Which structure is found in some but not all plant cells?
A. vacuole
B. ribosome
C. cell wall
D. lysosome
Answer:
The answer is A.
PLZ HELP ME!
What is the best description of chromosomes by the end of anaphase II of meiosis?
1.The chromosomes coil and become more compact.
2.The chromosomes split apart at the centromere.
3.The chromosomes reach opposite sides of the cell, incorporating into two haploid nuclei.
4.The chromosomes line up in the middle of the cell.
Answer:
I believe it is 2. the chromosomes split apart at the centromere
The heart sends red blood cells to the _________ to pick up oxygen before sending the now oxygen-rich blood to the rest of the body.
A. Liver
B. Kidneys
C. Lungs
D. Legs and Arms
Answer this question (30 points),
Describe the order of the cell cycle and what happens during interphase, mitosis, and cytokinesis. (Must include all; Must make sense!)
how does the force of gravity affect objects in the universe?
Answer:
The Law of Universal Gravitation states that all objects in the universe attract each other, therefore gravity acts on all objects in the universe.
Explanation:
Answer:
It makes sure that all objects come back to the earth after the leave it, making sure everyone doesn't go flying off into space, and stays on the ground.
Explanation:
do u have stricked perents?
Answer:
yes, yes i do they never le me go out at all
Explanation: thereis no reson for that their just mean
The Nervous System is one of the first systems to develop during the embryonic period. Why do you think this is?
The process of neurulation, which takes place between weeks three following conception, allows the embryo to form the components that will one day become the nervous system. It's important to regulate body functions.
What is embryonic nervous system?The neural crest gives rise to the development of structures in the periphery. At this stage, the early nervous system resembles nothing more than a straightforward tube. It begins from the front of the embryo and continues all the way around to the back. Beginning at day 25, the anterior end will develop into the brain, while the posterior portion will develop into the spinal cord.
The brain is the organ that is responsible for controlling every function of the body. The brain is connected to the rest of the body through the spinal cord, which travels down the back. It contains nerves that are similar to threads and branch out to every organ and area of the body. Messages are transmitted to and from the brain via this network of nerves, which connects the brain to various regions of the body.
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Help me with this plsssss if u get it right u get brainlist PLS HELP
Answer:
3rd one
Explanation:
1. A disease has spread among lily pads in a pond ecosystem. Which is true
about the immediate impact of this disease?
A. Small fish that rely on lily pads for protection will decrease in population
B. The large fish population will increase
C. The water temperature will decrease
D. The frog population will increase
Food Web
2. What would be true if the rabbit population
Diagram
increased?
A. The bacteria population would increase
B. Hawk population would increase, snake
population would decrease
C. Wolf and hawk populations might
increase, grasses would decrease
D. The grasshopper population would
increase
3. What do the arrows represent in the food web?
A. The transfer of energy from one organism to another
B. Where each organism lives in the ecosystem
C. Which animals eat each other
D. Which organisms receive direct sunlight
HOW WAS OIL FORMED? in 4 step plss
Please help me with this
Answer: the plants get there energy and nutrients from the sun/ sunlight, if the hawks were removed from the ecosystem the rabbits and snakes population would grow higher.
Explanation:
1. Describe what bacteria are - their parts, how they can be good, how they can be bad, and the different types.
Pls help will mark Brainlyest or whatever
Answer:
Many human illnesses are caused by infection with either bacteria or viruses. Most bacterial diseases can be treated but some can’t be. Some viruses give a challenge to the body’s immune system because they hid in the cells
Explanation:
Drag each tile to the correct box. Place the items in order from highest to lowest degree of internal organization.
tissue
organ system
organ
cell
↓
↓
↓
What are two reasons Walleye Pollocks gather in large groups?
Why do organisms with one color produce few offspring than those with multiple colors?
Answer:
The answer is literally nature selection.
Explanation:
It just depends on it.
Which is a question which science cannot answer?
How does the moon affect tides on earth?
When will the next earthquake happen?
Why do volcanoes erupt?
How long does it take for the earth to rotate on its axis?
Answer:
When the next earthquake will happen
Explanation:
science cannot predict exactly when something like that will happen.
Michelle and Juan are working on a science project. They take a large glass jar, fill it with some damp paper towels, and then with seeds. They place this jar near a window. After a few days, they see that the seeds germinate and produce stems growing upward. Next, they moisten the towels again and lay down the jar on its side. What are they most likely to observe about the stems after turning the jar on its side?
A: Grow sideways in their new position
B: Start growing downward in their new position
C: Stop growing more than they have already grown
D: Start growing upward in their new position
Is anyone good at science please help for brainliest.
Answer:
eukarya
Explanation:
so long as that stands for eukaryotic
fungi is eukaryotic
other 2 are multicellular, and therefore eukaryotic
if u don't like the first explanation, the second one is process of elimination
archaebacteria is a kingdom, so it can't be that, same with plantae.
fungi isn't a bacteria so it can't be that either
only option remaining is eukarya
Which of the following sets of equipment can be used to analyze the effects of human activity on a watershed?
A) Water testing kit, triple beam balance
B) Water testing kit, beaker, hotplate
C) Hotplate, beaker, graduated cylinder
D) Water testing kit, hand lens, notebook
Answer:
the answer is d
Explanation:
Which organisms are tertiary consumers? Check all that apply.
penguin
cod
elephant seal
killer whale
krill
squid
leopard seal
zooplankton
No links
answer if you want to talk about random stuff, who want to be my friends?
Answer:
killer whales, penguins, leopard seals, and elephant seals
Answer:
Tertiary consumers: killer whales, penguins, leopard seals, and elephant seals
Explanation:
1. Describe the flow of energy to killer whales.
2. If killer whales were removed from the ecosystem, how would it
impact the other organisms?
3. What would you expect to happen if the algae population
increased?
4. Describe how the fish population would change if the seal
population decreased.
The killer whales have a tremendous flow of energy as the whale eats and consume more protein and a nutrient-rich diet.
What is a killer whale?1. A killer whale is also called an Orca and a toothed whale. The whale is the largest member of the killer whale specie and has tremendous flow of energy due to they fed on small and large aquatic forms.
2. If the whale is removed from the ecosystem then the food chain will get disturbed and there will large growth of other species of fish will be in abundance.
3. If the algae increase the oxygen in the lakes and seas will be depleted and other species will be impacted as the fish popuaion may get reduced.
4. if there a change in seal popualtion then popualtion of fish will double itself and again distub the food web.
Find out more information about killer whales.
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1. The location of two hikers is marked on the topographic map to the right as points F and H. What is the elevation of the camper at point F?
2. Each hiker climbed to point G along the path indicated by the arrow. What was the change in elevation for the hiker that took the steepest path to point G?
3.The Vs just below the path of F up to G indicates what landform?
4. What is the purpose of this series of satellite images?
A. To show the path of three different rivers
B. The direction the water flows in the river
C. The changes in the path of the river
5. Weathering (breaking off sediments upriver), erosion (moving the sediments down river) and finally deposition caused the changes in the river.
What helps hold sediments in place to prevent erosion?
Genetic Mutation - Mutations causes a permanent
alteration in the DNA sequence. Research one type of mutation that interests you. Explain the effects to the
individual and ways he/she can cope with the mutation.
Answer:
Veg
Explanation:
hoi
Evidence: Scientists found that the runners who sprinted the fastest had the highest amount of ACTN3 protein molecules in their bodies.
Do you think that this evidence shows that the ACTN3 protein determines running ability? Explain your ideas using the words protein, trait, and feature in your response.
Answer:
yes
Explanation:
EXPLAIN THE ANSWER AND I WILL GIVE BRAINLIEST:
Answer:
I think it might be c
Explanation:
Stomata are composed of two guard cells. These cells have walls that are thicker on the inner side than on the outer side. This unequal thickening of the paired guard cells causes the stomata to open when they take up water and close when they lose water.
sorry if it's wrong
Answer: C. When the guard cells are full of water, they become stiff and hold the pore open.
Explanation:
Some plants lose their leaves and go dormant during hot, dry summers. What happens to these plants' life processes during dormancy? How does this help the plants survive?
What is the complementary base for each of the following? Write the base pairs together.
Adenine? Guanine? Cytosine? Thymine?
Answer:
In DNA
Adenine =Thymine
Guanine ≡Cytosine
In RNA
Adenine =Uracil
Guanine ≡Cytosine
Explanation:
that lines in between the base shows how many bonds are present between Two bases
like,in Guanine and Cytosine 3 bonds are present I.e, triple bond
Why is it important that scientists create man-made neurons for people who were not born with a fully-functional nervous system?
Answer:
Until recently, most neuroscientists thought we were born with all the ... Why did these bird brains add neurons at such a critical time in ... The central nervous system (which includes the brain and spinal cord) is made ... An early progenitor cell does not have the potential of a stem cell to make many different ...
Explanation:
what is the structure identified by the arrow in the diagram below?
A. Chromosome
B. DNA Strand
C. Gene
D. Cell
Answer:
A.}Chromosome
Explanation:
According to the research, a chromosome is the structure identified by the arrow in the diagram below.
What is a chromosome?It is a condensed structure of DNA (deoxyribonucleic acid) present in cells that contains genetic information.
In this way, they have a double structure, composed of two structures parallel to each other and joined by a centromere, called chromatids, in each of the "arms" of a chromatid the genes are located.
Therefore, we can conclude that according to the research, a chromosome is the structure identified by the arrow in the diagram below.
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Zoe takes a boat out of Miami (25° North latitude). Using what you know about the global winds, which direction is she most likely to sail?
A. from west to east
B. from east to west
C. from north to south
D. in a circular pattern
Answer:
d
Explanation: