Answer: In contrast, animal cells have many, smaller vacuoles. Plant cells have a cell wall, as well as a cell membrane. ... Animal cells simply have a cell membrane, but no cell wall.
Explanation:
Which of the following is not a central theme of biology?
Answer:
A non central theme in biology is The study of chemical reactions.
Explanation:
The five central themes of biology are structure and function of cells, interactions between organisms, homeostasis, reproduction and genetics, and evolution.
Dan made the table shown to describe two different relationships between animals.
Relationship a: One organism lives inside the organism it feeds off.
Relationship b: No organism is harmed.
Explain.
identify an independent variable in the experiment graphed in figure 1. based on the data in figure 1, identify a control that shows that sepin-1 rather than something else in the culture medium is inhibiting that growth of the cancer cells
Answer:
Explanation:
This question is incomplete because of the absence of the graph. However, the independent variable of an experiment is the variable that is not affected by any other variable during the course of the experiment but is however intentionally or unintentionally predetermined by the researcher conducting the experiment. For example, in an experiment to determine the effect of age on blood pressure; age is the independent variable because the age class/groups of the individuals to be used can be determined by the researcher also the age cannot be affected by the pressure (the age of a person cannot change because of an increase/decrease in blood pressure).
Also, the control of an experiment is the variable/data in which other data in the same experiment are compared to. For example, in an experiment to determine the effect of a substance (such as sepin-1) on the growth of cancer cells (using a culture medium), the control can be the culture medium that was not given any substance or the culture medium that was given a pure substance of no effect like water. This means, in this control culture medium, the cancer cells will continue to grow normally while that growth will be compared with what is seen in the culture medium treated with sepin-1.
Determine what kind of variation is related to the following trait: Skin color.
A. Only Environmental variation
B. Only Genetics
C. Neither
D. Both Genetics and the Environment
How is the frequency of a wave measured?
Answer:
Wave frequency can be measured by counting the number of crests (high points) of waves that pass the fixed point in 1 second or some other time period. ... The SI unit for wave frequency is the hertz (Hz), where 1 hertz equals 1 wave passing a fixed point in 1 second.
Explanation:
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The frequency of a wave measured is by counting the number of crests.
What is the frequency?The hertz (Hz) is the SI unit for wave frequency, and 1 hertz is equal to 1 wave passing a fixed point in 1 second.
The time for one cycle, or the period, is multiplied by the reciprocal of one to obtain the frequency. The unit of frequency is Hertz or Hz. The 'time base' (seconds per division) from the oscilloscope controls is used to calculate the period.
The number of wave crests that pass a specific point in a specific amount of time, as measured in physics. The hertz (Hz), which equals one crest per second, is the most widely used frequency measurement unit.
Therefore, the number of wave crests (high points) that pass a fixed point in a second or another time interval can be used to calculate the frequency of a wave.
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Which of the following best describes the transfer of phosphates and the impact on the environment and human health
8. The nervous tissue is formed from which of the following embryonic tissue?
A. Mesoderm
B. Endoderm
C. Epidermis
D. Ectoderm
What are the similarities and differences between the different atmospheric layers?
Answer:
Compare and contrast the various layers of the atmosphere
The atmosphere has 4 layers: the troposphere that we live in near the surface of the earth; the stratosphere that houses the ozone layer; the mesosphere, a colder and lower density layer with about 0.1% of the atmosphere; and the thermosphere, the top layer, where the air is hot but very thin.
Explanation:
help pls its really quick literally Imbo
Which product is missing from the Kreb's cycle?
Pyruvate + Oxygen → _________ + 2 ATP
ATP
Oxygen
Water
Carbon dioxide
I think is D Carbon dioxide
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Where is the youngest crust material found on Earth?
A. at the tops of
mountains
B. on the continental shelf
C. under continental
centers
D. along subduction
zones
E. at mid-ocean ridges
Answer:
I think the youngest crust on earth would be the mid-ocean ridges
Explanation:
I hope this helps with your question!
is glycerol polar or nonpolar
Answer:
non-polar
Explanation:
Glycerol has three polar Oxygen-Hydrogen bonds but these are attached to hydrocarbon chains which are relatively non-polar.
The illegal killing or capturing of wild animals is called .
Answer:
poaching
Explanation:
Answer:
The second option in the drop down menu, poaching.
Explanation:
hope it helps
did mary and jim prove their hypothesis ? explain your answer
Answer: Based on their observation and the data gathered, Mary and Jim hypothesized that the rock contains limonite. However, their experiment did not provide results that support the hypothesis. Instead of registering a yellow streak similar to limonite, the rock sample registered a brown streak.
Martha bought a six pack of soda on Thursday. She promised her neighbor, Mr. Jimmy, that she would save the cans for him. What are they doing to help our ecosystem?
Answer:
They are potentially reducing and reusing, if he intends to do something with the cans.
Explanation:
1. Reducing by saving cans
2. Might reuse the cans for something like art maybe, reusing
how many electrons does anos atom typically need in order to be stable?
Answer: 8 electrons
Explanation:
True or False: Decomposers replenish nutrients into the "abiotic" phase of a nutrient cycle.
Answer: true
Explanation:
9)
What is a major difference between prokaryotes and eukaryotes?
A) Prokaryotes have no nucleus.
B) All prokaryotes cause disease.
C) Eukaryotes contain more mitochondria.
D) Nucleic acids are founds only in eukaryotes.
Answer:
The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not. So i would think that it is A
Explanation:
Hope this helps!
Describe the biological needs for cells to be surrounded by a membrane that is selectively permeable for different materials.
What is an atomic nucleus
Answer:
The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom
Explanation:
Answer:
A atomic nucleus is a a region of protons and neutrons in the middle of an atom.
Name all the organ systems that you would use for walking from the front of the school to your
irst period class. Then describe why you are using each of those systems.
(Hint: use multiple systems in answer)
Answer:
Skeletal system and Nervous system.
Explanation:
All the organ systems we would be used for walking are:
The muscular system and Nervous system are used to walk from the front of the school to the first-period class.
• The muscular system has a specific function. This is used to walk because skeletal muscles control our body movements.
• Muscles are attached to bones so muscles cause the movement of those bones.
• So skeletal muscles involved in some activities are walking, running, writing and etc.
• The nervous system also very important which is comprised of the brain, spinal cord, nerves.
• Skeletal muscles are voluntary muscles without the brain's permission they can't work.
• So the Muscular system and Nervous system both are very important for movement because our body movements are regulated by the nervous system.
Give two examples of fermentation in real life.
Answer:
yeasts or other microorganisms breaking down a substance, or a state of excitement.
Explanation:
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ESSOIS. 2. Two populations of mice living in the same forest are separated by a large water-filled ditch. After a rainstorm, flooding brings several mice from one population to the other population. When the mice from the first population reproduce with members of the second population, which of the following are likely to occur?
A. All the offspring will die as a result of reproductive mutations.
B. The offspring will be forced to leave the second population .
C. The offspring will be genetically identical to their parent from the first population
D. The offspring in the second population will have greater genetic variety
Answer:
I can't be certain but I believe that the answer is D
Explanation:
No explanation, sorry!
Answer:
It is D
Explanation:
I took a test on this, and this was on it. And i got a 100% on it. So yes it is D.
What are organelles?
PLEASE HELP ME!!! (Number 9)
Answer:
all of they fill up space on each one the atoms are different but the all have atoms (solid atoms super close liquids kinda close gasses not close at all and they move alot)
Explanation:
what is the similar between external and internal fertilization?
Answer:
Internal fertilization is the process when the syngamy (union of male and female gamete) occurs inside the female body after insemination using copulation. In contrast, External fertilization is the syngamy outside the female body, that is in the outer environment especially in water bodies.
Explanation:
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HELP PLEASE! WILL GIVE BRAINLY!! Living organisms are unified by major characteristics. Which of the following describes the unifying property of homeostasis? A. Living organisms adapt to their environments b. Living.organisms maintain fairly constant internal conditions c. Living organisms use transform energy d. Living organisms grow and reproduce
Answer:
A
Explanation:
If I'm wrong I'm sorry.
I had this question.
Answer:
A
Hope this helped, if not, don’t hate.
What is the most common molecule in living things? A. CO B. He с. А,о D. CO
Answer:
proteins
Explanation:
compare and contrast a cell membrane and cell wall.
Answer:
here
Explanation:
a cell wall is only found in plant cells to provide protection and structure a cell membrane is found in plant and animal cells and its basically a filter and decids what gets in and out of the cell
HELP ME PLEASE PLEASE!!!!!!!! Discuss how technology and engineering are not always beneficial to the environment by explaining how technologies are contributing to the extinction of species.
Your teacher has given you a sample of soil to examine. Would you use a dry mount or a wet mount to examine it? Explain your reasoning.
The teacher has given you a sample of soil to examine. Dry mount because it won’t make the soil wet or turn it into “mud”.
What is soil ?The soil is a mixture of different components that contains minerals, organic matter, and living organisms, it is a loose sediment. there are different types of soil like Clay Soil, Sandy soil, Loamy Soil, Silt Soil
soil contain of 45% minerals, 50% spaces or voids and 5% organic matter, it involve in performing many important functions such as Providing a growth medium for the plants, Acts a modifier of the earth’s atmosphere and it is One of the most crucial components of the biosphere
The formation of soil occur by weathering of rocks. it leads to Solid rock can weather occur in three way such as Mechanical Weathering, Chemical Weathering, Biological Weathering
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