2. Image formed by a plane mirror is
(a) virtual and erect
(b) real and erect
(c) virtual and inverted
Answer:
a) virtual and erect
Plane mirrors are the only type of mirror for which a real object always produces an image
HELP PLS
Ticks are parasitic insects that feed on blood. Consider a single
population of ticks that divides into two populations. One population
feeds on the blood of mammals that live only in trees. The other
population feeds on the blood of mammals that live only on the ground.
Which observation supports the idea that speciation has occurred?
How Fa
Search fc
The tree population and the ground population of ticks cannot mate
and have offspring.
How mar
Which an
The tree population of ticks feeds more frequently than does the
ground population
Do wild re
What doe
The genes in both the tree population and the ground population of
ticks combine to form a single, large gene pool.
What doe
The ground population of ticks gets eaten less frequently by birds
than the tree population.
Answer:
ask siri 123
Explanation:
i can help
The tree population and the ground population of ticks cannot mate and have offspring indicates speciation has occurred.
What is population?"A population is defined as a group of individuals of the same species living and interbreeding within a given area."What is speciation?"Speciation is the evolutionary process by which populations evolve to become distinct species."The ticks of tree and ground population evolve without interfering with one other. Forms a different species and no mating occurs between them.Hence, the correct answer is: The tree population and the ground population of ticks cannot mate and have offspring.
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1 point
The type of cellular transport shown in the image (to the right) is called
Endocytosis
Exocytosis
Osmosis
Diffusion
Answer:
Exocytosis
Explanation:
Exocytosis is when a bulk of molecules exit the cell. The arrows indicate that it is leaving the cell.
Answer:
B. Exocytosis
Explanation:
Exocytosis is the process by which vesicles in the cytoplasm fuse with the cell membrane, releasing their contents into the cell's external environment. Cellular wastes are often disposed through this process.
#5 Which statement is true in regards to DNA mutations? *
Mutations can lead to positive adaptations in an organism
all mutations result in a change in protein formed
mutations are not present in unicellular organisms
all mutations are negative and lead to diseases
Answer:
Mutations can lead to positive adaptations in an organism
tornadoes occur because a ___ air collides with ___ air. Please help!!
A certain dominant gene is located on the X chromosome. A father will transmit the Gene and the resulting condition to:
Can depletion of the ozone cause a rise in skin cancer among humans? Explain
Please help
Why are sex-linked traits like hemophilia less common in females than males?
A. Females would need to inherit two X chromosomes containing the recessive trait.
B. Females would need to inherit one X chromosome containing the recessive trait.
C. Females would need to inherit one Y chromosome containing the recessive trait.
D. Females would need to inherit two Y chromosomes containing the recessive trait.
Answer:
A. Females would need to inherit two X chromosomes containing the recessive trait.
Why don’t we include viruses when we discuss reproduction?
Answer:
Viruses latch onto other cells (host cells) in order to reproduce. They do not reproduce by themselves. Instead, they use another cell to repopulate.
Explanation:
I hope this is correct. ;w;
Which of the following is not a principle of natural selection?
Answer: The last one on the bottom i'm in biology
The statement which is not a principle of natural selection is, in every population, adaptations allow some organisms to survive and reproduce better than others. So, the correct option is D.
What do you mean by Natural selection?Natural selection is the process through which populations of living organisms adapt and change their needs as per nature.
The given statement gives the idea of adaptation rather than natural selection. Natural selection gives the idea of competing for limited resources. Natural selection always leads to the most favorable types of variation that an individual possess.
Therefore, the statement which is not a principle of natural selection is, in every population, adaptations allow some organisms to survive and reproduce better than others.
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______ Nucleus ______ Mitochondrion ______ Chloroplast ______ Cytoplasm ______ DNA ______ Ribosomes ______ Cell Wall ______ Cell Membrane a) Makes proteins for the cell b) Converts sugar to a usable form of energy c) Liquid plasma in the cell that holds the organelles d) Contains genetic material to make proteins e) Site of transcription f) Converts sunlight to sugar g) Separates the inside of the cell from the outside of the cell h) Provides structure for the cell
Answer:
Answer: The role of the nucleus of a eukaryotic cell is to control the cell. Because it contains most of the cell's DNA, which is encoded with genetic instructions, the nucleus controls which proteins the cell makes.
Explanation:
Answer: The role of the nucleus of a eukaryotic cell is to control the cell. Because it contains most of the cell's DNA, which is encoded with genetic instructions, the nucleus controls which proteins the cell makes.
The process of evolution, or genetic change over time, has resulted in the wide variety of living things that exist today. What part do mutations play in the evolution of species
Answer:
Evolution has occurred thanks to many random changes in the DNA base sequence that we call mutations. This is caused by errors in the genetic information contained in the cells - due to chemical or physical factors - and also its subsequent propagation by replication, being transcendent for evolution those that will later be transmitted to the offspring: somatic cells if reproduction it is asexual and the gametes if it is sexual. For this reason, we say that mutations are the primary source of gene variability, essential for evolution to exist. Thus, without mutations, the genetic variability that natural selection needs would not be present - in addition, such diversity is important for the population to more successfully mold (or adapt) to continuous environmental changes.
Explanation:
A mutation is a change in the information contained in the DNA of cells. The DNA of an organism influences all aspects of its life. Therefore, a change in the DNA of an organism can produce changes in all aspects of its life. The mutation increases the genetic variability of the species and contributes to the adaptation of the species to the environment and to their evolution. Viability and fertility are associated with adaptation, the total capacity of an organism to survive and reproduce. The effect of a mutation in any generation is minimal, but over time a considerable amount of variation from mutations can accumulate. Most mutations are harmful and their carriers die, but those that produce an improvement remain in the species and are essential in the evolutionary process. When mutations appear in a certain population, the genotype changes from generation to generation, appearing individuals with characteristics different from those of their predecessors. This is how the population evolves, being able to originate new species. Mutations that are detrimental to the carrier individual will be eliminated by natural selection.
Animals release _____ into the atmosphere through _____
Answer:
animal release carbon dioxide into the atmosphere through respiration
Explanation:
When an animal breathes, it takes in oxygen gas and releases carbon dioxide gas into the atmosphere. This carbon dioxide is a waste product produced by the animal's cells during cellular respiration.
Animals breathe, taking in oxygen and releasing carbon dioxide. Animals release carbon dioxide gas into the outer atmosphere through respiration process.
What is respiration?
This process completes in two steps: external respiration and internal respiration. External respiration, or breathing, includes inhaling (inhalation) oxygen from the outside atmosphere and exhaling (exhalation) carbon dioxide to outside. In this process, gas exchanges take place at the lungs, and deoxygenated blood oxygenates before going back to the left heart.
In cellular respiration, the cell takes oxygen from the oxygenated blood and uses it in different cellular metabolic reactions, releasing carbon dioxide into the blood. So in cellular respiration, oxygen is taken up by the cell and carbon dioxide is released by the cell. This carbon dioxide goes to the lungs, and by the process of exhalation, it is released into the atmosphere.
Hence, animals release carbon dioxide into the atmosphere through the respiration process.
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Plzz help
Determine the proper number of chromosomes that would be found in a human cell at each stage of the cell cycle.
Answer: The genetic material of the cell is duplicated during S phase of interphase just as it was with mitosis resulting in 46 chromosomes and 92 chromatids during Prophase I and Metaphase I. However, these chromosomes are not arranged in the same way as they were during mitosis.
Explanation:
What is a eukaryote?
Question 2 options:
organism that does not have a nucleus
organism that does have a nucleus
organism that produces its own food
Answer:
an organism that has a nucleus
Explanation:
What is a eukaryote?
1 organism that does not have a nucleus
2 organism that does have a nucleus<<
3 organism that produces its own food
4 organism that is ancient
Place the following elements in order from MOST to LEAST reactive:
Carbon
Iridium
Helium
Sulfur
Hydrogen
What muscle is each number
Answer:
XD 175 + 25$ like they said would be 200. jake would still be behind $25, therfore being the wrong answer provided.
Explanation:
What happens to chromosomes when an ovum and a sperm meet at fertilisation
Answer: When egg and sperm cells combine in fertilizations, they merge the two sets of chromosomes, ending up with 46 chromosomes in total. The maternal chromosomes from the egg cell and the paternal chromosomes from the sperm cell pair up. The resultant cell is called a zygote. Fertilization happens when a sperm cell successfully meets an egg cell in the fallopian tube. Once fertilization takes place, this newly fertilized cell is called a zygote. From here, the zygote will move down the fallopian tube and into the uterus. The zygote then burrows into the uterus lining.
Explanation:
PLEASE HELP ASAP !!! The model represents mutations in two non-homologous chromosomes. The letters represent genes.what does this model represent?
a ) translocation during crossing - over
b) point deletions that occur spontaneously
c) point insertions that occur during the cell cycle
d ) missense mutations that do not affect traits
Answer:
a ) translocation during crossing - over
The model this represents is an option a. translocation during crossing-over
What is translocation?Translocation refers to when the location is changed. In other terms, it is genetic which means at the time when the chromo-some part should be shifted to the other chromo-some. Here chromo-some should be structured that carry the gene.
Since the model shows the mutations in the 2 homologous chromosomes so the model this represents is an option a
Therefore, The model this represents is an option a. translocation during crossing-over
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PLZ ANSWER ASAP I NEED HELP will mark brainliest >_
Peter is complaining of stomach pain and constant hunger. Peter’s doctor diagnoses him with a worm infection. Peter feels hungry because the worm is absorbing food from his intestines.
Peter most likely has an infection from a(n)
tapeworm.
leech.
planarian.
marine worm.
Answer:
A) Tapeworm
Explanation:
got it right on edge nuity
Peter is complaining of stomach pain and constant hunger as he was diagnosed with a worm infection.
Peter feels hungry because the tapeworm is absorbing food from his intestine as tapeworm begins to feed off your body's nutrients to grow once it invades the body.How tapeworm infection occurs?Tapeworm infection is caused by ingesting food or water contaminated with tapeworm eggs or larvae.When tapeworm hatches and attaches itself to your intestine, it starts feeding off body's nutrients causing increase in apatite (hunger increases).It grows by reproducing proglottids ( chain looking body part) and the cycle continues.Planaria upon causing infection feeds on blood cells hence can not cause apatite.Leech and marine worm can not invade the body like tapeworm and planaria.To learn more about tapeworm infections:
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CAN SOMEONE PLZ HELP
1. List five organelles eukaryotes have that prokaryotes do not have.
2. Explain how the following organelles ensure that a cell has the proteins it needs: nucleus, rough ER, vesicles,
and Golgi apparatus.
3. What is the main difference between rough endoplasmic reticulum and smooth endoplasmic reticulum?
4. Describe the three types of vesicles.
Answer: 1 Lysosomes and peroxisomes, Microtubules, Endoplasmic reticulum, Mitochondria
2 The role of the nucleus of a eukaryotic cell is to control the cell. Because it contains most of the cell's DNA, which is encoded with genetic instructions, the nucleus controls which proteins the cell makes.
3 The rough endoplasmic reticulum has ribosomes on its surface. This is what give the RER a "rough" appearance. The smooth endoplasmic reticulum (SER) does not contain ribosomes. The Smooth ER looks more like tubes. The SER helps in the storage of proteins and lipids.
4 Secretory vesicles contain materials that are to be excreted from the cell, such as wastes or hormones.
Transport vesicles move molecules within the cells.
Vacuoles are vesicles that contain mostly water.
hope this helps
Answer:
sheeeeeeeeesh I agree with the other person
have a good day :)
Explanation:
What are some things that may cause weathering and erosion?
Choose all that apply:
-Rain
-Rivers
-Wind
-Volcanoes
Answer:
Rain, Rivers , Wind
Pls help! Explain why blood pressure must decrease in the arterioles before entering the capillaries ahhhhh
this is because the blood flow slow through the capillaries to allow gaseous exchange. Plus the pressure is higher in capillaries because the diameter of the capillaries is smaller than arterioles
I NEED HELPPP PLZZZZZZZZZZZZZZZZZ
What is the possible effect of high nutrient levels
In water systems
Answer:
D. Healthier Fish
Explanation:
Where is the greatest amount of the world's carbon found?
Answer:
You find the most amount in the ocean because oceans absorb it.
Explanation:
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How do you get rid of homologous chromosomes?
Answer:
hear is the answer hope it helps
Which type of neuron stimulates muscles to contract?
A. interneuron
B. sensory neuron
C. motor neuron
Answer:
Motor neurons stimulate muscles to contract answer:C
Which statement accurately describes recent population density and shifts in Southeast Asia?
Rural towns have many of the same opportunities as urban centers
Indonesia’s capital of Jakarta has become a megalopolis.
The population is rapidly declining
Overcrowding has pushed many people to migrate from urban to rural areas.
Answer:
Indonesia's capital of Jakarta has become a megalopolis.
Explanation:
I took the test
Answer:
Many city people are very poor and live in urban slums.
The greatest population densities are on the coasts, along the rivers, and in deltas.
Indonesia’s capital of Jakarta has become a megalopolis.
Explanation:
just did the quiz
Kingdom protista contains organisms that do not fit into other Eukarya Kingdom. Explain 3 ways that protists are different from animals, plants and fungi.
Explanation:
Protists are eukaryotes, and most are single-celled. You can think about protists as all eukaryotic organisms that are neither animals, nor plants, nor fungi.
protists is a paraphyletic name for unicellular Eukaryota organisms.