Bio

The postively charged elementary particle in an atom is called:

A positively or negatively charged atom is called:

A single atom of hydrogen has how many protons?

Six atoms of carbon in a glucose molecule are connected by

Molecules of water in a drop of liquid water are connected by

A single carbon atom can form a maximum of how many covalent bonds

a single oxygen atom can form a maximum os how many covalent bonds

a single hydrogen atom can form a maximum or how many coavlent bonds

Which of the following is a hydroxyl group?

Which of the dollowing is an amino group

Which of the following is a methyl group

Which of the following is a hydrocardon

which of the following is a sugar

which of the following is a carbohydrate?

Plant cells store carbohydrates as

human muscles and liver store carbohydrates as

which of the following is a lipid

which of the following is a protein

which of the following is a polysaccharide

Which of the following chemical elements are present in proteins

Which of the following chemical elements are present in sugars?

Which of the following building blocks (monomers) make up proteins?

Which of the following is a correct scheme of a protein molecule atoms connected by a peptide bond?

Which of the following building blocks make up starch

Which cell organelles contain dugestive enzymes for food digestion

Which cell organelles perform protein synthesis?

Which of the following contains DNA in human cells?

Cell's plasma membrane is a double layer of

Complex structures inside a cell are called

Photosynthesis in a plant cell is performed inside its

Cell wall of a plant cell is made of

Proteins in a cell are assembled following instructions from

A plant cell has, by an animal cell does not have

What is the difference between prokaryotic (bacterial) and eukaryotic cells?

Cell biochemical reactions (metalbolism) are run by molecules called

The chemical grouup wihci has to be added to ADP to make ATP is a

"P" in ATP stands for

Which chemical elements are found in ATP

Various molecules that act as enzymes to run your body's chemical reactions are

A molecule whose shape is recognized by an enzyme is called

Which of the following are likely to contain and use proteins

Which of the following monomers are building blocks of enzymes

The passice transport of a solute across a membrane is called

Which organelles perform energy harvesting in eukaryotic cells

Energy harvesting that involves oxygen in living cells is called

The atmospheric gas which has to be supplied for most effective cellular respiration is

The oxygen from the glucose consumed in cellular respiration is exhausted as part of

A common product of fermenation is a

Which of the following stores energy harvested during cellular respiration

An animal cell has an average size of

Which of the following processes generates carbohydrates

The pigment used for photosynthesis in a plant cell is called

The organelle used for photsythesis in a plant cell is called

The organelle used for cellular respiration in a plant cell is called

Which is a source of carbon in photosynthesis

Which molecule is the waste gas in photosynthesis

Which is the source of energy that is captured during photosynthesis

In Which of the following is photosynthesis found

Which wavelengths of electromagnetic spectrum include visible light

What is another word for cell division of human body cells (somatic, or non-reproductive cells)

Which of the following contain genes in human body cells

Where does mitosis take place

Where does meiosis take place

How many chromosomes does a human body cells (somatic, or non-reproductive cells) have

How many chromosomes does a human cell have as a result of mitosis

Which of the following is another name for a sperm cell

Which of the following is another name for a fertilized human egg cell

How many chromosomes does a human zygote have

How many chromosomes are there in a human sperm cell

How many homologous pairs of chromosomes are there in a normal human somatic (body) cell

How many chromosomes does a dividing human cell have in the prophase I of meiosis

How many chromatids does a dividing human cell have in the prophase I meiosis

How many homologous pairs of chromosomes are there in a human cell that just completed the first stage of meiosis

A cat's brain cell has 38 chromosomes. How many chromosomes does a cat's sperm cell have

A dog's sperm cell has 39 chromosomes. How many chromosomes does a dog's zygote have

How many X-Chromosomes does a normal human female somatic cell have

How many X-Chromosomes does a normal human male somatic cell have

How many X-Chromosomes does a normal human egg cell (female gamete) have

How many Y-Chromosomes does a normal human female somatic cell have

How many Y-Chromosomes does a normal human male somatic cell have

How many Y-Chromosomes does a normal human egg cell have

How many X-Chromosomes does normal human sperm cell have

In a normal human male, the Y chromosome

How many chromosomes does a down syndrome person have in a single body cell?

Which of the following fertilizations is most likely to result in a down syndrome

In a human male with klinefelter syndrome (XXY), the extra chromosome

In a human female with turner syndrome (45 chromosomes), its only X chromosome

Genes are made of

Genes contain inherited instructions for making

An inherited sickle-cell anemia (SCA) disease, when expressed, involves changes in

When did Watson and Crick discover DNA structure

Which of the following chemical elements are present in DNA

Which of the following nitrogenous bases are present in DNA

Which of the following nitrogenous bases is present in DNA but not in RNA

A single nucleotide includes

Two paired bases on two opposite DNA strands are connected through

Which of the following is DNA synthesis

Which of the following are building blocks for DNA synthesis

Which of the following serves as a template for DNA synthesis

Where does DNA sythesis take place

Which of the following is RNA synthesis

Which of the following are building blocks for RNA synthesis

Which of the following nitrogenous base is present in RNA but not in DNA

Which of the following serves as a template for RNA synthesis

Where does RNA synthesis take place

Which of the following is protein synthesis

Which of the following are building blocks for protein synthesis

Which of the following contains genetic code

Which of the following serves as a temmplate for protein synthesis

Where does protein synthesis take place

Which molecule is brought by tRNA to the ribosome during protein synthesis

Which of the following is used during protein synthesis

How many nucleotides are there in one codon

How many different codons (triplets) coding for amino acids are there in the genetic code

Which of the following serves as an "adapter" molecule for amino acids during tanslations

The organelle used for protein synthesis in the cell is called

In mRNA, what does "m" stand for

One human mRNA molecule includes how many nucleotides

In tRNA, what doe s"t" stand for

What are exons made of

What are introns made of

How long is a protein assembled on mRNA that is 12,000 nucleotides long

How many genes are there in a human sperm cell

Polymerase Chain Reaction (PCR) can be described as an artificial

How many copies of a gene does PCR produce

Which of the following are building blocks for restriction enzymes

Which of the following is now produced commerically by cloning and expressing a human gene in bacteria

Restriction enzymes are used in biotechnology as tools to

A human gene can be cloned in bacteria

An evolutionary adaptation, according to Darwin, is a result of

Insects that survived in a field treated by a strong pesticide

Low genetic variability of some endangered species, such as the cheetah, are due to

Directional natural selection

In malaria-infected areas, natural selection maintains sickle-cell anemia allele because