Answer:
Macroevolutionists cannot make direct observations because most of the organisms are dead or extinct.
Explanation:
Fingerprints that are NOT readily visible are called
Fill in the blank below with the vocabulary word that best completes the sentence, is the science of naming and dassifying organisms based on structural comparisons and genetic evidence
Answer:Taxonomy
Explanation:
what are the parts of the digestive system and their functions?
Mouth - break down food mechanically and chemically
Salivary Glands - produce saliva that contains enzymes which chemically break down food
Esophagus - move food from mouth to stomach through a process called peristalsis
Stomach - chemically break down food with stomach acid, mechanically break down food with the contracting of stomach muscles
Liver - creates bile that helps with digestion, stores, distributes and breaks down nutrients
Gallbladder - temporarily stores bile and squeezes it into the small intestine to break down fat droplets
Pancreas - produces pancreatic juice that contains digestive enzymes and bicarbonate
Small Intestine - absorbs nutrients from chyme
Large Intestine - absorbs water and dries out food, turning it into waste
Rectum - stores waste before it leaves the body
Anus - an opening where waste exits the body
Which physical property is most helpful for separating a mixture of sand and
gravel?
A. Particle density
B. Boiling point
C. Particle size
D. Magnetic attraction
Various methods can be employed in the separation of heterogeneous mixtures from a solution comprising the solute and the solvent.
The correct answer is:
Option C. Particle Size.
This can be explained as:
Sand and gravel have two different sizes and can be separated on the basis of particle sizes.Sieving is a method that can be employed to separate gravel from sand.Sand particles being small will pass through the sieve while gravel being big in size will remain on the top of the sieve.Therefore, particle size will be the parameter by which sand and gravel can be separated.
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why insects called successful group of animlas?
Vertebrate animals are organisms that have a spinal column and use bones to support their weight. Scientists consider bones to be an organ of the skeletal system. What organ of a plant is most similar to a bone in animals.
A. Stem
B. Root system
C. Cell wall
D. Phloem
Answer: The stem, the stem keeps the plant stable. Much like our skeletal system.
The stem cells of the organ of a plant is most similar to a bone in animals. Hence option A is correct.
What is vertebrate?Vertebrate is defined as any terrestrial animal, which is the most prevalent subphylum of the phylum Chordata. Vertebrate animals are those that have a backbone. There are many vertebrates on the planet today, and they are divided into 7 classes according to their physiological and anatomical characteristics.
Stem cells are defined as unique human cells that can differentiate into a wide range of cell types, from brain cells to muscle cells. Stem cells can differentiate in the body into a wide range of various cell types. They act as the body's system for repairs. Adult stem cells and embryonic stem cells are the two primary categories of stem cells.
Thus, the stem cells of the organ of a plant is most similar to a bone in animals. Hence option A is correct.
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Sponges, members of the phylum Porifera, are sessile filter feeders that lack tissues or organs. Instead, specialized cells have unique functions like ingesting food, support, and reproduction. Such specialization within a sponge body is a result of
A) cytokinesis.
B) cell cleavage.
C) cell differentiation.
D) gamete fertilization
Answer:
C) cell differentiation.
Explanation:
Cell differentiation is a process undergone by a cell in which it changes to a specialized form. During the process of cell differentiation, some genes in a single cell becomes turned off or on in a process called GENE EXPRESSION to give rise to cells with specialized functions.
This is the case of this sponge whose specialized cells perform unique functions like ingesting food, support, and reproduction. The specialization of the cells within the sponge is as a result of the process of CELL DIFFERENTIATION.
surface area of the cell
Answer: Depending on the volume ratio of the cell you can identify the surface area.
Explanation:
Element
Compound
Mixture
Organic compound
which is an example of heat being transferred by conduction
a) A furnace heating the air in a school
b) an ice cube melting in a persons hand
c) A pot of water on the stove boiling
d) The sun heating the water in a swimming pool
What does a black watermelon seed mean? How is it different from a white seed?
similarities between renal atery and renal vein
Answer:
Arteries are blood vessels responsible for carrying oxygen-rich blood away from the heart to the body. Veins are blood vessels that carry blood low in oxygen from the body back to the heart for reoxygenation.
Explanation:
Please I need help will give the brainlist to the right answer
Answer:
if i’m not wrong i think it’s M?
Explanation:
the nucleus is like the boss of the cell so
Are all electrolytes the same in their indications? Explain
Answer: Electrolytes are minerals in your body that have an electric charge. They are in your blood, urine, tissues, and other body fluids. Electrolytes are important because they help Balance the amount of water in your body.Balance your body's acid/base (pH) level .Move nutrients into your cells, Move wastes out of your cells, Make sure that your nerves, muscles, the heart, and the brain work the way they should. Sodium, calcium, potassium, chloride, phosphate, and magnesium are all electrolytes. You get them from the foods you eat and the fluids you drink. The levels of electrolytes in your body can become too low or too high. This can happen when the amount of water in your body changes. The amount of water that you take in should equal the amount you lose. If something upsets this balance, you may have too little water (dehydration) or too much water (overhydration). Some medicines, vomiting, diarrhea, sweating, and liver or kidney problems can all upset your water balance. Treatment helps you to manage the imbalance. It also involves identifying and treating what caused the imbalance.
From which vessels does heart get its blood supply?
Answer:
coronary arteries
Explanation:
Two major coronary arteries branch off from the aorta near the point where the aorta and the left ventricle meet. And they create a muscle with blood which is coronary arteries
access the capabilities of animal and plant cell types owing the presence or absence of chloroplast and cell wall
Answer:At this point, it should be clear that eukaryotic cells have a more complex structure than do prokaryotic cells. Organelles allow for various functions to occur in the cell at the same time. Despite their fundamental similarities, there are some striking differences between animal and plant cells (see Figure 1).
Animal cells have centrosomes (or a pair of centrioles), and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts, plasmodesmata, and plastids used for storage, and a large central vacuole, whereas animal cells do not.
Explanation: pls give me brainest
Which statements describe the energy in a food web? Select three options.
Answer:
The most energy is in the beginning of the food web, and a portion of that is passed on, and a portion of THAT is passed on, and it keeps getting passed on until it reaches a predator on the top
Explanation:
Answer:
energy is in the beginning of the food web
Which two substances are among the four major types of organic compounds made by living things?
A. Water
B. Nucleic acids
C. Lipids
D. Carbon dioxide
The two substances that are among the four major types of organic compounds made by living things are nucleic acids and lipids.
What are organic substances?Organic substances are substances that are from living sources.
There are four major organic substances produced in nature and are as follows:
CarbohydratesLipidsNucleic acidsProteinsTherefore, the two substances that are among the four major types of organic compounds made by living things are nucleic acids and lipids.
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Answer:
Lipids and Nucleic acids
Explanation:
I took the test
state 2 functions of mucus in small intestine
Answer:
Mucus is extremely important in the gastrointestinal tract. It forms an essential layer in the colon and in the small intestine that helps reduce intestinal inflammation by decreasing bacterial interaction with intestinal epithelial cells.
Explanation:
here are all of them
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Which organ is responsible for storing urine?
kidney
large intestine
anus
bladder
Answer:
bladder
Explanation:
it stores urine
A sequence of amino acids is formed during the process of _____.
a
transcription
b
translation
c
intron removal
d
replication
Answer:B
Explanation:
The measure of the average kinetic energy of the atoms of a substance is the
substances energy cycle. *
True
Or
False
What molecule promotes guanosine monophosphate synthesis to regulate the balance of nucleotide pools?
A) ATP
B) UTP
C) CTP
The structures of hypoxanthine and allopurinol are shown above. It is known that allopurinol is an inhibitor of the enzyme xanthine oxidase. What type of inhibitor is allopurinol likely to be?
A) Uncompetitive
B)Competitive
C)Allosteric
Answer:
Well the answer is A: ATP
Explanation:
The smallest unit of life is a ,and all organisms have at least one.
Answer: A cell
Explanation:
Answer:
Cell
Explanation:
It just is. :/
True or False? a human has 23 chromosomes
Answer:
False
Explanation:
A cell normally contains 23 pairs of chromosomes.
How are land plants adapted to survive on land? What are the benefits of living on land rather than in water?
Answer:
Sample Response: Plants that are able to survive on land developed specialized vascular tissue such as xylem and phloem. This vascular tissue aids in the transport of water and other resources needed by the plant. Land plants also developed a cuticle, or waxy layer, to prevent water loss and seeds to protect young plants. The benefits of living on land are greater access to sunlight and less competition with other plants for resources.
Explanation:
pick two air masses and tell me about their characteristics include full name as well as the symbol
Answer:
.
Explanation:
In the image of the food chain below the ____ is the producer.
A. Fungi
B. Hawk
C. Plants
D. Snake
construct a model of gas exchange that shows interactions among: air sacs (alveoli) of the lungs, capillaries, artery, vein, red blood cell, and body cell. Include the gases oxygen (O2) and carbon dioxide (CO2), as well as arterial blood and venous blood, in your model. All these structures must be labeled or annotated in your model.
Answer:
................................
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which aquatic ecosystem is the most commercially exploited for seafood and minerals.
Answer:
The coral reefs of the Caribbean are thought to be under threat
Explanation:
Overfishing threatens over 60 percent of Caribbean coral reefs. Declines in coral cover and increases in algal cover have been observed across the region. This analysis identified about one-third of Caribbean reefs at high threat from overfishing pressure and about 30 percent at medium threat.