Answer:
As an example, you are interested in how stress affects heart rate in humans. Your independent variable would be the stress and the dependent variable would be the heart rate. You can directly manipulate stress levels in your human subjects and measure how those stress levels change heart rate.
Explanation:
What is the great difference between male and female?
Answer:
Men are, in general, more muscular than women. Women are just over half as strong as men in their upper bodies, and about two-thirds as strong in their lower bodies
Which of the following is NOT a characteristic of all living things?*
A) use of energy
B) need for oxygen
C) made of cells
D) stable internal environment
Answer:
The answer A. Use of Energy
Match the following organelle with below mention activities.
a. drug detoxification :________
b. catalase :________
c. cytochrome P-450 :________
d. glycosyl transferases :________
e. acid hydrolases :________
f. turgor pressure :________
g. N-linked glycosylation :________
1. Rough endoplasmic
2. Reticulum
3. Peroxisomes
4. Plant vacuole
5. Lysosome
6. Smooth
7. Endoplasmic
8. Reticulum
9. Mitochondria
10. Golgi
a) Drug detoxification ---- SMOOTH ENDOPLASMIC RETICULUM
b) Catalase ---- PEROXISOMES
c) Cytochrome p-450 ----- MITOCHONDRIA AND ENDOPLASMIC RETICULUM
d) Glycosyl Transferases ---- GOLGI APPARATUS SBD ENDOPLASMIC RETICULUM
e) Acid hydrolases ---- LYSOSOMES
f) Turgor pressure ---- PLANT VACOULE
g) N-linked glycosylation ----ENDOPLASMIC RETICULUM
plzz help Is pollination of a flower the “intention of a pollinator? Why or why not?
Some plants self-pollinate, that is, pollen transfer occurs within the same flower or among the flowers on a single plant, usually because the anthers touch the adjacent stigma. The majority of flowering plants, however, depend on the transfer of pollen from other individuals (cross-pollination).
Compare three components of inhaled air with that of exhaled air
Answer:
These are oxygen,Carbon dioxide and water vapour.
Explanation:
The inhaled air has 21% oxygen,0.04% C02,and less water vapour.
Exhaled air contains more C02-4%, 16%-O2 and more water vapour about 6.3%.
The higher 02 of the inhaled air is needed for the supply of lung tissues for the respiration of the cells.Therefore higher volumes is needed to meet up with the larger demands by the cells. The oxygen is needed for cellular respiration which leads to production of more C02 and water vapour in exhaled air.
Therefore, their elevated levels(C02-4%) in exhaled air is due to this mechanisms.This made the exhaled air to be saturated with water vapour
They are the wastes products of cellular respiration in animals. (however the volume of the oxygen in the exhaled air drops to 16% from 21%)because it is used as fuel to burn glucose).
Th volume of C02 in the inhaled air is low because this is not needed for cellular respiration,this it volume of (0.4) compared to the inhaled air.
Generally, the lower levels of C02 is needed so that the diffusion gradients for the movement of C02 out of the lungs is achieved . Hence waste gasses are not retained in the body. Likewise the higher volume of oxygen (21%) is needed for the inwards diffusion gradient of oxygen into the blood for ventilation of the lungs,and aeration of cells.
More water vapour are produced in the cells,therefore they must be diffused out of the cells in the blood.Hence higher percentage in the exhaled compare to the inhaled air
what organisms don't have cell walls but contain chlorophyll
Answer:
Fungi is the answer of your question
What safety equipment is required for the Osmosis Experiment? Justify why the equipment
is needed.
Answer: Wear eye protection, rubber gloves
Handle acid with care and follow CLEAPSS or SSERC guidelines on its use.
The safety equipment which is required for the Osmosis Experiment is as follows:
The goggles protect the eyes. The gloves ensure the safety of hands. Handle chemicals such as acids with extreme care.Follow the systematic guidelines and protocols of the laboratory. What is an Osmosis?Osmosis may be defined as a process through which the molecules of a solvent be inclined to pass through a semipermeable membrane from a region of less concentrated solution into a more concentrated one.
During the whole setup of this experiment, numerous chemicals, as well as, instruments are required. So, in order to ensure your safety, try to follow all the basic and fundamental protocols of the laboratory along with that of the experiment.
Equipment assists or saves you in situation where a certain mistake is has happened. For example, if a drop of acid falls on hand, assume what will happen when you are without gloves? This is the importance of safety equipment.
Therefore, the safety equipment which is required for the Osmosis Experiment are goggles, gloves, systematic protocols, etc.
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if someone says hola to you, would you say como estas or hola back?
Answer:
you can say either of them, but most people usually just say hola and then that's when they say como estas
Explanation:
Answer:
You always greet them first and then ask them how their day is. :)
What are the personal qualities in being a bioligist
Answer:
knowledge of biology.
to be thorough and pay attention to detail.
maths knowledge.
excellent written communication skills.
analytical thinking skills.
excellent verbal communication skills.
the ability to work well with your hands.
the ability to use your initiative
A microscope that is calibrated this way will maintain the specimen in focus when the objective lens is rotated.
● Pointer
● C-mount
●fine focus
●Parfocal
Answer:
The correct option is;
Parfocal
Explanation:
A perfocal lens is one that when in use, the object remains in focus when the objective lens is rotated to change the magnification power of the microscope. That is the when the magnification is adjusted, the objectives remains in focus. The use of the parfocal lens however results in a small but insignificant amount of error in the focus.
John's parents would not let him study while listening to CD's in his room. They told
Kim that he could not concentrate with the background noise. He decided to test this
idea with an experiment on his class. Each Friday his English class took a vocabulary
quiz on 25 new words learned that week. John got his teacher's permission to try his
experiment. On the first Friday of his test he played a rock song in the classroom
while the class took the test and the following week the class took the test with the
normal quiet atmosphere of a classroom. John calculated the average score on the two
vocabulary
Answer:
This question is incomplete; the question is asking to identify the following: independent variable, dependent variable, control group, experimental group, and constants.
The answers are:
Independent variable- BACKGROUND NOISE/MUSIC
Dependent variable- AVERAGE SCORE
Control group- THE CLASS THAT TOOK THE TEST IN A NORMAL QUIET ATMOSPHERE
Experimental group- THE CLASS THAT TOOK THE TEST WHILE PLAYING A ROCK SONG
Constants- SAME VOCABULARY QUIZ, SAME NUMBER OF WORDS, SAME CLASS
Explanation:
Independent variable in an experiment is the variable that is manipulated or changed in an experiment. In this experiment, the independent variable is the MUSIC or BACKGROUND NOISE played during each vocabulary test.
The dependent variable is the variable that is tested or measured in an experiment. It is the variable that responds to changes made to the independent variable. In this experiment, the dependent variable is the AVERAGE SCORE on the vocabulary test.
Control group is the group that does not receive the experimental treatment. It is the group where the independent variable does not change in order to compare with the experimental group. The control group in this experiment is THE CLASS THAT TOOK THE TEST IN A NORMAL QUIET ATMOSPHERE.
Experimental group is the group that receives the experimental treatment. The experimental group in this experiment is THE CLASS THAT TOOK THE TEST WHILE PLAYING A ROCK SONG
The constants or control variables are the variables that are kept constant or unchanged throughout the experiment in order not to influence the experiment's result. In this experiment, the constants include; SAME VOCABULARY QUIZ, SAME NUMBER OF WORDS, SAME CLASS
Is amoeba made up of a single cell or is it a cell itself??
Explanation:
Some things consist of only one cell. They are called unicellular organisms. One of the simplest living things, an amoeba, is made of only one cell. Amoebas (sometimes spelled amebas or amoebae) are too small to be seen without a microscope, but they are commonly found in ponds and lakes
explain the role of carbon in building macromolecules
Answer:
Carbon is the primary component of macromolecules, including proteins ,lipids,nucleic, acids, and carbohydrates. carbons molecular structure allows it to bond in many different ways and with many different elements.
Which element makes up 65% of living things?
Answer:
Oxygen
Explanation:
Oxygen (65%) and hydrogen (10%) are predominantly found in water, which makes up about 60 percent of the body by weight.
Answer: . Oxygen is the element which makes up to 65% of human body mass and every other living thing.
Explanation:
Lions and cheetahs prey on wildebeests that graze in the grasslands of the African savanna. What likely effect would increased rainfall over several rainy seasons have on the populations of wildebeests, lions, and cheetahs?
This question is incomplete because the options are missing; here is the complete question:
Lions and cheetahs prey on wildebeests that graze in the grasslands of the African savanna. What likely effect would increased rainfall over several rainy seasons have on the populations of wildebeests, lions, and cheetahs?
A. All three populations would increase.
B. The wildebeest population would decrease, and the lion and cheetah populations would increase.
C. The wildebeest population would increase, and the lion and cheetah populations would decrease.
D. All three populations would decrease.
The answer to this question is A. All three populations would increase
Explanation:
Grass, wildebeests, lions, and cheetahs are part of the same food chain and due to this a change in grasses due to rainfall will affect the other species. In this context, an increase in the rainfall is likely to increase the availability of grass because grasses thrive and develop better with more rainfall. This change would cause the population of wildebeests to increase due to an increase in the availability of food. At the same time, it is likely cheetahs and lions increase because similar to wildebeest these species will have more food available, which makes it easier to survive and reproduce. This means in this situation the three populations would increase.
Answer:
All three populations would increase.
Explanation:
Toads that live in hot dry regions bury themselves in the soil during the day. How might this be important to the toad? Explain your answer using scientific terms.
Answer:
Toads that lives in hot dry regions bury themselves in the soil in order to lower their body temperature.....
Write Your Own Questions
Think about the relationship between each word pair
below. Then write a question about the first term that
uses the second term as the answer. For the pair
organism, cell, the question could be "What is the
basic building block of all organisms?" Answer: the cell
4. evolution, adaptation
5. observation, data
6. DNA, gene
Answer:
evolution, adaptation :Question: Which process in evolution makes organisms able to survive in their habitat?
Answer: Adaptation
observation, data :Question: What is an outcome of observation generally called that enables to test hypotheses and theories?
Answer: Data
DNA, geneQuestion: What is a sequence of nucleotides in DNA called?
Answer: Gene
What do different proteins do
Explanation:
Amylase, lipase, pepsin, trypsin
Help in digestion of food by catabolizing nutrients into monomeric units
Hemoglobin, albumin
Carry substances in the blood or lymph throughout the body
Actin, tubulin, keratin
Construct different structures, like the cytoskeleton
Insulin, thyroxine
Coordinate the activity of different body systems
Legume storage proteins, egg white (albumin) Provide nourishment in early development of the embryo and the seedling
The bacterial flagellum moves _______. Multiple Choice by rotation that is powered by ATP by rotation that is powered by the proton motive force in a wave-like fashion that is powered by ATP in a wave-like fashion that is powered by the proton motive force in a wave-like fashion that is powered by enzymes
Answer:by rotation that is powered by the motive force
Explanation:
best defines homeostasis
Sentence:
The skill of keeping internal stability in an organism to regroup for environment changes
Word/Synonym:
Equilibrium
The French scientist Jacques Monod famously said, "Anything found to be true of E. Coli must also be true of elephants." How is this statement based on the notion that living organisms share a common ancestor?
Answer:
The correct answer is : prokaryotic organisms like E. coli and higher organisms share common ancestor.
Explanation:
E. Coli is a prokaryotic organism or bacteria. On the metabolic level these organisms share similar homology with the higher organism other than this these organisms also show same core functions with higher level organisms such as elephant.
These similarities suggest that the all the living organisms share a common ancestor. The french scientist Jacques Monod statement "Anything found to be true of E. Coli must also be true of elephants." is also based on this notion.
Write one scientific question about the organism in
the photo.
DONE
Plants store excess sugars as
known as cellulose?
Answer:
TRUE
Explanation:
a man went from his home to market 3 kilometre away with a uniform speed of 4 kilometre per hour and finding the market closed Thi intense turns back with a velocity of 6 km per hour or find average speed of his journey
Answer:
The average speed of his journey is 4.8 kilometre per hour
Explanation:
The given parameters are;
The distance from the man's home to the market = 3 km
The man's speed on his way to the market = 4 km/h
The man's speed on his way back to his home = 6 km/h
The average speed, s = The total distance, d divided by the time, t that elapsed during the journey
s = d/t
We note that time = Distance/Speed
The time it took the man to get to the market = Distance/Speed
The time it took the man to get to the market = 3 km/(4 km/hr) = 3/4 hours
The time it took the man to get to get back to his home = 3 km/(6 km/hr) = 1/2 hours
The total time to and from the market = 3/4 + 1/2 = 5/4 hours = 1.25 hours
The total distance covered by the man = 3 + 3 = 6 km
The average speed, s = 6 km/(1.25 hours) = 4.8 km/hr
The average speed of his journey = 4.8 km/hr.
Relate the length of time it takes for light from stars to reach Earth to distances in space.
Answer:
The time it takes for light from stars to reach us is the distance to the star divided by this speed
Explanation:
light travels at 300,000 kilometers per second or 186,000 per second. The nearest star to us is the sun and it takes about 8.3 minutes for its light to reach us here on Earth
Rock layers are correlated if they both contain the same _____?
Answer:
Rock layers are correlated if they both contain the same fossils.
Explanation:
nucleic acid and carbohydrates are both types of what?
Answer:
Both are type of biological molecules or organic molecules synthesized only by living organisms
Explanation:
In pea plants, tall plant height is dominant over short plant height. If there are 200 short plants in the F2 generation from a cross that followed Mendel’s methods, about how many plants will be tall in that generation?
200
300
600
1,000
Answer: D: 600
Explanation:
In pea plants, tall plant height is dominant over short plant height. If there are 200 short plants in the F2 generation from a cross that followed 600 plants are tall in that generation.
What is Mendel's methods?Mendel's groundbreaking research on inheritance in pea plants 150 years ago led to his emergence as the field of genetics' father.
With a passion for astronomy and plant breeding, Gregor Johann Mendel was a monk and educator. He was born in 1822 and enrolled in a Brünn monastery at the age of 21.
The monastery was a hub for science, religion, and culture with a library and a botanical garden. Mendel started a series of tests at the monastery in 1856 to learn how qualities are passed down from parent to child. At the time, it was believed that children combined the features of their parents.
Therefore, In pea plants, tall plant height is dominant over short plant height. If there are 200 short plants in the F2 generation from a cross that followed 600 plants are tall in that generation.
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What is the function of the golgi apartus ?
Answer:
Processes and packages proteins and substances produced by cell;instruction where to go.
Answer:
transporting, modifying, and packaging proteins and lipids into vesicles
Explanation:
What is activation energy
Answer:
the minimum quantity of energy which the reacting species must possess in order to undergo a specified reaction