Answer:
Toxic damage to cells can cause individual cell death and if sufficient cells are lost, the result can be tissue or organ failure, ultimately leading to death of the organism.
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An isotope used for absolute dating has a half-life of 100,000 years. Laboratory analysis of a crystal, which originally formed with only the parent isotope present, is now found to have a parent-to-daughter ratio of 1 :3. How long has it been since the crystal formed? *
A. 33,000 years
B. 50,000 years
C. 200,000 years
D. 300,000 years
Answer:
D.it has been 300,000 years
Which of the following would NOT be listed on the Taxonomy scale for living organisms?
Mushrooms
Plankton
Algae
Flu Virus
Answer: flu virus
Explanation:
Answer:
Flu virus
Explanation:
A virus is not made of cells and is not considered as an organism.
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Summarize the different concepts of a species
The concept of species is an important but difficult one in biology, and is sometimes referred to the "species problem".
Thus, Some major species concepts are, Typological (or Essentialist, Morphological, Phenetic) species concept. Typology is based on morphology/phenotype.
The biggest group of organisms that can generate fertile offspring, often through sexual reproduction, from any two individuals of the appropriate sexes or mating types is referred to as a species in biology. It is a unit of biodiversity as well as the fundamental classification and taxonomic rank of an organism.
A species can also be identified by its karyotype, DNA sequence, anatomy, behavior, or ecological niche. In addition, since fossil reproduction cannot be studied, paleontologists use the chronospecies idea.
There are between 8 and 8.7 million different species of eukaryotes, according to the most recent accurate estimate.
Thus, The concept of species is an important but difficult one in biology, and is sometimes referred to the "species problem".
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What element is part of the Alkaline Earth Metals family and located on period 4
Potassium
Bromine
Calcium
Krypton
Answer:
C. Calcium (CA)
Explanation:
other Alkaline Earth metals in period 4 are, beryllium (Be), magnesium (Mg), strontium (Sr), barium (Ba), and radium (Ra)
Answer:
calcium is part of the alkaline earth metals family
help plss !! really need help
Answer:
am too young
Explanation:
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Which of the following characteristics of living things is very important for a population, but not necessarily for a single
organism?
a. Living things reproduce
b. Living things are made up of units called cells.
c. Living things maintain internal balance.
d. Living things respond to their environment.
similarities between the vas deferens of a male reproductive system and fallopian tube of a female reproductive system are ?
Answer:
Vas deferens → Male reproductive system
Fallopian tube → Female reproductive system.
Explanation:
In vertebrates, there are paired gonoducts for the movement of gametes from the gonads. Humans are no different.
1. Vas deferens is a male gonoduct that transports sperm away from the testes in preparation for ejaculation. Vas deferens collects secretion from seminal vesicle and becomes ejaculatory duct before draining in male urethra.
2. The fallopian tube is a female gonoduct that receives ova from the ovary when ovulation occurs. Fertilization occurs in the fallopian tube, and the early embryo moves from the tube to the uterine cavity.
3. Ciliated pseudostratified epithelium lines the vas deferens, while ciliated columnar epithelium lines the fallopian tube.
6N right and 10N & 2N left
A Three-leaf clover is dominant (T) to four leaves (t). What is the probability of an offspring having 4 leaves when you cross a heterozygous clover with a four-leaf clover?
O 25%
O 50%
O 75%
O 0%
Answer:
%50
Explanation:
Heterozygous = 2 different alleles (Tt)
4 leaf clover = 2 recessive alleles (tt)
T is dominant over t, so with the combination of Tt three leaves are expressed, rather than four leaves
For a recessive trait (four leaves) to show 2 recessive alleles are needed
To find the percentage of the offspring to have four leaves a punnet square should be created
To find the percentage divide the number of four leaf offering with 4 and multiply by 100
2÷4×100=50
= 50%
In the image above, what lettered section represents 2 chromosomes, each with 1 chromatid?
Answer:
If you add the picture I can help :)
Explanation:
Easy points: Is this a good paragraph for my biology class??The question was why is it important for soil to contain nitrogen, phosphorus, magnesium, and potassium.
Soil is one of the main sources of nutrients needed by plants in order to grow. Nitrogen is used by plants for leaf growth and green color. Without nitrogen in the soil, the plant wouldn’t grow tall and produce enough food.Phosphorus is used by plants to help form new roots, make seeds, fruit and flowers.This is crucial because crops take up phosphorus only from the soil solution.Potassium helps plants form strong stems and fast growth. It also increases disease resistance.It triggers activation of enzymes and is essential for production of ATP. Magnesium is the central core of the chlorophyll molecule in the plant’s tissue. If Mg is deficient, the shortage of chlorophyll results in poor and stunted growth.
Answer:
It makes the roots absorb the nutrients easier
Explanation:
the roots of the plant are meant to absorb water and nutrients for the plants to manufacture food easly and to grow, the soil contain nutrients for the plants to absorb them.
Please help me. no links i report you
Answer:
Option b
Explanation:
An unbalanced force moving everyone in Daniel and Maria's direction
analyze the negative impacts of estracting land resources, Choose
one of the negative impacts and connect it to how it could negative
impact you in your everyday life,
Answer:
Soil degradation, water shortages, biodiversity loss and global warming.
Explanation:
The negative impacts of extracting land resources are soil degradation, water shortages, biodiversity loss and global warming etc. Global warming greatly influence our daily life because this Global warming changes the climatic condition of the region by increasing the temperature. Using extracted fossil fuels in vehicles releases a lot of carbondioxide gas that collects in the atmosphere and block the sunlight which increases the surrounding temperature. This increase in the surrounding temperature causes floods and greatly impact our life.
The following table lists the number and variety of organisms in
four different ecosystems.
Predict what would happen to Ecosystem 3 immediately after a
volcanic eruption.
Answer:
The following table lists that number and variety of organisms in four different. Predict what would happen to Ecosystem 3 immediately after a volcanic eruption. Its biodiversity would decrease ... 395---Add all of the organisms together and divide by the number of ecosystems
Explanation:
Answer:
Its biodiversity would decrease
Explanation:
D
Select the correct answer.
Which of these activities increases the amount of carbon in the atmosphere?
A. animals eating plants
B. burning of fossil fuels
C. fossilization
D. photosynthesis
Reset
Answer:B. burning of fossil fuels
Explanation:
Which of these benefits the grassland by allowing light, warmth, moisture, and nutrients back into the soil?
ponds
fires
rainfall
trees
Define
1.epiphyllous stamens
2.staminode
Answer:
1. Epiphyllous is anything that is growing on the surface of the leaf or get attached to it of any other plant. ... In this, the stamen gets attached to the part of the flower of some other plant as an adhesion of stamen. Explanation: In other words, Epiphyllous stamen are the Filaments fused with tepals.
2. In botany, a staminode is an often rudimentary, sterile or abortive stamen, which means that it does not produce pollen. Staminodes are frequently inconspicuous and stamen-like, usually occurring at the inner whorl of the flower, but are also sometimes long enough to protrude from the corolla.
Explanation:
pls mark me brainless
Carbon is an element that is recycled on our planet. It is able to move through abiotic components of an ecosystem which system most accurately describes how the carbon cycle works
Answer:
I think it's either B or C
Which statements are true?
Usable nitrogen becomes available to organisms in the soil.
Decomposers are important to the carbon cycle
Producers do not play a role in the water cycle/
Both 'A' and 'B' are true
Answer:
A and B are true
Explanation:
A and B are true
An elementary school science teacher decided to liven up the classroom with a salt-water aquarium. Knowing that salt-water aquaria can be quite a hassle, the teacher proceeded stepwise. First, the teacher conditioned the water. Next, the teacher decided to stock the tank with various marine invertebrates, including a polychaete, a siliceous sponge, several bivalves, a shrimp, several sea anemones of different types, a colonial hydra, a few coral species, an ectoproct, a sea star, and several gastropod varieties. Lastly, some vertebrates - a parrotfish and a clownfish - were added. She arranged for daily feedings of copepods and feeder fish.
The teacher was unaware of the difference between suspension feeding and predation. The teacher thought that by providing live copepods (2 mm long) and feeder fish (2 cm long) the dietary needs of all of the organisms would be satisfied. Consequently, which two organisms would have been among the first to starve to death (assuming they lack photosynthetic endosymbionts)?
1. sponges
2. coral animals
3. bivalves
4. sea stars
5. shrimp
Answer:
sponges
Explanation:
because sponges need photosynthesis in order manufacture their food
The organisms namely sponges and coral animals are most likely to starve to death in the lack of photosynthetic endosymbionts. The correct option is 1 and 2.
What are endosymbionts?Endosymbionts are organisms that live in close proximity to another cell or organism.
As sponges are predominantly filter feeders, consuming detritus, plankton, viruses, and bacteria. They also absorb nutrient solution from water directly through their pinacocyte cells.
Due to the lack of photosynthetic endosymbionts the organisms namely sponges and coral animals are most likely to starve.
Thus, the correct option is 1 and 2.
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^ the question is in the picture above
Suggest how humans might contribute to a
mass extinction event.
Answer:
Deforestation, hunting, pollution, the introduction of various regions of non-native species, and the widespread transmission of infectious diseases spread through livestock and crops.
Explanation:
Question 8 (2 points)
Which of the following terms identifies all of the interactions between living and
nonliving things within an area?
1.) ecosystem
2.) food web
3.) energy pyramid
4.) food chain
Why does a lot of rain form over West Ferris?
Answer:
This idea helps explain why more rain forms over West Ferris than East Ferris.Therefore, when explain that water vapor condenses higher in the atmosphere, they are actually explaining that water vapor condenses high in the troposphere, which is relatively low in the atmosphere.
***I WILL GIVE BRAINLIST*** What determines the order in which new nitrogen bases line up?
Answer:
Greenhouse Gases is the new nitrogen basesr
Explanation:
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Which of the following is a density dependent limiting factor? NO LINK ANSWERS
A. new construction by humans in environment
B. earthquake
C. a sudden flood in the environment
D. new predator's in the population
In the presence of oxygen, _____ molecules of ATP can be formed during cellular respiration.
A. 36 to 38
B. 19 to 24
C. 2 to 4
D. 63 to 68
E. 38 to 42
Answer:
A
Explanation:
Answer:
A. 36-38
Explanation:
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Which of these is NOT a phenotype?
A tall
B short
C zygous
D round
Answer:
I believe that the answer is 'C. zygous'
Explanation:
I hope this helps, have a blessed day.
The option C "zygous" is not a phenotype.
What is a phenotype?Phenotype refers to the physical and observable characteristics of an organism, which are determined by its genotype and influenced by the environment.
Examples of phenotypic traits include height, eye color, hair color, skin color, and other observable features that vary between individuals of the same or different species. Phenotypes can also include physiological traits, such as blood type, or behavioral traits, such as personality traits in humans.
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How do B cells know when to make antibodies?
A.) They are alerted by Helper T cells.
B.) They are always making antibodies just in case that pathogen is present.
C.) They are alerted by Macrophages.
D.) B cells will simply find the pathogen in the body and immediately begin making
antibodies to fight the pathogen.
Answer:
A) They are alerted by Helper T cells.
Which of the following describes a complete nucleotide
Answer:
Explanation:
A nucleotide is an organic molecule that is the building block of DNA and RNA. They also have functions related to cell signaling, metabolism, and enzyme reactions.