4 The graph below shows how the activity of an enzyme changes
over a range of pH values.
Enzyme Activity
Percent of Maximum Activity
100
90
80
70
60
50
40
30
20
10
0
5.0 5.8 6.6 7.4 8.2 9.0
pH
Which of the following conclusions is supported by the data?
A. The optimum pH of the enzyme is 6.6.
B. The optimum pH of the enzyme is 5.8.
C. The enzyme's activity is greater around pH 8.0 than around
pH 5.0
D
The enzyme's activity continually increases as pH increases
from 5.0 to 9.0
Answer:
A
Explanation:
A. The optimum pH of the enzyme is 6.6. - this is true. The optimum pH of the enzyme is where its activity is the highest. On the graph, this is pH 6.6 (activity at 100)
B. The optimum pH of the enzyme is 5.8. - this is false, the activity of the enzyme peaks at 6.6 (100), at 5.8 the activity is 80
C. The enzyme's activity is greater around pH 8.0 than around pH 5.0 - This is false, the activity at pH 5 is 50, whereas at around 8 it is 20.
D . The enzyme's activity continually increases as pH increases from 5.0 to 9.0 - this is false. The activity drops between pH 6.6 and pH 9.
What is a method of calculating density for an irregular object called
Answer:
I believe it is (mass/volume).
Guard cells close the __________ (stomata/epidermis) to prevent excess water loss.
Arrange the stages of embryonic development in the correct order.
Answer:
1. egg fertilized to form a zygote
2. cell division in a zygote to form a morula
3. cell division to form a blastocyst
4. differentiation of cells in the blastocyst
5. development of tissues
6. development of organs
Explanation:
Hope that helps!
Answer:
egg fertilized to form a zygote
cell division in a zygote to form a morula
cell division to form a blastocyst
differentiation of cells in the blastocyst
development of tissues
development of organs
1. All living things are part of a population. True or False
2. Adding more organisms to a population does not affect the existing populations. True or False
3. Populations go up or down depending on the resources available. True or False
4. Populations of tulips do not compete with other organisms. True or False
5. Human populations sometimes cause other populations to move. True or False
6. Which of the following make up populations?
A. Plants
B. Insects
C. Microorganisms
D. All of the above
7. Which of the following is true about populations?
A. Populations always increase.
B. Human populations have doubled in size.
C. Human populations have stayed about the same.
D. None of the above
8. Which of the following determines the success or failure of a species?
A. Rate of reproduction
B. Amount of food supply
C. Number of natural enemies
D. All of the above
9. Which of the following is true about deer and wolf populations?
A. As the wolf population decreases, the deer population also will decrease.
B. As the wolf population increases, the deer population decreases.
C. The deer population has no effect on the wolf population.
D. As the wolf population increases, the deer population also increases.
10. Which of the following is the definition of an endangered species?
A. A population that is no longer alive
B. A population who has large numbers
C. A population that is in danger of becoming extinct
D. A population that can be legally hunted
11. Which of the following does NOT make up a population?
A. plants
B. insects
C. computers
D. bacteria
12. Different populations compete with each other for available resources such as:
A. space
B. nutrients
C. sunlight
D. All of the above
13. Populations of tiny organisms smaller than the human eye can see are called _______.
A. fungi
B. plants
C. parasites
D. bacteria
14. A parasite is a living thing that:
A. makes spaces overpopulated.
B. lives off of another living thing.
C. endangers other living things.
D. resembles a weed.
15. _______ are organisms that are in danger of becoming extinct.
A. Habitats
B. Populations
C. Endangered species
D. Microorganisms
Answer:
1 ans:True
2 ans:False
3ans:False
4ans:True
5ans:True
6ans:D
7ans:D
8ans:D
9ans:B
10ans:C
11ans:C
12ans:B
13ans:D
14ans:A
15ans:C
1. All living things are part of a population, and non-living things are not considered a part of the population. Thus, the given statement is True.
2. Adding more organisms to a population affects the existing populations by increasing the competition for resources such as space, food and water. Thus, the given statement is False.
3. Populations can either go up or down depending on the available resources. If the resources are less compared to the population size, there will be an increased competition for survival. If the resources are plentiful for the population, the population will increase. Thus, the given statement is True.
4. Populations of tulips can compete with other organisms for their nutrients and water if another species exists in their niche and the resources are limited. Thus, the given statement is True.
5. Humans have invaded the habitats of other species by habitat destruction which has caused other populations to move elsewhere for shelter and food. Thus, the given statement is True.
6. All living things are part of a population, which includes plants, insects, microorganisms, animals and humans. The correct option is D.
7. Populations can either increase or decrease depending on the available resources. This is applicable for humans as well. Thus, the correct option is D.
8. Populations can either be successful, that is increase or fail, that is decrease depending on the available resources, existence of enemies and rate of reproduction. Thus, the correct option is D.
9. As the wolf population increases, they will hunt more deers because of which the deer population will decrease. Thus, the correct option is B.
10. Endangered species refers to the organisms whose numbers have decreased to such an extent that they are now on the verge of becoming extinct. Thus, the correct option is C.
11. A population is made up by only the living components of that area. From the given options, all are living things except for computers. Thus, the correct option is C.
12. Different populations compete with each other for their survival for resources such as nutrients, space and sunlight. Thus, the correct option is D.
13. Bacteria are a type of organisms that are invisible to the human eye but visible under the microscope. Thus, the correct option is D.
14. A parasite is any organism that lives on or inside another organism and takes its nutrition also from that organism. Thus, the correct option is B.
15. Endangered species refers to the organisms whose numbers have decreased to such an extent that they are now on the verge of becoming extinct. Thus, the correct option is C.
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Question 7/7
A young ecosystem has few insects and is full of small grasses and herbs. What could we expect to happen next?
A. Next this ecosystem would begin to grow trees
B. The small grasses and herbs would be replaced by lichens and mosses
C. Considering the grasses and herbs have insects, we have reached climax community of this ecosystem
D. Next this ecosystem would develop enough soil for bushes, shrubs, and flowers to take root.
help me please help me please
Answer:
d
Explanation:
Which statement best describes the cell membrane of a living cell?
A) It is composed of proteins and carbohydrates
B) It has the same permeability to all substances found inside or outside the cell.
C) It is a double protein layer that doesn't allow things to pass through it.
D) It selectively regulates passage of materials into and out of the cell.
Which of the following represent an ecosystem?
A: A lake
B: a fish tank
C: a prairie
D: All of these
Answer:
D
Explanation:
all of them are ecosystems:
Lakes/Ponds are a prime example of lentic ecosystems
Fishtanks are are described as a closed artifical ecosystems
Prairies are unique ecosystems that are dominited by grass and other plants.
Answer:
the total amount of matter
Explanation:
In a closed system, the total amount of matter remains the same as it is transferred between organisms and the physical environment, even though its location or form changes.
When one organism consumes another, this matter can change form, but it does not disappear. Eventually, the matter is broken down by decomposers and deposited in the ecosystem's soil, where it can be used by plants. From there, it is able to begin the cycle all over again.
1) The property of matter that describes a solvent is mixing with a
solute to make a solution is known as
A. Contraction
B. Density
C. Solubility
D. Energy
Help!!
Answer:
C. Solubility
Explanation:
Solubility of a substance refers to the ability of a substance called the SOLUTE to dissolve in another substance called the SOLVENT to form a SOLUTION. Matter, which constitutes the solid, liquid and gaseous state, can be the solute, which will get dissolved in the SOLVENT (usually a liquid).
Therefore, according to this question, the property of matter that describes a solvent is mixing with a solute to make a solution is known as its SOLUBILITY
Heredity is the passage of genetic instructions from parent to offspring. The genetic instructions are found in within the DNA, which is contained in inside the nucleus of the cells. The genetic information is passed to the next by sexual reproduction. The information controls the traits that passed down. These include characteristics like eye color and characteristics like blood type. These traits are directly passed down and are not affected by the surrounding the organism.
Answer:
What is your question
Explanation:
The passage of genetic instructions from parent to offspring, known as heredity, involves the transmission of genetic information contained within the DNA.
The DNA is primarily located within the nucleus of cells. During sexual reproduction, genetic material from both parents combines to form a unique set of instructions for the offspring.
This genetic information controls the traits that are inherited, including observable characteristics like eye color and blood type. These traits are directly inherited and are not influenced by the surrounding environment of the organism.
While genetic information provides a blueprint for traits, the expression of those traits can be influenced by environmental factors, such as nutrition, exposure to toxins, or lifestyle choices.
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Lesson 1 student activity: how did this little girl get so sick? Answer key
Answer: please inform me because i don’t see anything
Explanation:
girl where’s the pic of it
each carbon molecule can bond with as many as (blank) atoms or molecule
how many is it
one
four
two
six
pleaseeeee help
Answer:
four
Explanation:
carbon has 4 valence electrons so it can bond with up to 4 other atoms to get its octet.
Which of the following statements about a scientific theory is NOT true?
Answer:
what are the options
Explanation:
can you help me with my new question
Which two conditions are required for cloud formation?
A. high humidity and warm temperatures
B. high humidity and cool temperatures
C. warm tempatures and the presence of particles
D. cool tempatures and the presence of particles
moisture and cooling air
Elements in the same group have similar
O physical and chemical properties
mass numbers
O numbers of clectrons
O numbers of protons
Answer:
Number of protons I think.
I'm not 100% sure though I just kinda remember learning about this. Sorry if I'm wrong.
1) Why is embryonic stem cell research controversial?
2) What is a potential source of stem cells that is not controversial?
Answer:
1.) It is controversial because in order to take embryonic stem cells, the embryo must die. This is killing a baby.
2.) Stem cells can be taken from your own body from your blood stem cells. This kind of transplant would be considered an autologous stem cell transplant and could help heal diseased or damaged bone tissue.
Hope this helps!
someone help me please
Answer:
Community
Explanation:
what is the most likely explanation for the results in the graph
Where’s the graph? You need to have the picture uploaded unless I’m just missing it.
How do enzymes affect the reactions in which they take part?
A. Most enzymes slow down chemical reactions.
B В
Enzymes decrease the activation energy of the reaction.
С
Enzymes increase the activation energy of the reaction.
D
Enzymes are converted into products in the reaction.
is a cell membrane a lipid, protein, or a carbohydrates?
Answer:
According to what i have learned the ANSWER IS
Explanation:
a fluid combination of phospholipids, cholesterol, and proteins.Answer:
Lipid
Explanation:
I saw in my bio book
The picture shows fruit produced by two parents and fruit
produced by one of their offspring.
Which of these best describes this inheritance pattern?
х
O codominance because he fruit color of the offspring is
an intermediate form of the parents' fruit color
O codominance because both parents' colors are
expressed in the offspring
O incomplete dominance because both parents' colors
are both visible in the offspring
O incomplete dominance because the fruit color of the
offspring is an intermediate form of the parents' fruit
color
Answer:
incomplete dominance because the fruit color of the offspring is an intermediate form of the parents' fruit color
Sry if I'm wrong, have a nice day.
The given image shows incomplete dominance because the fruit color of the offspring is an intermediate form of the parents' fruit color. The correct option is D.
What is incomplete dominance?When both alleles of a gene are only partially expressed at a locus, it is known as incomplete dominance.
This sort of gene interaction frequently produces an intermediate or distinct phenotype. Additionally called partial dominance.
Two other types of genetic inheritance are codominance and incomplete dominance. It basically means that no allele can prevent or stifle the production of the other allele through codominance.
Incomplete dominance, on the other hand, occurs when a dominant gene does not entirely block the effects of a recessive allele.
Fruit produced by two parents and fruit produced by one of their children are shown in the photo.
Because the fruit color of the offspring is an intermediate version of the fruit color of the parents, it is incomplete dominance.
Thus, the correct option is D.
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When protists and fungi are compared, which feature is unique to protists?
A. Spores
B. Hyphae
C. Flagella
D. Pseudopods
Answer:
Pseudopods is the unique to protists
Pseudopods are unique to protists.
What are protists?Any eukaryotic organism, that is, an organism whose cells comprise a nucleus, which is not a plant, animal or fungus is known as a protist. They comprises diverse number of organisms, which do not fall under the category of plant, animal, fungi, or bacteria.
Of the given options, pseudopods is confined to protists. They are the finger-like projections arising from the cell of amoeba, it is also known as false-feet. Within the structure, fluid cytoplasm produces and flows, which allows the organism to move. There are many distinct kinds of pseudopods known these are:
FilopodiaLobopodiaAxopodia ReticulopodiaThus, the correct answer is option d, that is, pseudopods.
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How are the particles in this picture below organized?
from high particle motion to low particle motion
from low particle motion to high particle motion
the particle motion is the same in all stages
Answer:
Solid, liquid, Gas
Explanation:
Yeet
Answer:
At this level, students are expected to 'explain the behaviour and properties of materials in terms of their constituent particles and the forces holding them together’ (VELS standards Level 6). However, the fact that students may be able to draw the usual static arrangements of particles in solids, liquids and gases does not mean that they hold a fully particulate view of matter. Research evidence suggests that many students at this age and older still hold a number of alternative conceptions about particles which prove difficult to extinguish. They often lack an appreciation of the very small size of particles, attribute macroscopic properties to microscopic particles, have difficulty appreciating the motion of particles in all states of matter and have problems understanding forces between particles.
Explanation:
sorry for it being long have a good day
Chapter 5 biodiversity test
Answer:
you need more info for me to answer this question....
Explanation:
Describe each method for determining the volume of an object. Explain when
you would use each one.
Answer:
Explanation:
1. "Rectangular prism - Multiply the measurement of the length times the width, then times the height."
2. "Cube - Since all sides are the same measurement, it would be the measurement of any side, or edge, cubed, or a³"
3. "Prism - Find the area of the base, then multiply the area times the height of the prism. Area would be length times width (B), or B x h"
Polysaccharides are
True or False. The more threads a screw has the greater the holding power of the screw.
1. True
2. False
Answer:
True. The more threads a screw has the greater the holding power of the screw.
Explanation:
How is the atomic mass found?
Answer:
The average atomic mass for an element is calculated by summing the masses of the element's isotopes, each multiplied by its natural abundance on Earth. When doing any mass calculations involving elements or compounds, always use average atomic mass, which can be found on the periodic table.is Biology a science which deals about microorgansm exclusively
Answer:
false
Explanation:
biology is the study of every organisms
What happens when a ecosystem is in equilibrium
In equilibrium, an ecosystem has a balance between all organisms and their needed resources which make them to have ideal living conditions for organisms as well as climate for survival.
What is ecosystem equilibrium?Equilibrium, which is a comparatively steady state that maintains population sizes within a reasonable range, is referred to as a healthy ecosystem (not too many of a certain species alive or dead).
When an ecosystem is in equilibrium, all of the organisms and the resources they require are in balance. The environment also has the right climate for survival and excellent living conditions for creatures. The stability of the environment and the organisms is guaranteed by ecological balance. It fosters an environment that is favorable for organism growth and proliferation.
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