When comparing plant cells to animal cells, which organelle is only present in plant cells?(1 point)
mitochondrion
cell membrane
cytoplasm
cell wall
Answer:
- cell wall -
Explanation:
The answer is a cell wall because the cell wall in a plant acts as a 'skeletal system'.
So tell yourself does, an animal that already has a skeleton, need the cell wall?!
NO! It dan't! That's why animals don't have the cell walls and plants do.
!!! Hoped that helped !!!
When comparing plant cells to animal cells, cell wall is only present in plant cells. The correct option is D.
What is cell wall?A cell wall is a structural layer found just outside the cell membrane that surrounds some types of cells.
It can be tough, flexible, and rigid at times. It provides structural support and protection to the cell, as well as acting as a filtering mechanism.
The cell wall is made up of a network of cellulose microfibrils and cross-linking glycans embedded in a matrix of pectin polysaccharides that is highly cross-linked. Lignin can be found in secondary cell walls.
It provides a structural framework for plant growth and serves as the plant's first line of defense against pathogens.
The cell wall must also retain some flexibility so that it can be rapidly remodeled in response to developmental, biotic, or abiotic stimuli.
Thus, the correct option is D.
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Darwin's opinion that living forms must be descended from extinct forms was most closely related to his consideration of ___.
Darwin's opinion that living forms must be descended from extinct forms was most closely related to his consideration of the fossil record.
The ordered array of an organism's chromosomes is called a(n)
allele
pedigree
karyotype
mutation
Answer:
allele is the best answer there
Answer:
I understand you probaly don't need this answer anymore but the correct answer is Karyotype.
Explanation:
Insect are classified into how many main group ?
Answer: 3 Sub classes wingless insects known as apterygota and winged insects known as pterygota
Explanation:
Which table shows two steps of DNA replication?
DNA replication is a process where the polymerase enzyme adds complementary nucleotide bases in the parent DNA strand, hence option h polymerase matches adenine to thymine is correct.
What is DNA replication?The process by which a double-stranded DNA molecule is duplicated to form two identical DNA molecules is known as DNA replication.
Replication is necessary because when a cell splits, the two new daughter cells must have the same genetic information, or DNA, as the parent cell. In vitro DNA replication (DNA amplification) is also possible (artificially, outside a cell).
To begin DNA synthesis at known sequences in a template DNA molecule, DNA polymerases isolated from cells and artificial DNA primers can be utilized.
Therefore complementary base pairing of nucleotide base pairing, hence option h is correct.
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What is the coloured ink indicator? Can anyone explain me its function? i really need help
Answer:
Bioindicators are species, groups of species or biological communities whose presence, abundance and biological conditions, in real ecosystems or through the use of laboratory toxicity tests, to make inferences about the quality of the environment.
definition of tissue
The group of similar cells which work together to perform a particular function is called a tissue....
You may take help from the attachment....
Jumana relocated to Canada after the civil war in Syria displaced her family. After many years of odd jobs, she opened a small shop that sells homemade sweets and imported textiles from the Middle East. She rents her storefront in a building owned by her uncle, who has lived in Canada for nearly 30 years. Business is good and she can consistently pay her bills on time, but she hopes it will get better so that she can invest and one day buy a house.
Requried:
What statements BEST describes Jumana's situation?
Answer:
jumana leave her country to Canada for a better life
Jumana came to Canada for better life and buy new house for herself.
What is situation?Situation is defined as the circumstances and collection of events that are present at a specific time and location. Situation can be used to refer to what is happening to you personally or broadly to what is happening at a specific location and time. Briefly describe the issue or task you managed, providing pertinent information as necessary. Action: Describe the steps you took to finish your assignment or find a solution.
Many immigrants from throughout the world live in Canada. Canada continues to draw a lot of immigrants due to its stunning natural surroundings, vast open areas, mountains, trees, and lakes. a free society with a Charter of Rights and Freedoms that outlines fundamental human rights.
Thus, Jumana came to Canada for better life and buy new house for herself.
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Which of the following is a structure of the lower respiratory tract?
Answer:
c. Bronchioles
Explanation: is correct. post protected
PLEASE HELP ANY ANSWER WILL DO PLEASEEEE PLEASE
Draw a tree diagram for the dichotomous key that you used for the aliens.
Answer:
Explanation:
state one reason why the movement of molecules in method C represents active transport.
Answer:
Because molecules are moving from an area of low concentration to an area of higher concentration and thats require energy
What is metastasis and what body systems are involved in the process?
Answer:
Metastases most commonly develop when cancer cells break away from the main tumor and enter the bloodstream or lymphatic system. These systems carry fluids around the body.
Explanation:
In metastasis, cancer cells break away from where they first formed, travel through the blood or lymph system, and form new tumors in other parts of the body.
Even though human proteins are made from only 20 different amino acids, there are thousands of differen proteins found in human cells. What allows for so much variation in the proteins?
Answer:
Amino acids are the basic building blocks of proteins, and they serve as the nitrogenous backbones for compounds like neurotransmitters and hormones. In chemistry, an amino acid is an organic compound that contains both an amino (-NH2) and carboxylic acid (-COOH) functional group, hence the name amino acid. Proteins are long chains or polymers of a specific type of amino acid known as an alpha-amino acid. Alpha-amino acids are unique because the amino and carboxylic acid functional groups are separated by only one carbon atom, which is usually a chiral carbon. In this article, we will solely focus on the alpha-amino acids that make up proteins
Explanation:
I hope i helped
explain the significance of chemical digestion!! marking brainliest please help
Answer:
Chemical digestion is a vital part of the digestive process. Without it, your body wouldn't be able to absorb nutrients from the foods you eat. While mechanical digestion involves physical movements, such as chewing and muscle contractions, chemical digestion uses enzymes to break down food.
these tiny blood vessels transport absorbed nutrients.
Answer:
we called them capilary
Answer:
Capillaries
Explanation:
Capillaries are tiny blood vessels which transport absorbed nutrients, blood, and oxygen to all cells in the human body. They also connect arteries and veins together.
Carol and Sam were using the microscope in science class. They used a dropper to put some pond water on their microscope slide. This is what they saw. "That is something living," said Sam. "I don't think so," said Carol. What do you think? Explain. Question 13 options: This is not alive. It is not moving or responding. This sample is made of identical units. It is not alive. This is a multicellular organism made of cells. It is living.
Answer: Sam is correct
Explanation:
Ponds use microrganisms
So pretty much that’s why it isn’t safe to drink since it has germs
Which of the following best describes differences between birds and reptiles?
O Birds are endothermic and have four-chambered hearts, while reptiles are ectothermic and have three-
Birds have feathers a brain and sensory organs, while reptiles have scales and a brain but lack senso
Birds are vertebrates and have specialized lungs, while reptiles are invertebrates and have gills and sca
Birds lay eggs and are ectothermic while reptiles undergo internal fertilization and are endothermic.
Answer:
(A) Birds are endothermic and have four-chambered hearts, while reptiles are ectothermic and have three-chambered hearts.
Explanation:
got it right on the test
Birds and reptiles both belong to the animal kingdom. Reptiles are ectothermic and have three-chambered hearts, whereas birds are endothermic and have four-chambered hearts. Thus, option A is correct.
What are the characteristics of birds and reptiles?Birds and reptiles both belong to the kingdom Animalia and are chordates. They both have vertebral columns and the presence of the backbone. They share many similarities and differences in their physical appearances.
The birds are endothermic and can maintain constant body tempearture regardless of the external environment. While reptiles are ectothermic (cold-blooded) and regulate their temperature based on the external environment.
The birds have four-chambered hearts like mammals that separate the oxygenated from the de-oxygenated blood, whereas the reptiles have three-chambered hearts with one ventricle and two atria.
Therefore, the birds are endothermic, and reptiles are ectothermic.
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please help me!!!
Oral groove in paramecium is situated on
a.Dorsal side
b.Lateral side
c.ventral side
d.none
In December 2004, a tsunami (giant wave) destroyed many of the marine organisms along the coast of the Indian Ocean. What can be expected to happen to the ecosystem that was most severely hit by the tsunami?
A. The ecosystem will change until a new stable community is established.
B. Succession will continue in the ecosystem until one species of marine organism is established.
C. Ecological succession will no longer occur in this marine ecosystem.
D. The organisms in the ecosystem will become extinct.
Answer: A
Explanation:
It varies but "A" is the most legitimate answer.
True or false: The size and complexity of organisms is directly related to the number of total chromosomes it has. If false, make it a correct statement
I think the answer to this is true, but I'm not really for sure
what would be the independent, dependent, and control variable to how coral dies? (100 points)
Answer:
in the explanation
Explanation:
The independent variable would be us humans polutling the ocean with oil and other plastics destroying the coral reefs. The dependant variable is an abbrasive species of fish becoming overpopulated and killing all the fish that help the coral grow causing the coral to die. (independant variable basically means humans tampering with it causing the problem. dependent is naturally occuring humans cant control whether a fish overpopluates or not thats natural)
pls help asap I'll mark brainliest
Answer:
water then carbon diaxide and oxygen
Explanation:
Answer:
Light energy + Water + Carbon Dioxide to leaf to sugar + Oxygen
Explanation:
This is called photosynthesis. Hope it helps
The rapid activation of bodily systems to cope with a stressor and restore homeostasis is part of the _____ load model.
Which statement about the specific immune response is FALSE?
Each T or B cell has antigen receptors for only one specific antigen.
T and B cells recognize antigens by using antibodies bound to their surface membranes.
Unique antigen receptors are created by genetic recombination.
Antigens must be presented by an MHC molecule for T and B cells to recognize them.
All cells express MHC-I molecules, but only antigen-presenting cells express MHC-II molecules.
Through the activated channels, ____________ now flows outwards causing the membrane to repolarize back towards RMP.
Answer:
potassium
Explanation:
Ufbufbioaerubvfbiahffbbeaifhfia help me
Cara and Chuck were looking at pond water through a microscope. They saw this image. Cara wondered what it was. Chuck said it had to be a living thing because it was Question 1 options: green. Moving. Made of cells. Round throughout.
how much blood is filtered by the kidneys each day?
Answer:
Many times a day, your blood circulates through your kidneys.
Explanation:
Approximately 170 liters per day and 7 liters per hour. About 150 quarts of blood are filtered by your kidneys in a single day relavent to 44 gallons. The tubules are responsible for returning water and other substances to your blood following their filtering through your glomeruli. Approximately one or two quarts of the water becomes urine.
Frederick Griffith made a scientific discovery in 1928. which best describes the knowledge about genetics before 1928?
Answer:
Scientists did not know how traits were inherited.
Explanation:
Observa el mapa de las fallas tectónicas de la Hispaniola y luego escribe las instrucciones
Porfa díganlo. rapido
Answer:
El 14 de agosto de 2021, un terremoto de magnitud 7,2 sacudió Haití. El terremoto más grande en la región desde 2010, el desastre dejó al menos 2,000 personas muertas, 12,000 personas heridas y casi 53,000 casas destruidas.