Explanation:
well some bacteria are protected by a special coat outside their body which prevents any water loss from the bacteria. Such bacteria can then reproduce after conditions return to normal.
When a sample of food is dehydrated and making it bacteria-free, but in a few days bacteria are found in the food, it shows, bacteria which are there were in the food as endospores.
What are endospores?Endospores are the alternate stage of bacteria, which is the dormant stage, genus Bacillus, and the genus Clostridium, are examples of bacteria that make endospores.
These endospores are resistant to physical and chemical treatments, so this makes it easier for bacteria to survive in stressful conditions. It is a major threat to the food industry which provide heat treatment to the bacteria but they show resistance due to spore formation.
Therefore, when a sample of food is dehydrated to kill all of the bacteria in the food, but microscopic investigations indicate that bacteria are in the food, it is due to endospores.
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what does an animal cell have
Answer:
Animal cells are typical of the eukaryotic cell , enclosed by a plasma membrane
and containing a membrane-bound nucleus and organelles. Unlike the eukaryotic
cells of plants and fungi, animal cells do not have a cell wall.
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Answer:
Animal Cells contain many different things than plant cells one of them being the sell wall, In a animal cell it is a squishy membrane compared to the plant hard outer shell that acts as a skeleton.
Explanation:
Elizabeth was studying the history of the cell theory and the contributions of different scientists. She made this table to compare two of the scientists. X Y observed objects using a microscope observed small organisms using his own version of a microscope called what he observed "cells” called what he observed "animalcules” Which pair of scientists should Elizabeth write instead of X and Y? Schwann and Hooke Hooke and Schleiden Hooke and Leeuwenhoek Virchow and Schwann
Answer:
i just took this test and the answer is C
Explanation:
The pair of scientists should Elizabeth write instead of X and Y is Schwann and Hooke. The correct option is a.
What is the cell theory?A biological hypothesis asserts one or both of the following: an organism is made up of autonomous cells, and its qualities are the sum of those of its cells; the cell is the primary structural and functional unit of living matter.
Theodor Schwann was the scientist who proposed the theory of cells in 1839.
Because it hasn't been verified yet and there are no known means to verify it, the label “cell theory” is acceptable. However, given how many facts support this idea, it is thought to be accurate. It also backs a number of other theories derived from Cell Theory.
Therefore, the correct option is a. Schwann and Hooke.
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What does the Big Bang theory suggest
Answer: The Big Bang theory basically explains how our universe began.
Our universe started with a small singularity, and inflated over the next 13.8 billion years to the cosmos we know
Please correct me if I’m wrong :)
Explanation:
Jenny is preparing a presentation about volume for her science class. She writes down the following notes about volume:
–Volume is constant for solids since they have a shape.
–Volume varies for liquids and gases since they do not have a shape.
–Volume may be measured in many ways.
–Common units of volume include cubic centimeters, milliliters, and liters.
When giving her presentation, Jenny notices there is a mistake in her notes. Which is the mistake in her notes?
Solids do not necessarily have a shape.
The volume for liquids is constant.
Volume is always measured using a graduated cylinder.
Common units for volume also include cubic grams.
Answer:
b
Explanation:
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Answer:
Millimeters
Explanation:
Answer:
D
Explanation:
mm measures length in the smallest amount
What is a hypothesis?
Answer:
basically a guess that scientists make and can be proven right or wrong
Explanation:
Answer:
a guess
Explanation:
list the four main components of air in their molecular form
Answer:
Dry air is a mechanical mixture of nitrogen, oxygen, argon and several other gases in minor amounts.
Explanation:
Describe the importance of chemical elements to living organisms
Answer:
Chemicals make up the bodies of living organisms, all require H20, cells consist of 75% water. Organisms are made of matter (composed of chemical elements). ... An element that is essential for life but required in small amounts.
Explanation:
Chemicals make up the bodies of living organisms, all need [tex]H_2O[/tex], cells that are 75% water. Organisms are made of matter which is made of chemical elements.
What are Chemical Elements?A chemical element is defined as a chemical substance that cannot be broken down into other substances where the fundamental particle of a chemical element is an atom, and chemical elements are distinguished from each other by the number of protons in the nuclei of their atoms. goes.
Carbon, oxygen, hydrogen, gold, silver and iron are examples of chemical elements where each element has only one atomic form. Elements can combine with each other to form a wide variety of more complex substances called compounds where the number of possible compounds is almost infinite where there are probably a million known and more are being discovered every day.
Thus, Chemicals make up the bodies of living organisms, all need [tex]H_2O[/tex], cells that are 75% water. Organisms are made of matter which is made of chemical elements.
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Neurogenesis has been seen in the_____and in the_____.
A. temporal lobe ... hypothalamus
B. occipital lobe ... hippocampus
C. occipital lobe ... primary motor cortex
D. frontal lobe... somatosensory cortex
Answer:
olfactory bulb . . . hippocampus
Explanation:
Neurogenesis has been seen in the olfactory bulb and in the hippocampus. Thus, option B is correct.
What is Neurogenesis?During pre-natal development, new neural cells are formed in the brain by a process called neurogenesis.
The human brain is consist up billons of nerve cells are divided into neurons, glia, and an undetermined cell types.
In the early stage Neurogenesis, separation of neural plate from the ectoderm occur by a folding form called neural groove.
These neural groove fuse to form neural tube, a precursor to the central nervous system (CNS), and the neural crest.
The neural crest have stem cell property become differentiated into multiple leads to development of tissues and organs.
There are two regions in the brain known as the hippocampus and occipital lobe where neurogenesis are seen.
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All living things must be able to___ ,it to make of their own kind
Answer:
reproduce
Explanation:
if not the specis will be extinct
What is on the inside (rungs)of the ladder?
Answer:
The rungs of the ladder or the steps are made up of the nitrogenous purine bases adenine and guanine as well as the nitrogenous pyrimidine bases thymine and cytosine. The rails on either side are alternating molecules of the sugar called deoxyribose and a phosphate.
Explanation:
Answer:
The rungs of the ladder or the steps are made up of the nitrogenous purine bases adenine and guanine as well as the nitrogenous pyrimidine bases thymine and cytosine. The rails on either side are alternating molecules of the sugar called deoxyribose and a phosphate.
What operation is used when simplifying fractions and conversion units?
Answer:
cancellation
Explanation:
A factor in the numerator is cancelled by dividing it by the same factor in the denominator. The quotient is 1, the multiplicative identity element.
╭☞ What operation is used when simplifying fractions and conversion units?
ANSWER:╭☞ Cancellation
Explanation: Because factor in the numerator is canceled by dividing it by the same factor in the denominator. The quienty is 1, the multiplicative element of the identity.For More Information:
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Nucleic Acids functions /short answer
Answer:
Nucleic acid is an important class of macromolecules found in all cells and viruses
Explanation:
One of the most important bioethical issues facing us today is the issue of ____________ , or a loss thereof.
Answer:
The correct answer is - biodiversity.
Explanation:
Bioethics is a part of ethics that has concerns and problems with the continuous use and development of biological tools and technology which has a negative effect on the environment.
It is the single most important bioethical issue today that effect on the biodiversity that includes different type of lives present on earth in the various number of species.
Thus, the correct answer is - biodiversity.
define capillaries.
Answer:
noun
plural noun: capillaries
1.
ANATOMY
any of the fine branching blood vessels that form a network between the arterioles and venules.
2.
a tube that has an internal diameter of hairlike thinness.
Explanation:
which metel is extracted from argentite ore
Answer:
Silver
Explanation:
According to most theories about the evolution of early life on earth, the atmosphere had an abundance of ammonia, methane, and carbon dioxide, shown above. Free energy from lightning could have allowed chemical reactions to occur that generated the precursors to life on earth. Which inorganic molecule(s) are accurately paired with their role in the formation of organic molecules necessary to life?
A) Ammonia would have provided the nitrogen found in the amine groups of amino acid and the nitrogenous bases in DNA.
B) Methane would have provided the hydrogen to form water, a universal solvent for chemical reactions supporting life.
C) Ammonia would have provided the electrons to generate ATP using an electron transport chain within the mitochondria.
D) Carbon dioxide would have provided the oxygen needed to perform photosynthesis, resulting in the production of glucose.
Answer:
A
Explanation:
The correct option would be A.
The presence of ammonia in the atmosphere of primitive earth provided the nitrogen found in the amine groups of amino acid and the nitrogenous bases in DNA. This has been proven through the simulation experiment of the primitive earth's atmosphere by Stanley Miller and Harold Urey.
The water in the primitive atmosphere was formed from the condensation of water vapour from volcanoes that were characterics of the earth's environment while oxygen in itself is not needed for photosynthesis but a by-product of it.
How is a graph similar to a data table?
Answer:
they both hold data and show you a scale
Use the structure of a water molecule to explain why its is polar
How were you able to determine if something was living, once living, or never living (non-living)?
Answer:
Must have lived before.
Explanation:
For an organism to be classified as once living, an object must have been part of a living organism or is now dead. When a flower is plucked from a plant it is hard to distinguish between when it is considered alive and when it is now considered once living. An example of a nonliving object is an apple or a dead leaf.Apr 22, 2013
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All living things are made of matter- the smallest unit of: ____
Answer:
particles called cells
Explanation:
have a nice day and stay safe :}
The image below is a model showing how chromosomes and DNA are structured within a cell.
W
X
Y
Z
Which letter represents a gene?
Answer:
Z is gene.
Explanation:
W is nucleus
X is chromosomes
Y is DNA
What are some non examples of environmental systems.
Machine operating is the non examples of environmental systems.
What is environmental systems ?The environmental system can be defined as an ecological sense as the set of interactions between the elements of the biosphere and it includes the atmosphere, the hydrosphere, the lithosphere, and the ecosphere.
The atmosphere is composed of nitrogen (78%), oxygen (21%), and other traces of carbon dioxide, argon, water vapor, Although the atmosphere is approximately 1,100 km high, the stratosphere and the troposphere are the main atmospheric interactors.
The hydrosphere consist of water in all form like solid, liquid, and gas and dissolved elements like sodium, magnesium, calcium, chloride, and sulfate.
The lithosphere which is a thin crust between the mantle and the atmosphere, it is around 100 km thick, it can be considered in interaction with the biosphere; Main components are oxygen, silicon, aluminum, iron, calcium, sodium , potassium and magnesium.
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In order for a female fruit fly
to have white eyes, what
must be her genotype?
A. XR Xr
B. Xr Xr
C. XR XR
D. Xr Y
Answer:
B
Explanation:
I'm writing this to get 20+
Which contributes to a population at zero population growth? A) Deaths outpace births. B) Births outpace deaths. C) Carrying capacity is exceeded. D) Birthrate equals the death rate.
Answer:
D
Explanation:
both are equal to the is zero pop growth
Select the correct answer.
Which term defines a well-tested, scientifically supported statement that explains how something works?
OA.
hypothesis
OB.
law
Ос.
observation
OD. theory
Reset
Next
Branch that deals mostly with things that were never alive.
I think it's called "Inorganic Chemistry". In which it deals with compounds that do not contain carbon, but can sometimes contain hydrogen.
Hope this helps
You are building a race car.Your goal is to have a car that can go from 0 miles per house to 80 miles per hour in 2 seconds. You are focusing on the car’s?
-speed
-acceleration
-deceleration
-velocity
Answer:
acceleration
Explanation:
acceleration is the change in velocity in a given time. i also took the test and got it right, hope this helps :)
Choose the true statement. Prokaryotic cells are larger than eukaryotic cells . Prokaryotes have membrane-bound organelles. Prokaryotes have distinct nucleus. Prokaryotes are only single-celled.
Answer:
Prokaryotes are only Single Celled
Explanation:
A prokaryotes are single celled or unicellular organism that do not have nucleus or other membrane bound organelle.
Answer:
Prokaryotes are only Single Celled
Explanation:
which two
reservoirs are part of the
short-term carbon cycle?