Biology High School

Can someone help me pls.....

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Answer 1

Answer:

Explanation:

Related Questions

the evolutionary mechanism that maintains or increases diversity is?

Answers

Answer:mutation

Explanation:

How might the increase of volcanic eruptions affect Earth?

A. It might produce more ozone in the atmosphere

B. It might decrease temperature across Earth

C. It might increase the carbon dioxide in the atmosphere

D. It might cause the Earth’s surface to absorb more oxygen.

I think that the answer is C but I am not sure

Answers

Answer:

C) It might increase the carbon dioxide in the atmosphere.

Explanation:

Carbon Dioxide is a greenhouse gas, has the potential to increase global warming when a volcanic eruption happens.

Positive feedback is a control system that sends a signal to ________ a response. Please don't give me any links answer only if you know the answer.

Answers

Positive feedback is a control system that sends a signal to ( increase) a response.

Diffusion is the movement _____.

of molecules to an area of lower concentration

of molecules through the cytoplasm of a cell

of water through a selectively permeable membrane

of molecules to an area of higher concentration

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Answer:

of molecules to an area of lower concentration

PLEASE HELP! IM DOING A TEST!!
What do Vaccines do?

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Vaccines train our immune systems to create proteins that fight disease, known as antibodies’

Answer: vaccines help to protect us from a disease by giving our immune system a sample so that when the real disease comes, your body will be ready to fight it off.

Explanation:

Hope that helps!

please help me thank you

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Answer:

3. A 2. B. 1. B

Explanation:

Im not to sure about 1. but other than that your good sorry if this didn't help

PLEASE HELP ME

As polar bears' population decrease, it creeps ever close to extinction This decrease in the population is due to loss of habitat (floating sea ice). This loss of habitat is caused by which of the following?
A. oil spills from ocean drill sites
B. human cities and houses being built in their habitats
C. Global warming
D. introduced can toads which are out competing polar bears for food

Answers

C. Global warming

Because of global warming the ice melts away but the polar bears need the icebergs in order to survive, without the icebergs the polar bears will lead to extinction. If global warming continues the ice will continue to melt and the polar bears won’t have any icebergs.

9. If the concentration of water inside a cell is lower then outside the cell, what will be the net
movement of water molecules be? *
(1 Point)
a) Into the cell.
b) Out of the cell.

Answers

Answer:

a) Into the cell.

Explanation:

The water molecules outside the cell would move into the cell until there is no net movement of water molecules. This process is known as osmosis.

Osmosis is the movement of molecules from a region of higher concentration to a region of lower concentration through a semi-permeable membrane until the concentrations across the membrane are equal. That is, there is no net movement of molecules across the membrane.

Describe gastrulation. Why are the three layers important in development?

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Explanation:

Cells in each germ layer differentiate into tissues and embryonic organs The ectoderm gives rise to the nervous system and the epidermis, among other tissues

1. What phenotypes would you predict in the F2 generation?

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Answer: Round

Explanation:

That's what i put on mine lol

Answer: 75% Round 25% wrinkled

Explanation:

what are the biotic factors that would affect owl populations

a. availability of food
b. carbon dioxide levels
c. new diseases
d. moisture levels

choose two

Answers

Answer:

I would select

A and C

Explanation:

Biotic factors are those of which are living

A reaction time contest is held. While most competitors had an average sound reaction time between 0.17 and 0.20 seconds, one person scored a fantastic 0.0713 seconds on average. The results of this test are shown below. What is the most likely explanation of this unusually low average time?

A. The subject frank a beverage with a lot of caffeine just before the contest.

B. The subject had very warm arms and hands.

C. The subject was an avid video game player.

D. None of the above.

Answers

Answer:

its d bro

Explanation:

none of those make sense its literally d so easy

None of the above options is an explanation of the unusually low average time. Therefore, option (D) is correct.

What is standard deviation?

The standard deviation in statistics is a measurement of how much a group of data may vary or be dispersed. While a high standard deviation suggests that the values are dispersed throughout a larger range, a low standard deviation suggests that the values tend to be near to the established mean.

An average is one number chosen to represent a group of numbers; it is often the sum of the numbers divided by the number of numbers in the group. The average of the integers 2, 3, 4, 7, and 9 is, for instance, 5.

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What will most likely occur if two different species of carnivores compete for the same requirements in an ecosystem

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Answer:

One species would better adapt to fill that niche, and the other species would be forced to leave the ecosystem or die.

Explanation: I promise its right

15. Explain how each of the following creates electrical energy:
a.
Solar
Hydro
Tidal
Wind
OTEC
Biomass
Geothermal

Answers

Solar- technologies convert sunlight into electrical energy either through photovoltaic panels or through mirrors that concentrate solar radiation.

Hydro- a hydraulic turbine converts the energy of flowing water into mechanical energy. A hydroelectric generator converts this mechanical energy into electricity

Tidal- energy is a form of hydropower that works by harnessing the kinetic energy created from the rise and fall of ocean tides and currents, also called tidal flows, and turns into unusable electricity

Wind- turns the propeller like blades of a turbine around a rotor, which spins a generator, which creates electricity

OTEC- plants pump large quantities of deep cold seawater and surface seawater to run a power cycle and produce electricity

Biomass- is burned in a boiler to produce high-pressure steam. This steam flows over a series of turbine blades, causing them to rotate. The rotation of the turbine drives a generator, producing electricity

Geothermal- power plants use steam to produce electricity. The steam comes from reservoirs of hot water found a few miles or more below the earth’s surface. The steam rotates a turbine that activates a generator, which produces electricity

How would Earth be different without the greenhouse effect?

A. There would be more solar energy reaching Earth.
B. There would be more ice on Earth's surface.
C. The oceans would contain more carbonic acid.
D. The atmosphere would contain more methane.

Answers

B more ice on the earths surface. Greenhouse gases don’t tend to block the solar energy, but trap the energy that radiates from the earths surface. Dissolved CO2 becomes carbonic acid. More CO2 results in more carbonic acid. Methane is one of the greenhouse gases.

Why is DNA related to protein

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DNA stores the instructions (genetic information) used to build proteins.

i need help to get the right question because i got it wrong

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Answer:

last one

Explanation:

because they have no nucleus of any membrane bound organelles

help me please!
Describe the difference between a scientific law and a scientific theory.

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Answer:A scientific law describes an observed pattern found in nature without explaining it. The theory is the explanation well tested explanation for a set of observations or experimental results.

Explanation:

What is not a property of water that helps make water essential for life on Earth?

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So the the main forces that keep the water on the surface of the planet are to do with plate tectonics. If the plates were to stop moving, the water probably would eventually be absorbed into the interior, although this process would take a very long time indeed.

What is the advantage/disadvantage of having an O type blood group? Explain your answer in a hospital situation.

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Answer:

O: Type O individuals can donate blood to anyone, because their blood has no antigens. However, they can only receive blood from other type O individuals (because blood with any antigens is seen as foreign).

Please help me with this question

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I’m pretty sure the answer is the second and the last one

I think second one def not the first or third for sure

plants retain their leaves year round.?

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It all depends on the species, some lose all of their leaves for part of the year while others lose their leaves before the next growing season, retaining some during winter or dry periods.

How does the attachment of spindle fibers differ between mitosis and meiosis I?

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in mitosis, the spindle fibers start to divide. in meiosis, these fibers match back up again

In mitosis, the spindle fibers from two poles attach to each chromosome but in meiosis I, the spindle fibers from only ONE pole attaches to the chromosome.

WHAT IS MITOSIS AND MEIOSIS?

Mitosis and meiosis are two kinds of cell divisions. Mitosis involves separation of a single parent cell to produce two genetically identical cells while meiosis involves the separation of a single parent cell to produce four genetically different daughter cells.

WHAT IS SPINDLE FIBER?

Spindle fibers are structures that emanate from centrosome organelles and responsible for the separation of chromosomes during karyokinesis (nuclear division).

During the two cellular divisions (mitosis and meiosis), spindle fibers attach to the centromeres of each chromosome in order to align and eventually divide them.

However, in mitosis, spindle fibers from two opposite poles attach to each chromosome but in meiosis I, the spindle fibers from only ONE pole attaches to the chromosome.

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Unlike strong acids, strong bases do not have any negative effects on the skin. Select one: True False

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Answer:

False

Explanation:

What is the difference in the function of the glycoprotein structures of an HIV virion and the cilia of an animal cell?

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The main functions of retroviral glycoproteins are recognition and binding to the cellular virus receptor as well as fusion of viral and cellular lipid membranes to release the viral particle into the cytoplasm of the host cell.

The function of the glycoprotein structures of an HIV virion is the envelope glycoprotein (Env) performs two functions that are very crucial for replication cycle of HIV and these are

binding to a receptor and a coreceptor by using one of its two noncovalently associated subunitsfusing with the plasma cell membranes,which is mediated by the other

The functions of the cilia of an animal cell are

to move water relative to the cell in a regular movement of the cilialocomotion is the other important function of cilia

What is the main difference between function of cilia and glycoprotein structures of an HIV virion?

The main function of the cilia is locomotion and sensory function and the main functions of glycoprotein structure of an HIV virion is binding to a receptor and fusing with the plasma cell membranes.

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A plant produces seed cones and pollen cones . Is it vascular? To what group of plants does it belong

Answers

A plant produces seed cones and pollen cones. Belong to plant group
phylum Coniferophyta and Yes it is vascular

A plant that produces seed cones and pollen cones is a vascular plant, and plants that produce seed cones and pollen cones belong to the group of plants known as gymnosperms.

What are gymnosperms?

Gymnosperms are a group of seed plants that produce seeds that are not enclosed in an ovary and produce open seeds that are usually borne in cones and include a variety of plant species, including conifers such as pine, spruce, and fir trees, cycads such as palm-like plants, ginkgoes, etc., and the production of seed cones and pollen cones is a vital characteristic of gymnosperms, these seed cones, which are also called female cones, produce seeds that are typically larger and more complex than pollen grains.

Hence, a plant that produces seed cones and pollen cones is a vascular plant and belongs to the group of plants known as gymnosperms.

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Match each relationship description to the correct corresponding relationship

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Answer:

where is the entire question??

Which kind of RNA constitutes part of a ribosome?
Group of answer choices

mRNA

rRNA

tRNA

none of the above

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Answer:

rRNA...................

rRNA is the answer to your question

Answers

Answer:

glycogen

Explanation:

starch is converted to glycogen in our body and stored as energy

Answer:

It's A. glucose

Have a good day!

Explanation:

1. An electromagnetic wave forms when a particle that has an electric charge
experiences which movement?

Answers

Answer:

where the answer chocies

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