Answer:
Ribosomes
Membrane-Bound Organelles
Nucleus
Explanation:
Each eukaryotic cell has a plasma membrane, cytoplasm, a nucleus, ribosomes, mitochondria, peroxisomes, and in some, vacuoles; however, there are some striking differences between animal and plant cells.
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20 POINTS
Three chairs were rolling across a flat office floor. The blue and red chairs are the same mass, and they have more mass than the yellow chair. Each chair was hit by another chair, but not from the same direction. Use the information in the diagram to answer.
Answer:
The answer is A
Answer:
answer is A hope it helps
In eukaryotic cells, DNA is packaged with proteins into structures called
chromosomes. What advantage do chromosomes provide the cell?
a. They ensure equal division of genetic material when a cell divides.
b. They allow random distribution of genetic material when a cell divides.
c. They allow all genes to be expressed at the same time.
d. They eliminate the need for a nuclear membrane.
Answer:
A
Explanation:
PLEASE FILL IN THE BLANKS
1. cells are the basic units of________and_______in all living things.
2.All cells come from____-________________ __________.
Answer: 1) structure, function
Explanation: 2) all cells come from existing cells
Question: In an area where a river has cut deep into Earth, there are several layers of very different rock exposed. The oldest rock layer is most likely to be the layer that is A Below the other layers. B The thickest layer. C The most rich in fossils. D Igneous intrusive rock.
Answer:
C
Explanation:
The oldest rock layer is most likely to be the layer that is The most rich in fossils.
What are types of rock layers ?
A rock layer is defined as the formation of the aggregation of different mineral constituents in the earth’s crust and the classification of rocks layer is based on different factors such as Geological classification, Physical classification, Chemical classification.
Geological classification of rock layer include Sedimentary rock formed by the sediments deposition by the weathering of pre-existing rocks and the sediments can be spread by different agents like water, wind, frost, gravity, etc. Examples are Sandstone, limestone, lignite, etc.
Igneous rocks formed by solidification of magma below the earth’s surface, unable to descend, these magma cools down and solidifies into igneous rocks.
Metamorphic rocks formed by the metamorphism process where the f the pre-existing rocks is changed by the influence of heat and pressure, for example Slate, Gneiss, Schist, marble, soapstone etc.
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A young man recently learned from a genetics doctor that he had a condition called Friedreich's ataxia. This syndrome affects the arms and the legs with the person usually needing a wheel chair. Neither of his parents have this disorder. However the young man's grandfather was wheelchair bound, but didn't know why because genetic information was very limited when his grandfather grew up.
What are the genotypes of each of the individuals mentioned in this question? Create a pedigree chart to support your answer.
Answer:
i believe dominant genotypes
Explanation:
from memory sorry for no pedigree chart
ACTIVITY
Which of these is an opinion?
A
Scientists sent the new lichen to Oregon State University.
B
Yosemite National Park is in California.
С
Scientists will probably find more new lichen in Yosemite.
Lichen are made up of fungi and algae.
How was early Earth's atmosphere different from today's atmosphere?
Answer:
The early Earth was very different from our Earth today.
Explanation:
Earth's first atmosphere had lots of water vapor but had almost no oxygen. Later, frequent volcanic eruptions put several different gases into the air (Figure 12.13). These gases created a new type of atmosphere for Earth.
Answer:
The atmosphere we enjoy today is radically different from the atmosphere that formed with the Earth billions of years ago. ... As the Earth cooled enough to form a solid crust (4.4 billion years ago), it was covered with active volcanos. These volcanos spewed out gasses, like water vapor, carbon dioxide and ammonia.
How has the Earth's atmosphere changed over time?
Water vapor, carbon dioxide, methane, ammonia, and other gases similar to the ones produced by volcanoes today were expelled. Over a vast amount of time, millions of years, the earth gradually cooled. ... From these clouds, the oceans formed and the oceans absorbed a lot of the carbon dioxide in the atmosphere.
Explanation:
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The Tower of David is in the Old City of Jerusalem. Visitors at the tower noticed that the wind suddenly shifted direction early this afternoon.
is it weather or climate
Answer:
This atmospheric condition represents weather.
Explanation:
Weather can be defined as the atmospheric conditions of a particular area over a short period of time. Some of the elements of weather are wind, humidity, temperature, air pressure, precipitation and clouds.
Basically, the weather of a particular area or region may change hourly, daily, monthly or even annually.
In this scenario, the Tower of David is in the Old City of Jerusalem. Visitors at the tower noticed that the wind suddenly shifted direction early this afternoon. Therefore, this change in the atmospheric condition (wind) represents weather.
On the other hand, climate refers to the change in the atmospheric conditions and manifestation of weather in a particular area over a long period of time usually 30 years.
What is the source of carbon in a glucose molecule
produced by photosynthesis?
a. CO2
b. Light energy
c. H20
d. glucose
concentration.
a. The video clip explains that you can also look at water as moving to a
concentration of solute molecules.
b. Why can it also be viewed this way?
Answer:
A. The video clip explains that you can also look at water as moving to a HIGHER concentration of salute molecules.
B. Why can it also be viewed this way?
Because there is more salute and less water.
pleaseeeeeeeeeeeeeeeeeeeeeeee help
Answer:c
Explanation:
how much force is needed to make a 12 kg object accelerate at 3 m/s
Which of these correctly describes sexual reproduction?
A) it produces only a single offspring at a time
B) it needs two parents to form a daughter cell
C) it needs a single parent to form a daughter cell
D) it produces offspring that look exactly similar
Answer:
B
Explanation:
1. What shellfish have segmented bodies?
crustaceans have segmented bodies
Answer:
Lobster,Shrimp and Crab have segmented bodies to protect their muscles and organs that gives them structural support.
Explanation:
(2.92 +6) + (5.12 + 8)
|
Answer:
22.04
Explanation:
Body cells are identical to one another. How do these cells reproduce?
O
A. through gamete formation
O
B. through genetic mutation
O
C. through meiosis
D. through mitosis
Answer:
The answer is D, Mitosis.
Explanation:
Mitosis: a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth. This also explains why your body cells are identical to each other.
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Which of the following correctly lists the parts of the water cycle?
A) Evaporation, condensation, temperature, precipitation, collection
B) Condensation, build-up, runoff, precipitation, collection
C) Runoff, precipitation, evaporation, melting, condensation
D) Evaporation, condensation, precipitation, runoff, collection
Explain why
Answer:
D) Evaporation, condensation, precipitation, runoff, collection
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Explanation: The water cycle shows the continuous movement of water within the Earth and atmosphere. System that includes many different processes. Liquid water evaporates into water vapor, condenses to form clouds, and precipitates back to earth in the form of rain and snow. Then I does runoff and creates a new water source or goes back to a water source.
Earth’s temperatures are stable because we are surrounded by ________ which allows the right amount of sunlight in to warm the Earth. *
Answer:
Atmosphere
Explanation:
hello! I had one quick question I wanted to ask just to make sure I was right. the question is "How do animals obtain the energy they need? "
Answer:
by eating or doing whatever that species needs to do
Explanation:
why do you think places along the equator have relatively constant temperatures and daylight hours all year?
Answer:
Explanation:
The Earth's axis tilts approximately 23.5° from vertical relative to the plane of the Earth's orbit around the sun. ... The equator, however, receives relatively consistent sunlight all year. The consistency of energy means the equator's temperature stays relatively constant all year.
Which statement is true about mutations?
W
A. Mutations are always beneficial.
В.
Mutations are always harmful in plants.
C.
Mutations only affect humans.
D.
Mutations can be caused by high-energy radiation.
Answer:D.
Mutations can be caused by high-energy radiation.
Explanation:
"Mutations can be caused by high-energy radiation". This statement is true. Therefore option D is correct.
Mutations are changes in the DNA sequence of an organism's genome. They can occur naturally as a result of errors during DNA replication or recombination, or they can be induced by various factors including radiation, chemicals, or environmental factors.
High-energy radiation, such as X-rays or ultraviolet (UV) radiation, has the potential to cause mutations in the DNA. This radiation carries sufficient energy to disrupt the normal structure and functioning of DNA molecules, leading to changes in the genetic code.
Exposure to high-energy radiation can result in different types of mutations, including point mutations (changes in a single nucleotide base), deletions, insertions, or rearrangements of DNA segments.
It is important to note that not all mutations are harmful or beneficial. Some mutations may have no significant effect, while others can be detrimental or even provide advantages in certain circumstances, such as adaptations to new environments or resistance to specific diseases.
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I don’t know if anyone can see it very clearly sorry but please help
What are five similarities and five differences between sharks and bony fishes?
[tex]\Huge\text{Pisces or Fishes}[/tex]
Pisces or Class Fish is the largest group of chordates which includes 25000 species of fishes. Study of fishes is called Ichthyology.
Fish is an aquatic gill breathing gnathostomates whose stramlined body is provided with paired fins and covered over dermal scales.
Super Class pisces is divided into two classes:
Chondrichthyes Osteichthyes _____________________________________
[tex]\Huge\textbf{Chondrichthyes}[/tex]
Chondrichthyes are Cartilagineous fishes. This class is also called Elasmobronchi. It has exclusively marine fishes with endoskeleton made of cartilage. Their skin has tiny shark enamel coated denticles called Placoid Scales. They are heterocercal and Mouth is present at ventral to tail fins. They have exposed 5 gills on each sides.
Example Shark, Ray fishes, Dog dish etc
_____________________________________[tex]\Huge\textbf{Osteichthyes}[/tex]
These fishes are Bony Fishes. This group is also called Teleostomi, They are found in both marine and fresh water. Their endoskeleton is made up of bones. Their skin has thin bony plates called cycloid or ctenoid. Their gills are covered with outer skin called operculum. Tain fin is homocercal and mouth is present at anterior tip.
Examples Sea Horse, Gold fish, Eel etc
_____________________________________[tex]\huge\text{Similarities}[/tex]They have gill to breath Streamlined body to move in fast moving water All fishes are cold-blooded. Fins are present for locomotion They have great sense of smell They have air bladder to be bouncy[tex]\Huge\text{Dissimilarities}[/tex]
Chondrichthyes are exclusively marine fishes while Osteichthyes are both fresh water and marine water living.The skeleton of Chondrichthyes is made of cartilage while the skeleton of Osteichthyes is made of bones.The gills of Chondrichthyes is NOT covered with operculum while the gills of Osteichthyes are covered with outer skin operculum. The skin of Chondrichthyes has tiny shark enamel coated denticles called Placoid Scales while the skin of Osteichthyes has thin bony plates called cycloid or ctenoid.The tail of Chondrichthyes is Heterocercal and mouth is ventral to the tail fins while the tail of Osteichthyes is homocercal and the mouth is present at anterior tip._____________________________________Best Regards,'Borz'Why is it necessary for the cell to grow and duplicate its DNA before the start of meiosis?
Answer:
Cells will duplicate or copy their DNA right before they divide. The process of cell division is called mitosis. Since the cell is dividing it needs two copies of its DNA - one is kept by the parent cell and the other is passed to the daughter cell. ... So this process of duplicating DNA is very important.
I NEED HELP
What animal adaption happened before the others? a.pex
A) Reproduction on land
B) Development of a coelom
C) Tissue development
D) Deuterostome development
Answer:
C tissue development
Explanation: tissue development is what happens before others
The Linnaean taxonomic system classifies organisms into divisions called taxa. If two
organisms belong to the same taxonomic group, they are related. Similarity at which of these
levels indicates the closest relationship?
E. Kingdom
G.
Class
H.
Order
J.
Genus
Answer:
Genus
Explanation:
The level that represent the closest relationship is to be considered as the option J i.e. Genus.
The Level that represent the closest relationship?The genus refers to the taxonomic rank that lies between the family and species. The group of an organism in a genus shared various structural similarities and they are closely related.
The members of gene should be more related to each other as they belong to the other genera in the similar family.
hence, the option J is correct.
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If I have 8 DNA nucleotides, how many
DNA
bases do I have?
How many base pairs?
Answer:
Each nucleotide contains phosphate, sugar (of the deoxyribose type), and one of the four bases (Figure 8-4). When the phosphate group is not present, the base and the deoxyribose form a nucleoside rather than a nucleotide. The four bases are adenine, guanine, cytosine, and thymine.
Explanation:
list different causes of diseases
Answer:
Bacteria. These one-cell organisms are responsible for illnesses such as strep throat, urinary tract infections and tuberculosis.
Viruses. Even smaller than bacteria, viruses cause a multitude of diseases ranging from the common cold to AIDS.
Fungi. Many skin diseases, such as ringworm and athlete's foot, are caused by fungi. Other types of fungi can infect your lungs or nervous system.
Parasites. Malaria is caused by a tiny parasite that is transmitted by a mosquito bite. Other parasites may be transmitted to humans from animal feces.
Explanation:
i write it with the explanation on when i answer it
Which characteristics do birds and mammals share? Check all that apply.
A. Both give birth to live young.
B. Both are endotherms.
C. Both have hair or fur.
D. Both produce milk to feed their young.
E. Both are vertebrates.
Answer:
B and E
Explanation:
The correct answer would be that both birds and mammals are vertebrates and are also endothermic.
Both birds and mammals belong to the same animal kingdom. They also belong to the same chordate phylum but belongs to different classes under the phylum. However, they both belong to the same sub-phylum Vertebrata - a group of chordates with the vertebral column.
Birds (aves) and mammals represent different classes of animals. Birds lay eggs that later hatch when conditions are right to give rise to their young ones. Mammals, on the other hand, give birth to their younger ones and are able to produce milk through their mammary gland to feed them. The body of mammals is characterized by the presence of hairs that help insulate the body making them to be homoiothermic, unlike birds that of birds, where hair is replaced with feathers.
However, both birds and mammals are endothermic, that is, they both maintain a fairly constant body temperature irrespective of the temperature of their environment.
The correct options are B and E.
Both are endotherms and vertebrates. Therefore option B and E is correct.
Birds and mammals share the characteristics of being endotherms and vertebrates.
Endotherms are animals capable of regulating their body temperature internally, which allows them to maintain a relatively constant body temperature even in changing environmental conditions.
Both birds and mammals are warm-blooded, which enables them to be active and maintain their metabolism efficiently.
Additionally, birds and mammals are vertebrates, meaning they possess a backbone or vertebral column. This structural feature provides support and protection for the spinal cord and allows for efficient movement.
While birds and mammals have other unique characteristics, their endothermic nature and vertebrate status are significant similarities that contribute to their adaptability and success in diverse ecosystems.
Therefore option B and E is correct.
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Name the floral parts which help in
Sexual reproduction of plants.
Answer:
Gynoecium
Explanation:
The male organ of a flower is called stamen. It helps in making male gametes of the plant and is present in pollen grains. The female organ of a flower is called carpel. It helps in making female gametes or egg cells of the plant and is present in ovules.
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