Answer and Explanation:
There are certain guidelines and instructions created in order to be safe while working in the lab, especially when we are manipulating chemical products or any dangerous objects or substances that might hurt us.
There are many aspects considered in these guidelines that refer to the laboratory rules, behavior rules, security procedures under any inconvenient, the appropriate use of the lab equipment, the handle of chemicals or any other substance, the correct use of instruments, among many others.
Wearing safety apparel is one of the aspects considered in the instructions. This specific rule points to the safety of our body or to avoid any accident. Covering our legs, arms, hands and even toes is very important in case of any chemical, fire, or harmful instrument might fall and hurt us. Hair must be tied, clothing should not be loose, any jewelry should not be worn, feet must be completely covered as well as arms and legs, glasses and gloves must be worn, and etcetera.
21. Name a structure that is in the medial part of the body, located inferior to the lungs and posterior to the intestines. Note: A coronal section would contain this structure and the heart, and it is more caudal than the pancreas.
Answer:
Kidney
Explanation:
The kidney is in the medial part of the body, located inferior to the lungs and posterior to the intestines.
The kidney is the most important excretory organs of vertebrate, which receives blood from the dorsal aorta through the right and left renal arteries and sends out blood through the right and left renal veins. The transverse section of the kidney shows an outer cortex, beneath which is the Medulla and beneath the Medulla, the hollow pelvis of the kidney.
The cortex and the Medulla consist of thousands of nephrons, which are the kidney's structural and functional units. Each nephron consists of a Bowman's capsule, also called renal corpuscle or malpighian corpuscle, with its network of blood capillaries called glomerulus within it. The remaining part of a nephron is a tubule consisting of three distinct portions, i.e., the proximal convoluted tubule, the U-shaped loop of Henle, and a distal convoluted tubule.
The tubule then leads into the pelvis of the kidney via the collecting tubules. The cortex contains only the renal corpuscle and the convoluted tubules, while the Medulla contains the loop of Henle and the collecting ducts. Ultrafiltration of the blood occurs in the Bowman's capsules, and glucose, amino acids, and large amounts of inorganic ions are reabsorbed at the proximal convoluted end from the glomerular filtrate. The sodium salt is actively transported out of the fluid as it passes through the loop of Henle, and finally, water is reabsorbed from the fluid at the distal convoluted tubule and the collecting ducts.
From here, the filtrate passes through the pelvis into the urinary bladder via the ureter. When the bladder becomes full, the urethral sphincter guarding the outlet relaxes so that urine flows out through the urethra.
Urine contains urea, water, and sodium chloride in addition to other compounds. In the presence of antidiuretic hormone, dilute urine is produced. Kidney stones are solid particles formed in the kidneys, which can block kidney tubules.
why must food be digested
Answer:
Digestion is important for breaking down food into nutrients, which the body uses for energy, growth, and cell repair. Food and drink must be changed into smaller molecules of nutrients before the blood absorbs them and carries them to cells throughout the body.
Hoped I helped
Carbohydrates are more easily metabolized than lipids. However, on a gram-for-gram basis lipids provide cells with more __________.
Answer:
Energy
Explanation:
whats a biological system
Answer:
Explanation:
DescriptionA biological system is a complex network of biologically relevant entities. Biological organization spans several scales and are determined based different structures depending on what the system is. Examples of biological systems at the macro scale are populations of organisms.
ANSWER QUICK Which is a biotic factor? A. rotting carcass b. rock c. drop of water d. fire
Answer:
a. rotting carcass
Explanation:
Answer:
The correct answer is A. Rotting carcass
"Rotting" If it wasn't alive it would not be able to rot or die. Biotic means living things or things that were alive.
3. The time it takes for the number of leaves to increase from 15 to 30 is approximately ___ days (1) 2.0 days (2) 2.3 days (3) 2.9 days (4) 3.2
Answer:
(2) - 2.3 days.
Explanation:
found it on a PDF lol
three uses of nylon,polyster,rayon, acrylic
According to the cell theory, which describes cells? All organisms are composed of multiple cells. All cells have the same structure and function. Cells are found in everything on Earth. All living cells come from other living cells.
Answer:
it is not b. but i think its d. not sure if its right.
Explanation:
i chose b. and got it wrong.
The first option is correct All organisms are composed of multiple cells.
The following information should be considered;
The cell theory states that all living things should be composed of one or more cells. The cell is the basic unit of life and new cells could be produced from existing cells.learn more: https://brainly.com/question/20492533?referrer=searchResults
When adding 0.734 and 1.7932, how many significant figures should the answer have?
3
4
05
impossible to tell
Answer:
i believe it is 5
Explanation:
Design a controlled experiment to test the effect of water temperature on a goldfish. Be sure to include your hypothesis, independent variable, independent variable, as well as the experimental and control groups in your experiment
Answer:
The experimental design involves three fish tanks each containing goldfish and sympatric non-competitive species populations composed of 100 individuals (N = 100), which must be maintained in three different temperature treatments.
Explanation:
1- First fish tank: water to the same temperature than its natural environment (for example 25 C)
2- Second fish tank: water temperature 2°C higher than its natural environment (27 °C)
3- Third fish tank: water temperature 2°C lower than its natural environment (23 °C)
Null hypothesis: temperature treatments does not modify the survival of goldfish populations
Independent variable: temperature treatments
Dependent variable: Goldfish survivance over n generations
Negative control: First fish tank (water to the same temperature than natural environment)
Control group: sympatric non-competitive species populations
computer modeling gives scientists the ability to study the interaction of complicated systems without actually conducting an experiment. True or false?
Answer:
true
Explanation:
Thermal energy is the
Answer:
Thermal energy also known as “heat energy” comes from a substance whose molecules and atoms are vibrating faster due to a rise in temperature.
Explanation:
Construct the sequence of events leading from a dietary vitamin C deficiency to symptoms such as bruising and breakdown of supporting tissues.
Rank the events from the first to the last.
collagen breaks down
enzyme prolyl hydroxylase is inactive
the triple helix is inadequately stabilized
defects in tissues that depend on collagen
proline is not hydroxylated
tissue levels of ascorbic acid is low
tissues that depend on collagen are subject to breakdown and bruise.
First Last
Answer:
The question is not complete. Here is the full question:
Construct the sequence of events leading from a dietary vitamin C deficiency to symptoms such as bruising and breakdown of supporting tissues. Rank the events from first to last.
- enzyme prolyl hydroxylase is inactive
- the triple helix is inadequately stabilized
- tissues that depend on collagen are subject to breakdown and bruising
- tissue levels of ascorbic acid is low
- collagen breaks down
- defects in tissues that depend on collagen
- proline is not hydroxylated
Kindly find answer below...
Explanation:
Here is the right sequence of events:
tissue levels of ascorbic acid is low enzyme prolyl hydroxylase is inactive proline is not hydroxylated the triple helix is inadequately stabilized collagen breaks down defects in tissues that depend on collagen tissues that depend on collagen are subject to breakdown and bruisingWhich of the is a characteristic of phloem cells ?
1. What is your claim? (The claim must be accurate, specific, and answer the question - "Are Viruses Alive?". It is usually only one sentence in length.) 2. What is your evidence? (Include information and facts about viruses from the readings yesterday that support your claim.) 3. What is your reasoning? (How do the "Characteristics of Life" notes taken on Monday support or refute your claim? Use specific examples from the notes to connect your claim and evidence together here.)
Answer:
yes virses are alive because all living organisims have to be alive
Explanation:
hope this helps you
What is the main purpose of a scientific investigation
A. to form an opinion
B. to test a hypothesis
C.to persuade with bias
D. To teach a lesson
Answer:
To test a hypothesis
Explanation:
I took the test and got it correct.
Hope this helpped! ;)
Make one or more observations. Create a hypothesis that serves as a rough summary of what has been observed, and then build your forecasts on it. Test the theory and the predictions in a repeatable experiment. Thus, option B is correct.
What is main importance of scientific investigation?The two main objectives of scientific investigation are knowledge production and hypothesis development. Various people and settings are employed to conduct scientific research.
There are numerous methods for conducting scientific research, all of which rely on the collection of various types of data.
A plan for raising questions and putting potential solutions to the test is a scientific research. Observations are frequently the first step in a scientific research.
Observations are typically followed by questions. A hypothesis is a possible response to a scientific query based on the state of science today.
Therefore, to test a hypothesis is the main purpose of a scientific investigation.
Learn more about scientific investigation here:
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Describe what the results would look like if the data supports your hypothesis.
Answer:
Please see below
Explanation:
In such a case, the data will indicate a positive trend towards the outcome predicted in the dependent variable. However, the data has to show a significant difference (as indicated by p value) between the measured variables for it to be a valid support of the hypothesis.
How many years of cumulative evolution separate chimpanzees from humans?
A. 7-8 million years
B. 2-3 million years
C. 130-140 million years
D. 130-140 thousand years
E. 14-16 million years
Answer: A. 7-8 million years
Explanation:
Chimpanzees are considered the closest species to humans and so a logical question to ask is why they haven't evolved as well or rather why they are still chimps and we are human.
The reason is that our ancestors split and went on different evolutionary paths. This split happened sometime 7 - 8 million years ago which therefore represents the years of cumulative evolution that separates chimpanzees from humans.
what structural differences makes adenine and guanine different from cytosine, thymine, and uracil? (figure 2-24)
Answer:
Nitrogenous bases have two distinct families known as purines and pyrimidine, nitrogenous are the building blocks or monomer units of the nucleic acids.
The major and significant difference between purines and pyrimidines is the difference in their structures-
The purines are divided into two different bases called adenine and guanine and each of them have a two-ringed structure formed with a 9-membered molecule and 4 nitrogen atoms which makes it a large in size than purines.
The pyrimidines are divided into 3 bases that are cytosine, uracil, and thymine and all these have only one single ring of six members and 2 nitrogen atoms. These are smaller in size.
In the crystal matrix of ordinary salt, the sodium and chlorine are held together by:_______
A. peptide bonds.
B. covalent bonds.
C. ionic bonds.
D. hydrogen bonds.
E. nonpolar bonds.
Answer:
C. ionic bonds
Explanation:
In the crystal matrix of ordinary salt, the sodium and chlorine are held together by: ionic bonds.
Ionic compounds result from electrostatic interactions between ions, which often results from the net transfer of one or more electrons from one atom or group of atoms to another, that is, it is the attraction of oppositely charged ions (cations and anions) in large numbers to form a solid. .
Sodium chloride is an ionic compound made up of family 1 sodium metal and the nonmetal chlorine.
When sodium gives up its valence electron, the positively charged sodium ion is produced; chlorine accepts this electron and the negatively charged chlorine ion is formed.
The two ions have 8 electrons in their outer shell and attract each other, as they have opposite charges. The resulting compound is electrically neutral, that is, it has no charge.
Ionic compounds are crystalline solids, soluble in water, and conduct electricity when molten or in solution. These characteristics are due to the type of bond that holds them together.
Therefore, we can conclude that common salt is an ionic compound because it is made up of cations and anions, where the sodium and chlorine are held together by ionic bonds.
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its important to know that science is:
Answer:
Science is "Integral to critical and inevitable facets of contemporary existence."
Explanation:
Science seems to be an exploratory, as well as informative or innovative system. It's indeed crucial in determining although many daily lives which include food, energy, medication, infrastructure, luxury, and much more. Science enhances a person's existence at all levels, from an excellent rating to worldwide problems.Functions of the organ systems of the body.
Classify each of the following physiological functions with the correct body system.
A. Receives sensory input
B. Helps regulate metabolism
C. Produces hormones
D. Produces gametes
E. Maintains posture
F. Differs in males and females
G. Supports the body
H. Initiates motor output
I. Produces heat
J. Produces blood cells
1. Skeletal System
2. Muscular System
3. Nervous System
4. Endocrine System
5. Reproductive System Reset
Answer:
Helps regulate metabolism- Endocrine System.
The production of certain hormones regulate the process of digestion.Gastrin,secretin and cholecytokinin are the hormones of the alimentary canal which regulate digestion. In addition,testosterone,oestrogen,progesterone,and sugar regulatory hormone -insulin are other hormones involved in metabolism.
Produces hormones-Endocrine System
This contains certain gland which secretes hormones directly into the blood stream,to be carried to the target part of the body.The endocrine glands are located in different part of the body;The hormones secreted are proteins or cortisol.
Supports the body-Skeletal System
This is the system which contains bones and cartilages for the attachment of ,muscles for locomotion and stability.it form the framework of the body.Therefore the interaction of the muscles and bones is refers to as the skeletal muscular system.The bones can not provide support without the presence of muscles.
Produces heat-Muscular System- this stems from shivering.it refers to spasmodic contraction of the muscles due to drop in body temperature to generate heat.it is an auto-regulatory mechanism to rise the body temperature when this drops below baseline.
Differs in males and females-Reproductive System
This is designed the male organ as an intromittent organ(Penis) with two testis for sperm production,and the opening as(Virginia) in female
Maintains posture - Muscular System.
it is the contraction and relaxation of the muscles which ensures posture.The musculo-skeletal systems which ensures posture,stability in animals ensures the bones and muscles are aligned.
Produces gametes-Reproductive System-Ovaries in females and testis in males are the sites of ova and sperms respectively as the gametes
Receives sensory input- Nervous System- the PNS send sensory inputs to the CNS for coordination of the Nervous system.These inputs are sent from the receptors.
Produces blood cells-Endocrine System
This is exemplified with the thymus which helps in the production of white blood cells,from its location in the neck
Explanation:
An ecologist decides to study the effect of pathogens of the pollinator of a particular plant species on its reproductive success. Which level of ecological study does this variable represents?
Answer:
pp
Explanation:
In the carbon cycle, all animals must consume
other organisms because
A. they can not absorb enough carbon from water.
B. they cannot absorb carbon directly from the air.
C. they are in competition with plants for available
carbon.
D. they require carbon to perform photosynthesis.
Answer:
B. they cannot absorb carbon directly from the air.
Explanation:
Carbon cycle refers to the series of processes through which carbon is exchanged between living and non living components of the environment. During the carbon cycle, animal organisms feed on one another in order to obtain energy, a characteristics that makes them HETEROTROPHIC.
Unlike plants, animals cannot perform photosynthesis, which turns solar energy into biomass (carbon-based). Plants get their carbon source (CO2) directly from air via the stomata on their leaves. Animals, on the contrary, cannot get carbon this way, hence, they need to feed on other animals to get their carbon and energy source.
In 3.a (above) you mutated one letter. What role do you think the redundancy of the genetic code plays in this type of change?
Answer:
It has a role of mutation and eventual evolution in the field of genetics.
Explanation:
The changing of one letter represents whether or not the amino acid encoded by the triplet base will be affected. Redundancy in code means there are multiple codes that will be translated to the same amino acid, so a change/mutation in that position does not alter the protein produced.
Does fertilizer make a plant grow bigger?
Answer:
yes and no
Explanation:
It depends on the plant and what you want to do to it.
Example some fertillzer can make the plant grow bigger and some make it produce stuff like tomatoes.
how do energy and information cells relate to eachother
Answer:
well you could be aleck and say they are both cells
Answer:active transport, to contract muscles, to make proteins, and in many other ways.
Explanation:
How can statistics be used in a scientific study?
Explanation:
these are statistic be used in scoentific study.
What of the following statements is true of a microbiome?
Which independent variable affected the organism’s health positively in each of the trials? Why do you think this occurred?
Answer:
Please see below
Explanation:
The variable that had the most affect was the salinity. The sea animals have a tough time trying to survive under highly saline sea water, as this upsets their internal environment as well, in turn affecting their bodily functions and overall health too. The reason behind this was probably that they were used to an environment of high levels of salinity and low levels of light.