Answer:
4
Explanation:
No positive tests
4. M
Positive for starch only
Why were the giant tortoises of the Galapagos Islands considered the better
evidence for evolution for each of the islands in which they were located?
Answer: Galapagos tortoises are actually not of the same species most of them are sub-species of a larger older cousin though they are all classified as the species Galapagos tortoises but are not the same a lot of the sub-species have adapted to be able to live on specified island because not every island in the Galapagos is the same.
Explanation:
Types of River basin diseases
Answer:
Answer down below v
Explanation:
The types of diseases that river basins carry are waterbone diseases.
They are cause mostly from contaminated water from which is housed in the river.
Some major diseases cause by water are:
cholera, diarrhoea, dysentery, hepatitis A, typhoid, and polio.
Hopefully this helped. If it didnt, I am sorry. Anyways, have a wonderful day! :)
define limnology? definition
Answer:
the study of biological, chemical, and physical features of lakes and other bodies of freshwater.
Vuestion
II Pause
Q Zoom
Question
Normal
Polysaccharides, nucleic acids, proteins, and lipids are
that are synthesized from a small collection of basic precursors.
O A
macromolecules
OB.
monomers
Ос
enzymes
Oo
ions
Answer:
Water, organic molecules, and inorganic ions are the constituents of cells. Water constitutes the greatest fraction of the three, accounting for almost three-quarters of the total mass of a cell. The interactions between the various components of a cell and its water content is key to biological chemistry.
Sodium, potassium, magnesium, calcium, phosphate, and chloride, are among the chief inorganic ions of a cell, and represent not more than 1% of the cell mass. But the organic molecules are the really novel components of a cell. Most such organic compounds belong to one of the following molecule classes:
Carbohydrates
Lipids
Nucleic acids
Proteins
Within individual cells, there exist thousands of different types of macromolecules, or organic compounds. These will be different, even among the cells of the same person. The variations are more extensive among different people. Macromolecules - proteins, nucleic acids, and polysaccharides - are formed by the polymerization of hundreds of their low-molecular-weight precursors - amino acids, nucleotides, and simple sugars.
The diversity among macromolecules evolves from the vast potential to form different combinations of the 50 or so common monomers which make up a macromolecule. These macromolecules may constitute up to 90% of a cell’s dry weight. It is possible to comprehend the basic chemistry of a cell’s makeup by understanding the functions and structures of the four major types of organic compounds, or macromolecules.
Carbohydrates
Carbohydrates are the basic building materials and nutrients of the body. Simple sugars and polysaccharides compose this group. Glucose is an example of a simple sugar that is an important cellular nutrient. Decomposition of the simple sugars by chemical reaction generates cellular energy as well as initiating the synthesis of other constituents of a cell. The polysaccharides, or complex carbohydrates, represent the form that sugar takes when it is stored. Polysaccharides are the structural components of a cell. Moreover, polysaccharides and other sugars may function as markers for certain cellular recognition processes, including the intracellular movement of proteins.
Lipids
Lipids are hydrophobic molecules. They are a highly efficient form of energy storage, and are major constituents of the cell membrane. They are important in cell signaling, function as the starting point for various biosynthetic processes such as the synthesis of estrogen and testosterone. Some lipids are able to convey signals from cell surface receptors to targets in the same or other cells. Phospholipids contain two fatty acids joined to a polar head group. Besides the phospholipids, cells have glycolipids and cholesterol.
Nucleic acids
Nucleic acids store and transmit hereditary data. DNA and RNA represent the informational molecules of a cell. DNA plays a crucial role as the genetic material of humans and many other species. RNA takes part in various cellular activities. Messenger RNA (mRNA) transports information from DNA to the ribosomes, where they are involved in synthesizing proteins. In addition, ribosomal RNA and transfer RNA are involved in protein synthesis. Other RNA molecules process and move both proteins and RNA. RNA can also catalyze chemical reactions, such as those involving the synthesis of proteins and the processing of RNA.
Proteins
Proteins play an important role in most of the tasks that an organism performs. Proteins carry out the work of a cell, directed by the genetic information carried by the nucleic acids. A cell holds many thousands of proteins, which function as a cell’s structural elements, storing and transporting small molecules, transmitting data among cells, and defending the body against the onset of infections. But proteins also function as enzymes that accelerate most chemical reactions. In this manner, proteins guide most cellular activities.
Explanation:
Evidence that lead Darwin to develop his theory of evolution of species by natural selection includes all of the following, EXCEPT
a. The Galapagos Islands have a unique species found only on one volcano- the pink iguana.
b. Finch species on the Galapagos Islands resembled a common species on the mainland, but were clearly differentiated by traits related to feeding habits.
c. Geologists had demonstrated that the Earth was billions of years old.
d. English gardeners had long known that it was possible to breed many novel varieties of vegetables from a single species just by selecting and reproducing individuals with specific desirable traits. e.
e. Geologists had discovered that Earth's surface was in constant, but slow, motion.
Answer: B
Explanation: the explanation is in the answer
A car accelerates from rest to a speed of 24 m/s in 8 seconds. What is the car's average acceleration?
A 16 m/s2
B. 24 m/s2
C 3 m/s2
D. 192 m/s2
[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
We know that,
[tex]a = \dfrac{v - u}{t} [/tex]where,
a = avg acceleration v = final velocity = 24 m/su = initial velocity = 0 m/st = time taken = 8 secso, let's find avg acceleration :
[tex]a = \dfrac{24 - 0}{8} [/tex][tex]a = \dfrac{24}{8} [/tex][tex]a = 3 \: \: m {s}^{ - 2} [/tex]hence, correct choice is C
If a car accelerates from rest to a speed of 24 m/s in 8 seconds, then the car's average acceleration would be 3 meters / second², therefore the correct answer is option C.
What is acceleration?The rate of change of the velocity with respect to time is known as the acceleration of the object.
As given in the problem if a car accelerates from rest to a speed of 24 m/s in 8 seconds, then we have to find out what is the car's average acceleration,
The average acceleration of the car = final velocity - initial velocity/time
= 24 -0 /8
= 3 meters / second²
Thus, the correct answer is option C.
To learn more about acceleration from here, refer to the link;
brainly.com/question/2303856
#SPJ2
Try to compare the landscape differences between the surface of the moon and the surface of the earth.
Answer:
The surfaces of the Earth and the Moon are very different. The surface of the Earth is dynamic because it changes constantly. This is caused by movement of crust, erosion by water and wind, and living organisms. Plate tectonics changes the positions of the continents, reshapes ocean basins, and creates mountain ranges and volcanoes.
Explanation:
Many sea turtles die each year by drowning in fishermen's nets.
taken to protect these turtles?
Answer:
It's estimated that some 4,600 sea turtles are killed by fishing nets and hooks every year in U.S. waters.
Explanation:
Answer:
The estimated amounted of turtles killed are 4,600 a year. The cause are that fisher man leave there nets and hooks out in the ocean. That makes the turtles get trapped or seriously injured.
Explanation:
HELP ME OUT PLEASE!
15. Compare in your own words, at least 2 differences in plant and animal cells.
Answer: animal cells are much smaller than plant cells and plant cells tend to grow over a certain period of time.
Explanation: animals and humans are much alike but if you add a plant to this equation than plants animals and humans are nothing alike.
Can someone check my answer real quick? Roberto has been asked to work at a secondary crime scene. What will he MOST likely do?
I'm not sure whether it would be C or D.
Answer:
its c
Explanation:
brainliest
Answer:
He will explore other places where crimes may have occurred.
Explanation:
A secondary crime scene is in some way related to the crime but is not where the actual crime took place.
Also, I took the quiz :)
The endocrine system releases into the blood, which control some of the major body processes, such as growth and development.
Answer:
Explanation:
Endocrine glands release hormones (chemical messengers) into the bloodstream to be transported to various organs and tissues throughout the body. For instance, the pancreas secretes insulin, which allows the body to regulate levels of sugar in the blood.
Why don't plant cells undergo cytolysis?
Answer:
Cytolysis does not occur under normal conditions in plant cells because plant cells have a strong cell wall that contains the osmotic pressure, or turgor pressure, that would otherwise cause cytolysis to occur.
Explanation:
:)
Answer:
Plants have a natural defense mechanism against cytolysis because they contain a tough cell wall. When a plant cell is placed in a hypotonic environment and water rushes in, the cell wall exerts an opposing pressure on the cell membrane, preventing it from expanding or rupturing. i hope this helps
Explanation:
please what are the definitions to these in your own words
Which of these would be considered a "basic" science?
Group of answer choices
developing a Coronavirus vaccine
discovering the structure of DNA
identifying genetic diseases
using forensic techniques to identify a
Answer:
tapon mo module mo para wla kanag module.Answer:
for me it is developing A coronavirus vaccine, because I am genius
5514998054 ps:- 123456
Answer:
What is this for don't get it
What can you deduce about the number of mitochondria in liver cells?
Mitochondria are intracellular organelles that supply energy to the cells of the body. There are around 500 - 4000 mitochondria per cell in the liver, accounting for approximately 18% of the total cell volume.
Advantages of cross pollination as compared to self pollination
Answer:
It assures that there is genetic variety within each plant species.
Explanation:
If the statement is true, select True. If it is false, select False.
During photosynthesis, plants produce carbon dioxide.
O True
False
Answer:
true
During photosynthesis plants produce carbon dioxide through their respiration
Answer:
True. Plants do produce carbon dioxide during photosynthesis.
Help ASAP I will GIVE BRANIEST. PLEASE
Select the options below that plays a role in the transport of small molecules into the cell
0 a. Carriers and proteins
O b. transport proteins and Peptidases
c. Permeases and carriers
O d. transport proteins, permeases, and carriers.
O e. Peptidases and permeases
i think its d
cauz i have read
identify the general characteristics of plants
Muscles are specialized cells found in animals. Why would it be necessary for a muscle cell to have a higher percentage of mitochondria than other cells in the body?
Answer:
it needs energy to do mechanical work and respond quickly
There is an inherited syndrome in humans in which the cells cannot convert food into energy. Some of the
symptoms include muscle weakness and a lack of coordination. Which malfunctioning organelle within the cell can
cause this condition?
centrioles
lysosomes
mitochondria
ribosomes
How many isomers are possible starting with C3H6. In
other words how many different structures are possible?
Answer:
There are two isomers with the formula C3H6.
One of them is propene, CH3CH=CH2.
The other is cyclopropane.
Explanation:
hope it helps:)
An electron present in the innermost orbital shell of an atom if absorbed energy and is kicked out in to
the outer higher-energy shell. What can happen?
Select one:
O a. the electron will come back down to the lower energy shell but will not release any type of energy (heat/light)
Ob. the electron will always remain in the higher energy shell to release radioactivity
Oc. the electron will always remain in the higher energy shell forever to release heat and light energy
Od. the electron will come back down to the lower energy shell and make the atom behave as an isotope
Oe. the electron can come back down to the lower energy shell releasing heat and light energy seen as bioluminescence
Answer: When the electron changes levels, it decreases energy and the atom emits photons. The photon is emitted with the electron moving from a higher energy level to a lower energy level. The energy of the photon is the exact energy that is lost by the electron moving to its lower energy level.
Explanation:
hopes this helps
The electron can come back down to the lower energy shell releasing heat and light energy seen as bioluminescence.
According to the Bohr theory, atoms absorb energy and move from a lower to a higher energy level. The energy absorbed during this transition is equal to the difference in energy between the two levels.
This innermost shell is called the ground state of the atom while the higher energy level is called the excited state. Since atoms are unstable in the excited state, the atom quickly returns to the ground state, emitting energy in the form of heat and light in the process.
Learn more: https://brainly.com/question/3964366
Question 14 (3 points)
Listen
Mitochondria and chloroplasts are similar in several structural and functional aspects.
Which statement of comparison is false?
Both are double membrane-bound energy organelles.
Both carry out energy transfer processes via electron transport systems.
1:
Both utilize the same electron carriers.
Both increase internal membrane surface area to volume to enhance efficiency.
5:
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hi guys
hope this helps
Both the chloroplast and the mitochondrion are organelles found in the cells of plants, but only mitochondria are found in animal cells. The function of chloroplasts and mitochondria is to generate energy for the cells in which they live. The structure of both organelle types includes an inner and an outer membrane
Whale belongs to which class of kingdom animalia?
Answer:
Mammalia is the class of Whale.
What are some of the organelles in a plant cell? In this is in science
Answer:
In particular, organelles called chloroplasts allow plants to capture the energy of the Sun in energy-rich molecules; cell walls allow plants to have rigid structures as varied as wood trunks and supple leaves; and vacuoles allow plant cells to change size
Explanation:
plsss brainliest bayun
Answer:
Nucleaus, membrane, mitochondria, endoplasmic reticulum, and Golgi Apparatus
Explanation:
The main function of the excretory system is to _______ the human body.
The kidneys remove waste from the _______ .
The lungs remove _____ waste.
Answer:
The main function of the excretory system is to eliminate wastes from the human body.
The kidneys remove waste from the blood .
The lungs remove carbon dioxide waste.
Explanation:
Hope this helps :)
are the new strands identical to the original segment of DNA?
Answer:
DNA creates "daughters" by using the parental strands of DNA as a template or guide.made in the 5' to 3' direction. Each newly synthesized strand of DNA (daughter strand) is made by the addition of a nucleotide that is complementary to the parent strand of DNA.
Explanation:
Hope this helped and breainlest please !