Answer:
Cells divide to replace old, dead, or damaged cells. Cells also divide so living things can grow.
Explanation:
Hope this helped!!
Name the primary producers of grassland ecosystem
Answer:
Explanation:
Grasses, shrubs, trees, mosses, lichens, and cyanobacteria are some of the many producers found in a grassland ecosystem.
Which process forms fossils?
A. variation
B. adaptation
C. mineralization
no links real answer
Which organisms are producers?
Select all correct answers.
a. mushrooms
b. frog
c. grass
d. tree
Answer:
Grass and tree
A producer is a living thing that makes its own food. All food chains begin with producers.
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What do red blood cells carry?
Answer:
red blood cell carry oxygen
hope it helps.
Answer:
Red blood cells carries oxygen .
hope it is helpful to you
During meiosis, which of the following allows for variations in alleles in the gametes
formed?
A) homologous chromosomes stay together
B)chromosome crossover
C)daughter cells identical to parent cells
D)Genetic drift
Answer:
D. I'm pretty sure at least
PLEASE HELP WITH MY BIOLOGY
What type of physical evidence is acquired through the senses
help quick
Answer:
Empirical evidence is information acquired by observation or experimentation.
Explanation:
I hope it will help you
How could a change in the DNA sequence of a single gene affect an organism?
The organism would likely no longer be able to produce offspring.
The gene could code for carbohydrates instead of proteins.
The function of a protein encoded by the gene could change.
DNA could change into RNA.
Previous
Answer:
C .
Explanation:
Sharks are the top predator in a marine ecosystem. By eating them, sharks maintain a balance in the population of smaller organisms. If the shark’s population were to decrease, the smaller organisms would increase greatly, interrupting the food web. Which of the following relationships is MOST similar to the relationship between the shark and the marine ecosystem?
Answer:
what are the options ??
Explanation:
A chromosomal alteration in which one or more
pairs of homologous chromosomes fail to separate
normally during meiotic cell division is known as... 1.)an addition
2,) crossing over
3.) nondisjunction
4.) translocation
Can you define these words?? Thanks!
Cellulose
Chlorophyll
Chloroplast
Bryophyte
Pterophyte
Gymnosperm
Cone
Angiosperm
Flower
Cuticle
Vascular tissue
Xylem
Phloem
Roots
Root hairs
Stems
Leaves
Photosynthesis
Answer:
Cellulose - It is described as a complex carbohydrate that forms the main constituent of the cell wall in most plants and is important in the manufacture of numerous products like pharmaceuticals, textiles, etc.
Chlorophyll - Any of a group of green pigments that are found in the chloroplasts of plants and in other photosynthetic organisms such as cyanobacteria.
Chloroplast - An organelle found in the cells of green plants and in photosynthetic algae, where photosynthesis takes place.
Bryophyte - Any plant of the division Bryophyta, defined "sensu lato" to comprise the mosses, liverworts, and hornworts, and corresponding to all embryophytes that are not vascular plants.
Pterophyte - It is characterized as any fern(seedless plant) that is a division of Pteridophyta.
Gymnosperm - Any plant such as a conifer whose seeds are not enclosed in an ovary or those who don't bear seeds or fruits. Example; Cycads.
Cone - A cone-shaped flower head of various plants like banksias and proteas.
Angiosperm - Any flowering plant characterized by having ovules enclosed in an ovary and thus, produces fruits, as well as, seeds.
Flower - A reproductive structure in angiosperms and often conspicuously colorful and typically including sepals, petals, and either or both stamens and/or a pistil.
Cuticle - A noncellular protective covering outside the many invertebrates and plants.
Vascular tissue - The complex tissues that consist of various cell types and primarily responsible for transporting liquid and other nutrients throughout the plant or animal body.
Xylem - A vascular tissue in the land plants primarily responsible for the distribution of water and minerals that are taken up by the roots and also the key component of the wood.
Phloem - A vascular tissue in land plants primarily responsible for the distribution of sugars and the nutrients manufactured in the shoot.
Roots - The part of the plant which is generally underground that anchors and supports the plant body. It absorbs and stores water and nutrients, and in some plants is able to perform vegetative propagation.
Root hairs - The rhizoid of a vascular plant or a tabular outgrowth of a trichoblast, hair-forming cell on the epidermis of a plant root.
Stems - The above-ground stalk of a vascular plant that supports individual parts of a plant like leaves, flower, fruits, etc.
Leaves - The green and flat organ that represents the most prominent feature of the most vegetative plants.
Photosynthesis - The process by which plants and other photoautotrophs convert light energy into chemical energy. For example; Plants use air, water, along with sunlight to synthesize their food(carbohydrates and waste oxygen).
If a father has the genotype DD and a mother has the genotype dd, what would be the child’s genotype
Why is it important for your brain to control many functions automatically?
Answer:
The brain controls what you think and feel, how you learn and remember, and the way you move and talk. But it also controls things you're less aware of — like the beating of your heart and the digestion of your food.
Think of the brain as a central computer that controls all the body's functions. The rest of the nervous system is like a network that relays messages back and forth from the brain to different parts of the body. It does this via the spinal cord, which runs from the brain down through the back. It contains threadlike nerves that branch out to every organ and body part.
Explanation:
If you brain does not, or is unable to perform multiple tasks automatically, you could have trouble breathing on your own, your heart could have problems, even your thought process, movement, and digestion could malfunction. Which could cause a multitude of complications.
Hope this helped, have a great day/night :}
In order from youngest to oldest, what is most likely the correct order for the rock layers??
Answer: 1, 5, 2, 3, 4.
Explanation: Using process of elimination layer four should be the oldest and the only one that has layer four last is number 2. Therefore I assume it is number 2.
When something acts against something, causing it to have less of an effect what is it called?
Answer:
Counteract
Explanation:
You are describing the definition of the word Counteract so that must be the answer.
I think it’s tree am I right?
Answer:
mm yes tre.........
Explanation:
what is the number of cells at the beginning of meiosis
A scientific study demonstrated that rat mothering behavior impacts the stress response in their pups. Rats that were born and grew up with attentive mothers showed low activation of stress-response genes later in life, while rats with inattentive mothers had high activation of stress-response genes in the same situation. An additional study that swapped the pups at birth (i.e., rats born to inattentive mothers grew up with attentive mothers and vice versa) showed the same positive effect of attentive mothering. How do genetics and/or epigenetics explain the results of this study
Answer and Explanation:
Regarding genetics, the results of the study show that the mother's genetic material does not influence the behavior of rats in times of stress or in the biological responses of rats to these stressful moments. This is because the mice inherited their mothers' genes, but did not show the same results in a stressful situation when they were raised with different mothers.
Regarding epigenetics, however, we can see that the mothers' behavior in relation to the care of rats managed to provoke epigenetic changes that prevented or stimulated the expression of genes linked to stress, in these rats. The rats that were raised with attentive mothers showed a low expression of stress-linked genes, regardless of the biological mother they had. In addition, it is possible to notice that this modification is permanent, since the rats presented this same type of response throughout their lives.
Why is sexual reproduction associated with meiosis? meiosis reproduces identical DNA meiosis is the complete process of sexual reproduction meiosis helps to generate variability meiosis produces gametes
Answer:
meiosis produced gametes
Explanation:
During sexual reproduction, meiosis generates genetic variation in offspring because the process randomly shuffles genes across chromosomes and then randomly separates half of those chromosomes into each gamete. The two gametes then randomly fuse to form a new organism.
Hope it right
how does greenhouse effect warm the earth?
Answer:
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The greenhouse effect is a natural process that warms the Earth's surface. When the Sun's energy reaches the Earth's atmosphere, some of it is reflected back to space and the rest is absorbed and re-radiated by greenhouse gases. The absorbed energy warms the atmosphere and the surface of the Earth.
In this Punnett square used to predict genetic crosses, RR represents the _________ of the organism.A) appearance B) chromosomes C) genotype D) phenotype
Answer:
Genotype
Explanation:
A genotype is represented by two letters, called alleles, and describes the genes of an organism. Phenotype means the physical characterisitics of an organism. Chromosomes and appearance are irrelevant to this question. Hope it helps :)
Answer:
C) genotype
Explanation: I took the test
species change over time through a?
Answer:
Evolution
Explanation:
The concept of growth and development and changes , or the hypothesis that species have evolved and formed from previous species, is referred to as evolution. Biological evolution of an organism' features changing over many generations by natural selection. Genetic diversity is needed for evolution to occur.
When did the Paleozoic Era begin?
66 million years ago
400 million years ago
4 billion years ago
550 million years ago
The Paleozoic Era began approximately 550 million years ago and ended approximately 252 million years ago.
What is Paleozoic Era?The Paleozoic Era is a geological epoch that lasted about 541 million years and ended about 252 million years ago.
It is also known as the "Age of Invertebrates" because it witnessed the rise and dominance of numerous invertebrate groups, including trilobites, brachiopods, and ammonites.
From oldest to youngest, the Paleozoic Era is divided into six periods: the Cambrian, Ordovician, Silurian, Devonian, Carboniferous, and Permian.
Many significant events in the evolution of life on Earth occurred during this time period, including the Cambrian period's explosion of diversity, plant and animal colonization of land, and the emergence of reptiles and insects.
Thus, the answer is 550 million years ago.
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why animals need a circluatory system
Answer:
All cells in the body need to have oxygen and nutrients, and they need their wastes removed. These are the main roles of the circulatory system. The heart, blood and blood vessels work together to service the cells of the body.
Explanation:
A student is observing an image of an object that could be a comet, meteoroid or asteroid. Which of the following questions
would BEST confirm that the object is a comet?
A. Does the object contain ice?
B. Does the object contain metals?
C. Where is the object found?
D. How big is the object?
Answer:
A does the object contain ice
Explanation:
The BEST question that would confirm that the object is a comet is "Does the object contain ice?" Hence the correct option is A.
What are comets?Comets are small, icy celestial bodies that originate from the Kuiper Belt and the Oort Cloud. As they approach the Sun, they heat up and release gas and dust in the form of a coma and a tail, which can be observed from Earth. Therefore, if the object contains ice, it is most likely a comet.
Meteoroids, on the other hand, are smaller rocks that travel through space, and asteroids are larger rocks that orbit the Sun between Mars and Jupiter. Neither meteoroids nor asteroids typically contain ice.
As for the other options, whether the object contains metals or how big it is does not provide enough information to determine whether it is a comet, asteroid, or meteoroid. And while the location of the object may provide some clues about its origin, it is not a definitive factor in determining whether it is a comet.
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A place can support a population of 40 wolves. There are 55 wolves living in the area. What will happen to the wolf population?
Select one:
A. it will decrease.
B. It will remain the same.
C. it will increase very fast.
D. It will increase slowly.
Answer:
Well,if this place can only support a maximum amount of 40 wolves and 55 wolves are living in the area, the wolves population will decrease.
Explanation:
Why should organisms that produce more offspring have a more likely chance of survival?
Answer:Organisms must struggle to get what they need to survive, competing against other organisms that want the same things they do.
Explanation:
Answer:
I will try to put this in the simplest terms I can:
If you think about it, organisms actually do not live that long. There are multiple cause and effect reasons, such as low resources, no food, extinction, and so on. Thus, organisms must produce offspring to keep their "family line" consistent.
What is not true about ocean waves?
They get their energy from the wind.
They can travel long distances.
They transfer energy without matter as a medium.
The greater the wind speed is, the higher the wave is.
Answer:
They transfer energy without matter as a medium
Explanation:
I don't really have one
Which of the following are the results of a population reaching the carrying capacity of the environment in which it lives? (Choose
all that apply) WARNING I will report if there are any links to the answer!!
A)The birth and death rates will balance each other out for a net growth rate of zero.
B)The population will no longer grow in size.
C)Death rate will increase, and birth rate will decrease until they balance each other out.
D)Birth rate will increase, and death rate will decrease until they balance each other out.
Answer:
✦ The birth and death rates will balance each other out for a net growth rate of zero.
✦ Death rate will increase, and birth rate will decrease until they balance each other out.
✦ The population will no longer grow in size.
Explanation:
Due to practical limitations of food, water, and space, a given environment has a maximum population size it can support.
explain how the structure of a book lung allows it to perform its function
Answer:
Book lungs are within small openings in the abdomen of the arachnid. The book lungs themselves consist of a series of haemolymph filled plate-like structures. Between the plates there is an air space and this allows air to circulate around the plates. Gaseous exchange then occurs through the surface of the plates.