When does osteogenesis begin?
*When a fetus is 13-15 weeks old
When a baby is born
When a fetus is 32 weeks old
When a child is 2 years old
Answer:
A. When a fetus is 13-15 weeks old
Explanation: is correct. post protected
Eukaryotic chromosomes contain two general domains that relate to the degree of condensation. These two regions are ________. A.
Answer:
these 2 regions are called
heterochromatin and euchromatin O
hope this helps
Someone plz help me :(
Answer:
it's a or c but I think it's a
Glands that have branched ducts and secretory cells that form sacs at one end of the ducts are classified as ___________ glands.
Glands that have branched ducts and secretory cells that form sacs at one end of the ducts are called compound alveolar glands.
What is an exocrine gland?The exocrine gland secretes enzymes outside the gland through the duct. The gland can be unicellular, multicellular, compound, tubular, alveolar, etc. Their modes of functions vary too. An example of an alveolar gland is the mammary gland. Sweet glands are an example of tubular glands.
Hence, glands having branched ducts and sac-like secretory cells are called compound alveolar glands.
To learn more about the glands, refer to the following link:
https://brainly.com/question/11312688
#SPJ1
*blank* is the branch of biology and medicine concerned with the study of embryos and their development.
Answer:
Physiology is the branch concerned with the study of embryos and their development.
Why don't animal cells need chloroplasts? Question 4 options: Animals do not make their own food. Animal cells make their own chlorophyll. Animal cells collect sunlight another way. Animals use photosynthesis to make their own food.
Animals do not make their own food.
What is the term for a section of a DNA molecule that codes for proteins?
Answer:
Gene. A segment of a DNA molecule (a sequence of bases) that codes for a particular protein and determines the traits (phenotype) of the individual.
Explanation:
Mark me brainly please
Which of the following is NOT a cause for siblings to look differently?
sexual reproduction
independent assortment
crossing over
mutations
Answer:
mutations is the answer
Bengai tigers the population has decreased in india because of what
Answer:
destruction of forests
Explanation:Unfortunately, this resulted in the loss of most of the Bengal Tigers habitat. Because of the destruction of forests, where tigers live, the Tiger population decreased dramatically. The new habitat space for tigers was scattered and very small. Many tigers died because they didn't have anywhere they could sustain to live.
membrane molecules that use the energy of atp to move ions against a concentration gradient are called
Membrane molecules that use the energy of ATP to move ions against a concentration gradient are called PUMPS. This type of transport is called active transport.
Active transport is a type of transport that requires energy (e.g, ATP) to move molecules and/or ions against a concentration gradient.
In active transport, specific membrane transporter proteins referred to as pumps are used to move ions against an electrochemical gradient across biological membranes.
These protein pumps are fundamental for creating electrochemical gradients that are subsequently used by cells for diverse purposes (e.g., muscle contraction).
Learn more in:
https://brainly.com/question/2503897
I am a muscle located behind your lungs. I am always moving,
and I never get tired. I pump blood to all parts of your body.
What am I?
Which organism are part of every foodchain
Producers, also known as autotrophs, make their own food. They make up the first level of every food chain. Autotrophs are usually plants or one-celled organisms. Nearly all autotrophs use a process called photosynthesis to create “food” (a nutrient called glucose) from sunlight, carbon dioxide, and water.
Can i ask u a questions
how to get more quesBrainliest me dear :)
Some single-celled organisms make copies of themselves through mitosis. Which describes the function of the cell cycle in such single-celled organisms?
Answer:
In unicellular organisms such as bacteria, mitosis is a type of asexual reproduction, making identical copies of a single cell.
Explanation:
Unicellular organisms are asexual which means they don"t need partners.
PLEASE HELP ME IM TIMED!
Answer:
#3 Proteins
Explanation:
"There are four classes of macromolecules (polysaccharides or carbohydrates, triglycerides or lipids, polypeptides or proteins, and nucleic acids such as DNA & RNA). Carbohydrates and lipids are made of only carbon, hydrogen, and oxygen (CHO). Proteins are made of carbon, hydrogen, oxygen, and nitrogen (CHON)."
Making changes to the secondary structure of hair has a different outcome than making changes to its tertiary or quaternary structure. How does this outcome differ
The outcome differs in the way that the protein folds itself at each level. The changes in the way that it folds lead to:
modifications in the function, shape or in the combination with other proteins.
Protein has different levels of structure. Each of them is related to how the amino acids and other molecules interact with each other. Hair is made of proteins, so if one of the structures is affected, the hair is too.
Let's analyse what happens in each level of structure:
In the case of the primary structure, which is the sequence of amino acids, the modification will give a non-functional protein that will not fold into the following structural level. So, there won't be new hair.For the secondary structure, a modification here can lead to a different folding. In other words, it can change from an α helix to a β pleated sheet or the other way round. This will give a different shape to the hair, like curly or straight.A modification in the tertiary structure modifies the interaction of the R groups in the protein, so the three-dimensional structure that this interaction gives will change, giving a different type of hair.Lastly, if we modify the quaternary structure, the protein won't interact with some proteins, but it may interact with others.
In conclusion, the modification of the secondary structure changes the interaction between the elements of the protein giving hair with different shapes.
Learn more at:
https://brainly.com/question/1548720?referrer=searchResults
Answer:
Changes in secondary structure are temporary, while changes to tertiary or quartenary structure are permanent.
What is an example of a microorganism acting in a harmful way? Question 6 options: Bacteria infecting a cut. Bacteria aiding in digestion. Bacteria used to create yogurt. Fungi decomposing waste in a septic tank.
Answer:
I would say A but im not sure
Explanation:
Answer:
bacteria aiding in digestion
Which of the following describes how most farms in the United States are run?
Answer :Family farms (where the majority of the business is owned by the operator and individuals related to the operator) of various types together accounted for nearly 98 percent of U.S. farms in 2019. Small family farms (less than $350,000 in GCFI) accounted for 90 percent of all U.S. farms.
glycolysis begins with _________ and ends with __________.
Answer:
Glycolysis starts with one molecule of glucose and ends with two pyruvate (pyruvic acid) molecules, a total of four ATP molecules, and two molecules of NADH.
Explanation:
Answer:
1 glucose molecule
2 pyruvic acid molecules
Explanation:
Glycolysis starts with 1 glucose molecule, which undergoes 4 stages until it splits into 2 pyruvic acid molecules. The products of this biochemical pathway include 2 NADH and 2 ATP molecules
who has a German shepherd? I want a dog and need some information form a dog owner.Plz help
Answer:
That is the type of dog that police use to find drugs, look for people, etc.
Explanation:
A student unpacks his lunch and spreads out the potato chips on the brown paper lunch bag. Within minutes the student notices translucent spots on the lunch bag.
The translucent spots on the lunch bag indicate the potato chips contain which organic molecule?
carbohydrates
proteins
lipids
nucleic acids
Which of the following most accurately describes what affects Earth's ocean tides?
The Sun and Moon, but the Sun impacts Earth's tides more because it is closer in distance to the Earth.
The Sun and Moon, but the Moon impacts Earth's tides more because it is closer in distance to the Earth.
The Sun and Moon, but the Sun impacts Earth's tides more because it much more massive than the Earth.
The Moon is the only celestial object that influences Earth's ocean tides because it so close in distance to the Earth.
The answer option that most accurately describes what affects Earth's ocean tides is: B. The Sun and Moon, but the Moon impacts Earth's tides more because it is closer in distance to the Earth.
A tide can be defined as the rise and fall of water level in water bodies such as lakes and oceans, especially due to the combined effects of the gravitational force of attraction exerted by the Moon and Sun on planet Earth.
Hence, an ocean tide describes the episodic changes in the height of the surface of an ocean as a result of the gravitational force of attraction exerted by the Moon and Sun on planet Earth.
In conclusion, the Earth's ocean tides is largely affected by the gravitational force of attraction exerted by the Moon than that of the Sun because the Moon is closer in distance to the Earth (approximately 400,000 kilometers).
Read more: https://brainly.com/question/21694593
Describe a freshwater biome.
Define a wetland.
Why do wetlands have high biodiversity?
A developer wants to extend a golf course into a wetland. Outline environmental arguments you could make against this plan.
Freshwater biomes are large communities of plants and animals centered around waters with less than 1% salt concentration. They are very important to survival on Earth. Types of freshwater biomes include ponds, lakes, streams, rivers, and even some wetlands. Wetlands are not always considered freshwater biomes because they usually have too high of a salt content.
2.
Wetlands are areas where water covers the soil, or is present either at or near the surface of the soil all year or for varying periods of time during the year.
3.
Wetlands have been called “biological super systems” because they produce great volumes of food that support a remarkable level of biodiversity. In terms of number and variety of species supported, they are as rich as rainforests and coral reefs.
sorry last question i don't no
the tendency of certain alleles to be inherited together is called
Answer: Genetic Linkage
Explanation:
It's during the meiosis stage of sexual reproduction.
1) Consider the image seen here. The image, at point Y, represents the process of
es
A) hydrolysis; lipid
B) hydrolysis; saturated fat
dehydration synthesis, lipid
D) dehydration synthesis, protein
Answer:
you did put a picture but im pretty sure its a lipids
Explanation:
What do stomata Get from the environment?
Answer:
Plants, by contrast, breathe through tiny pores called stomata on the underside of their leaves. These pores allow carbon dioxide to enter and oxygen to exit. Plants open and close their stomata in response to changes in their environment so they can get the CO2 they need, and avoid drying out.
Explanation:
Hello!!
Plants, by contrast, breathe through tiny pores called stomata on the underside of their leaves. These pores allow carbon dioxide to enter and oxygen to exit. Plants open and close their stomata in response to changes in their environment so they can get the CO2 they need, and avoid drying out.
brainliest!!
Which paired structures of the male reproductive system lie at the base of the bladder and connect to the vas deferens via a duct
Phân biệt các bệnh của bệnh di truyền đơn gen
Explanation:
please tell in english
What is is called when a doctor removes both an ovarian cyst and the affected ovary?
Answer:
b. Oophorectomy
Explanation:is correct. post protected
The daughter of a couple is colorblind. Her mother has normal vision. B - Normal; b- colorblind. The genotype of the mother is ______.
What can bacteria do with “broken down” materials ?