousands of eggs as the males deposit sperm around them. Afterward, they are swept back into the sea. The spawning is timed so exactly that it occurs only on the second, third, and fourth days that follow a new or full moon. After the grunion eggs are fertilized, they incubate for two weeks until the next new or full moon occurs. Horseshoe Crab (Limulus polyphemus): during late May and early June, vast numbers of horseshoe crabs come together in shallow bays, marshes, and inlets along the Atlantic and Gulf coasts, waiting to come up on the beaches to spawn. The signal to begin is provided by the moon. During the new and full moons, when tide is highest, the crabs come ashore. The female produces a cluster of tiny eggs on her abdomen, and the eggs are fertilized by the male's sperm, and then deposited out in the sand by the female. The next two weeks, the eggs incubate until they hatch during the next full or new moon. When the high water reaches the eggs, they hatch and go out into the ocean. brainliest?
Explanation:
1. In the diagram, the arrow #9 is pointing to an organelle called
mitochondria
nucleus
smooth endoplasmic recticulum
endoplasmic recticulum
Answer:
Mitochondria
Explanation:
Why do birds migrate south during the winter?
A. strong northern winds drive them south
O B. an increase in predators drives them south
O C. to find food
O D. to find better nest building materials
Answer:
C. to find food.
Explanation:
It is hard to find food in the winter for animals besides humans. So they need to head south for warmer climates.
FOR 100 POINTS AND I WILL MARK BRAINLIEST!!!!!
Horses have three basic coat colors: red (or chestnut), bay, and black. All the colors are controlled by the interaction of two genes, Extension (E) and Agouti (A). The following combinations produce bay color: EE/Aa, Ee/Aa, EE/AA, Ee/AA. Only two produce black color: EE/aa, Ea/aa. Other combinations of the alleles of these genes plus mutations of others result in many possible coat colors and patterns in horses
Coat color in horses is an example of which type of inheritance?
(1 point)
A. polygenic inheritance
B. dominant inheritance
C. Mendelian inheritance
D. recessive inheritance
Answer:
A. Polygenic inheritance
Explanation:
When the qualities or the attributes are passed from the parent to their progeny is called inheritance. It can be passed either sexually or asexually.
The correct answer is:
Option A. Polygenic inheritance
This can be explained as:
When a trait is regulated by two or more genes is called polygenic inheritance.Dominant inheritance occurs when the qualities from the parent possessing the dominant gene pass to the progeny.According to Mendelian inheritance paired genes assorts independently and are passed from parent to their progenies.Therefore, coat colour in horses is an example of polygenic inheritance.
To learn more about polygenic inheritance follow the link:
https://brainly.com/question/22923
Which statement below is NOT a statement within the Cell Theory?
A. all cells come from other cells
B. all organisms are composed of cells
C. the cell is the basic unit or organization of organisms
D. all cells contain DNA (genetic information)
When working with eye shadow, a color is generally a medium shade that is close to the client skin tone
Answer:
When working with eye shadow, a base color is generally a medium shade that is close to the client skin tone
Explanation:
A color base is used to generate uniformity and smoothness on a surface that will be painted. This technique is used both in artistic paintings and in make-up, as the question above shows, showing that a color base is used on the eyes before the eye shadow is applied. This is because the color base, by standardizing the color of the eyelid, allows the colors of the eye shadow to stand out and appear more pigmented, in addition to allowing the eye shadow to last longer in the customer's eyes.
how do particles of salt and dust affect cloud formation?
Answer:
Cloud Formation can cause cloud droplets which then affect regional climate. In creating the droplets that form clouds and lead to precipitation
When two organisms from the same species compete for resources, it is______ competition.
Answer:
Intraspecific competition
Hope this helps!
Answer:
Competitive exclusion principal applies.
Explanation:
Basically, the chances of both species being equally successful is almost impossible. Chances are one will lose and will either leave empty-handed, injured, or won't live to leave at all.
Write the CODON that corresponds with each amino acid. There may be more than one. The full names are written, but the codon chart only shows the first three letters. proline ______________________ glycine ______________________ valine ______________________ phenylalanine ______________________ histidine ______________________ arginine _________________
Answer:
In protein synthesis, different mRNA codons produce different amino acids by the translation process with the help of ribosomes and tRNA. These mRNA sequences are read in sets of three which are termed as triplet codons. Specific amino acids are produced by different codons, however, more than one codons code for one amino acid. The given amino acids correspond with the following codons:
Proline: it corresponds with four codons
1. CCT
2. CCC
3. CCA
4. CCG
Glycine: it corresponds with four codons
GGT
GGC
GGA
GGG
Valine: it corresponds with four codons
GTT
GTC
GTA
GTG
Phenylalanine: it corresponds with two codons
TTT
TTC
Histidine: it corresponds with two codons
CAT
CAC
Arginine: it corresponds with six codons
CGT
CGC
CGA
CGG
AGA
AGG
mushroom can only be found in dark places . why ?
Answer:
advantage of growing mushrooms in the dark is that darkness preserves the moisture that mushrooms spores need to reproduc
Which plant structure absorbs most of the water and nutrients needed from the soil? tap roots secondary roots root hairs fibrous roots
Answer:
Root hairs
Explanation:
This is because the root hairs are part of root structure that are tubular and have lateral enlongations.
The root hairs increase the surface area of the root and allow for exchange.
They gave direct contact with the soil and then absorb water and nutrients to their increased surface area.
What is true about one strand of DNA?
It contains many chromosomes.
It contains many proteins.
It contains many pieces of RNA.
It contains many genes.
Answer:
it contains many genes.
Answer:
D: It contains many genes
30. Which of the following best explains why enzymes are necessary for many cellular reactions?
A. Enzymes supply the oxygen necessary for the reactions.
B. Enzymes change reactants from solid to liquids during the reactions.
C. The reactions take up too much space in the cell if the enzymes are missing.
D. The reactions are too slow to meet the needs of the cell if enzymes are missing.
Answer:
D. The reaction are too slow to meet the needs of the cell if enzymes are missing
hope it helps
If there is 20% T bases in a DNA sequence, what percentage of A would there be in the same sequence? 10% 20% 30% 40%
Answer:
i believe 20% because T base only connects with A base and vise versa. sorry if i am wrong!
Explanation:
Why does energy transfer not always result in Phase change ?
Answer:
phase change requires more energy to occur
Identify the kingdoms:
A. cell walls made of chitin:
B. cell walls made of cellulose:
C. cell walls made of peptidoglycan:
D. cells walls with no peptidoglycan (pseudomurein):
E. all are heterotrophs in kingdoms:
F. all are autotrophs in kingdom:
G. 3 kingdoms that contain both heterotrophs and autotrophs are:
H. 2 kingdoms that are all multicellular:
I. 2 kingdoms that are all unicellular:
J. 4 kingdoms that have a cell nuclei:
K. 2 kingdoms that do not have a cell nucleus:
M. 2 kingdoms that are all prokaryotes:
N. 4 kingdoms that are all eukaryotes:
P. 1 kingdom that does not have cell walls:
Q. 3 kingdoms that have some motility:
R. 5 kingdoms that do have cell walls:
S. 3 kingdoms that are not motile
Answer: a. fungi, b. plantae, c. eubacteria, d. Archaebacteria, e. animalia, f. plantae, g. Archaebacteria. h. Plantae and Animalia. i. Protista, j. Protista, Fungi, Plantae, and Animalia. k. Eubacteria and Archaebacteria, m. eubacteria and Archaea, n. animalia, plantae, fungi, and protista. p. Protista. q. Plantae , Animalia, sessile, r. Monera, fungi, plantae, animalia, protesta, brainliest??
Explanation:
Angela set out to determine how many genes
control the length of people's eyelashes. She
compared the length of eyelashes from 12 different
people. She measured each person's eyelash by
placing the eyelash on a metric ruler and measuring
the length directly.
What is a possible source of error in her
experiment?
A. She did not collect data from enough
people.
O B. She should have considered the number of
eyelashes on each eyelid in her data
collection.
O C. She may have had a difficult time making
accurate measurements directly.
O D. She did not include a control group.
The statement 'she did not collect data from enough people' is a source of error in an experiment (Option A).
What is the N sample?The N sample refers to the number of objects and/or persons tested during an experimental procedure.
The N sample is fundamental for eliminating the source of variation that may lead to errors.These errors are a consequence of faulty testing of a suitable number (N) sample.In conclusion, the statement 'she did not collect data from enough people' is a source of error in an experiment (Option A).
Learn more in:
https://brainly.com/question/14470673
2. What type of Protist has hair-like coverings that help it move around?
Answer:
Paramecium
Explanation:
Paramecium use cilia, which are hair-like extensions that cover the outside of the cell
Why would the location of resources be a concern?
A) Some areas have more access to resources than others.
B) Human populations are sometimes concentrated in areas that are lacking resources.
C) Areas with fewer resources may need to buy resources from other areas.
D) All of the above
Answer:
D is the correct option
Explanation:
why???
let's see option by option
A)if an area is having a resource then the people around it or near it will access it more which can lead to end of the resource.so there should be rule to use equal resource by everyone
B) sometimes when there is a drought or phenomena in living area so people living there might face issues with the resources they had and now they are gone.so right thing is to move from that place to ankther place where there is resources
C)in areas that are near to desert or hilly areas might not have enough resources near them. so that may cause people to spent money to bring that resources near them or energy waste will be there.so in that cases they should either renovate that place for living or not to live there.
hope it helps you
please mark me as brainlist
If a population is evolving, the allele frequency ________