Answer:
Each primary spermatocytes goes through the first meiotic division, meiosis I, to produce two secondary spermatocytes, each with 23 chromosomes (haploid). Just prior to this division, the genetic material is replicated so that each chromosome consists of two strands, called chromatids, that are joined by a centromere.
Answer:
Assertion In the testis, spermatogenesis occurs in the seminiferous tubules and testosterone secretion takes place from the Sertoli cells. Reason Testosterone brings growth and maturation of secondary s3x organs and also the development of accessory s3x characters.
Explanation:
can i get help ? please and thank you !!
the answer is electron the third one
1. DNA strand 1: TCT- TTA- CAT
- DNA STRAND 2:
- mRNA:
amino acid sequence:
tRNA:
mrna would be aga-aat-gta
trna would be aga-aau-gua
i learned this in biology recently
Answer:
1. DNA strand 1: TCT- TTA- CAT - DNA STRAND 2: - mRNA: amino acid sequence: tRNA:
25 POINTS!!! Calculate the ratio of H+ ions to OH– ions at a pH = 7. Find the concentration of H+ ions to OH– ions listed in Table B of your Student …
What is the purpose of meiosis? What type of cell is created (list all the scientific names)?
What would happen if cellular respiration does not happen?
Inner / Outer Planets in relation to the sun.
When population growth in an ecosystem levels off, it has reached what? 1Points A population density B extinction C carrying capacity D endan…
A person who eats a chicken that ate grain is a ... A. primary producer B. primary consumer C. secondary consumer D. quaternary consumer
What makes the core of the Earth denser than the mantle? a. because the mantle isn't as hot as the core b. because the core is under much more pressur…
Which describes a group of organisms that are members of a species?
The diagram shows three large carbohydrate polysaccharides. Cellulose Starch Glycogen Highly branched (glycogen) Linear (cellulose) Branched (st… This essential gas is important so that we can breath....... what is it ?
PLEASE HELP WILL GIVE BRAINLIEST A(n) shows the relationships among all species in an ecosystem. O A) energy pyramid B) food chain OC) food web O D) e…
WILL GIVE BRAINLIEST! Question 9 How do animals get nitrogen that is stored in the soil? O A) Animals do not take in the nitrogen stored in the soil. …
What type of melanin do albino people produce
Question 9 How do animals get nitrogen that is stored in the soil? O A) Animals do not take in the nitrogen stored in the soil. O B) Bacteria change t…
PLS HELP WILL GIVE BRAINLIEST!!!!All living things use energy and release gas as a waste product. What cycle explains the circulation of these gases? …
PLEASE HELP ITS URGENT. Due within 15 minutes!!!
what is the structure of bacteria? what is the structure of a virus?
21 22 23 24 25 C During transcription, what happens to the RNA polymerase if a repressor protein attaches to the operator? O It begins transcri…
How do the two main parts of the nervous system work together to perceive and react to an animal’s environment?
Explanation:
Groups of similar organisms within a species are called _____.
subspecies
orders
classes
families
Answer:
subspecies
(like a sub title or subcategory)
Which of these best explains the difference between eukaryotes and prokaryotes?
A.Eukaryotes have simpler cells and can only be unicellular.
B.Eukaryotes have simpler cells and can be either unicellular or multicellular.
C.Eukaryotes have more complicated cells and can only be multicellular.
D.Eukaryotes have more complex cells and can be either unicellular or multicellular.
Answer:
B. Eukaryotes have more complex cells and can be either unicellular or multicellular.
Answer:
Eukaryotes have more complex cells and can be either unicellular or multicellular. ... Plant cells have cell walls and chloroplasts; animal cells do not.
what are two body systems that work together within a Bee
Answer:
DIGESTIVE SYSTEM. The mouth is the first part of honeybees' digestive system. ...
RESPIRATORY SYSTEM. Honeybees do not have a specific organ for gas exchange.
Explanation:
How is a population impacted when biological diversity is increased?
Does an increase in biodiversity always affect an ecosystem positively? Why or why not?
Are there any environmental factors that could impact species diversity in your neighborhood? Explain.
Answer:
Question one: Greater biodiversity in ecosystems, species, and individuals leads to greater stability. For example, species with high genetic diversity and many populations that are adapted to a wide variety of conditions are more likely to be able to weather disturbances, disease, and climate change. Question two: If those resources limit growth, then increasing functional richness should lead to greater total productivity and decreased loss of resources from the ecosystem. Facilitative interactions among species could also lead to increases in ecosystem pools or process rates as species or functional richness increases. Question three: Important direct drivers affecting biodiversity are habitat change, climate change, invasive species, overexploitation, and pollution.
what causes a ducks feathers to repeal water
Answer:
Ducks have a special gland positioned near their tails, called the preen gland. This gland produces an oil, which ducks rub over their feathers with their beaks to maintain their waterproof effect. This oil creates a protective barrier that stops feathers becoming waterlogged.
What is the group containing nitrogen called ? A. Nucleic Avis group. B. Amino group. C. Polypeptide group. D. Saccharide group.
Answer:
B. Amino group
Explanation:
The definition of an amino group is it is a functional group that consists of a nitrogen atom attached by single bonds to hydrogen atoms.
A red fur fox (RR) is mated with a fox that has red and white fur (RW). What are the probable phenotypic ratios of the offspring?
a) 100% white fur
b) 50% white fur, 50% red and white fur
c) 50% red fur, 50% red and white fur
d) 100% red fur
Answer:
B
Explanation:
Punnett squares help.
RR
RW
R R
R RR RR
W RW RW
Which statement best explains how the mass of an atom is organized?
Most of the mass is contained in the nucleus.
The mass is spread evenly throughout the whole atom.
The mass is spread evenly throughout the electron cloud.
Most of the mass is contained in the electron cloud.
Answer: A
Explanation: most of the mass contained in the nucleus.
Most of the mass of an atom is contained in the nucleus. So the correct option is A.
What is atomic mass?The amount of matter that is contained in an atom is defined as the atomic mass of an atom. In mathematical terms, atomic mass is 1/12th of the mass of a carbon-12 atom. This is assigned an atomic mass of 12 units.
The unit for measuring atomic mass is called Dalton after the English scientist John Dalton.
Atomic mass is expressed as the sum of the mass of protons and neutrons. Protons are positively charged particles and neutrons are particles with no charge.
Atomic mass is expressed as the mass of protons and neutrons because protons and neutrons are present in the nucleus. Thus, it is said that most of the mass of the atom is concentrated in the nucleus.
The mass of electrons is comparatively less than the mass of protons and neutrons combined. Also, electrons are present in the atomic shells of the atom.
Therefore the correct option is A.
Read more about atomic mass, here
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Which is an inherited trait?
flavor of an apple from a particular tree
hierarchical status of a wolf in a pack
ability to ride a bike
interest in stamp collecting
Answer:
a flavor of an apple from a particular tree
Explanation:
Answer: The correct answer is flavor of an apple from a particular tree
Explanation: Confirmed correct
What are the two models of the Solar System? How are they different?
Answer:
The geocentric model says that the earth is at the center of the cosmos or universe, and the planets, the sun and the moon, and the stars circles around it. The early heliocentric models consider the sun as the center, and the planets revolve around the sun.
Explanation:
Which is true of all the organic molecules (carbs, lipids, nucleic acids, & proteins)?
A. They all provide energy
B. They are complex molecules made from simpler molecules
C. They all store genetic information
D. They are used to make organisms faster
Answer:
B
Explanation:
What would most likely result if there were a mutation that decreased the function of the p53 gene?
Answer:
Annormal cells would counting to dived
Explanation:
i think is that one
How do you find the amino acid of a codon?
Which statement describes how this ecosystem is likely to change after many years of ecological succession? A The variety of fish species will increase. B The number of plants will increase. C The level of the water will increase. D The elevation of the hills will increase
Answer: C) The level of water will increase.
Explanation:
Since the water is in the center of the trees, it will rise because of the shape of the ground. Water is a destructive force, so it will break down the soil and ground. This means the trees and plants will also go away, and the pond will expand to an even bigger body of water. The answer is C) The level of water will increase.
. Answer the following questions for the problem of antibiotic-resistant bacteria.
What is your claim to fixing the problem?
Having resistant body when taking antibiotics
Antibiotic resistance occurs when the body builds up a resistance to antibiotics.
Anti
Answer:
antibiotics resistant occur when the body build up a resistance to antibiotics
Fungi are classified in which Kingdom?*
Plantae
0 Animalia
Fungi
Protista
Answer:
FUNGI PO ANG SAGOT KO PO TY
fungi are classified in plants Kingdom
Explanation:
hope it is accurate !!!!
Imagine you have a five-step food chain. If 100 percent of the energy is available at the first trophic level, what percentage of energy is available at the highest trophic level?
Answer:
0.1% will be available at the highest trophic level
0.001 % of energy is available at the highest trophic level because about only ten precent of energy is carried from each step in the food chain.
What is food chain ?In the wild, the food chain describes who eats whom. Everything that is alive, from microscopic algae to enormous blue whales, depends on food to thrive. Each food web represents a possible route for nutrients and energy to travel through the ecosystem.
As an illustration, grass makes its own sustenance from sunshine. A bunny consumes some grass. Eaten by a fox, the rabbit. When a fox dies, microbes decompose its remains and return it to the soil, where it feeds grass-like plants.
There is less biomass at the top of the food chain since there is less energy there than at the bottom, therefore the first 100 percent, 10 percent, 1 percent , 0.1 percent, 0.01 percent, and eventually 0.001 percent of energy are carried from each level in the food chain.
Therefore, only 0.001% of the energy is available at the first trophic level.
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Which system of the human body has a function similar to that of a plant cell's cell wall?
A. digestive
B. skeletal
C. respiratory
D. nervous
Which scenario describes an interaction between two of Earth’s spheres?
1. Water flows from a stream to a lake.
2. Gravity moves rocks to another location.
3. Lions use energy to catch other animals for food.
4. Bears dig big holes in the ground to protect their young.
Answer: D
Explanation:
Bears are living so they are biosphere while the rocks they and Are interacting with are geosphere so it’s biosphere interacting with geosphere hence, D because two spheres interact and gravity isn’t a sphere water is interacting with hydrosphere which arent different so tis basically hydrosphere with hydro and lions use energy is just biosphere with biosphere and last one makes sense cuz it’s two different bio and geo!
The ________ is the site where lipids, triglycerides, and steroids are synthesized, as well as where calcium is stored within the cell. The ________ is the site where lipids, triglycerides, and steroids are synthesized, as well as where calcium is stored within the cell. nucleolus mitochondria lysosome rough endoplasmic reticulum smooth endoplasmic reticulum
ANSWER FOR YOUR QUESTION
The proteins made by the rough endoplasmic reticulum are for use outside of the cell. Functions of the smooth endoplasmic reticulum include synthesis of carbohydrates, lipids, and steroid hormones; detoxification of medications and poisons; and storage of calcium ions
The diagram below shows DNA replication. Which of the following statements about the process shown is true?
Answer:
A. Two new molecules form that’s re identical to the original molecule
Explanation:
My teacher went through this in class
Which of the following animals is a vertebrate?
Golden Retriever
Earthworm
Tarantula
O Praying Mantis
Answer:
golden retriever
Explanation:
Answer:
Golden Retriever
Explanation:
The animal kingdom is split into two groups
Vertebrate- Is an animal with a backbone
invertebrate- is an animal without a back bone
jamie is observing 3 different prepared slides under a light microscope.
Answer: All living things are composed of single cells or multiple cells I guess?
Answer:
All living things are composed of single cells or multiple cells.
Explanation:
.
What is known as the highest point
which separates areas?
A. stream
B. divide
C. floodplain
D. drainage basin
Answer:
stream
Explanation:
stream divides area's
What can decrease genetic variation
Answer:
-toxins
-predator vs prey relationship
-competition
-New Habitat
-Disasters
What are the three categories of contaminates?
Answer:
Here are the three types of contaminants: Biological: Examples include bacteria, viruses, parasites, fungi, and toxins from plants, mushrooms, and seafood. Physical: Examples include foreign objects such as dirt, broken glass, metal staples, and bones. Chemical: Examples include cleaners, sanitizers, and polishes.
Explanation:
What phase of the cell cycle occurs AFTER this phase (telophase)?
Answer:
Cytokinesis
Explanation:
The cytokinesis of the cell cycle occurs after this phase (telophase).
A DNA strand contains the nucleotide sequence AGC what would be the amino acid that codes for this sequence only a strand of mRNA formed during translation
Answer:
The amino acid should be serine
